Optical object discriminating device

Details Optical object discriminating device Optical object discriminating device

2008-03-25

2008-03-25

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

By polarized light examination

Of surface reflection

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.

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