Illumination optical system for an endoscope

Details Illumination optical system for an endoscope Illumination optical system for an endoscope

1989-03-20

1990-08-28

Sugarman, Scott J.

350 9610, 350 9624, 350 9626, 350448, 350452, G02B 304, G02B 308, G02B 600, G02B 2326

Patent

active

049520407

ABSTRACT:
An illumination optical system for an endoscope comprising a light source, and a lens system arranged on the object side of said light source and having at least one aspherical surface, said illumination optical system being so designed as to satisfy the following conditions (1) through (3):

REFERENCES:
patent: 4266534 (1981-05-01), Ogawa
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patent: 4575195 (1986-03-01), Hoogland
patent: 4610513 (1986-09-01), Nishioka et al.
patent: 4662725 (1987-05-01), Nisioka
patent: 4674844 (1987-06-01), Nishioka et al.
patent: 4721372 (1988-01-01), Yokota
patent: 4733937 (1988-03-01), Lia et al.

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