![]() In the late 20th century, they became commonplace in home cinema. In schools and other educational settings, they are sometimes connected to an interactive whiteboard. ![]() Video projectors are used for many applications such as conference room presentations, classroom training, home cinema, movie theaters and concerts, having mostly replaced overhead, slide and conventional film projectors. Projectors using RB lasers use a blue laser with a phosphor wheel in conjunction with a conventional solid state red laser. Each projector can use up to two racks, and several monochrome lasers are mounted on each rack, the light of which is mixed and transmitted to the projector booth using optical fibers. Remote fiber optic RGB laser racks can be placed far away from the projector, and several racks can be housed in a single, central room. (White LEDs do not use lasers.) A wheel is used in order to prolong the lifespan of the phosphor, as it is degraded by the heat generated by the laser diode. If a blue laser is used, a phosphor wheel is used to turn blue light into white light, which is also the case with white LEDs. Video projectors use a very bright ultra-high-performance lamp (a special mercury arc lamp), Xenon arc lamp, LED or solid state blue, RB, RGB or remote fiber optic RGB lasers to provide the illumination required to project the image, and most modern ones can correct any curves, blurriness, and other inconsistencies through manual settings. Send us feedback about these examples.Projected image from a video projector in a home cinema.Ī video projector is an image projector that receives a video signal and projects the corresponding image on a projection screen using a lens system. These examples are programmatically compiled from various online sources to illustrate current usage of the word 'projection.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. ![]() ![]() Mike Rodak | al, Revenue for the quarter came in just shy of $40 billion, up 11% from a year ago and beating projections for $38.55 billion. Seth Borenstein,, They were joined in the first-round projection by offensive tackle J.C. Sasha Hupka, The Arizona Republic, And scientists worry that the phenomenon isn’t limited to this one glacier, raising questions about previous projections of melting rates on the world’s vulnerable ice sheets. IEEE Spectrum, Numbers for this spring are projections, as the university does not reconcile its final commencement numbers until June, after all ceremonies are complete. Jason Farago, New York Times, However, as these projection lenses grew larger, so did their weight. Marina Pitofsky, USA TODAY, There’s a similar backward projection in Turkey’s television dramas, which are hugely popular not just here but internationally, with hundreds of millions of viewers throughout the Muslim world, in Germany, in Mexico, all over. Matt Ross, Washington Post, Treasury Secretary Janet Yellen last week updated her timeline for when the government could run out of money, saying her projection is now by June 5. Recent Examples on the Web The weather during those summers was given loose consideration in our projections for the one that is about to begin.
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