Optical displacement-measuring instrument

Details Optical displacement-measuring instrument Optical displacement-measuring instrument

2007-10-30

2007-10-30

Fureman, Jared J. (Department: 2876)

Optics: measuring and testing

Position or displacement

Position transverse to viewing axis

C356S614000, C356S617000, C356S618000, C356S619000, C033S706000, C033S707000, C250S23700G

Reexamination Certificate

active

11067907

ABSTRACT:
An optical displacement-measuring instrument of a reflection type includes a sensor head movable above a scale in a direction of measurement. This instrument is of a three-grating type that comprises a first optical grating arranged close to a light source, a second optical grating arranged on the scale, and a third optical grating arranged in a photoreceptor. A light diffuser is arranged between the light source and the first optical grating. A collimated light from the light source is diffused at the light diffuser and led to the first optical grating.

REFERENCES:
patent: 4518859 (1985-05-01), Hoshika
patent: 4661698 (1987-04-01), Cappio et al.
patent: 5841133 (1998-11-01), Omi
patent: 6410911 (2002-06-01), Omi
patent: 6526190 (2003-02-01), Holzapfel et al.
patent: A 05-087594 (1993-04-01), None
patent: A 2003-279383 (2003-10-01), None

Affiliated with

Also associated with

Rating

Optical displacement-measuring 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 Optical displacement-measuring instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical displacement-measuring instrument will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3902953