发明名称 |
A variable magnification finder |
摘要 |
<p>The present invention relates to a variable magnification finder comprising an objective lens group having a positive refractive power for enabling a wide angle view of an object. The objective lens group includes a first lens sub-group having either a negative or a positive refractive power; a second lens sub-group having a negative refractive power; a third lens sub-group having a positive refractive power and having a cemented lens with at least two pieces; and a fourth lens sub-group having a positive refractive power. The third lens sub-group is movable for magnifying the image, and the second lens sub-group is movable for compensating the focus of the magnified image. The finder further comprises an eyepiece lens group having a positive refractive power for viewing the image.</p> |
申请公布号 |
GB9611182(D0) |
申请公布日期 |
1996.07.31 |
申请号 |
GB19960011182 |
申请日期 |
1996.05.29 |
申请人 |
SAMSUNG AEROSPACE INDUSTRIES LTD |
发明人 |
|
分类号 |
G03B13/00;G02B5/04;G02B15/16;G02B15/173;G02B15/177;G02B23/14;G02B25/00;G03B13/12 |
主分类号 |
G03B13/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|