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:
May. 07, 2002
Filed:
Nov. 30, 2000
Lorne A. Whitehead, Vancouver, CA;
Michele Ann Mossman, Vancouver, CA;
The University of British Columbia, Vancouver, CA;
Abstract
A color image display having a spatially uniform distribution of at least two different “types” of prism structure. The first type consists of a prism, a color filter associated with one of the prism's facets and two color absorbing control members, each of which can be biased away from or into optical contact with one of the prism's other two facets. The color filter has a first spectral absorption characteristic, and the control members have second and third spectral absorption characteristics respectively. The second type of prism structure consists of a second prism, a color filter associated with one of the second prism's facets and at least one color absorbing control member which can be biased away from or into optical contact with one of the second prism's other two facets. The second prism's color filter and control member have fourth and fifth spectral absorption characteristics respectively. The spectral absorption characteristics are selected such that, for any selected set comprising proximate ones of each of the two types of prism structure, controlled movement of the members between particular selected combinations of their possible respective positions causes the set as a whole to reflect light which has an average spectral reflectance characteristic corresponding to any one of three independent colors, with no one of the independent colors being obtainable by mixing any other two of the independent colors.