Micro optical element translation mechanism

Abstract

The invention relates to the technical field of optical element adjustment, in particular to micro optical element translation mechanism, which comprises a motor component, a guide rail component, an optical component, a rocker arm and a connecting rod, wherein the guide rail component is fixed on the motor component; one end of the rocker arm is connected with the output shaft of the motor component, while the other end is connected with one end of the connecting rod; the connecting rod connects the rocker arm and the guide rail component; and the optical component is fixed on the guide rail component. The translation mechanism has a small volume, a simple moving chain and a simple control mode, can realize a multi-station translation function of the micro optical element, can be used for the multi-station translation of optical elements such as plane mirrors, beam splitters and the like in optical detection equipment.

Description

technical field [0001] The invention relates to the technical field of optical device adjustment, in particular to a micro-optical device translation mechanism. Background technique [0002] In various optical testing equipment and instruments, it is often necessary to move an optical device, and such requirements often have very strict requirements on the volume of the translation mechanism. So the miniature translation mechanism is the best choice for this kind of product. [0003] Commonly used linear drives have the following technical solutions: [0004] First, a motor is used to drive the screw, and a nut is mounted on the screw. The nut is connected to a sleeve assembly. The socket extends from a housing which prevents the socket from turning with the nut but allows the socket to be extended or retracted from the socket. The rotation of the screw produces a force on the nut, and the direction of the force is parallel to the axis of the screw, so as to force the nu...

AI Technical Summary

Problems solved by technology

For this type of design, the size along the axis of the screw is often larger, and the structure is more complex, requiring the use of micro-screws, nuts, and micro-sleeves. Closed-loop control is used for control, and the cost is relatively high.

[0005] Second, the direct drive of the voice coil motor is used to achieve linear displacement. This method has high precision and can be made small in size, but this design requires expensive linear encoders and complex control systems. The assembly is complicated and the cost is often very high. high

[0006] Third, it is realized by using a micro-electromagnet. This design method is simple in structure, but the micro-electromagnet often needs to be customized by the user, so it is not very convenient to design. At the same time, this method can only have a fixed displacement output, while other Great impact when moving

This design has complex structure, large volume and small linear displacement

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