Remote indicator for a laser alignment system

Details Remote indicator for a laser alignment system Remote indicator for a laser alignment system

1985-10-18

1987-03-31

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

356 4, 33294, G01B 1126, G01C 308, G01C 1506

Patent

active

046539107

ABSTRACT:
A laser alignment system includes a remote indicator to display the alignment data when the main receiver is out of sight. The remote indicator receives both operating power and alignment data through a connecting cable to the main receiver. A Liquid Crystal Display (LCD) is used in the remote indicator because of its inherently low power consumption. To make the LCD visible under conditions of reduced ambient lighting, a light source illuminates the LCD from behind. A lighting control circuit turns the light source on only when alignment data is present in order to limit battery drain on the main receiver.

REFERENCES:
patent: 3588249 (1971-06-01), Studebaker
patent: 3970391 (1976-07-01), Johnson et al.
patent: 4023908 (1977-05-01), Johnson et al.
patent: 4030832 (1977-06-01), Rando et al.
patent: 4240208 (1980-12-01), Pehrson
patent: 4488050 (1984-12-01), Iwafune

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