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High-efficiency voice coil driver and deformable mirror

A driver and voice coil technology, applied in the field of adaptive optics, can solve problems such as complex structure and large volume, and achieve the effects of compact structure, improved efficiency and high efficiency

Active Publication Date: 2020-10-16
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to improve the efficiency of the deformable mirror voice coil driver while avoiding the problems of complex structure and large volume, the present invention provides a high-efficiency voice coil driver for deformable mirrors with a new structure

Method used

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  • High-efficiency voice coil driver and deformable mirror
  • High-efficiency voice coil driver and deformable mirror
  • High-efficiency voice coil driver and deformable mirror

Examples

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Embodiment 1

[0039] This embodiment provides a high-efficiency voice coil driver for deformable mirrors, see image 3 , image 3 Among them, 1 is a thin mirror, 2 is an annular permanent magnet; 3 is a coil coaxial with the permanent magnet, and 5 is a cylindrical rod of epoxy resin material, which connects the permanent magnet 2 and the thin mirror 1; the annular permanent magnet 2 is set Between the two coils 3 and connected to the thin mirror 1 by a rod 5 .

[0040] and figure 2 Compared with the voice coil driver shown, the voice coil driver provided by this embodiment does not introduce soft magnetic components into the coil 3, thus reducing the complexity and volume of the system, and at the same time compared to figure 1 As shown in the voice coil driver, a coil is added to the voice coil driver provided by this embodiment, which increases the force and provides the direction of the force, and improves the efficiency of the voice coil driver.

[0041] Since the efficiency of the...

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Abstract

The invention discloses a high-efficiency voice coil driver and a deformable mirror, and belongs to the field of adaptive optics. According to the invention, by deriving an analytical formula of the motor constant of the voice coil driver, factors influencing the efficiency of the voice coil driver are mastered, and the voice coil driver with a new structure is designed; on the basis, a finite element method is used for simulation, geometrical parameters and physical parameters of a permanent magnet and a coil are optimized, and motor constants are used for evaluation to obtain optimal parameter data including the inner diameter, the outer diameter and the thickness of the permanent magnet, the inner diameter, the outer diameter and the thickness of the coil and the size of an air gap between the permanent magnet and the coil. Under the condition that the number of turns of the voice coil is not changed, the excellent effect of improving the efficiency of the voice coil driver by 150%is achieved, and the high-efficiency voice coil driver and the deformable mirror are more suitable for manufacturing a voice coil deformable mirror with a large number of driving units, low loss and high modulation precision.

Description

technical field [0001] The invention relates to a high-efficiency voice coil driver and a deformable mirror, belonging to the field of adaptive optics. Background technique [0002] In 1953, Babcock first proposed the concept of adaptive optics, which is to improve the resolution of the target image by detecting and correcting the optical distortion caused by atmospheric turbulence in real time. Deformable mirror is one of the core components of adaptive optics system. After years of research and development, people have developed different types of deformable mirrors: PZT deformable mirrors, electrostrictive deformable mirrors, film deformable mirrors, MEMS, voice coil deformable mirrors, etc., and are widely used in astronomical observation, microscopic imaging, high-power Laser, fundus imaging and other fields. Among them, the PZT deformable mirror is the most widely used deformable mirror at present, but it has hysteresis and low modulation, which limits its applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K33/12H02K33/18G02B26/06
CPCG02B26/06H02K33/12H02K33/18
Inventor 胡立发曹硕张志高赵子云顾虎
Owner JIANGNAN UNIV
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