Surface inspection systems

Details Surface inspection systems Surface inspection systems

1977-05-24

1979-02-13

Sacher, Paul A.

Optics: measuring and testing

Of light reflection

With diffusion

250571, 356431, G01N 2130

Patent

active

041393074

ABSTRACT:
A surface inspection system has a light beam repetitively scanning a surface and a receiver located to receive light specularly (directly) reflected. The receiver has an enclosure with a wall containing a plurality of slits by which reflected light can reach a detector in the enclosure. The slits are arranged to cause the detector to produce a series of pulses throughout the scan, each pulse providing an instantaneous picture of the surface gloss in terms of an intensity distribution, the half width of each pulse is measured to give an indication of any variation from the half width of the distribution for a known surface gloss.

REFERENCES:
patent: 3922093 (1975-11-01), Dandliker et al.
patent: 3984189 (1976-10-01), Seki et al.

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