Image collection and object illumination

Details Image collection and object illumination Image collection and object illumination

1984-01-30

1985-08-20

Lechert, Jr., Stephen J.

Illumination

Revolving

362267, 362308, 362310, 362328, 362331, 362335, 362347, F21V 704

Patent

active

045368279

ABSTRACT:
A probe for inspecting the inner surface of a tube is disclosed. The probe (10) utilizes a group of large diameter optical fibers (12) as a light source and an annular ring (14) of smaller diameter optical fibers as interceptors of the reflected light. A pair of plano-convex lenses (16) focuses the light beam emanating from the group of large diameter optical fibers (12) onto a reflective ball bearing (18) or a concave cone (32) causing a circumferential band (44) to be illuminated on the inner surface of the tube. Light from the band (44) is intercepted by the optical fibers within the annular ring (14) and is transmitted therethrough. The transfer of light from the band (44) to the annular ring (14) is optimized by beveling the end of the optical fibers within the annular ring (14).

REFERENCES:
patent: 4420796 (1983-12-01), Mori

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