发明授权
- 专利标题: Electronic distance meter
- 专利标题(中): 电子距离计
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申请号: US10282126申请日: 2002-10-29
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公开(公告)号: US06747733B2公开(公告)日: 2004-06-08
- 发明人: Masami Shirai , Shinichi Suzuki , Homu Takayama , Masayuki Ueno
- 申请人: Masami Shirai , Shinichi Suzuki , Homu Takayama , Masayuki Ueno
- 优先权: JP2001-332060 20011030
- 主分类号: G01C308
- IPC分类号: G01C308
摘要:
An electronic distance meter includes a sighting telescope optical system having an objective lens for sighting an object, and an optical distance meter which includes a light-transmitting optical system for transmitting a measuring light toward the object via the objective lens, and a light-receiving optical system for receiving a portion of the measuring light which is reflected by the object. The light-transmitting optical system includes a light-shield mask having a translucent portion to define a beam profile of the measuring light. The translucent portion comprises a filter having an uneven density, light transmittance of a central portion of the filter being greater than light transmittance of a peripheral portion of the filter.
公开/授权文献
- US20030107721A1 Electronic distance meter 公开/授权日:2003-06-12