Holographic exposure prism

Details Holographic exposure prism Holographic exposure prism

1994-08-31

1996-09-10

Dzierzynski, Paul M.

Optical: systems and elements

Holographic system or element

Copying by holographic means

359 15, 359 22, 359 30, G03H 120, G03H 126, G03H 100, G02B 532

Patent

active

055551084

ABSTRACT:
A hologram exposure system that includes a holographic recording medium, a holographic prism adjacent the holographic recording medium for most efficiently diffracting light of a predetermined wavelength and at a predetermined incidence angle, a first monochromatic beam directed toward the holographic prism at the predetermined incidence angle, and a second monochromatic beam directed toward the holographic prism at an incidence angle that allows the second monochromatic beam to be transmitted by the holographic prism without any diffraction. The holographic prism diffracts the first monochromatic beam and transmits the second monochromatic beam without any diffraction to produce a diffracted first construction beam and a non-diffracted second construction beam which interfere in the holographic recording medium to form holographic fringes therein. The exposure system further includes a holographic zero order filter interposed between the holographic prism and the holographic recording material for diffracting away from the holographic recording medium a portion of the first monochromatic beam that is not diffracted by the holographic prism.

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patent: 5322747 (1994-06-01), Hugle

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