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With 8% of global market share, the Optoma brand in 2011 was the second largest projector brand, behind the Japanese company Epson. There are two specifications of projectors: a liquid-crystal display (LCD) projector that Epson makes and a Digital Light Processing (DLP) projector using chipsets Texas Instruments that Optoma makes. [1]
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 .
Epson owns the technology and has branded it as "3LCD". To market 3LCD projector technology, Epson also set up a consortium called the "3LCD Group" in 2005 with other projector manufacturer licensees of 3LCD technology that use it in their projector models. Early LCD systems were used with existing overhead projectors.
A projector in a standard form factor: The PG-D2870 projector from Sharp, which uses Digital Light Processing technology An image from a video projector in a home cinema. A video projector is an image projector that receives a video signal and projects the corresponding image onto a projection screen using a lens system.
Epson has released a firmware patch to bring the R-D1 up to the full functionality of its successor, being the first digital camera manufacturer to make such an upgrade available for free. [citation needed] In September 2012, Epson introduced a printer called the Expression Premium XP-800 Small-in-One, with the ability to print wirelessly. [20]
This is a list of educational software that is computer software whose primary purpose is teaching or self ... Google Classroom; ILIAS (GPL) Kannu; LON-CAPA - free ...
Projector/Laser light curtain – A dual infrared laser device is positioned in the top middle area of a flat surface. The laser beam sweeps across the surface creating an invisible curtain. The projector, usually an ultra short throw projector) has a built in camera with an infrared filter that scans the projected area.
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.