Objective for an endoscope

Details Objective for an endoscope Objective for an endoscope

1984-06-06

1986-11-11

Corbin, John K.

350465, G02B 934, G02B 960

Patent

active

046219102

ABSTRACT:
An objective for an endoscope which is to be used in an endoscope employing relay lenses and comprises, in the order from the object side, a negative lens unit, a positive lens unit and a lens unit comprising a meniscus lens arranged to be concave toward the object side, the objective for an endoscope being arranged that the dispersion in the field angle is small and arranged to be capable of correcting curvature of field of the endoscope optical system as a whole satisfactorily favorably.

REFERENCES:
patent: 4025155 (1977-05-01), Imai

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