发明名称 |
A variable magnification finder |
摘要 |
<p>A variable magnification finder has an objective lens group having an overall positive power. A first lens group and a second lens group each have a negative refractive power; a third lens group and a fourth lens group each have a positive refractive power; and an eyepiece lens group has a positive power. The second and third lens groups move to zooming from the wide angle position to the telephoto position, and compensate the change of an aberration resulting from such movement of the second and third lens groups.</p> |
申请公布号 |
GB9514694(D0) |
申请公布日期 |
1995.09.13 |
申请号 |
GB19950014694 |
申请日期 |
1995.07.18 |
申请人 |
SAMSUNG AEROSPACE INDUSTRIES LTD |
发明人 |
|
分类号 |
G03B13/10;G02B13/18;G02B15/16;G02B15/177;G02B23/14;G02B25/00;G03B13/00;G03B13/12 |
主分类号 |
G03B13/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|