Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1989-03-03
1992-05-26
Miller, Stanley D.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
353122, 359 45, 359 49, G02F 113
Patent
active
051161109
ABSTRACT:
An optical system having a projection lens for imaging a scattering type thermo optic cell on an image receiving surface, comprising optical source apparatus for generating an optical beam and an image created on the scattering type thermo optic cell having a minimum feature size, the optical beam propagating through the object on the scattering type thermo optic cell. Also provided is a condenser system which illuminates the scattering cell and underfills the aperture of the projection lens, thereby creating a partially coherent imaging system. As a result, a relatively higher contrast ratio for the minimum features of the image is obtained at the image receiving surface.
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Greyhawk Systems, Inc.
Mai Huy K.
Miller Stanley D.
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