Method and apparatus for measuring optical properties of optical

Details Method and apparatus for measuring optical properties of optical Method and apparatus for measuring optical properties of optical

1992-11-23

1994-10-11

Evans, F. L.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

356359, G01B 900

Patent

active

053552105

ABSTRACT:
A method and apparatus for measuring an optical property of an optical device, such as a convex or concave reflector surface, by locating a main converging lens having a focal length f.sub.1 in front of an optical measuring system capable of measuring collimation, and providing a carrier including an auxiliary converging lens for receiving a beam from the optical measuring system, and the optical device to be tested for reflecting back, via the auxiliary converging lens to the optical measuring system, the beam passed through the auxiliary converging lens from the optical measuring system. The carrier is located at a first position wherein the back focal plane of the auxiliary converging lens coincides with the front focal plane of the main converging lens, and the optical device to be tested is located on the carrier in the front focal plane of the auxiliary converging lens. The carrier is moved to a second position wherein the beam reflected back to the optical measuring system via the auxiliary converging lens and main converging lens is found by the optical measuring system to be collimated.

REFERENCES:
patent: 4090790 (1978-05-01), Dragon et al.
patent: 5059022 (1991-10-01), Ookawa

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