Optics: measuring and testing – Lamp beam direction or pattern
Reexamination Certificate
2005-12-07
2009-02-17
Toatley, Jr., Gregory J (Department: 2877)
Optics: measuring and testing
Lamp beam direction or pattern
C250S2140RC
Reexamination Certificate
active
07492446
ABSTRACT:
A beam catcher (3) for a light beam (1) includes a photodetector (6) having a plurality of photodiodes (8) which are offset along a line in a defined manner with respect to a reference point (7), an evaluating unit (11) having a parameter set (P) of at least one associated line laser transmitter (2) for emitting the light beam, a quantity determining module (13) for determining an energy quantity associated with the detected light energy E of the light beam (1), and an error estimating module (14) for estimating an error estimate value (F) depending upon the energy quantity, and an offset display (9) for displaying the offset of the light bean (1) with respect to the reference point (7).
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patent: 0426287 (1991-05-01), None
Abelman ,Frayne & Schwab
Hilti Aktiengesellschaft
Toatley Jr. Gregory J
Valentin Juan D
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