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An adaptive optics device based on eigenmode control of a pyramidal wavefront sensor

A technology of adaptive optics and wavefront sensors, applied in optics, optical components, instruments, etc., can solve the problems of low closed-loop stability of the system and large influence of measurement noise

Active Publication Date: 2020-10-23
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the shortcomings of existing adaptive optics devices based on pyramidal wavefront sensors, which have a large impact on measurement noise and low system closed-loop stability, the present invention proposes an eigenmode control based on pyramidal wavefront sensors The adaptive optics device, this mode control method can perform orthogonal decoupling processing on the measurement noise and the detection signal, and eliminate the eigenmode items with serious noise influence through mode filtering, thereby effectively removing the influence of the measurement noise of the pyramidal wavefront sensor Improving Closed-Loop Stability of Adaptive Optics Systems by Detecting Signal Effects

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  • An adaptive optics device based on eigenmode control of a pyramidal wavefront sensor
  • An adaptive optics device based on eigenmode control of a pyramidal wavefront sensor

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] like figure 1 As shown, the present invention is an adaptive optics device based on the eigenmode control of the pyramid wavefront sensor. , an imaging lens 6, a first detector 7, a modulating mirror 8, a focusing lens 9, a beam splitting pyramid 10, a follow-up lens 11, a second detector 12 and a wavefront processor 13. The tilting mirror 1 is used to correct the overall tilt of the incident wavefront; the deformable mirror 2 is used to correct the non-integral tilted high-order aberration of the incident wavefront; the first off-axis parabolic mirror 3 and the second off-axis parabolic mirror 4 A beam reduction system is formed, which is used to reduce the large-diameter beam incident on the deformable mirror to a small-diameter beam suitable for detection by the pyramidal wavefront sensor; the beam splitter 5 is used to split the bea...

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Abstract

The invention discloses an adaptive optics device based on eigenmode control of a pyramidal wavefront sensor, which consists of a tilting mirror (1), a deforming mirror (2), a first off-axis parabolic mirror (3), and a second off-axis parabolic mirror (4), beam splitter (5), imaging lens (6), detector (7), modulation mirror (8), focusing lens (9), beam splitting pyramid (10), follow-up lens (11), detector (12 ) and a wavefront processor (13), use the pyramidal wavefront sensor eigenmode to obtain the transfer function matrix of the adaptive optics system, and improve the stability of the transfer function matrix through mode filtering, thereby effectively improving the Closed-loop stabilization of the sensor's adaptive optics system. The invention can select the correction effect of the system according to the actual situation. The invention makes full use of the existing pyramidal wavefront sensor equipment without adding additional optical devices.

Description

technical field [0001] The invention relates to an adaptive optics device, in particular to an adaptive optics device based on eigenmode control of a pyramidal wavefront sensor. Background technique [0002] Adaptive optics technology uses the wavefront sensor to measure the incident wavefront distortion aberration in real time, performs restoration calculation through the wavefront controller, and feedbacks the wavefront corrector to perform wavefront distortion compensation and correction, so as to ensure that the optical system can automatically adapt to changes in external conditions, The ability to maintain a good working condition all the time, so it has important applications in high-resolution imaging observation, laser communication, human eye aberration measurement and other fields. [0003] The wavefront sensor is an important part of the adaptive optics system, which is used to detect the changing wavefront distortion in real time, so it is the core device to rea...

Claims

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Application Information

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IPC IPC(8): G02B27/00G02B7/182G02B26/08
CPCG02B7/182G02B26/0816G02B27/0068
Inventor 王胜千魏凯饶长辉
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI