IMAGING APPARATUS EQUIPPED WITH VARIABLE FOCAL LENGTH CONSTANT MAGNIFICATION LENS ASSEMBLY, AND IMAGING METHOD USING THIS IMAGING APPARATUS,申请号JP20070077401-传众专利搜索

IMAGING APPARATUS EQUIPPED WITH VARIABLE FOCAL LENGTH CONSTANT MAGNIFICATION LENS ASSEMBLY, AND IMAGING METHOD USING THIS IMAGING APPARATUS

申请公布号：JP2007256956(A)

申请号：JP20070077401

申请日期：2007.03.23

申请公布日期：2007.10.04

申请人：

MITSUTOYO CORP

发明人：FELDMAN MARK

分类号：G02B7/28;G03B17/17;H04N5/225

主分类号：G02B7/28

摘要：PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of maintaining an image in a focused state while keeping a constant magnification even when a distance from an imaging object is changed. SOLUTION: The imaging apparatus includes a first optical element 110 having a first focal length, and a second optical element 120 having a variable focal length. The second optical element 120 can be located at a fixed first distance S<SB>12</SB>of approximately the first focal length away from the first optical element 110. Thus, such an imaging apparatus can permit an optical system to focus on an object at various distances and at a constant magnification with no moving parts. COPYRIGHT: (C)2008,JPO&INPIT