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The first document camera, also known as a visualizer, was developed by WolfVision and Elmo and launched at the Photokina Trade Fair in 1988. [4] [5] The widespread use of computers, projectors, and popular presentation programs such as Microsoft PowerPoint in meeting rooms led to overhead projectors being used less frequently. [citation needed]
The company was renamed G.K. Elmo-sha (エルモ社, "Elmo & Co.") in 1933, an abbreviation for "Electricity Light Machine Organization". [2] The first 8mm projector (model Hayabusa) was released three years later, in 1936, [ 1 ] and the Elmoflex series of 6×6 TLR cameras was introduced in the early 1940s. [ 3 ]
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 ...
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 .
Slide projector light generation and collimation system: from left to right, mirror / reflector, bulb, condenser lens 1, green-tinted heat-absorbing glass, condenser lens 2; a centrifugal fan, used to cool the bulb, is visible at the top of the picture. A projector has three main optical elements: [3]: 39–40
A FedEx contract worker has been busted for allegedly dumping dozens of packages in the woods to avoid working late. Latavion Lewis was arrested after a post office in Bonifay, Florida, received ...
An overhead projector projecting onto a pull-down screen. Pull-down screens (also known as manual wall screens) are often used in spaces where a permanently installed screen would require too much space. These commonly use painted fabric that is rolled in the screen case when not used, making them less obtrusive when the screen is not in use.
Costco membership also gives shoppers access to the club's travel deals. The company revealed its largest booking in the last year was a 150-day cruise around the world.. CFO Gary Millerchip said ...