- 专利标题: Electronic distance meter
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申请号: US09849311申请日: 2001-05-07
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公开(公告)号: US06556283B2公开(公告)日: 2003-04-29
- 发明人: Masami Shirai , Shinichi Suzuki , Homu Takayama
- 申请人: Masami Shirai , Shinichi Suzuki , Homu Takayama
- 优先权: JP2000-135561 20000509
- 主分类号: G01C308
- IPC分类号: G01C308
摘要:
An electronic distance meter includes a sighting telescope having an objective lens for sighting an object; a reflection member positioned behind the objective lens; an optical distance meter which includes a light-transmitting optical system for transmitting a measuring light via the reflection member and the objective lens, and a light-receiving optical system for receiving light which is reflected by the object, subsequently passed through the objective lens and not interrupted by the reflection member; a beam-diameter varying device, provided in association with the light-transmitting optical system, for varying a beam diameter of the measuring light; and a controller which varies the beam diameter via the beam-diameter varying device in accordance with a distance from the object to the electronic distance meter.
公开/授权文献
- US20020012114A1 Electronic distance meter 公开/授权日:2002-01-31