Projection display apparatus

Details Projection display apparatus Projection display apparatus

2006-12-11

2009-06-23

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

With support

C359S645000

Reexamination Certificate

active

07551377

ABSTRACT:
The projection display apparatus includes rotation regulating elements for inhibiting a rotation of the mount ring in a tightening direction, and a stopper element displaceable between a non-locked position and a locked position, wherein the stopper element is displaced to the non-locked position when the mount ring is rotated to a rotating position in a loosening direction from a predetermined position in the tightening direction, and is displaced to the locked position when the mount ring is rotated to the predetermined position in the tightening direction.

REFERENCES:
patent: 4062030 (1977-12-01), Starp
patent: 6292142 (2001-09-01), Pittman
patent: 2004-54040 (2004-02-01), None

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