The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 1995
Filed:
Mar. 23, 1993
Thomas C Dula, III, Winter Springs, FL (US);
Paul J Caldwell, Baltimore, MD (US);
Alex E Bailey, Hampstead, MD (US);
Martin Marietta Corporation, Bethesda, MD (US);
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.