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92-500: The Lego Ninjago Movie is a 2017 animated martial arts comedy film . Based on the toy/kit line of the same name , and the TV show starring the same characters, it was directed by Charlie Bean , Paul Fisher, and Bob Logan (in their feature directorial debuts) from a screenplay by Logan, Fisher, William Wheeler, Tom Wheeler , Jared Stern , and John Whittington . It is the first theatrical film to be based on an original Lego property and

184-406: A blue rather than violet spot, on many white surfaces, including white clothing, white paper, and projection screens, due to the widespread use of optical brighteners in the manufacture of products intended to appear brilliantly white —  the brighteners are chemical compounds that absorb light in the violet (and ultraviolet ) region of the electromagnetic spectrum and re-emit light in

276-440: A direct green laser (which does not require doubling) promises much higher efficiencies and could foster the development of new color video projectors. In 2012, Nichia and OSRAM developed and manufactured merchant high-power green laser diodes (515/520 nm), which can emit green laser directly. Because even a low-powered green laser is visible at night through Rayleigh scattering from air molecules, this type of pointer

368-513: A dot of light from a red laser pointer may be thought to be due to a laser gunsight . When pointed at aircraft at night, laser pointers may dazzle and distract pilots, and increasingly strict laws have been passed to ban this. The low-cost availability of infrared (IR) diode laser modules of up to 1000 mW (1  watt ) output has created a generation of IR-pumped, frequency doubled , green, blue, and violet diode-pumped solid-state laser pointers with visible power up to 300 mW. Because

460-675: A few hundred milliwatts, as "extremely dangerous and not suitable for sale to the public." Lasers classified as pointers are intended to have outputs less than 5 mW total power ( Class 3R ). At such power levels, an IR filter for a DPSS laser may not be required as the infrared (IR) output is relatively low and the brightness of the visible wavelength of the laser will cause the eye to react (blink reflex). However, higher-powered (> 5 mW) DPSS -type laser pointers have recently become available, usually through sources that do not follow laser safety regulations for laser packaging and labeling. These higher-powered lasers are often packaged in

552-557: A green laser beam was directed on the face of Russian goalkeeper Igor Akinfeev . After the match the Algerian Football Federation was fined CHF 50,000 (approx. £ 33,000/ € 41,100/ US$ 56,200) by FIFA for the use of lasers and other violations of the rules by Algerian fans at the stadium. During a football match in Athens between Greece and Ireland on 16 June 2023, Greek supporters were asked repeatedly over

644-486: A large impact on the spread of practice of Traditional Chinese and Japanese Martial Arts in English-speaking countries. Martial arts films have been produced all over the world, but the genre has been dominated by Hong Kong action cinema , peaking from 1971 with the rise of Bruce Lee until the mid-1990s with a general decline in the industry, until it was revived close to the 2000s. Other notable figures in

736-679: A laser beam with an output power under 1 milliwatt (mW). The least expensive laser pointers use a deep-red laser diode near the 650 nm wavelength . Slightly more expensive ones use a red-orange 635 nm diode, more easily visible because of the greater sensitivity of the human eye at 635 nm. Other colors are possible too, with the 532 nm green laser being the most common alternative. Yellow-orange laser pointers, at 593.5 nm, later became available. In September 2005 handheld blue laser pointers at 473 nm became available. In early 2010 " Blu-ray " (actually violet) laser pointers at 405 nm went on sale. The apparent brightness of

828-435: A laser beam, i.e. showing goal positions to the robot optically instead of communicating them numerically. This intuitive interface simplifies directing the robot while visual feedback improves the positioning accuracy and allows for implicit localization. Entertainment is one of the other applications that has been found for lasers. Clubs, parties and outdoor concerts may use high-power lasers, with safety precautions, as

920-567: A neodymium doped crystal, usually neodymium-doped yttrium orthovanadate (Nd:YVO 4 ) or neodymium-doped yttrium aluminium garnet (Nd:YAG), or, less commonly, neodymium-doped yttrium lithium fluoride (Nd:YLF)), which lases deeper in the infrared at 1064 nm. This lasing action is due to an electronic transition in the fluorescent neodymium ion, Nd(III), which is present in all of these crystals. Some green lasers operate in pulse or quasi-continuous wave (QCW) mode to reduce cooling problems and prolong battery life. An announcement in 2009 of

1012-562: A number of sport matches worldwide. Olympique Lyonnais was fined by UEFA because of a laser pointer beam aimed by a Lyon fan at Cristiano Ronaldo . In a World Cup final qualifier match held in Riyadh , Saudi Arabia between the home team and the South Korean team, South Korean goalkeeper Lee Woon-Jae was hit in the eye with a green laser beam. At the 2014 World Cup during the final group stage match between Algeria and Russia

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1104-494: A principal wavelength of 1064 nm, but with the proper reflective coating mirrors can be also made to lase at other "higher harmonic" non-principal neodymium wavelengths). For high output power, BBO crystals are used as frequency doublers; for lower powers, KTP is used. The Japanese company Nichia controlled 80% of the blue-laser-diode market in 2006. Some vendors are now selling collimated diode blue laser pointers with measured powers exceeding 1,500 mW. However, since

1196-493: A significant movie genre in themselves. Like westerns for Americans, they have become an identity of Chinese cinema. As the most prestigious movie type in Chinese film history, kung fu movies were among the first Chinese films produced and the wuxia period films (武俠片) are the original form of Chinese kung fu films. The wuxia period films came into vogue due to the thousands of years popularity of wuxia novels (武俠小說). For example,

1288-445: A spectacle. Laser shows are often extravagant, using lenses , mirrors and fog . Laser pointers are a popular plaything for pets (e.g. cats , ferrets and dogs ) whose natural predatory instincts are triggered by the moving laser and will chase it and/or unsuccessfully try to catch it as much as possible, providing entertainment for the pet owner as well. However, laser pointers have few applications beyond actual pointing in

1380-446: A spot from a laser beam depends on the optical power of the laser, the reflectivity of the surface, and the chromatic response of the human eye . For the same optical power, green laser light will seem brighter than other colors, because the human eye is most sensitive at low light levels in the green region of the spectrum (wavelength 520–570 nm). Sensitivity decreases for longer (redder) and shorter (bluer) wavelengths. Additionally,

1472-478: A toy-box scale." Peter Travers of Rolling Stone gave the film a 2 out of 4 scoring, saying, "Despite comically inspired vocal performances from Justin Theroux and Dave Franco as nutjob Lego versions of Darth Vader and Luke Skywalker , the action and jokes pile up with exhausting repetitiveness." On 31 October 2024, Deadline Hollywood reported that a live-action Ninjago film from Universal Pictures

1564-437: A visible beam via scattering from dust particles or water droplets along the beam path. Higher-power and higher-frequency green or blue lasers may produce a beam visible even in clean air because of Rayleigh scattering from air molecules, especially when viewed in moderately-to-dimly lit conditions. The intensity of such scattering increases when these beams are viewed from angles near the beam axis. Such pointers, particularly in

1656-459: A wide range of applications. Green laser pointers can also be used for amateur astronomy . Green lasers are visible at night due to Rayleigh scattering and airborne dust, allowing someone to point out individual stars to others nearby. Also, these green laser pointers are commonly used by astronomers worldwide at star parties or for conducting lectures in astronomy. Astronomy laser pointers are also commonly mounted on telescopes in order to align

1748-436: Is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light ) to highlight something of interest with a small bright colored spot. The small width of the beam and the low power of typical laser pointers make the beam itself invisible in a clean atmosphere, only showing a point of light when striking an opaque surface. Laser pointers can project

1840-621: Is considered revolutionary in American cinema for raising the standard of fight scenes in western cinema. In the Chinese-speaking world, martial arts films are commonly divided into two subcategories: the wuxia period films (武俠片), and the more modern kung fu films (功夫片, best epitomized in the films of Bruce Lee ). However, according to Hong Kong film director, producer, and movie writer Ronny Yu , wuxia movies are not to be confused with martial arts movies. Kung fu films are

1932-407: Is essentially a laser pointer may be built into an infrared thermometer to identify where it is pointing, or be part of a laser level or other apparatus. They may also be helpful in scientific research in fields such as photonics , chemistry , physics , and medicine . Laser pointers are used in robotics , for example, for laser guidance to direct the robot to a goal position by means of

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2024-415: Is frustrated to learn his element is "green" while Kai has fire , Cole has earth , Jay has lightning , Zane has ice , and Nya has water . Wu also mentions the "Ultimate Weapon", giving Lloyd new hope of stopping Garmadon, despite Wu warning them that nobody can ever use the device. The next day, Garmadon attacks Ninjago with his new mech and this time defeats Lloyd. As Garmadon gloats, Lloyd returns with

2116-576: Is in development, with Dan and Kevin Hageman attached to pen the script. By the time the film was announced, Warner Bros. had terminated their film rights to the Lego brand by the fall of 2019 following The Lego Movie 2: The Second Part ' s disappointing box office returns, which led Universal to enter early negotiations with Lego for a new first-look deal in December of that year, eventually acquiring

2208-559: Is in development. A young boy meets the mysterious owner of a relic shop, Mr. Liu, who tells him the story of Ninjago, a city within the LEGO universe. It is frequently terrorized by the evil warlord Garmadon and his army of sea life -themed henchmen. Garmadon's constant attacks backfire on his son Lloyd , despised by everyone in Ninjago City for his relation to Garmadon, putting him under emotional stress. Unbeknownst to everyone, Lloyd

2300-406: Is often frowned upon by members of the laser projector community who fear that their misuse may result in legislation affecting lasers designed to be placed within projectors and used within the entertainment industry. Others involved in activities where dazzling or distraction are dangerous are also a concern. Another distressing and potentially dangerous misuse of laser pointers is to use them when

2392-424: Is similar to previous Lego games, with some new features such as multiplayer and new techniques. The Lego Ninjago Movie was released on Digital HD on 12 December 2017, and DVD , Blu-ray , Blu-ray 3D , and 4K Blu-ray on 19 December 2017, by Warner Bros. Home Entertainment . Based on The Lego Ninjago Movie , it was released for Microsoft Windows , Nintendo Switch , PlayStation 4 , and Xbox One , alongside

2484-436: Is that the technology enables more precise guidance of location and identification of anatomic structures. Red laser pointers can be used in almost any indoor or low-light situation where pointing out details by hand may be inconvenient, such as in construction work or interior decorating. Green laser pointers can be used for similar purposes as well as outdoors in daylight or for longer distances. Laser pointers are used in

2576-511: Is the Green Ninja, the leader of a ninja team comprising Kai, Cole, Jay, Zane, Nya, and their master Wu (Garmadon's brother and Lloyd's uncle), who always stop Garmadon from taking over Ninjago by fighting with mechs. When Garmadon is once again unsuccessful at conquering Ninjago, his tech division shows him a giant new mech. Following their victory, Wu tells the ninja that only their "unique element" will permanently vanquish Garmadon. Lloyd

2668-434: Is used by astronomers to easily point out stars and constellations. Green laser pointers can come in a variety of different output powers. The 5 mW green laser pointers (classes II and IIIa) are the safest to use, and anything more powerful is usually not necessary for pointing purposes, since the beam is still visible in dark lighting conditions. Blue laser pointers in specific wavelengths such as 473 nm usually have

2760-413: Is what connects the ninja and his family. He comforts and tames Meowthra and apologizes to Garmadon profusely, saying that he forgives him. Realizing the error of his ways, Garmadon cries tears of fire, causing Meowthra to regurgitate him back out. After Lloyd and Garmadon reconcile, Meowthra becomes the mascot of Ninjago and Lloyd is hailed as a hero. As Mr. Liu finishes his story about Ninjago, he informs

2852-550: Is why they had to stay apart. The ninja finds the Ultimate, Ultimate Weapon, a chest consisting of a set of LEGO pieces that resemble their elemental powers, only to have it stolen by Garmadon, who remains resolute in taking over the city after Lloyd refuses his offer to replace a mutinous general. In an unexpected turnaround, Garmadon locks the ninja inside the temple as it begins to collapse. Lloyd realizes that "inner peace" means they must unleash their elemental power and escape from

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2944-736: The American Film Institute , the success of Bloodsport (1988), starring Van Damme, helped the resurgence of the martial arts film genre in the United States. In the 2000s, Thailand's film industry became an international force in the genre with the films of Tony Jaa and the cinema of Vietnam followed suit with The Rebel (2007) and Clash (2009). In more recent years, the Indonesian film industry has offered Merantau (2009) and The Raid: Redemption (2011). The Middle East has also participated in

3036-458: The Internet was reported in 2010 to have caused a decrease of visual acuity from 6/6 to 6/12 (20/20 to 20/40); after two months acuity recovered to 6/6, but some retinal damage remained. The US FDA issued a warning after two anecdotal reports it received of eye injury from laser pointers. Laser pointers available for purchase online can be capable of significantly higher power output than

3128-472: The Shaw Brothers , Godfrey Ho and other Hong Kong producers. These films were widely broadcast on North American television on weekend timeslots that were often colloquially known as Kung Fu Theater , Black Belt Theater or variations thereof. Inclusive in this list of films are commercial classics like The Big Boss (1971), Drunken Master (1978) and One Armed Boxer (1972). Those films had

3220-502: The "Ultimate, Ultimate Weapon" to stop Meowthra from destroying Ninjago, which can be found on the other side of the island. Garmadon overhears the conversation, follows close behind, and intercepts the ninja. Wu and Garmadon fight, and although the former manages to trap the latter in a cage, he falls off a bridge into the river below. Before being swept away, Wu tells the ninja they must find "inner peace". The ninja continues with Garmadon leading them, much to Lloyd's annoyance. Despite this,

3312-450: The IR laser output can be significant. What poses a special hazard for this unfiltered IR output is its presence in conjunction with laser safety goggles designed to only block the visible wavelengths of the laser. Red goggles, for example, will block most green light from entering the eyes, but will pass IR light. The reduced light behind the goggles may also cause the pupils to dilate, increasing

3404-696: The Red Lotus Temple (also translated as "The Burning of the Red Lotus Monastery"), a silent film directed by Chinese film director Zhang Shichuan and produced by the Mingxing Film Company . The film pioneered the martial arts film genre, and was the first kung fu action film ever created. The film is based on the popular Chinese novel "The Romance of the Red Lotus Temple", which is set in the Qing Dynasty and tells

3496-471: The Ultimate Weapon and fires it, only to discover it is actually a laser pointer that attracts a live-action cat named Meowthra. Garmadon points the laser at the ninja's mechs, which the cat destroys, but Lloyd breaks it. As Garmadon celebrates his victory, Lloyd unmasks himself and denounces his father, leaving Garmadon confused. Lloyd meets up with his friends and Wu, who tells them they must use

3588-415: The action, while others have more creative and complex plots and characters along with action scenes. Films of the latter type are generally considered to be artistically superior films, but many films of the former type are commercially successful and well received by fans of the genre. One of the earliest Hollywood movies to employ the use of martial arts was the 1955 film Bad Day at Black Rock , though

3680-689: The band was performing " Beth ". After performing the song, Criss nearly stormed off the stage, and lead singer Paul Stanley ripped into whoever had been manipulating the laser light: In every crowd, there's one or two people who don't belong [...] Now I know you want to [take] it to school tomorrow when you go to sixth grade, but [you should have left] it at home [before coming] to the show. According to FIFA stadium safety and security regulations, laser pointers are prohibited items at stadiums during FIFA football tournaments and matches. They are also prohibited in matches and competitions organised by UEFA . In 2008 laser pointers were aimed at players' eyes in

3772-1041: The beam's brightness can be influenced by Rayleigh scattering, as shorter wavelengths such as blue and violet light are scattered more readily in the atmosphere making the beam more visible in the air. The output power of a laser pointer is usually stated in milliwatts (mW). In the U.S., lasers are classified by the American National Standards Institute and Food and Drug Administration (FDA)—see Laser safety#Classification for details. Visible laser pointers (400–700 nm) operating at less than 1 mW power are Class 2 or II, and visible laser pointers operating with 1–5 mW power are Class 3A or IIIa. Class 3B or IIIb lasers generate between 5 and 500 mW; Class 4 or IV lasers generate more than 500 mW. The US FDA Code of Federal Regulations stipulates that "demonstration laser products" such as pointers must comply with applicable requirements for Class I, II, IIIA, IIIB, or IV devices. These are

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3864-487: The blue region by fluorescence. On ordinary non-fluorescent materials, and also on fog or dust, the color appears as a shade of deep violet that cannot be reproduced on monitors and print. A GaN laser emits 405 nm directly without a frequency doubler, eliminating the possibility of accidental dangerous infrared emission . These laser diodes are mass-produced for the reading and writing of data in Blu-ray drives (although

3956-538: The boy that he has the potential to be a great ninja warrior and tells him that they will start training at dawn. On 17 September 2013, Warner Bros. announced that it was developing an animated Ninjago film based on the Lego toy line Lego Ninjago . The Hageman Brothers , who wrote the Ninjago: Masters of Spinjitzu show and co-wrote the story of The Lego Movie , would write the adaptation. Charlie Bean

4048-544: The case of aircraft pilots, who may be dazzled or distracted at critical times. According to an MSNBC report there were over 2,836 incidents logged in the US by the FAA in 2010. Illumination by handheld green lasers is particularly serious, as the wavelength (532 nm) is near peak sensitivity of the dark-adapted eye and may appear to be 35 times brighter than a red laser of identical power output. Irresponsible use of laser pointers

4140-458: The claimed power of "laser pointer" products also includes the IR power (in DPSS technology only) still present in the beam (for reasons discussed below), comparisons on the basis of strictly visual-blue components from DPSS-type lasers remain problematic, and the information is often not available. Because of the higher neodymium harmonic used, and the lower efficiency of frequency-doubling conversion,

4232-502: The collapsing temple. As they fall off a cliff, Wu saves them with the ninja's flying ship, the Destiny's Bounty , and they head back to Ninjago City. Garmadon tries to defeat Meowthra with the Ultimate, Ultimate Weapon, only to end up eaten. Lloyd and the others arrive and begin fighting Garmadon's army. As Lloyd approaches Meowthra, he reveals to everyone that he is the Green Ninja and realizes that "green" means life and that his element

4324-468: The dot may reasonably be mistaken for that of a laser gun sight. Armed police have drawn their weapons in such circumstances. The output of laser pointers available to the general public is limited (and varies by country) in order to prevent accidental damage to the retina of human eyes . The U.K. Health Protection Agency recommended that "laser pointers generally available to the public should be restricted to less than 1 milliwatt as no injuries [like

4416-581: The film a more believable father-son atmosphere, Dave Franco and Justin Theroux recorded most of their lines where their characters interact with each other together in a single recording studio . During the process, Franco openly admitted he found himself uncontrollably crying while recording some of his lines. Franco stated "I found myself getting caught up in the moment and basically crying harder than I have in any live-action movie I've ever been in". Jackie Chan choreographed all of Master Wu's fight scenes in live action before they were recreated in animation for

4508-435: The film an average grade of "B+" on an A+ to F scale. Andrew Barker of Variety wrote: "Plenty entertaining and occasionally very funny, Ninjago nonetheless displays symptoms of diminishing returns, and Lego might want to shuffle its pieces a bit before building yet another film with this same model." Ed Potton of The Times gave the film a rating of 4 out of 5, saying, "Just as Toy Story did by featuring an owner of

4600-439: The film holds an approval rating of 55% based on 134 reviews, with an average rating of 5.8/10. The site's critical consensus reads, "Despite ample charm and a few solid gags, The Lego Ninjago Movie suggests this franchise's formula isn't clicking like it used to." On Metacritic , the film has a weighted average score of 55 out of 100 based on 33 critics, indicating "mixed or average reviews". Audiences polled by CinemaScore gave

4692-436: The film projected to gross anywhere from $ 27–44 million from 4,047 theaters in its opening weekend. After making $ 5.8 million on its first day, weekend projections were lowered to $ 21 million. It ended up debuting to $ 21.2 million, finishing third at the box office below It and Kingsman: The Golden Circle , and ranking as the lowest opening of the Lego franchise by over 50%. On review aggregation website Rotten Tomatoes ,

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4784-517: The film's musical score, with several artists performing new original songs for the film. A collaboration between production houses from the United States and Denmark, The Lego Ninjago Movie was released in the United States on 22 September 2017, in 2D, 3D , and Dolby Cinema formats. The film received mixed reviews from critics and was the franchise's first box-office disappointment , grossing only $ 123.1 million worldwide against its $ 70 million budget. A live-action reboot from Universal Pictures

4876-631: The film, in North America on 22 September 2017, and worldwide on 20 October 2017. It serves as the second spin-off video game and the third game in The Lego Movie franchise . The Lego Ninjago Movie grossed $ 59.3 million in the United States and Canada, and $ 63.8 million in other territories, for a worldwide total of $ 123 million against a $ 70 million budget. In North America, the film was released alongside Kingsman: The Golden Circle and Friend Request . Various tracking services had

4968-507: The film. Chan found the experience new to him as well as interesting. "Everything the stunt team does, the ninja do also", Chan commented. Mark Mothersbaugh , who composed the score for The Lego Movie , returned to score The Lego Ninjago Movie . The soundtrack was released through WaterTower Music on 15 September 2017. The Lego Ninjago Movie premiered at the Regency Village Theater on 16 September 2017, before it

5060-421: The fraction of IR power converted to 473 nm blue laser light in optimally configured DPSS modules is typically 10–13%, about half that typical for green lasers (20–30%). Lasers emitting a violet light beam at 405 nm may be constructed with GaN ( gallium nitride ) semiconductors. This is close to ultraviolet, bordering on the very extreme of human vision, and can cause bright blue fluorescence , and thus

5152-513: The genre include Jackie Chan, Jet Li , Sammo Hung , Yuen Biao , Donnie Yen , and Hwang Jang-lee . Sonny Chiba , Etsuko Shihomi , and Hiroyuki Sanada starred in numerous karate and jidaigeki films from Japan during the 1970s and early 1980s. Hollywood has also participated in the genre with actors such as Chuck Norris , Sho Kosugi , Jean-Claude Van Damme , Steven Seagal , Brandon Lee (son of Bruce Lee), Wesley Snipes , Gary Daniels , Mark Dacascos and Jason Statham . According to

5244-524: The genre with actors such as Youssef Mansour who became famous in the 1990’s for his Egyptian films that relied on martial arts. Women have also played key roles in the genre, including such actresses as Michelle Yeoh , Angela Mao and Cynthia Rothrock . In addition, western animation has ventured into the genre with the most successful effort being the internationally hailed DreamWorks Animation film franchise, Kung Fu Panda , starring Jack Black and Angelina Jolie . The Matrix (1999)

5336-404: The green-light output range, are used as astronomical object pointers for teaching purposes. Laser pointers make a potent signaling tool, even in daylight, and are able to produce a bright signal for potential search and rescue vehicles using an inexpensive, small and lightweight device of the type that could be routinely carried in an emergency kit . There are significant safety concerns with

5428-503: The hazard to the invisible IR light. Dual-frequency so-called YAG laser eyewear is significantly more expensive than single frequency laser eyewear, and is often not supplied with unfiltered DPSS pointer style lasers, which output 1064 nm IR laser light as well. These potentially hazardous lasers produce little or no visible beam when shone through the eyewear supplied with them, yet their IR-laser output can still be easily seen when viewed with an IR-sensitive video camera. In addition to

5520-424: The height of jumps. The minimalist style employs smaller sets and little space for improvised but explosive fight scenes, as seen by Jackie Chan's films. These techniques are sometimes used by real martial artists as well, depending on the style of action in the film. During the 1970s and 1980s, the most visible presence of martial arts films was the hundreds of English-dubbed kung fu and ninja films produced by

5612-503: The incident was investigated by several independent authorities, including the Belgium police, and that those authorities concluded that pointers brought in by the audience were the cause of the injuries. Laser pointers can be used in hiking or outdoor activities . It can be used as a rescue signal in emergencies which is visible to aircraft and other parties, during both day and night conditions, at extreme distances. For example, during

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5704-562: The invisible IR component in the beams of these visible lasers is difficult to filter out, and also because filtering it contributes extra heat which is difficult to dissipate in a small pocket "laser pointer" package, it is often left as a beam component in cheaper high-power pointers. This invisible IR component causes a degree of extra potential hazard in these devices when pointed at nearby objects and people. Early laser pointers were helium–neon (HeNe) gas lasers and generated laser radiation at 633 nanometers (nm), usually designed to produce

5796-576: The light emitted by the diodes is not blue, but distinctly violet). In mid-to-late 2011, 405 nm blue-violet laser diode modules with an optical power of 250 mW, based on GaN violet laser diodes made for Blu-ray disc readers, had reached the market from Chinese sources for prices of about US$ 60 including delivery. Laser pointers are often used in educational and business presentations and visual demonstrations as an eye-catching pointing device. Laser pointers enhance verbal guidance given to students during surgery. The suggested mechanism of explanation

5888-474: The most common type of DPSS lasers (also called diode-pumped solid-state frequency-doubled , DPSSFD). They are more complex than standard red laser pointers, because laser diodes are not commonly available in this wavelength range. The green light is generated through a multi-step process, usually beginning with a high-power (typically 100–300 mW) infrared aluminium gallium arsenide (AlGaAs) laser diode operating at 808 nm. The 808 nm light pumps

5980-622: The night in August 2010 two men and a boy were rescued from marshland after their red laser pen was spotted by rescue teams. Accurately aligned laser pointers are used as laser gunsights to aim a firearm . National Institute of Standards and Technology tests conducted on laser pointers labeled as Class IIIa or 3R in 2013 showed that about half of them emitted power at twice the Class limit, making their correct designation Class IIIb – more hazardous than Class IIIa. The highest measured power output

6072-602: The one reported below to have caused retinal damage] have been reported at this power". In the U.S., regulatory authorities allow lasers up to 5 mW. Studies have found that even low-power laser beams of not more than 5 mW can cause permanent retinal damage if gazed at for several seconds; however, the eye's blink reflex must be intentionally overcome to make this occur. Such laser pointers have reportedly caused afterimages , flash blindness and glare , but not permanent damage, and are generally safe when used as intended. A high-powered green laser pointer bought over

6164-418: The output frequency, not as DPSS lasers. These diode-based visible lasers do not produce IR light. Laser pointer users should not point laser beams at aircraft, moving vehicles, or towards strangers. Since laser pointers became readily available, they have been misused, leading to the development of laws and regulations specifically addressing use of such lasers. Their very long range makes it difficult to find

6256-400: The pointers typically available in stores. Dubbed "Burning Lasers", these are designed to burn through light plastics and paper, and can have very similar external appearances to their low-power counterparts. Because of their high power, many online retailers have warned high-power laser pointer users not to point them at humans or animals. Studies in the early twenty-first century found that

6348-554: The potential dangers of laser pointers brought in by audience members, at the Tomorrow Land Festival in Belgium in 2009, laser pointers brought in by members of the audience of 200 mW or greater were found to be the cause of eye damage suffered by several other members of the audience according to reports about the incident filed on the ILDA ( International Laser Display Association 's) Web site. The report says that

6440-459: The rights to the brand in April 2020, which was set for a five-year deal. Martial arts film Notable actors who have contributed to the genre include Zhang Ziyi , Tony Jaa , Bruce Lee , Jean-Claude Van Damme , Jet Li , Toshiro Mifune , Donnie Yen , Jackie Chan , Michelle Yeoh , and Sammo Hung . The first ever martial arts film was a Chinese film released in 1928, The Burning of

6532-487: The risk to the human eye from accidental exposure to light from commercially available class IIIa laser pointers having powers up to 5 mW seemed rather small; however, prolonged viewing, such as deliberate staring into the beam for 10 or more seconds, can cause damage. The UK Health Protection Agency warns against the higher-power typically green laser pointers available over the Internet, with power output of up to

6624-692: The safety hazards of unfiltered IR from DPSS lasers, the IR component may be inclusive of total output figures in some laser pointers. Though green (532 nm) lasers are most common, IR filtering problems may also exist in other DPSS lasers, such as DPSS red (671 nm), yellow (589 nm) and blue (473 nm) lasers. These DPSS laser wavelengths are usually more exotic, more expensive, and generally manufactured with higher quality components, including filters, unless they are put into laser pointer style pocket-pen packages. Most red (635 nm, 660 nm), violet (405 nm) and darker blue (445 nm) lasers are generally built using dedicated laser diodes at

6716-433: The same basic construction as DPSS green lasers. In 2006 many factories began production of blue laser modules for mass-storage devices , and these were used in laser pointers too. These were DPSS-type frequency-doubled devices. They most commonly emit a beam at 473 nm, which is produced by frequency doubling of 946 nm laser radiation from a diode-pumped Nd:YAG or Nd:YVO4 crystal (Nd-doped crystals usually produce

6808-449: The same pointer-style housings as regular laser pointers, and usually lack the IR filters found in professional high-powered DPSS lasers, because of costs and additional efforts needed to accommodate them. Though the IR from a DPSS laser is less collimated, the typical neodymium-doped crystals in such lasers do produce a true IR laser beam. The eye will usually react to the higher-powered visible light; however, in higher power DPSS lasers

6900-579: The scenes of Spencer Tracy performed barely any realistic fight sequences, but composed mostly of soft knifehand strikes . Martial arts films contain many characters who are martial artists and these roles are often played by actors who are real martial artists. If not, actors frequently train in preparation for their roles or the action director may rely more on stylized action or film making tricks like camera angles , editing , doubles , undercranking , wire work and computer-generated imagery . Trampolines and springboards used to be used to increase

6992-489: The second trailer also featuring " It Must Have Been Love " by Roxette , " Ain't Gonna Die Tonight " by Macklemore and "I Wanna Go Out" by American Authors . Over twenty Lego sets inspired by scenes from the film were released for the film including a set of Collectible Minifigures. A video game by TT Fusion based on the film, The Lego Ninjago Movie Video Game , was released on 22 September 2017, for Windows PC , Nintendo Switch , PlayStation 4 and Xbox One . The game

7084-422: The simplest pointers, as laser diodes are available in these wavelengths. The pointer is most common and mostly low-powered. The first red laser pointers released in the early 1980s were large, unwieldy devices that sold for hundreds of dollars. Today, they are much smaller and less expensive. The most common wavelengths are ca. 638 and 650 nm. Green laser pointers appeared on the market around 2000 and are

7176-411: The source of a laser spot. In some circumstances they make people fear they are being targeted by weapons, as they are indistinguishable from dot type laser reticles. The very bright, small spot makes it possible to dazzle and distract drivers and aircraft pilots, and they can be dangerous to sight if aimed at the eyes. In 1998, an audience member shone a laser at Kiss drummer Peter Criss 's eyes while

7268-456: The story of a group of martial artists who band together to defend their temple from raiders. The film is notable for its action sequences and fight scenes, which were groundbreaking for the time and helped establish the martial arts film genre. Asian films are known to have a more minimalist approach to film based on their culture. Some martial arts films have only a minimal plot and amount of character development and focus almost exclusively on

7360-468: The success of The Lego Movie , Warner Bros. announced that the film would be originally released in September 2016, which later changed to September 2017 in April 2015. The cast were signed in to voice the characters in 2016, from June to August. As with The Lego Movie and The Lego Batman Movie , the animation was provided by Animal Logic. Mark Mothersbaugh , who composed The Lego Movie , composed

7452-452: The telescope to a specific star or location. Laser alignment is much easier than aligning through using the eyepiece. Laser pointers are used in industry. For instance, construction companies may use high quality laser pointers to enhance the accuracy of showing specific distances, while working on large-scale projects. They have proven to be useful in this type of business because of their accuracy, which made them significant time-savers. What

7544-409: The third installment in The Lego Movie franchise as well as its second spin-off . The film stars the voices of Dave Franco , Michael Pena , Kumail Nanjiani , Abbi Jacobson , Zach Woods , Fred Armisen , Justin Theroux and Olivia Munn , as well as a live-action role by Jackie Chan (who also voiced Wu in the film). The film focuses on a teenage ninja Lloyd Garmadon , as he attempts to accept

7636-411: The toys, it reminds us that these films are about play and imagination. Yes, they're also effectively feature-length adverts for Lego, but this is rampant capitalism at its most arch and entertaining." Robbie Collin of Daily Telegraph gave it a 2 out of 5 rating, describing it as "a sad turn-up for a franchise which has already proven dazzlingly adept at staging Michael Bay -style madcap spectacle on

7728-420: The truth about his sinister father and learn what it truly means to be a ninja warrior as a new threat emerges to endanger his homeland. An animated feature film based on Ninjago was announced in September 2013 by Warner Bros., with The Hageman Brothers writing the adaptation while Bean was hired to direct the film with Phil Lord and Christopher Miller , Dan Lin and Roy Lee producing. By May 2014, following

7820-548: The two bond throughout their journey, while the ninja learn not to rely solely on their mechs to fight. The group survives an encounter with Garmadon's fired generals, and Garmadon teaches Lloyd to throw. They eventually crash down onto the Temple of Fragile Foundations, Garmadon's childhood home. He tells Lloyd that his mother, Koko, was once a warrior named Lady Iron Dragon and that he wishes he had stayed with them after deciding to conquer Ninjago, but couldn't change his ways, which

7912-424: The use of laser pointers. Most jurisdictions have restrictions on lasers above 5  mW . If aimed at a person's eyes, laser pointers can cause temporary visual disturbances or even severe damage to vision. There are reports in the medical literature documenting permanent injury to the macula and the subsequent permanent loss of vision after laser light from a laser pointer was shone at a human's eyes. In rare cases,

8004-440: The wider entertainment industry, and many venues ban entry to those in possession of pointers as a potential hazard. Very occasionally laser gloves, which are sometimes mistaken for pointers, are seen being worn by professional dancers on stage at shows. Unlike pointers, these usually produce low-power highly divergent beams to ensure eye safety. Laser pointers have been used as props by magicians during magic shows. As an example of

8096-905: The wuxia novels of Jin Yong and Gu Long directly led to the prevalence of wuxia period films. Outside of the Chinese speaking world the most famous wuxia film made was the Ang Lee film Crouching Tiger, Hidden Dragon (2000), which was based on the Wang Dulu series of wuxia novels: it earned four Academy Awards , including one for Best Foreign Film. Martial arts westerns are usually American films inexpensively filmed in Southwestern United States locations, transposing martial arts themes into an "old west" setting; e.g., Red Sun with Charles Bronson and Toshiro Mifune . Laser pointer A laser pointer or laser pen

8188-433: Was 66.5 milliwatts; more than 10 times the limit. Green laser light is generated from an infrared laser beam, which should be confined within the laser housing; however, more than 75% of the devices tested were found to emit infrared light in excess of the limit. Laser pointers, with their very long range, are often maliciously shone at people to distract or annoy them, or for fun. This is considered particularly hazardous in

8280-415: Was announced as director, and The Lego Movie team of Dan Lin , Roy Lee , and Phil Lord and Chris Miller as producers. On 27 June 2016, the film's voice cast was announced, including Dave Franco , Michael Peña , Kumail Nanjiani , Zach Woods , Fred Armisen , Jackie Chan , and Abbi Jacobson . Additional voice cast included Justin Theroux as Lord Garmadon and Olivia Munn as Koko. In order to give

8372-418: Was shown with screenings of Storks , which took the original 23 September release date. On 8 February 2017, the first trailer was released. This trailer was shown in front of screenings of The Lego Batman Movie . On 22 July 2017, a second trailer for the film was shown as part of San Diego Comic-Con and released on YouTube later in the day. Both trailers feature the song " Bad Blood " by Taylor Swift , with

8464-527: Was widely released in the United States by Warner Bros. Pictures on 22 September 2017, in 3D, RealD 3D, and Dolby Cinema. It was originally scheduled for a 23 September 2016 release. This release date was given to Storks instead. The film was released in Denmark on 21 September 2017. It was released in the Philippines on 27 September 2017. A short film, The Master , that promoted the feature film

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