Optics: measuring and testing – Position or displacement
Reexamination Certificate
2006-05-02
2006-05-02
Lee, Hwa (Andrew) (Department: 2877)
Optics: measuring and testing
Position or displacement
C356S609000, C356S624000, C250S227110, C250S201100, C250S251000
Reexamination Certificate
active
07038793
ABSTRACT:
A sensor device is for performing rapid optical measurement of distances according to the confocal optical imaging principle in order to determine distance values and/or height values of a surface. The sensor device includes a point-shaped light-emitting element that is arranged on an optical axis, a reflector, which is arranged perpendicular to the optical axis and which can be displaced along the optical axis, imaging optics centered with regard to the optical axis, and a point-shaped light-receiving element that is situated at the same location as the light-emitting element. The components of the sensor device are arranged in such a manner that: light emitted by the light-emitting element is reflected by the reflector; while the reflector is displaced, the imaging optics focus the light reflected by the reflector at least once onto the surface to be measured; the focussed light is at least partially backscattered by the surface to the measured, and; while the reflector is displaced, the imaging optics focus, via the reflector, the backscattered light at least once onto the light-receiving element.
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Harness & Dickey & Pierce P.L.C.
Lee Hwa (Andrew)
Nguyen Sang H.
Siemens Aktiengesellschaft
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