Concave-convex surface inspection apparatus

Details Concave-convex surface inspection apparatus Concave-convex surface inspection apparatus

2009-03-09

2011-11-01

Alsomiri, Isam (Department: 3665)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S239700

Reexamination Certificate

active

08049868

ABSTRACT:
A concave-convex surface inspection apparatus includes a slit light source unit emitting a slit light to a concave-convex surface of an object to be inspected, an image-taking unit taking an image of the concave-convex surface illuminated by the emitted slit light with an imaging optical axis intersecting with an optical axis of the slit light with a narrow-angle equal to or narrower than 30 degrees, and an evaluation section obtaining a three dimensional shape of the concave-convex surface and evaluating the obtained three dimensional shape, wherein the slit light source unit includes a slit light source and a cylindrical lens, the image-taking unit includes a telecentric lens unit, an image-taking section having an imaging surface tilted relative to the imaging optical axis for increasing a focusing range of the concave-convex surface, and a P polarizer.

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