• Infrared and Laser Engineering
  • Vol. 52, Issue 4, 20220635 (2023)
Yongjian Wu, Dawei Yang, Xin Sun, Yong Liu, and Yongli Hu
Author Affiliations
  • Beijing Key Laboratory of Advanced Optical Remote Sensing Technology, Beijing Institute of Mechanics & Electricity, Beijing 100094, China
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    DOI: 10.3788/IRLA20220635 Cite this Article
    Yongjian Wu, Dawei Yang, Xin Sun, Yong Liu, Yongli Hu. Design and test of precision secondary mirror adjustment mechanism for space optical remote sensor[J]. Infrared and Laser Engineering, 2023, 52(4): 20220635 Copy Citation Text show less
    Secondary mirror adjustment mechanism
    Fig. 1. Secondary mirror adjustment mechanism
    Principle of the secondary mirror focusing mechanism
    Fig. 2. Principle of the secondary mirror focusing mechanism
    Installation and adjustment of secondary mirror assembly
    Fig. 3. Installation and adjustment of secondary mirror assembly
    High precision linear actuator assembly
    Fig. 4. High precision linear actuator assembly
    LVDT linear differential sensor assembly
    Fig. 5. LVDT linear differential sensor assembly
    Split nut fits with threaded guide rod
    Fig. 6. Split nut fits with threaded guide rod
    Adjustment mechanism accuracy test
    Fig. 7. Adjustment mechanism accuracy test
    Adjustment range
    Fig. 8. Adjustment range
    Inclination deviation of secondary mirror
    Fig. 9. Inclination deviation of secondary mirror
    Eccentricity of secondary mirror
    Fig. 10. Eccentricity of secondary mirror
    Adjustment step of the secondary mirror
    Fig. 11. Adjustment step of the secondary mirror
    Sliding spiral driveRolling screw drive
    AdvantagesSimple structure and low cost; Easy to self-lockLow friction and high transmission efficiency; No additional clearance elimination design required
    DisadvantagesHigh friction and low transmission efficiency; Clearance elimination design is required Complex structure and high cost; Need anti reversal design
    Table 1. Comparison of common screw drives
    Yongjian Wu, Dawei Yang, Xin Sun, Yong Liu, Yongli Hu. Design and test of precision secondary mirror adjustment mechanism for space optical remote sensor[J]. Infrared and Laser Engineering, 2023, 52(4): 20220635
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