Slide projector


Slide projector

A slide projector is an opto-mechanical device to view photographic slides. It has four main elements: a fan-cooled electric light bulb or other light source, a reflector and "condensing" lens to direct the light to the slide, a holder for the slide and a focusing lens. A flat piece of heat absorbing glass is often placed in the light path between the condensing lens and the slide, to avoid damaging the latter. This glass transmits visible wavelengths but absorbs infrared. Light passes through the transparent slide and lens, and the resulting image is enlarged and projected onto a perpendicular flat screen so the audience can view its reflection. Alternatively the image may be projected onto a translucent "rear projection" screen, often used for continuous automatic display for close viewing. This form of projection also avoids the audience's interrupting the light stream or bumping into the projector.

Slide projectors were common in the 1950s and 1960s as a form of entertainment; family members and friends would gather to view slideshows.

In-home photographic slides and slide projectors have largely been replaced by low cost paper prints, digital cameras, DVD media, video display monitors and digital projectors.

As of October 2004, Kodak no longer manufactures slide projectors. It is also increasingly difficult in some countries to locate photo processors who will process slide film. Fact|date=June 2007

Types of projector

* Carousel slide projectors (includes tray-style projectors)
* Dual slide projectors
* Large format slide projectors
* Overhead projectors
* Single slide projectors (manual form)
* Viewer slide projectors
* Slide Cube projectors
* Stereo slide projectors (projects two slides simultaneously with different polarizations; slides appear as three-dimensional with polarizing glasses)

ee also

* Film format
* Projector
* Slideshow

External links

* [http://slideprojector.kodak.com/ Kodak: Slide projectors family]


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Slide projector — Projector Pro*ject or, n. [Cf. F. projeteur.] 1. One who projects a scheme or design; hence, one who forms fanciful or chimerical schemes. L Estrange. [1913 Webster] 2. an optical instrument which projects an image from a transparency or an… …   The Collaborative International Dictionary of English

  • slide projector — noun projector that projects an enlarged image of a slide onto a screen • Hypernyms: ↑projector • Hyponyms: ↑magic lantern * * * ˈslide projector 7 [slide projector] noun a pie …   Useful english dictionary

  • slide projector — slide pro.jector n a piece of equipment that shines a light through ↑slides so that pictures appear on a screen or wall …   Dictionary of contemporary English

  • slide projector — noun A device that projects an enlarged image of a photographic slide onto a screen See Also: film projector …   Wiktionary

  • slide projector — device the enables the displaying of slides enlarged on a screen …   English contemporary dictionary

  • Large Format Slide Projector — A Large Format Slide Projector (also often called Large Format Projector or Large Image Projector ) is a kind of slide projector which has a very powerful light source (up to 12 thousand kilowatts using arc lamps). Therefore it is necessary to… …   Wikipedia

  • Carousel slide projector — A carousel slide projector is a common form of slide projector, used to create slideshows. A separate, circular tray holds several slides (usually 20, 36, 80, or 140) 35mm slides, and is filled with each slide placed in upside down and backwards …   Wikipedia

  • Projector — Pro*ject or, n. [Cf. F. projeteur.] 1. One who projects a scheme or design; hence, one who forms fanciful or chimerical schemes. L Estrange. [1913 Webster] 2. an optical instrument which projects an image from a transparency or an opaque image… …   The Collaborative International Dictionary of English

  • Projector — may refer to:* Video projector, a device that projects a video signal from computer, home theater system etc. * Movie projector, a device that projects moving pictures from a filmstrip * Slide projector, a device that projects a still image with… …   Wikipedia

  • Slide — could be related to any of these.Mechanical*Evacuation slide *Landslide the movement of soil, mud or rock down a slope. *Playground slide a smooth, sloped surface down which (usually) children slide while sitting down. *Water slide a popular… …   Wikipedia


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