Projection lens system and projector

Details Projection lens system and projector Projection lens system and projector

2007-01-30

2007-01-30

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With field curvature shaping

C359S736000

Reexamination Certificate

active

11131954

ABSTRACT:
A projection lens system of the present invention projects projection light from a light modulator onto a screen and includes a first lens group disposed closest to the screen, the first lens group including a first meniscus lens with negative refractive power that is positioned closest to the screen and is convex on a screen side, a cemented lens that is positioned on a light modulator side, and a means for bending an optical path between the first meniscus lens and the cemented lens. The means for bending the optical path is disposed between the negative meniscus lens and the cemented lens of the first lens group. Since the cemented lens of the first lens group is disposed in line with the lenses in the second lens group, the lens system of this invention is produced with a slim overall construction even if the cemented lens is in the first lens group.

REFERENCES:
patent: 2004/0027497 (2004-02-01), Jeon et al.
patent: 09-218379 (1997-08-01), None
patent: 2001-042211 (2001-02-01), None

Affiliated with

Also associated with

Rating

Projection lens system and projector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Projection lens system and projector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection lens system and projector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3794042