Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1993-03-23
1995-10-03
Nguyen, Viet Q.
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359240, 359246, 359247, 359316, 359263, 359318, G02F 136, G02F 103, B23K 2600, G02B 2600
Patent
active
054557097
ABSTRACT:
Total internal light spatial light modulation apparatus includes a light source for projecting infrared light; a prism for reflecting the projected light from an internal surface therein; and an array of pixel posts made of electrostrictive material and positioned proximate a back face of the internal surface for selectively eliminating pixel areas of reflection of the projected light to form an image thereby. A multiplexer is provided to select a set of pixel posts to be electrically charged which corresponds with the image, and electrical contacts are formed on each pixel post no permit electrical charging of each selected pixel post. Method of fabricating the pixel post array, wherein each row of the pixel post array is formed as a monolithic structure, includes the steps of providing a slab of alternate layers of ferroelectric and electrically-conductive material; vapor-depositing electrical contacts on the slabs in electrical communication with the layers of electrically-conductive material at locations corresponding to the pixel posts to be fabricated; securing the slabs together in a front-to-back relationship with divider plates positioned therebetween; and cross-cutting a number of grooves through the slabs to define the pixel posts of each row.
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Bailey Alex E.
Caldwell Paul J.
Dula, III Thomas C.
Martin Marietta Corporation
Nguyen Viet Q.
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