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. 17, 1978
Filed:
Apr. 05, 1977
Applicant:
Inventors:
Richard M Altman, Woodland Hills, CA (US);
Thomas D McLaughlin, Thousand Oaks, CA (US);
Assignee:
Vivitar Corporation, Santa Monica, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G02B / ;
U.S. Cl.
CPC ...
354201 ; 350 9627 ; 354155 ;
Abstract
An optica image forming screen which comprises a multiplicity of light-transmitting elements in a matrix of light-absorbing elements so that light incident upon the elements at an angle greater than a predetermined angle will be internally absorbed by the elements, with no significant reflection internal to the elements and with element size conducive to a scattering effect by using diffraction in the image space.