Holographic objective mirror for optical storage

Details Holographic objective mirror for optical storage Holographic objective mirror for optical storage

1987-03-13

1988-11-15

Corbin, John K.

350 37, G02B 532

Patent

active

047844477

ABSTRACT:
A holographic mirror is used in an optical storage head to diffract a laser beam perpendicularly to the optical medium and also to focus the beam onto the optical medium. The mirror can also function to cause circularization of a collimated laser beam of elliptical cross-section.

REFERENCES:
patent: 4004081 (1977-01-01), Zorn
patent: 4203652 (1980-05-01), Hanada
R. A. Chipman, "Monochromator Designs with Aberration Corrected Gratings,", SPIE vol. 237, 1980 Int'l Lens Design Conf. (OSA), pp. 439-445.
Sincerbox, G., "Formation of Optical Elements by Holography," IBM Tech. Disc. Bull., vol. 10, No. 3, Aug. 1967, pp. 267-268.

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