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:
May. 02, 2000
Filed:
Feb. 04, 1998
Applicant:
Inventors:
Assignee:
Mems Optical Inc., Huntsville, AL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
356121 ; 356354 ; 250201 ;
Abstract
A compact wavefront sensor includes an array of microlenses supported above a microchip. The microchip includes an array of gratings and photodetectors, which correspond to a particular microlens. Light incident on a grating will be diffracted back towards the array of microlenses, where it is focussed onto a corresponding photodetector. The photodetector receives light from gratings adjacent thereto, and detects a resulting interference therebetween. The detected interference is then used to reconstruct the wavefront. The detected interference can also be used to correct wavefronts by controlling a modulating element reflecting the wavefront.