Optical: systems and elements – Projection screen
Patent
1997-08-29
2000-02-22
Metjahic, Safet
Optical: systems and elements
Projection screen
359449, 353 74, 353 94, 353119, G03B 2156, G03B 2115
Patent
active
060287012
ABSTRACT:
A mechanical package for an LCD projector includes approximately equally sized tower and enclosure portions. The tower portion is supported on forward protruding legs and contains optical and electronic modules that slide into its rear and are also accessible from the front of the enclosure portion. The enclosure portion supports on its front a removable projection screen and is mounted vertically offset on the tower portion. A triply folded optical axis provides a suitably long light pathway for projecting a large image on the projection screen without requiring the package to have an undue depth. To stack multiple packages vertically, side margins of the tower portion top surface include L-channels that receive the legs of a package stacked above. The enclosure portion further includes openings that receive the legs protruding from the tower portion stacked above. The legs are supported within the enclosure portion by sliding into U-brackets that are attached to the inner surfaces of the enclosure portion. Fasteners are passed through aligned holes in the legs and U-brackets to secure the vertically stacked packages. To stack multiple packages horizontally, the same fasteners that pass through aligned holes in the legs and U-brackets of the vertically stacked packages are also passed through the corresponding aligned holes in the legs and U-brackets of horizontally adjacent packages.
REFERENCES:
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patent: 5299017 (1994-03-01), Furuno
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"The next level in display technology, Clarity Visual Systems," product brochure, 1996.
Takeuchi et al., "A 750-TV-Line-Resolution Projector Using 1.5-Megapizel a-Si TFT LC Modules," SID 91 Digest, pp. 415-418.
"The next level in display technology, Clarity Visual Systems," a four page product brochure copyright 1996, Clarity Visual Systems, Wilsonville, Oregon.
Clifton Benjamin R.
Fogarty John P.
Gulick Paul E.
Kubeja David B.
Clarity Visual Systems, Inc.
Mahoney Christopher
Metjahic Safet
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