Lens device and projector having diaphragm mechanisms with...

Details Lens device and projector having diaphragm mechanisms with... Lens device and projector having diaphragm mechanisms with...

2006-09-26

2006-09-26

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Light shield, mask, hood, or diaphragm

C353S069000, C353S070000, C353S085000, C353S101000, C349S005000, C349S007000

Reexamination Certificate

active

07111947

ABSTRACT:
The invention provides a lens device of a projector for projecting light that has been modulated and emitted by a display device, wherein said lens device has an optical axis and is arranged telecentric to rays of light emitted from said display device, said lens device has a diaphragm mechanism having an aperture at such a position that the lens device causes principal rays emitted from various locations on the display device to intersect with the optical axis, and said aperture is substantially square.

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