Ii-vi Suwtech, Inc.

Zhejiang Huahai Pharmaceutical Co., Ltd.

Hesai Technology Co., Ltd.

Shanghai Syncores Technologies Inc. Ltd.

Jintao Yang

Dashan Li

Xiaobin Sun

Shaoqing Xiang

Yang Liu

Luning Huang

Hong Gu

Anping Tao

Xiaowen Guo

Shaofeng Zhang

Jianguo An

Yaping Zhao

Yuan Shen

Kaiqiang Shi

Leo Shen

Kang He

Hu Su

Yukun Liang

A receiving system for a lidar, comprises: a receiving lens, configured to receive echoes of a detection laser beam reflected by an object from an exterior of the lidar; a reflective structure, disposed downstream of an optical path of the receiving lens, to receive the echoes from the receiving lens, and change a propagation direction of the echoes by reflection; a detector, disposed downstream of an optical path of the reflective structure to receive a reflected echo from the reflective structure; and a ghost line reduction device, disposed between the reflective structure and the detector, wherein the ghost line reduction device includes a physical structure to block an echo that causes a ghost line in a point cloud of the lidar from entering the detector. The receiving system resolves the misrecognition problem caused by ghost lines in the point cloud to improve the detection accuracy of the lidar.

Receiving system for lidar, lidar and method for inhibiting ghost lines

The present invention relates to a method for preparing an intermediate (Formula IV) of sodium elagolix. The intermediate is prepared by the following route. The method has advantages of simple and safe operation, high yield, less environmental pollution, good economic effect and suitability for industrial production, wherein R represents C1-C4 substituted or unsubstituted benzyl or allyl. 

Method for preparing elagolix intermediate and composition thereof

A laser array combining device, which comprises: a laser gain medium array, comprising at least two laser gain units, and each generates a laser beam; a shaping optical system, optical shaping to the laser beams generated by the laser gain medium array, the shaping optical system comprises: a fast axis collimating lens, arranged at an emergent side of the laser gain medium array; a field flattening lens, arranged at an emergent side of the fast axis collimating lens, correcting the field curvature of the shaping optical system; a negative lens, arranged at an emergent side of the field flattening lens; a cylindrical lens, arranged at an emergent side of the negative lens for collimating the laser beams; a dispersing optical unit, arranged at an emergent side of the shaping optical system for diffracting incident laser beams; a partial reflection optical unit, receiving laser beams emitted by the dispersing optical unit.

Laser array beam combination device

A laser array includes laser diodes arranged in a stepped form; a shaping optical system deposited at the emitting side of each one of the diodes in the laser array; and a beam combining optical element deposited at the emitting side of the shaping optical system, the beam combining optical element having reflecting surfaces arranged in a stepped form and corresponding to each of the laser diodes.

Offset laser array with beam combining optical element

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Shanghai, China

Jintao Yang