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US 4,636,846 AGranted
Optical scanning apparatus for indicia imprinted about a cylindrical axis
AssigneeThe United States of America as represented by the United States Department of Energy
InventorRichard A. Villarreal
Life of this patent
Estimating the term…
Abstract
An optical scanner employed in a radioactive environment for reading indicia imprinted about a cylindrical surface of an article by means of an optical system including metallic reflective and mirror surfaces resistant to degradation and discoloration otherwise imparted to glass surfaces exposed to radiation.
Claims11
An apparatus for optically scanning indicia imprinted about a cylindrical surface of an article comprising:
- a frame, a camera mounted on said frame, a light source for emitting a collimated light beam, a beam splitter mounted on said frame, means mounted on said frame for diffusing a portion of said light beam and reflecting a portion thereof onto said beam splitter, said beam splitter directing said light beam onto said cylindrical surface of said article for illuminating the indicia imprinted thereon, and means including a metallic mirror surface for reflecting an image from said imprinted cylindrical surface for transmission through said beam splitter to said camera.
An apparatus for optically scanning indicia imprinted about a cylindrical surface of an article comprising:
- a frame, a camera mounted on said frame, a light source for emitting a collimated light beam, a beam splitter mounted on said frame, means mounted on said frame for diffusing a portion of said light beam and reflecting a portion thereof onto said beam splitter, said beam splitter transmitting said light beam onto said cylindrical surface of said article for illuminating the indicia imprinted thereon, and means including a metallic mirror surface for reflecting an image from said imprinted cylindrical surface onto said beam splitter for reflection to said camera.
Dependencies are inferred from the claim text.