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:
Apr. 24, 1979
Filed:
Sep. 07, 1977
Takahiro Sugiyama, Tokyo, JP;
Asahi Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A miniature and large aperture wide-angle lens is composed of ten or eleven lenses grouped in nine lens components. In order from the object to the image side, the first lens component is a positive lens, and the second, third and fourth lens components are each negative meniscus lenses. The fifth lens components is a thick positive lens. The sixth lens component is a positive lens, and a diaphragm is disposed between the fifth and sixth lens components. The seventh lens component is a negative lens. The eighth lens component comprises a negative lens and a positive lens cemented together to form a positive lens. The ninth lens component comprises either one positive lens or two positive lenses.