Illumination optical system of an ophthalmologic instrument

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

351206, 351221, A61B 310

Patent

active

054325692

ABSTRACT:
An illumination optical system of an ophthalmologic instrument capable of avoiding the decrease of illumination efficiency without narrowing the width of a ring image formed on a pupil. The illumination optical system includes an illumination light source; a ring aperture plate for forming a ring slit image, with which a fundus of a subject's eye is illuminated, on the pupil of the eye; a conical prism disposed between the ring aperture plate and the illumination light source; and a scattering member disposed at a point substantially conjugate with the pupil.

REFERENCES:
patent: 4770523 (1988-09-01), Yamada

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Illumination optical system of an ophthalmologic instrument 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 of an ophthalmologic instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Illumination optical system of an ophthalmologic instrument will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-506707

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.