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. 09, 2022
Filed:
Jan. 17, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Hideo Genda, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A composite optical element comprises a first base member, an optical resin layer, a bonding layer, and a second base member which are sequentially laminated such that the optical resin layer and the bonding layer are sandwiched between light entering/exiting surfaces of the first base member and the second base member. The thickness of the bonding layer changes along a straight line extending from the center toward the outer periphery of the bonding layer. Specifically, the thickness along the straight line is greater at an intermediate position between a first position and a second position than either of the thicknesses at the first position and at the second position. The first position is apart from the center by 0.8 times of half the diameter of the optical resin layer, and the second position corresponds to the outer periphery of the bonding layer.