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Wavefront phase correction device

A wavefront phase correction device technology, which is applied in the field of optical instruments, can solve the problems of high manufacturing process requirements for continuous surface deformable mirrors, the arrangement interval of actuator arrays cannot be too small, and the wavefront correction effect is limited, so as to increase manufacturing Effects of Difficulty, Quantity Reduction, and Cost Increase

Active Publication Date: 2018-08-28
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is an obvious problem with this continuous surface deformable mirror—the multi-actuator array needs to have a small enough arrangement interval to ensure the correction effect on the light wave front, and at the same time, crosstalk interference will occur between adjacent actuators. , so the arrangement interval of its actuator array cannot be too small
Therefore, not only the array density is limited, but also the corresponding control process is complicated
This problem limits its wavefront correction effect, and also causes the problem of high manufacturing process requirements and high manufacturing cost of continuous surface deformable mirrors.

Method used

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Embodiment 1

[0037] The embodiment of the present invention proposes a continuous surface deformation mirror unit, see figure 1 , the continuous surface deformable mirror unit can be regarded as a continuous surface deformable mirror actuated by a single actuator (or called a single point actuated deformable mirror) with a certain size. Functionally, each continuous surface deformable mirror unit can independently correct the wavefront phase of the local light wave (corresponding to the position of the actuator). Such as figure 1 Among them, the working surfaces of the three deformable mirror units are arranged in parallel up and down, and the light waves are reflected sequentially at the same incident angle among the three deformable mirrors. Under the actuation of the actuator, the surface shape of the deformable mirror unit changes, so that the wavefront phase of the reflected light wave is corrected.

[0038] It can be seen that such a continuous surface deformable mirror unit can mo...

Embodiment 2

[0041] The embodiment of the present invention proposes a single-point double-layer wavefront phase correction device, which includes: a plurality of continuous surface deformable mirror units as described in Embodiment 1, each of which is composed of a continuous surface deformable mirror unit The corresponding actuator is actuated; the continuous surface deformation mirror unit is arranged in two layers parallel to the working surface, which is used to make light waves reflect sequentially between the two layers of continuous surface deformation mirror units; each continuous surface deformation mirror unit is used to perform phase correction on a corresponding local range of the optical wavefront.

[0042] Similar to the scenario given in Example 1, a plurality of deformable mirror units are arranged into two layers of parallel and opposite working surfaces, so that light waves are reflected sequentially between the two layers of continuous surface deformable mirror units, so...

Embodiment 3

[0070] The embodiment of the present invention proposes a single-point double-layer wavefront phase correction device, see Figure 4, the device comprises: the device comprises a plurality of continuous surface deformable mirror units and a standard plane mirror, each of said continuous surface deformable mirror units is actuated by a corresponding actuator; said continuous surface deformable mirror units are arranged in A layer where the working plane is parallel to the standard plane reflector is used to reflect light waves sequentially between the continuous surface deformable mirror unit and the standard plane reflector in this layer; each continuous surface deformable mirror unit is used to adjust the wave front A corresponding local range for phase correction.

[0071] The situation of this embodiment of the present invention is similar to that of Embodiment 2, except that one layer of the deformable mirror unit is replaced by a standard plane mirror. Therefore, in the ...

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Abstract

The invention relates to the field of optical instruments, and provides three kinds of wavefront phase correcting devices. Aiming at the problems in the prior art that the array density of a continuous surface deformable mirror is limited, the wavefront correction effect is limited, the manufacturing process requirement is high and the manufacturing cost is high, the wavefront phase correcting device divides a complete continuous surface deformable mirror actuated by multiple actuators into a plurality of continuous surface deformable mirror units actuated by a single actuator or small number of actuator groups, the single-point single-layer type, single-point dual-layer type and multi-point type wavefront phase correcting devices are provided for different application situations, and the density of an equivalent actuator for wavefront phase correction can be increased, thereby optimizing the wavefront phase correction effect, simplifying the manufacturing process of the continuous surface deformable mirror, and reducing the manufacturing cost.

Description

technical field [0001] The invention relates to the field of optical instruments, and specifically provides three wavefront phase correction devices. Background technique [0002] When a light wave propagates in a medium, its wavefront is usually affected by various factors and undergoes a phase change. This phenomenon often has an adverse effect on activities that rely on light waves. For example, in the field of astronomical observation, the disturbance of the air changes the wavefront phase of the light wave propagating in air and other media, which will lead to the failure of astronomical observation. Another example is in the field of high-energy lasers, the thermal lens effect of gain crystals and other optical components will cause the laser wavefront phase to change, reducing the output laser output efficiency and light wave quality. Adaptive optics plays an important role in the field of optics as an effective method to correct the wavefront aberration of light in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/06
Inventor 黄磊巩马理马兴坤薛峤边琪
Owner TSINGHUA UNIV