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A 1960 slide projector. A slide projector is an optical device for projecting enlarged images of photographic slides onto a screen.Many projectors have mechanical arrangements to show a series of slides loaded into a special tray sequentially.
A carousel slide projector. The example pictured is a Kodak Carousel model 4400, dating from the mid-1980s. A carousel slide projector is a slide projector that uses a rotary tray to store slides, used to project slide photographs and to create slideshows. It was first patented on May 11, 1965, by David E. Hansen of Fairport, New York.
The Slide Cube Projector is a slide projector and system, manufactured and marketed by Bell & Howell, which was introduced in 1970 and marketed through the 1980s.The projector derived its name from its transparent cubical plastic slide storage magazine, approximately 5.5 cm (2.2 in) in each dimension (a bit larger than a standard 135 film slide mount), that held 36 to 44 slides, depending on ...
Sawyer's, Inc. was an American manufacturer and retailer of slide projectors, scenic slides, View-Master reels and viewers, postcards, and related products, based in Portland, Oregon. Founded in 1914 as a photo-finishing company, Sawyer's began producing and selling View-Masters in 1939, and that soon became its primary product.
It was increasingly used for education during the 19th century. Since the late 19th century, smaller versions were also mass-produced as toys. The magic lantern was in wide use from the 18th century until the mid-20th century when it was superseded by a compact version that could hold many 35 mm photographic slides: the slide projector.
A stereopticon is a slide projector or relatively powerful "magic lantern", which has two lenses, usually one above the other, and has mainly been used to project photographic images. These devices date back to the mid 19th century, [ 1 ] and were a popular form of entertainment and education before the advent of moving pictures .