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  2. Opaque projector - Wikipedia

    en.wikipedia.org/wiki/Opaque_projector

    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 transparent objects (such as films), and from the epidiascope , which is capable of projecting images of both ...

  3. LCD projector - Wikipedia

    en.wikipedia.org/wiki/LCD_projector

    To display images, LCD (liquid-crystal display) projectors typically send light from a metal-halide lamp through a prism or series of dichroic filters that separates light to three polysilicon panels – one each for the red, green and blue components of the video signal. As polarized light passes through the panels (combination of polarizer ...

  4. Optoma - Wikipedia

    en.wikipedia.org/wiki/Optoma

    Its primary products are projectors and digital image processing equipment. Founded in 2002, it is a subsidiary of the Taiwanese electronics and manufacturing company Coretronic. It was listed on the Taiwan Stock Exchange in 2007. With 8% of the projector global market share in 2011, the Optoma brand was the second largest projector brand ...

  5. List of CRT video projectors - Wikipedia

    en.wikipedia.org/wiki/List_of_CRT_video_projectors

    Internal prism focus system with a single projection lens. ECP 2100 [24] ... 50 inch fixed screen projector with two projector lenses with three tubes. 60 fL on ...

  6. Overhead projector - Wikipedia

    en.wikipedia.org/wiki/Overhead_projector

    In contrast, a modern LCD or DLP projector often uses an Ultra-high-performance lamp which has a higher luminous efficacy and lasts for thousands of hours. [5] A drawback of that technology is the warm up time required for such lamps. Older overhead projectors used a tubular quartz bulb which was mounted above a bowl-shaped polished reflector.

  7. Digital light processing - Wikipedia

    en.wikipedia.org/wiki/Digital_Light_Processing

    The PhlatLight LEDs are also used in a new class of ultra-compact DLP front projector commonly referred to as a "pocket projector" and have been introduced in new models from LG Electronics (HS101), Samsung (SP-P400) and Casio (XJ-A series). Home Theater projectors will be the next category of DLP projectors that will use PhlatLight LED technology.

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