Chao Zhang, Gengxiu Tang, Zhigang Liu, Liunian Zheng, Youen Jiang, Donghui Zhang, Jianqiang Zhu. Research on structure design of optical mount with high stability in laser system[J]. Infrared and Laser Engineering, 2021, 50(6): 20210087
- Infrared and Laser Engineering
- Vol. 50, Issue 6, 20210087 (2021)
Fig. 1. A common optical mount used in laser system. (a) Oblique view; (b) Exploded view
Fig. 2. Cross-sectional view of a common adjustment screw for precision displacement driving. (a) Common adjustment screw; (b) Schematic diagram of the thread pair
Fig. 3. Effect of the axial shift of the adjustment screw structure on the position of the optical part. (a) Schematic diagram of optical mount disassembly; (b) Position change of optical part
Fig. 4. Effect of the axial initial position and axial shift of the adjustment screw on the angle position of the optic part
Fig. 5. An improved adjustment screw structure. (a) Exploded view of the structure; (b) Thread fit; (c) The cross section of A -A
Fig. 6. Diagram of adjustment screw and nuts. (a) Adjustment screw; (b) Slotted nut; (c) Un-slotted nut
Fig. 7. Test of axial micro-displacement of adjustment screw. (a) Top view; (b) Oblique view
Fig. 8. Tests of axial clearance change of different adjustment screw structures
Fig. 9. Optical mounts with different adjustment screw structure. (a) The un-slotted; (b) The slotted
Fig. 10. Light path diagram for stability comparison[20]
Fig. 11. Thermal shocking tests of two optical mounts. (a) The slotted; (b) The un-slotted
Fig. 12. Angular shift of optical mounts under thermal shocking
Fig. 13. Angular shift of different optical mounts under thermal shocking. (a) The slotted (grease+heat treatment) versus the un-slotted (grease+heat treatment); (b) the slotted (grease +heat treatment) versus the structure (no grease)
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Table 1. Design parameters of the axial slots of adjustment screw structure
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Table 2. Angular shift of different optical mounts after baking
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