Broadening the spatial frequency pass band of a thermoplastic la

Details Broadening the spatial frequency pass band of a thermoplastic la Broadening the spatial frequency pass band of a thermoplastic la

1976-01-29

1979-01-30

Silverman, Stanley S.

Gas separation: apparatus

Magnetic separating means

96 27H, 346 77E, 358 2, 428172, 428913, G03G 1600

Patent

active

041370775

ABSTRACT:
A layer of thermally deformable plastic used, for example, in a holographic recording medium has an undulated surface whereby the layer has an uneven thickness. Because of the uneven thickness, the layer has a composite spatial frequency pass band greater than the spatial frequency pass band of a layer of uniform thickness.

REFERENCES:
patent: 3406405 (1968-10-01), Somers
patent: 3560206 (1971-02-01), Uvirblis
patent: 3669673 (1972-06-01), Ih et al.
patent: 3698893 (1972-10-01), Heurtley
patent: 3764311 (1973-10-01), Bean

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