Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-09-11
2007-09-11
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C359S529000, C359S530000
Reexamination Certificate
active
11503750
ABSTRACT:
A wide angle reflector which can work in conjunction with a wide-angle sensor system for testing the wide angle reflector. In this case, reflex sensors transmit light onto a cube corner part surface, and measure the retro-reflected light. If the direction of irradiation of the light deviates too strongly from the normal to the cube corner part surface, the retro-reflective light, which serves as signal, is retro-reflected too weakly, or is not retro-reflected at all to the transmitter. This wide-angle sensor system with a cube corner part surface permits the observation of a large surface with an aperture angle of 80° and more. In addition, the wide-angle sensor system with cube corner part surface comprises a gauge for selecting the observation angle and the cube corner part surface which comprises a multiplicity of cube corners. In this case, the cube corner part surfaces, arranged around the center of the cube corner, are positioned at virtually a right angle to one another, and the axes of the cube corners deviate alternately by, for example +/−5° or more from the normal to the reflector surface.
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Collard & Roe P.C.
Luu Thanh X.
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