Optical object discriminating device

Optics: measuring and testing – By polarized light examination – Of surface reflection

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C356S445000, C356S432000, C356S364000

Reexamination Certificate

active

07349091

ABSTRACT:
The optical object discriminating device includes a light projecting part which applies light, which is emitted from a semiconductor light emitting element, to a measuring object which is an object to be measured, and a light receiving part which receives reflected light reflected by the measuring object. Between the light receiving part and the measuring object is placed a polarization-state selector part which permits polarized light of a specified polarization direction to pass therethrough. A signal processing part processes a signal outputted by the light receiving part, and measures intensity of light of the polarization direction permitted by the polarization-state selector part to pass therethrough.

REFERENCES:
patent: 5307273 (1994-04-01), Oh et al.
patent: 5617500 (1997-04-01), Shionoya et al.
patent: 5757474 (1998-05-01), Sopori et al.
patent: 6201601 (2001-03-01), Vaez-Iravani et al.
patent: 1389720 (2003-01-01), None
patent: 2597969 (2004-01-01), None
patent: 1487264 (2004-04-01), None
patent: 1-232255 (1989-09-01), None
patent: 2-052619 (1990-02-01), None
patent: 2-052623 (1990-02-01), None
patent: 3-077519 (1991-04-01), None
patent: 3-106325 (1991-05-01), None
patent: 3-123522 (1991-05-01), None
patent: 3-212249 (1991-09-01), None
patent: 3-228724 (1991-10-01), None
patent: 5-056888 (1993-03-01), None
patent: 5-056889 (1993-03-01), None
patent: 6-078862 (1994-03-01), None
patent: 7-311312 (1995-11-01), None

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

Optical object discriminating device 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 object discriminating device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical object discriminating device will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2789974

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