Illumination optical system for endoscopes

Details Illumination optical system for endoscopes Illumination optical system for endoscopes

1988-11-17

1990-05-29

Dzierzynski, P. M.

350 9618, 350 9624, G02B 300, G02B 600

Patent

active

049290703

ABSTRACT:
An illumination optical system for endoscopes wherein, in order to make it possible to make an illumination of a uniform and sufficient brightness over a wide range of the surface of an object to be observed, a cover lens arranged in front of the exit end face of a light guide is so formed that its surface on the object side may be a convex aspherical surface or may be a convex spherical surface or may have a concave center part and larger in the refractive index in the peripheral part than in the center part. The light guide may be a light emitting device.

REFERENCES:
patent: 4101196 (1978-07-01), Imai
patent: 4113354 (1978-09-01), Yamasita et al.
patent: 4266534 (1981-05-01), Ogawa
patent: 4415240 (1983-11-01), Nishioka et al.
patent: 4443069 (1984-04-01), Mihara
patent: 4548480 (1985-10-01), Yamamoto et al.
patent: 4620773 (1986-11-01), Fukuda

Affiliated with

Also associated with

Rating

Illumination optical system for endoscopes does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-517427