发明名称 |
ILLUMINATION METER AND EXPOSURE SYSTEM |
摘要 |
An illumination meter (7) having a chassis (2) formed therein with a light receiving aperture (2a) and a light receiving element (3) provided with a light receiving surface (3a) disposed inside the chassis (2) and facing the light receiving aperture (2a), wherein the chassis (2) is provided with a tubular unit (light shielding unit) (8) for shielding an oblique incident light (Q) on the light receiving aperture (2a).
|
申请公布号 |
WO9939375(A1) |
申请公布日期 |
1999.08.05 |
申请号 |
WO1999JP00382 |
申请日期 |
1999.01.29 |
申请人 |
NIKON CORPORATION;TSUJI, TOSHIHIKO |
发明人 |
TSUJI, TOSHIHIKO |
分类号 |
G03F7/20;(IPC1-7):H01L21/027;G01J1/02 |
主分类号 |
G03F7/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|