Laser velocimeter employing reference beam detection专利检索-运动探测器传感器与探测器专利检索查询-专利查询网

Laser velocimeter employing reference beam detection

阅读：598发布：2023-07-15

专利汇可以提供Laser velocimeter employing reference beam detection专利检索，专利查询，专利分析的服务。并且A doppler shift laser velocimeter is disclosed that employs a self-aligning optical system capable of determining one or more velocity components of a moving substance. The beam from a plane polarized laser source is automatically split into two or more plane polarized parallel beams by one or more parallel surface glass blocks. These beams are then directed onto a focusing element which automatically focuses them to a common point P in space. One or more velocity components of a moving substance are detected by placing photodetectors in the paths of one or more of the beams after they have traversed through or reflected from the moving substance near the common point P. Means are connected to the outputs of the photodetectors for determining the frequencies of the electrical signals. These frequencies are proportional to the specific velocity components of the moving substance.，下面是Laser velocimeter employing reference beam detection专利的具体信息内容。

权利要求

1. A laser doppler shift two velocity component measuring system comprising means for providing a plane polarized collimated input light beam, means for splitting said input light beam into first and second plane polarized parallel light beams, means for limiting the intensity of said first plane polarized light beam, means for splitting said intensity limited light beam into first and second plane polarized parallel reference light beams, said reference light beam being parallel to and in orthogonal relationship with said second plane polarized light beam, means for limiting the intensity of said first and second reference light beam, means for causing said first and second intensity limited reference beams and said second plane polarized light beam to converge and focus at a common point, a first photodetector means positioned proximate to and beyond said common point and oriented to receive said first reference beam, and a second photodetector means positioned proximate to and beyond said common point and oriented to receive said second reference beam.

2. A laser doppler shift two velocity component measuring system as defined in claim 1 including a positive lens positioned between said common point and each said photodetector means.

3. A laser doppler shift two velocity component measuring system as defined in claim 2 wherein said means for splitting said input light beam into first and second plane polarized parallel light beams and said means for splitting said intensity limited light beam into first and second plane polarized parallel reference light beams comprise parallel surface glass blocks having spatial relationships and orientation adapted to generate at least three parallel output beams having an output beam pattern that forms a right triangle.

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