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:
Nov. 09, 1993
Filed:
Jan. 24, 1992
William T Maloney, Sudbury, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
An electrooptic assembly for a light modulator, suitable for use in a printer, is constructed as a sequence of film-type layers of electrooptic material, particularly PLZT, supported upon a transparent substrate and having comb-electrode structures disposed as electrode layers at all of the interfaces between the layers of electrooptic material. The electrooptic layers and the electrode layers are readily fabricated by photolithography. A polarizer and an analyzer with crossed polarization axes are disposed on opposite sides of the electrooptic assembly along an optical path to provide, with the electrooptic assembly, an electrooptic modulator. Light passes via the optical path through the modulator upon energization of electrodes with an electric field transverse to a common direction of the electrodes. For use of the light modulator in a printer, a print-medium transport is provided to impart relative motion between the print medium and the optical path, the motion being in a direction perpendicular to a longitudinal dimension of comb electrode structures in the various electrode layers.