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  2. Overhead projector - Wikipedia

    en.wikipedia.org/wiki/Overhead_projector

    An overhead projector works on the same principle as a slide projector, in which a focusing lens projects light from an illuminated slide onto a projection screen where a real image is formed. However some differences are necessitated by the much larger size of the transparencies used (generally the size of a printed page), and the requirement ...

  3. Projection panel - Wikipedia

    en.wikipedia.org/wiki/Projection_panel

    It works with an overhead projector. The panel consists of a translucent LCD, and a fan to keep it cool. The projection panel sits on the bed of the overhead projector, and acts like a piece of transparency. The panels have a VGA input, and sometimes Composite (RCA) and S-Video input. Later models have remotes, with functions such as 'freeze ...

  4. 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 .

  5. Transparency (projection) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(projection)

    Overhead projector in operation, with a transparency being flashed A transparency , also known variously as a viewfoil or foil (from the French word "feuille" or sheet), or viewgraph , is a thin sheet of transparent flexible material, typically polyester (historically cellulose acetate ), onto which figures can be drawn.

  6. Kodak - Wikipedia

    en.wikipedia.org/wiki/Kodak

    Kodak ended the production of slide projectors in October 2004. [ 196 ] One early Kodak product bridging digital technology with projection techniques was the Kodak Datashow, featuring a translucent liquid crystal display panel that was placed on an overhead projector instead of a conventional transparency, with the panel being connected to the ...

  7. Category:Projectors - Wikipedia

    en.wikipedia.org/wiki/Category:Projectors

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  8. LCD projector - Wikipedia

    en.wikipedia.org/wiki/LCD_projector

    It is a modern equivalent of the slide projector or overhead 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 ...

  9. Document camera - Wikipedia

    en.wikipedia.org/wiki/Document_camera

    A document camera can enlarge the small print in books and project a printed page as if it were a traditional transparency by using a zoom feature. Document cameras do not require the lights to be dimmed in the room they are used in, contrary to what overhead projectors require to be visible. [3]

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