Autocollimation method and apparatus

Details Autocollimation method and apparatus Autocollimation method and apparatus

1983-12-15

1987-03-31

Rosenberger, R. A.

Optics: measuring and testing

Angle measuring or angular axial alignment

Alignment of axes nominally coaxial

356138, G01B 1126

Patent

active

046539115

ABSTRACT:
An autocollimation method and apparatus are disclosed wherein a primary image of the reticle and a secondary image of the primary image which has been telescopically directed to and reflected from a remote reflecting surface are superimposed on a video display. The primary image of the reticle is produced along a first optical path and the secondary image of the reticle along second optical path including Cassegrainian focusing telescopic optical elements. The optical paths are provided with a commonly shared portion for alternatively positioning means of different optical magnification. Alternative magnification are provided for producing first and second images on the video display for first coarse and then fine determinations and/or adjustments.

REFERENCES:
patent: 3531205 (1970-09-01), Nussmeier
patent: 3721488 (1973-03-01), Kuhne
patent: 3752587 (1973-08-01), Myers et al.
patent: 4530602 (1985-07-01), Pomphrey

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