Anamorphic converter and image projection system

Details Anamorphic converter and image projection system Anamorphic converter and image projection system

2011-04-05

2011-04-05

Martinez, Joseph (Department: 2873)

Optical: systems and elements

Lens

Anamorphic

Reexamination Certificate

active

07920331

ABSTRACT:
An anamorphic converter includes, from a projected-surface side, a first group and a second group. The first group includes one or more lens elements and has a negative power at least in a main magnification direction. The second group includes one or more lens elements and has a positive power at least in the main magnification direction. Of optical surfaces, a last surface of the first group and a first surface of the second group: [1] have a power in both main magnification and sub-magnification directions; [2] are convex toward the projected-surface side in both main magnification and sub-magnification directions in a region having an area that is ¼ or more of an optical effective region area including a center portion of each of the last and first optical surfaces; and [3] at least one of the last and first optical surfaces is a free curved surface.

REFERENCES:
patent: 5930050 (1999-07-01), Dewald
patent: 6512636 (2003-01-01), Schauss
patent: 6678095 (2004-01-01), Kelly

Affiliated with

Also associated with

Rating

Anamorphic converter and image projection system does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2646571