Projection optical system and image projecting apparatus

Details Projection optical system and image projecting apparatus Projection optical system and image projecting apparatus

2011-05-24

2011-05-24

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Reflector

Plural

C353S077000, C353S078000, C353S079000, C353S098000, C353S122000, C359S649000, C359S650000, C359S651000, C359S749000, C359S750000, C359S751000

Reexamination Certificate

active

07946717

ABSTRACT:
A projection optical system including a first optical system configured to form a second image conjugate to a first image and a second optical system configured to include a reflective optical element which reflects light from the second image and to project a third image conjugate to the second image onto a projection surface is provided, wherein the first optical system has a Petzval sum with a sign opposite to a sign of a Petzval sum of the second optical system.

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