Device for measuring radius of curvature and a method thereof

Optics: measuring and testing – Lens or reflective image former testing – For optical transfer function

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

356125, G01B 900

Patent

active

050590227

ABSTRACT:
A device for measuring the radius of curvature of an optical element comprises a point light source or a pinhole, a beam splitter, an imaging optical system for forming a point image, an attaching member for a substance to be tested which is placed on an optical axis of the imaging optical system, a displacing mechanism for changing relative position on the optical axis of the point image, a light receiving element for detecting the point image, a prism for splitting the pupil by four comprising four wedge prisms having wholly different wedge directions and arranged between the light receiving element and the beam splitter, an image instrumentation section for detecting respective barycenter or center positions of four point images formed on the light receiving element and for calculating the displaced amount or the amount proportional to displacing differences of the point image from the reference image plane, and a display section for displaying the calculated result.

REFERENCES:
patent: 4609287 (1986-09-01), Kohayakawa
patent: 4637720 (1987-01-01), Shirayanagi et al.
patent: 4826315 (1989-05-01), Kohayakawa

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

Device for measuring radius of curvature and a method thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for measuring radius of curvature and a method thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for measuring radius of curvature and a method thereof will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-104932

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