Surface flaw inspection apparatus for a convex body

Details Surface flaw inspection apparatus for a convex body Surface flaw inspection apparatus for a convex body

1983-06-06

1985-11-26

Beck, Shrive P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356445, G01N 2188

Patent

active

045556350

ABSTRACT:
A surface flaw inspection apparatus for a convex body having a light source for irradiating a surface of an object to be inspected with a luminous flux, an image sensor for receiving the reflected light on the surface of the object and producing a corresponding electrical signal, an inspection section for receiving the electrical signal from the image sensor and inspecting whether or not there is a flaw on the surface of the object, and a projection screen located in the light path from the light source through the surface of the object to the image sensor on which an image of the irradiated area of the surface of the object by the luminous flux is formed, in which the image sensor picks up the image formed on the projection screen.

REFERENCES:
patent: 3746784 (1983-07-01), Van Oosterhout
patent: 4291990 (1981-09-01), Takasu
patent: 4403858 (1983-09-01), Yoshida
"Detecting Surface Deformities", IBM Technical Disclosure Bulletin, vol. 14, No. 1, Jun. 1971.

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