Optics: measuring and testing – Angle measuring or angular axial alignment
Patent
1997-09-09
2000-07-18
Font, Frank G.
Optics: measuring and testing
Angle measuring or angular axial alignment
356147, G01B 1126, G01C 100
Patent
active
060914874
ABSTRACT:
A laser transmitter and a method of transmitting a reference laser beam are provided comprising an auto scan dither mode. According to one aspect of the present invention, a laser transmitter is provided comprising a laser detection module, an optical system, and a controller. The laser detection module is operative to produce a reflected laser beam signal. The optical system is arranged to generate a reference laser beam selectively in one of a search mode and a target dither mode and to direct a reflected laser beam to the laser detection module. The optical system defines a rotational axis and the reference beam projects radially from the rotational axis. The search mode is characterized by movement of the reference beam through a rotational arc defined about the rotational axis and the target dither mode is characterized by movement of the reference beam through a dither zone occupying a portion of the rotational arc. The controller is programmed to produce selectively one of a target-sighted signal and a target-missing signal and produce a rotary position signal indicative of the position of the reference beam relative to the rotational arc. The controller is also programmed to identify a target position based upon the reflected laser beam signal and the rotary position signal and establish the dither zone about the target position. The dither zone is characterized by a dither range and the dither range is changed gradually in response to the target-sighted signal. The dither range is maintained substantially constant in response to the target-missing signal.
REFERENCES:
patent: 3823313 (1974-07-01), Unema
patent: 3936197 (1976-02-01), Aldrink et al.
patent: 4062634 (1977-12-01), Rando et al.
patent: 4221483 (1980-09-01), Rando
patent: 4662707 (1987-05-01), Teach et al.
patent: 4676634 (1987-06-01), Petersen
patent: 4830489 (1989-05-01), Cain et al.
patent: 4895440 (1990-01-01), Cain et al.
patent: 5042042 (1991-08-01), Hori et al.
patent: 5144486 (1992-09-01), Hart
patent: 5148441 (1992-09-01), Itai
patent: 5182756 (1993-01-01), Waki et al.
patent: 5196693 (1993-03-01), Osaragi
patent: 5208452 (1993-05-01), Osaragi
patent: 5257279 (1993-10-01), Dugan et al.
patent: 5375663 (1994-12-01), Teach
patent: 5453833 (1995-09-01), Kawashima et al.
patent: 5511085 (1996-04-01), Marshall
patent: 5513001 (1996-04-01), Ohtomo et al.
patent: 5517023 (1996-05-01), Ohtomo et al.
patent: 5535003 (1996-07-01), Kawashima et al.
patent: 5583685 (1996-12-01), Ohtomo et al.
patent: 5808771 (1998-09-01), Ohtomo et al.
"Smart" Rotating Lasers, RL-S1A/S1B 1996 TOPCON Laser Systems, Inc., (4 pages).
Marksman RL-50 Series Rotating Lasers, 1994 TOPCON Laser Systems, Inc. (6 pages).
"MinuteMarker General Construction/Interior Laser System Model 1462" Brochure, Published Oct. 26, 1996.
Green Francisco Roberto
Jackson Jonathan A.
Font Frank G.
Spectra Precision, Inc.
Stafira Michael P.
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