Symmetrical wide angle lens with improved illumination uniformit

Details Symmetrical wide angle lens with improved illumination uniformit Symmetrical wide angle lens with improved illumination uniformit

1987-04-30

1988-11-08

Corbin, John K.

G02B 964

Patent

active

047831570

ABSTRACT:
A ten-element wide angle lens is optimized for projecting full frame images of a document at an object plane onto a photosensitive image plane. The lens has a semi-field angle greater than 38.degree., a relative aperture of f/10, and a magnification range of 0.65 to 1.55. The lens is characterized by improved relative illumination, improved pupil coma, and partial cos.sup.4 illumination falloff compensation.

REFERENCES:
patent: 2516724 (1950-07-01), Roossinov
patent: 2730016 (1956-01-01), Bertele
patent: 2821113 (1958-01-01), Baker
patent: 3154628 (1964-10-01), Bertele
patent: 3777135 (1973-12-01), Rees
patent: 3973831 (1976-08-01), Minoura
patent: 4037937 (1977-07-01), Minoura
patent: 4298274 (1981-11-01), Rees et al.
patent: 4331391 (1982-05-01), Baker
patent: 4537499 (1985-08-01), Ritter et al.
Technical Information, by Schneider, G-Claron Wa(6 pp.).

Affiliated with

Also associated with

Rating

Symmetrical wide angle lens with improved illumination uniformit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Symmetrical wide angle lens with improved illumination uniformit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Symmetrical wide angle lens with improved illumination uniformit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-461868