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:
Jan. 23, 2007
Filed:
Nov. 08, 2004
Masashi Isono, Toyokawa, JP;
Masashi Isono, Toyokawa, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
A taking lens system has two lens elements, namely, from the object side, a positive lens element and a meniscus lens element convex to the image side, wherein the focal length of the entire taking lens system and the axial thickness from the object-side surface of the positive lens element to the image-side surface of the meniscus lens element fulfill a prescribed relation. Alternatively, a taking lens system has two lens elements, namely, from the object side, a first lens element having a meniscus shape with a convex surface on the object side and having a positive optical power and a second lens element having a meniscus shape with a concave surface on the image side, wherein the focal lengths of the first and second lens elements fulfill a prescribed relation. Alternatively, a taking lens system has three lens elements, namely, from the object side, a first lens element having a weak optical power, an aperture stop, a second lens element having a positive optical power, and a third lens element having a concave surface on the image side and having a negative optical power, wherein the focal length of the entire taking lens system and the focal lengths of the first and third lens elements fulfill prescribed relations.