Apparatus for aligning a reference reflector with a focal point

Details Apparatus for aligning a reference reflector with a focal point Apparatus for aligning a reference reflector with a focal point

1996-04-25

1997-09-09

Font, Frank G.

Optics: measuring and testing

By polarized light examination

With birefringent element

356345, G01B 902

Patent

active

056661983

ABSTRACT:
A video camera (28) is provided including an image receiving surface (30). A monitor (36) is operably coupled to the video camera (28) to display an image (34) received at the image receiving surface (30). A reference reflector (24) is secured to the alignment camera (28) such that a reference portion (40) of the image receiving surface (30) is located at the optical center of curvature (32) of the reference reflector (24). An alignment mark (44) is coordinately positioned with the reference portion (40) on the monitor (36). The video camera (28) and the reference reflector (24) are movable as a unit to position the optical center of curvature (32) of the reference reflector (24) coincident with the focal point 22 of an element or optical system to be tested (18).

REFERENCES:
patent: 4201473 (1980-05-01), Domenicali et al.

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