Objective lens system for endoscopes and image pickup system equ

Details Objective lens system for endoscopes and image pickup system equ Objective lens system for endoscopes and image pickup system equ

1988-11-18

1991-01-22

Arnold, Bruce Y.

350439, 350445, G02B 1318

Patent

active

049866427

ABSTRACT:
An image pickup system using an objective lens system for endoscopes consisting of an objective lens system comprising a front lens unit having negative refractive power and a rear lens unit having positive refractive power, and an optical system comprising an image sensor, and so adapted as to permit disposing the image sensor obliquely or parallel relatively to the optical axis by prolonging back focal length of said objective lens system and arranging an optical path deflecting system between said objective lens system and said image sensor.

REFERENCES:
patent: 4598980 (1986-07-01), Doi et al.
patent: 4662725 (1987-05-01), Nisioka
patent: 4674844 (1987-06-01), Nishioka et al.
patent: 4720178 (1988-01-01), Nishioka et al.

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