Method and apparatus for measuring the optical axis of a guide b

Details Method and apparatus for measuring the optical axis of a guide b Method and apparatus for measuring the optical axis of a guide b

1987-10-20

1989-07-18

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

244 313, G01C 100, G01B 1126

Patent

active

048489034

ABSTRACT:
The optical axis of a guide beam projector operating in accordance with the reticle field modulation method, is measured by projecting the guide beam through a retroreflector into the optical axis of a sighting instrument. When the two axes are coincident the two axes are harmonized. A non-coincidence is measured and evaluated in an electronic signal processing circuit to provide information to be used for harmonizing the two axes, for example, by a respective automatic adjustment.

REFERENCES:
patent: 3989385 (1976-11-01), Dill et al.
patent: 4014482 (1977-03-01), Esker et al.
patent: 4300736 (1981-11-01), Miles

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