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:
Mar. 05, 2013
Filed:
Feb. 11, 2011
Wei Jia, Beijing, CN;
Yefeng Zhou, Beijing, CN;
Wei Jia, Beijing, CN;
Yefeng Zhou, Beijing, CN;
Typonteq Company, Beijing, CN;
Abstract
A device for acquiring equally blurred intermediate image to realize Extension of DOF imaging is characterized in that: the lens of said device produces space-invariant and approximately equal psf output in the designed range of the depth-of-field; the lens realizing space-invariant transfer characteristic is a multi-focal points lens with ray compensation; the angle of the ray guided by the multi-focal point changes in response to the object distance, but the corresponding position and energy distribution of the light spot on the image surface remain constant substantially.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile