Optical element alignment adjustment mechanism

Abstract

An optical element alignment adjustment mechanism includes an outer ring, a casing, a top plate, a middle plate, a worm wheel plate, a support plate, claws, an optical element, a hollow table, a worm, and a worm mounting seat. In the present invention, by adjusting the worm screw and the worm gear plate mechanism, the claws connected with the worm gear plate are driven to move to the middle, and the optical element is clamped, and then the top screw passes through the positive adjustment hole at the top of the side of the shell to drive the middle plate connected with the top plate , worm wheel plate, support plate, claws, worm, and worm mount move in different directions, so that the optical element can translate in the center hole of the hollow table, and realize the fine adjustment of the optical element. The invention has simple structure, and the overall structure is stable, reliable and compact.

Description

technical field [0001] The invention relates to a fixture and an adjustment mechanism, in particular to an optical element alignment adjustment mechanism. Background technique [0002] In the experiment of optical precision machinery, it is often required to have a high degree of coaxiality between the optical element and the support on which the optical element is installed, and to have a certain adjustment function for the optical element. The cooperation of different adapter boards can meet the mediation requirements in different directions. The disadvantage of this structure is that the alignment of the optical components is not good, and it needs to be connected with adapter boards of different specifications, which has poor versatility and needs to be adjusted when adjusting Pass is not easy to adjust. [0003] In the patent document with the publication number CN101369104A, a micro-adjustment device for optical elements is disclosed, which adjusts and positions the o...

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Problems solved by technology

[0002] In the experiment of optical precision machinery, it is often required to have a high degree of coaxiality between the optical element and the support on which the optical element is installed, and to have a certain adjustment function for the optical element. The cooperation of different adapter boards can meet the mediation requirements in different directions. The disadvantage of this structure is that the alignment of the optical components is not good, and it needs to be connected with adapter boards of different specifications, which has poor versatility and needs to be adjusted when adjusting Difficult to adjust by

[0003] In the patent document with the publication number CN101369104A, a micro-adjustment device for optical elements is disclosed, which adjusts and positions the optical elements. The advantage of this device is that it has good stability. Adjusting and positioning the optical element has high adjustment accuracy, but it is not convenient to realize the neutral installation and adjustment requirements of the optical element. In the patent document of publication number CN102129108A, a four-dimensional optical adjustment device can be realized, but for the optical element in the center of the support table The requirements for installation, clamping and adjustment cannot achieve this function. However, in the patent document of publication number CN102073116B, a radial positioning mechanism for the center of the optical element is disclosed. The expansion ring of the mechanism is adjusted by an integrated The central shaft is fixed on the base, and its top end is matched with the inner surface of the flexible ring through a conical surface; the outer surface of the flexible ring is an arc surface, which forms a ring with the inner surface of the sleeve Line contact; the central shaft, flexible ring and shaft sleeve are embedded in the central hole of the optical element, and the outer surface of the shaft sleeve is glued to the optical element; the adjustment ring and the central shaft are connected by a pre-tightening screw, and the pre-tightening screw can be turned to make the flexible The ring and the central shaft are interference fit; the loosening screw is threadedly connected with the adjusting ring, and its front end pushes against the central shaft. Adjusting the loosening screw can make the flexible ring fit with the central shaft. This mechanism can conveniently realize large optical Radial positioning of components such as the support structure of the primary mirror of a large-aperture telescope, which is relatively complex, and for optical components mounted relative to the center of the support, clamping and fine-tuning of different specifications cannot be performed

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