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. 26, 2008
Filed:
Nov. 18, 2005
Sang Hyuck Lee, Seoul, KR;
Ho Seop Jeong, Kyungki-do, KR;
Chon Su Kyong, Seoul, KR;
Samsung Electro-Mechanics Co., Ltd., Kyungki-Do, KR;
Abstract
An inner zoom lens system for use in a camera module having an image sensor and appropriate for an inner-focus type is provided. The inner zoom lens system includes, sequentially from an object side, a first lens group, a second lens group, a third lens group, and a fourth lens group. The first lens group is fixed and has minus refractive power. The second lens group has plus refractive power and performs a zooming operation by moving such that an interval between the first and the second lens groups is reduced when zooming from a wide angle end to a telephoto end. The third lens group has minus refractive power and moves such that a position of an image plane is corrected depending the zooming due to the movement of the second lens group. The fourth lens group has plus refractive power.