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2. Overhead projector - Wikipedia

   en.wikipedia.org/wiki/Overhead_projector

   Overhead projector. An overhead projector (often abbreviated to OHP ), like a film or slide projector, uses light to project an enlarged image on a screen, allowing the view of a small document or picture to be shared with a large audience. In the overhead projector, the source of the image is a page-sized sheet of transparent plastic film ...

3. Digital light processing - Wikipedia

   en.wikipedia.org/wiki/Digital_Light_Processing

   Digital light processing ( DLP) is a set of chipsets based on optical micro-electro-mechanical technology that uses a digital micromirror device. It was originally developed in 1987 by Larry Hornbeck of Texas Instruments. While the DLP imaging device was invented by Texas Instruments, the first DLP-based projector was introduced by Digital ...

4. Rear-projection television - Wikipedia

   en.wikipedia.org/wiki/Rear-projection_television

   Rear-projection television ( RPTV) is a type of large-screen television display technology. Until approximately 2006, most of the relatively affordable consumer large screen TVs up to 100 in (250 cm) used rear-projection technology. A variation is a video projector, using similar technology, which projects onto a screen .

5. I tried the Bomaker Polaris 4K projector — and it's a ...

   www.aol.com/entertainment/tried-bomaker-polaris...

   Energizer Connect Smart Plug, No Hub Required, $20 (was $50), walmart.com. Philips Hue White E26 Smart Bulb 2-Pack, $80, (was $141), walmart.com. Wonderful Home Security Network, $50 (was $100 ...

6. Opaque projector - Wikipedia

   en.wikipedia.org/wiki/Opaque_projector

   Opaque projector. An episcope which was used in a University of Cambridge lecture hall in the late 1800s. The opaque projector, or episcope is a device which displays opaque materials by shining a bright lamp onto the object from above. The episcope must be distinguished from the diascope, which is a projector used for projecting images of ...

7. Samsung Galaxy Beam i8530 - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_Beam_I8530

   Website. www .samsung .com /in /galaxybeam /. The Samsung Galaxy Beam i8530 (also known as the Galaxy Beam) is a projector-enabled smartphone produced by Samsung. Its main feature is a built-in DLP nHD projector at up to 50 inches (1,300 mm) in size at 15 lumens . In February 2012 the i8530 Galaxy Beam was presented at the Mobile World Congress ...