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:
Apr. 17, 2007
Filed:
Dec. 22, 2003
Jin LI, Boise, ID (US);
Jiutao LI, Boise, ID (US);
Ulrich Boettiger, Boise, ID (US);
Loriston Ford, Nampa, ID (US);
Jin Li, Boise, ID (US);
Jiutao Li, Boise, ID (US);
Ulrich Boettiger, Boise, ID (US);
Loriston Ford, Nampa, ID (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
A microlens structure includes lower lens layers on a substrate. A sputtered layer of glass, such as silicon oxide, is applied over the lower lens layers at an angle away from normal to form upper lens layers that increase the effective focal length of the microlens structure. The upper lens layers can be deposited in an aspherical shape with radii of curvature longer than the lower lens layers. As a result, small microlenses can be provided with longer focal lengths. The microlenses are arranged in arrays for use in imaging devices.