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. 10, 2011
Filed:
Sep. 15, 2005
Applicants:
Masaki Shiozawa, Sagamihara, JP;
Tatsushi Nomura, Sagamihara, JP;
Inventors:
Masaki Shiozawa, Sagamihara, JP;
Tatsushi Nomura, Sagamihara, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/228 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical low pass filter includes: a light transmitting member (); and a refractive index distribution generation means () that generates a refractive index distribution cyclically changing within the plane of the light transmitting member (). The refractive index distribution generation means includes a piezoelectric element, for example, and generates the refractive index distribution by generating the compressional wave in the light transmitting member () with a high frequency voltage being applied to the piezoelectric element.