Infrared and Laser Engineering, Volume. 51, Issue 9, 20220389(2022)
Reduction of grid effect in ultra-light mirror machining by inflatable balanced method (invited)
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Fig. 3. (a) Surface precision simulation result under 2000 Pa pressure; (b) Simulation result of Gaussian filtering (Frequency band error greater than 30 mm)
Fig. 6. (a) Surface detection result of surface A; (b) Surface detection result of surface B
Fig. 7. (a) Gaussian filtering result of surface A; (b) Gaussian filtering result of surface B
Fig. 8. Surface precision comparison of surface A and surface B in the area of two support ribs
Table 1. Mechanical property parameters of ULE primary mirror
View tableView in ArticleTable 1. Mechanical property parameters of ULE primary mirror
Mechanical property parameters Value Modulus of elasticity/GPa 67 Density/t·mm−3 2.21×10−9 Poisson's ratio 0.17
Table 2. Analysis of PV and RMS values of surface shape at support ribs
View tableView in ArticleTable 2. Analysis of PV and RMS values of surface shape at support ribs
Surface A Surface B The reduction rate PV of area 1/nm 182.9 50.7 72.3% RMS of area 1/nm 41.3 13.2 68.5% PV of area 2/nm 133.9 59.3 55.7% RMS of area 2/nm 38.7 10.3 73.4%
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Qiuyue Yu, Xiaohua Zhou, Guoyan Wang, Guobao Qiao, Tianbin Lv, Zhaojian Zhang, Jinghua Wang, Jianye Shao, Yuntao Cheng. Reduction of grid effect in ultra-light mirror machining by inflatable balanced method (invited)[J]. Infrared and Laser Engineering, 2022, 51(9): 20220389
Paper Information
Category: Special issue—Ultra precision manufacture and testing technology of optical aspheric surface
Received: Jun. 7, 2022
Accepted: --
Published Online: Jan. 6, 2023
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