Catadioptric objective

Details Catadioptric objective Catadioptric objective

1982-12-09

1984-12-11

Corbin, John K.

G02B 1708

Patent

active

044874839

ABSTRACT:
The invention relates to a compact, high-aperture, catadioptric objective. Such an objective comprises a negative lens, a main mirror disposed on the peripheral area of a surface of this lens, a positive front lens, a counter mirror facing the main mirror and disposed on the central area of a surface of the front lens, and a field lens adjacent to the negative lens.
It is an object of the invention to provide a light-weight, low-cost structure for an objective of the above kind, without detoriating the advantageous optical characteristics. This object is achieved by disposing the field lens in spaced relation to the negative lens, while dimensioning the composite objective in such a manner that ##STR1## and

REFERENCES:
patent: 4273425 (1981-06-01), Canzek

Affiliated with

Also associated with

Rating

Catadioptric objective does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1460361