Quick mechanical optical switch with dual voice coil linear motors

A linear motor and double voice coil technology, applied in the laser field, can solve the problems of unbearable high-power laser, vibration noise, slow switching speed, etc., and achieve the effect of simple structure, low vibration noise and strong applicability
CN110376729APending Publication Date: 2019-10-25XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Publication Date
2019-10-25

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Abstract

The invention provides a quick mechanical optical switch with dual voice coil linear motors, thereby solving problems that the existing mechanical optical switch has the slow switching speed or the existing mechanical optical switch has the fast switching speed but the obvious vibration noises and thus can not carry the large-power laser. The switch comprises a housing, a driving circuit, a firstvoice coil linear motor, and a second voice coil linear motor. The first voice coil linear motor and the second voice coil linear motor are arranged in the housing in parallel or a collinear manner; and moves have opposite directions. A first light blocking plate and a second light blocking plate are arranged at the mover end portions of the first voice coil linear motor and the second voice coillinear motor respectively. M first light transmission holes distributed at intervals are formed in the first light blocking plate and M second light transmission holes distributed at intervals are formed in the second light blocking plate. M third light transmission holes and M fourth light transmission holes are formed in the two opposite side walls of the housing. When the optical switch is in an on state, the M first light transmission holes, the M second light transmission holes, the M third light transmission holes and the M fourth light transmission holes correspond to each other one byone in a concentric manner in a laser beam transmission direction. The M is larger than or equal to 2.
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Description

technical field

[0001] The invention relates to the field of laser technology, in particular to a double-voice-coil linear motor fast mechanical optical switch. Background technique

[0002] Many experiments in laser optics require fast switching of laser beams using Optical Switches (OS). Optical switches are classified according to their structure and technology, and are mainly divided into mechanical optical switches and non-mechanical optical switches. Practical non-mechanical optical switches mostly use acousto-optic modulation (AOM) and electro-optic modulation (EOM) technologies, and their outstanding advantages are fast response speed. The switching time can reach sub-milliseconds or even tens of microseconds, but the beam aperture of this type of switch is small, in most cases the aperture is about 1 mm, and it needs to be carefully aligned when using it. The biggest disadvantage is that the beam cannot be completely turned off. This can be a fatal flaw in some tes...

Claims

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