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:
Jul. 17, 2007
Filed:
Apr. 25, 2005
Haruhiko Yamanouchi, Yokohama, JP;
Haruhiko Yamanouchi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical device includes a first optical element including an incidence plane on which light from an object is incident, the incidence plane being in contact with the surrounding environment; a main body having an inside and housing the first optical element such that the incidence plane and the inside of the main body are hermetically sealed; a second optical element provided in the main body, the second optical element receiving light from the first optical element; and an absorbent member provided in the main body. In the optical device, the absorbent member has a moisture absorptive capacity corresponding to at least an amount of water retention inside the main body.