China
Africa
Explore chapters and articles related to this topic
Optics Components and Electronic Equipment
Published in Vadim Backman, Adam Wax, Hao F. Zhang, A Laboratory Manual in Biophotonics, 2018
Vadim Backman, Adam Wax, Hao F. Zhang
The most common type of mirror mount is the kinematic mount, which consists of a fixed frame and a moveable frame (Figure 2.25). The moveable frame holds the mirror and typically pivots on a ball bearing set into a hole on the fixed frame. The two frames are also kept in close proximity by a series of screws designed to maintain contact between the moveable frame and the two micrometers on the fixed frame. By adjusting the two micrometers, the profile of the moving frame can be changed to accommodate the desired angle and position of the mirror.
Design of biaxial flexural mount for a rectangular mirror with large aspect ratio of a space telescope
Published in Mechanics Based Design of Structures and Machines, 2023
Ruijing Liu, Zongxuan Li, Xiubin Yang, Qingya Li, Qiang Yong
The aperture of the rectangular mirror of an off-axis three-mirror anastigmatic (TMA) telescopes is 1340 mm × 150 mm. The slim light-weighted space-borne mirror has a very large aspect ratio (larger than the reported rectangular mirrors that can be found in literatures, such as Quickbird-2), and has critical requirements on the surface figure accuracy and the first-order natural frequency of the mirror assembly structures. A novel flexural mount is designed for the mounting and gravity offloading requirements of the mirror. As shown in Figure 1, different from the traditional flexible hinge design of mirror mount, the rotation centers of the upper and lower flexible hinges of the flexible hinge are not on the same plane, which can provide better translational freedom. Compared with the traditional flexure hinge, it can better offload the mirror body deformation caused by the external force load and the assembly error. The surface shape accuracy of the mirror body. The two-axis orthogonal flexural mount structure is adopted, which can not only ensure sufficient structural support rigidity, but also meet the stress adjustment requirements.
Determination of methane during anaerobic digestion by tunable diode laser absorption spectroscopy (TDLAS)
Published in Instrumentation Science & Technology, 2023
Haibin Cui, Fei Wang, Shengyu Hu, Wenyuan Wang, Jinhui Fan
Various components were installed in a homemade housing to assemble and seal the optical probe. Critical subassemblies were tested before integrating the optical probe, such as the photodetector and collimator, with its attached three-adjuster kinematic mirror mount, and lens subassemblies were placed precisely in the housing. The three-adjuster kinematic mirror mount is adjustable to achieve the required location of the laser beam.