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:
Jun. 17, 2008
Filed:
Nov. 03, 2006
Ryo Abe, Nara, JP;
Minoru Ueda, Nara, JP;
Ryo Abe, Nara, JP;
Minoru Ueda, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
First, second, third and fourth lens groups of a zoom lens portion are arranged on an optical axis in order from an object to be imaged side toward an electronic imaging device. The first lens group has a negative refracting power and a fixed position on the optical axis. The second lens group has a positive refracting power and is moved along the optical axis to effect focusing. The third lens group has a positive refracting power and is moved along the optical axis during a magnification change. The fourth lens group has a fixed position on the optical axis. An angle of incidence of a ray of a maximum image height when the zoom lens portion is in a state at a telephoto end is not greater than the angle of incidence of the ray of the maximum image height incident on the electronic imaging device when the zoom lens portion is in a state at a wide angle end. The angle of incidence of the ray of the maximum image height incident on the electronic imaging device when the zoom lens portion is in the state at the telephoto end is not smaller than 5°.