Active beam catcher

Details Active beam catcher Active beam catcher

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).

REFERENCES:
patent: 3894230 (1975-07-01), Rorden et al.
patent: 4039825 (1977-08-01), Doyle
patent: 4674855 (1987-06-01), Utagawa
patent: 4693598 (1987-09-01), Sehr
patent: 4948249 (1990-08-01), Hopkins et al.
patent: 5066130 (1991-11-01), Tsukiji et al.
patent: 7030361 (2006-04-01), Douglas
patent: 0426287 (1991-05-01), None

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