Optical member inspecting apparatus and method of inspection the

Details Optical member inspecting apparatus and method of inspection the Optical member inspecting apparatus and method of inspection the

1996-06-05

2000-11-14

Couso, Jose L.

Image analysis

Applications

Manufacturing or product inspection

382144, 382145, G06K 900

Patent

active

061480975

ABSTRACT:
An optical member inspection apparatus includes an inspection optical system having a light source, and a diffusing means for diffusing the light emitted from the light source. The diffusing means has a central portion and a peripheral portion. The diffusion transmittance of the peripheral portion is higher than the diffusion transmittance of the central portion. The inspection optical system is also provided with an image pick-up means to pick-up an image of the optical member to be inspected, and is positioned so as to receive that light emitted from the light source and transmitted through the diffusing means and the optical member. A judging means is also provided, for judging whether or not the optical member has a defect, in accordance with image signals output from the image pick-up means.

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patent: 5835207 (1998-11-01), Sugiura et al.
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