Patent ID: 11868055
Assignee: THE INSTITUTE OF OPTICS AND ELECTRONICS, THE CHINESE ACADEMY OF SCIENCES
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. The multifunctional lithography device according claim 8, wherein the coarse displacement closed-loop system comprises the linear guide rail anti-deviation mechanism, the Z-direction coarse displacement rotary motor, the three-point incremental grating ruler, the compression spring, and a cam mounting assembly, the cam is driven to move by a rotation of the Z-direction coarse displacement rotary motor, an uneven rotation of the cam causes a change in a plane height of the angular displacement mechanism, the linear guide rail anti-deviation mechanism prevents the mechanism from being damaged due to an excessively large difference in a three-point lifting height, Z-direction height differences of the motor are respectively recorded by the three-point incremental grating ruler, so as to control and adjust a level of the angular displacement mechanism, the cam of the linear guide rail anti-deviation mechanism enters a descending process, and the compression spring bears an overall weight to avoid a fatigue damage of the cam.