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:
Aug. 06, 2013
Filed:
Apr. 05, 2010
Masayuki Kimura, Osaka, JP;
Yasushi Yagi, Hyogo, JP;
Masayuki Kimura, Osaka, JP;
Yasushi Yagi, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An optical system includes: a main mirror () having a shape of a portion of a convex paraboloid which includes an opening in a center and is rotationally symmetric; a second-reflection mirror () which further reflects light reflected by the main mirror (), and has a shape of a portion of a concave paraboloid which is rotationally symmetric; at least one lens which forms an image of the light reflected by the second-reflection mirror (); and a lens barrel () holding the at least one lens, and a position of a front principal point of the at least one lens coincides with a focal position of the second-reflection mirror (), and an optical axis of the at least one lens is tilted with respect to a rotational axis of each of the convex paraboloid and the concave paraboloid.