Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2008-11-03
2011-10-04
Ko, Tony (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S227110, C235S041000, C382S103000
Reexamination Certificate
active
08030630
ABSTRACT:
A method and apparatus comprising an imaging system (10) with safety control for imaging target objects having a scanning arrangement (14) including a sensor assembly (22) for capturing an image from a target object. The sensor assembly (22) has a field-of-view focused by an optical arrangement (24) onto a sensor array (28). The imaging system further comprises an illumination assembly (18) having a housing (30), illumination source (38), light pipe (42), and projection lens (36). The illumination assembly (18) provides light energy toward the sensor assembly field-of-view for illuminating the target object to be imaged on the sensor array (28). The light pipe (42) comprises a multi-walled tapered body (52) having an input face (40). The walls of the body (52) create mirrored images of the illumination source (38), together with the projection lens redistribute the amount of light energy directed at the eyes of a human.
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William Cassarly, “Design of Efficient Illumination Systems,” SPIE Education Series, Aug. 11, 2008, p. 1-79, United States; (2) pages total.
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“EX25 Near/Far 2D Imager Engine,” Intermec® Product Profile, Jul. 2008, United States; (2) pages total.
Liu Rong
Tan Chinh
Wittenberg Carl
Yu Ming
Fan Nongqiang
Ko Tony
Symbol Technologies Inc.
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