General aspherical surface optical testing device

Optics: measuring and testing – Lens or reflective image former testing – For optical transfer function

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G01B 900

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active

052454029

ABSTRACT:
A general aspherical surface optical testing device comprised of a collimator lens system having lens designed to a predetermined radius of curvature that perfectly collimates a focused laser beam through an aberration compensating lens. The aberration compensating lens is designed to a predetermined radius of curvature to compensate for the aberration of an ellipse mirror, a parabola, or hyperbola mirror. A computer generated holographic general aspheric compensating plate is positioned between the collimator and the aberration compensating lens to make additional correction as needed in addition to the aberration compensations lens. For an aspheric mirror having a large numerical aperture, the hologram is order type.

REFERENCES:
patent: 4523842 (1985-06-01), Allen et al.
patent: 4818108 (1989-04-01), Eppinger
MacGovern et al. Applied Optics, vol. 10, No. 3, Mar. 1971, pp. 619-624.
"Optical Shop Testing", edited by Daniel Malacara, Published by John Wiley nd Sons, New York/Chichester/Brisbane/Toronto, pp. 455-558 and 515-516.
"Obtaining Aspherical Wave Fronts With Computer Holograms", by M. A. Golub et al. and translated in Soviet Physics-Doklady, vol. 25, No. 8, pp. 627-629, Aug. 1980.
"Phase Quantization and Discretization in Diffractive Optics", by M. A. Golub et al., 188/SPIE, vol. 1334, Current Developments in Optical Engineering IV '90.
"An Interferometer for Testing of General Aspherics Using Computer Generated Holograms", by Steven M. Arnold et al, SPIE vol. 1396 Applications of Optical Engineering: Proceedings of OE/Midwest 1990/pp. 473-480.

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