Triangular interferometric light-source tracker

Details Triangular interferometric light-source tracker Triangular interferometric light-source tracker

1974-07-26

1977-01-18

Smith, Alfred E.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

356113, 356125, 250203R, G01B 902, G01D 2104

Patent

active

040036588

ABSTRACT:
A system is described for tracking the position of a light source by mounting two orthogonal triangular interferometric systems on a gimbaled platform. The interferometric systems each provide a carrier frequency signal depending upon their pointing angle with respect to the light source. These carrier signal frequencies provide the error signals for the X and Y axis drives of the platform.

REFERENCES:
hariharan "Cyclic Shearing Interferometer" Journal of Scientific Instruments, vol. 37, p. 374.
Tsuruta, "Measurement of Transfer Functions . . . Shearing Interferometer", JOSA vol. 53 No. 10 p. 1156.

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