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:
Jan. 25, 1994
Filed:
Oct. 19, 1992
Applicant:
Inventor:
Mark Davidson, Palo Alto, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359664 ; 359642 ; 385 35 ;
Abstract
An aplanatic microlens consisting of a sphere which is less than one millimeters in diameter. The sphere is made of a transparent material and has a plane surface ground into it so that the radial distance from the center of the sphere to the nearest point on the plane surface is equal to the radius of the sphere divided by the ratio of the index of refraction of the transparent material and the index of refraction of the medium which will surround the lens in use.