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2. Gain (projection screens) - Wikipedia

   en.wikipedia.org/wiki/Gain_(projection_screens)

   Screens with a higher brightness than this standard are rated with a gain higher than 1.0, while screens with lower brightness are rated from 0.0 to 1.0. Since a projection screen is designed to scatter the impinging light back to the viewers, the scattering can be highly diffuse or highly concentrated.

3. LCD projector - Wikipedia

   en.wikipedia.org/wiki/LCD_projector

   Powell, Evan (2002). "Epson's 730c: Best of Class in 2000-Lumen Portables", projectorcentral.com; Business Wire (2005). "Leading Projector Manufacturers Fujitsu, Hitachi, Panasonic, Sanyo and Sony Join Forces with Epson to Educate the Market about; Benefits of Three-Panel, Liquid Crystal Display Technology", projectorcentral.com Lawler, Richard ...

4. IMAX - Wikipedia

   en.wikipedia.org/wiki/IMAX

   IMAX is a proprietary system of high-resolution cameras, film formats, film projectors, and theaters known for having very large screens with a tall aspect ratio (approximately either 1.43:1 or 1.90:1) and steep stadium seating, with the 1.43:1 ratio format being available only in few selected locations.

5. Black Widow (paint mix) - Wikipedia

   en.wikipedia.org/wiki/Black_Widow_(paint_mix)

   Black Widow (also known as a Black Widow Ultra in Europe) is a non-commercial open source project to design a paint mix for the base of a DIY projection screen.Anonymous DIYers responsible for popularizing Black Widow in the DIY community include Mechman Alternators (US), Wbassett (US) and Custard10 (EU). [1]

6. Projector - Wikipedia

   en.wikipedia.org/wiki/Projector

   A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers. A virtual retinal display, or retinal ...

7. Projection screen - Wikipedia

   en.wikipedia.org/wiki/Projection_screen

   A grey screen may thus succeed almost as well in delivering a bright-looking image, or fail to do so in other circumstances. Compared to a white screen, a grey screen reflects less light to the room and less light from the room, making it increasingly effective in dealing with the light originating from the projector. Ambient light originating ...