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:
Feb. 01, 2011
Filed:
Dec. 18, 2007
Satoshi DO, Asaka-shi, 351-0031, Saitama, JP;
Satoshi Do, Asaka-shi, 351-0031, Saitama, JP;
Other;
Milestone Co., Ltd., Tokyo, JP;
Abstract
The present invention is an imaging lens of which optical performance does not deteriorate even in a high temperature environment, various aberrations are well corrected, optical length is short, and back focus is sufficiently secured, the imaging lens comprising a first lens, an aperture stop S, a second lens, and a third lens, which are arranged in this sequence from an object side to an image side. For the first lens, a single lens is used. The second lens comprises a first sub-lens L, a second sub-lens Land a third sub-lens L, arranged in this sequence from the object side to the image side. The third lens comprises a fourth sub-lens L, a fifth sub-lens Land a sixth sub-lens L, arranged in this sequence from the object side to the image side. The first lens is formed of a transparent curable silicone resin, and the first, third, fourth and sixth sub-lenses are also formed of the transparent curable silicone resin. The second sub-lens and the fifth sub-lens are formed of a high softening temperature glass material.