Collimated beam divergence angle detection device and divergence angle detection method

• Main Authors: LI JUNFENG, LAN WENKE, ZHENG JIALE, WU XUEQIN, SUN WENJIE, WANG ZEKAI, CHEN YIKAI, SHEN ZHONGHUA
• Format: Patent
• Language: Chinese; English
• Published: 09.05.2023
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a collimated beam divergence angle detection device and a divergence angle detection method. According to the device, detected light can be focused through the lens group, passes through the cylindrical prism and is incident to the surface of the photonic crystal, and a light...