发明授权
- 专利标题: Optical distance measuring device and method for optical distance measurement
- 专利标题(中): 光学距离测量装置及光学距离测量方法
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申请号: US12937948申请日: 2009-04-07
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公开(公告)号: US09395440B2公开(公告)日: 2016-07-19
- 发明人: Olaf Schrey , Werner Brockherde , Bedrich Hosticka , Wiebke Ulfig
- 申请人: Olaf Schrey , Werner Brockherde , Bedrich Hosticka , Wiebke Ulfig
- 申请人地址: DE Wolfsburg
- 专利权人: Volkswagen Aktiengesellschaft
- 当前专利权人: Volkswagen Aktiengesellschaft
- 当前专利权人地址: DE Wolfsburg
- 代理机构: Perkins Coie LLP
- 代理商 Michael A. Glenn
- 优先权: DE102008018718 20080414
- 国际申请: PCT/EP2009/002570 WO 20090407
- 国际公布: WO2009/127347 WO 20091022
- 主分类号: G01C3/08
- IPC分类号: G01C3/08 ; H01J40/14 ; G01S17/10 ; G01S7/487 ; G01S17/89
摘要:
The present invention describes an optical distance measuring device having a pulsed radiation source that is implemented to transmit, in a temporally contiguous radiation pulse period, a radiation pulse having a pulse duration tp that is shorter than the radiation pulse period, and to transmit no radiation pulse in a temporally contiguous dark period. Further, the optical distance measuring device includes a detector for detecting different amounts of radiation in two overlapping detection periods during the radiation pulse period to capture reflections of the radiation pulse at an object surface and a background radiation and/or in two overlapping detection periods during the dark period to capture background radiation. The optical distance measuring device further includes an evaluator determining a signal depending on a distance of the optical distance measuring device to an object based on the detected amount of radiation. Further, the present invention provides a method for optical distance measurement and for multiple sampling.
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