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:
Oct. 23, 2012
Filed:
Apr. 28, 2011
Koji Miyasaka, Koriyama, JP;
Takuji Nomura, Koriyama, JP;
Koichi Murata, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
The present invention relates to an aberration correcting device comprising: an aberration correcting element which modulates the phase of incident light; and a position adjusting section which can move the aberration correcting element in a direction perpendicular to an optical axis of the incident light, wherein the aberration correcting element includes first and second aberration correction plates, each of which is disposed such that the phase of transmitted light beam differs with transmission position of the incident light beam with the same phase, and the aberration correcting element has a reference arrangement which is an arrangement of the first and second aberration correction plates in which the light beams transmitted through the aberration correcting element have the same phase, and assuming that a point on the first aberration correction plate crossing the optical axis is a point Oand a point on the second aberration correction plate crossing the optical axis is a point Oin the reference arrangement, the position adjusting section includes a mechanism which can move the first and second aberration correction plates in a direction perpendicular to the optical axis and the points Oand Oin opposite directions from the reference arrangement and/or a mechanism which can rotate and move the first and second aberration correction plates by the same angle in different directions from the reference arrangement with the points Oand Oas the center.