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:
Aug. 14, 1990
Filed:
Feb. 02, 1989
Applicant:
Inventor:
Thomy H Nilsson, Charlottetown, CA;
Assignee:
Canadian Patents and Development Ltd., Ottawa, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G03B / ;
U.S. Cl.
CPC ...
35016211 ; 354354 ;
Abstract
An image forming technique using a small, flat mirror is disclosed. A real, inverted image of an object is formed with infinite depth of field when the diameter of this mirror is between 0.15 and 0.4 millimeters. In smaller diameters, this forms a diffraction pattern image of an object. The optimal diameters depend on wavelength of the light and the distances involved.