发明名称 |
CAMERA WITH IMAGE REDUCTION RELAY SYSTEM |
摘要 |
A focal reducing lens system (5) reduces the image diameter of a conventional photographic objective lens system (2), so as to increase the relative aperture and hence the speed of the objective lens system (2). A high resolution image detector, such as a CCD sensor, may be placed at the focal plane (6) of the focal reducing lens system (5). The focal reducing lens system (5) can be based on a modified Hawkins and Linfoot system including a meniscus lens (8) and a spherical mirror (7). It may alternatively be based on Schmidt, Bouwers or Baker-Nunn lens systems.
|
申请公布号 |
WO9908154(A1) |
申请公布日期 |
1999.02.18 |
申请号 |
WO1998NZ00120 |
申请日期 |
1998.08.12 |
申请人 |
INDUSTRIAL RESEARCH LIMITED;BEACH, ALLAN, DAVID |
发明人 |
BEACH, ALLAN, DAVID |
分类号 |
G03B19/06;G02B13/00;G02B13/06;G02B17/08;G03B17/17;H04N5/232;(IPC1-7):G03B17/17;H04N5/225 |
主分类号 |
G03B19/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|