Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate
2001-07-06
2008-12-02
Alsomiri, Isam (Department: 3662)
Optics: measuring and testing
Range or remote distance finding
With photodetection
C356S028000
Reexamination Certificate
active
07460215
ABSTRACT:
The invention relates to a method for measuring a distance-related variable such as distance, speed or acceleration, or for levelling. An emitting device (1-6) comprising at least one microlaser (3) is used as an emitter, and the beam reflected off an object surface is received and evaluated for measurement. A beam is emitted and evaluated after being received, in a substantially simultaneous manner in at least two different wavelengths. Preferably, said method is carried out by means of a device whereby the microlaser (3) in the form of a passively pulsating microlaser (3) emits at least two different wavelengths. A receiver (15, 40) for the laser beam reflected off an object is arranged downstream from the evaluating device (41).
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Patent Abstracts of Japan, Pub. No. 03276004, Jun. 12, 1991, Tomoyuki.
Alsomiri Isam
Leica Geosystems A.G.
Van Dyke Gardner, Linn & Burkhart, LLP
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