Overview of beam steering technology based on rotational double prisms

Da-peng, 范大鹏 Fan; Yuan, 周远 Zhou; Ya-fei, 鲁亚飞 Lu; Mo, 黑沫 Hei; Fei-tuan, 熊飞湍 Xiong; Kai, 李凯 Li

doi:10.3788/co.20130602.0136

Cited by 7 publications

(2 citation statements)

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“…Risley-prism-based beam steering system is used to change the beam propagation direction according to the refraction principle by adjusting the rotation angle of two optical wedges to achieve precise control of beam pointing [5].In freespace laser communication systems, the dispersion problem for communication laser and beacon laser due to different wavelengths cannot be neglected, and previous studies on achromatic correction prisms mainly focus on the infrared wavelength region, and there are few studies on achromatic correction prisms in free-space laser communication [6][7][8]. In this paper, we propose a method to solve the dispersion problem by pre-compensating the two-wavelength directional consistency through the vibrating mirror.…”

Section: Introductionmentioning

confidence: 99%

Design and achromatic analysis of Risley-prism-based beam steering system for space laser communication

Chen

Zhang

Liu

et al. 2023

Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023)

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In order to meet the demand for lightweight and miniaturization of satellite-based laser communication loads, a rotating dual-optical wedge turntable based on the risley prism is designed. A pre-compensation scheme for achromatic is proposed and simulated to verify the feasibility of the inconsistent deflection angle between communication laser beam and beacon laser beam due to different wavelengths.

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Section: Introductionmentioning

confidence: 99%

Design and achromatic analysis of Risley-prism-based beam steering system for space laser communication

Chen

Zhang

Liu

et al. 2023

Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023)

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“…In the fields of microscopic observation, traditional microscopes with a small FOV and a fixed optic axis do not provide enough visual information for multi-target and dynamic target observation. Currently, many studies use Risley prisms as an optic axis scanning mechanism, resulting in a compact optical scanning microscope system with a large imaging FOV and high resolution, which can be used for microscopic observation in biomedical, microelectromechanical, and other fields [8]. Warger, W. C. et al designed a confocal microscope device incorporating the Risley-prism-based imaging sensor for the detection of skin lesions [9,10].…”

Section: Introductionmentioning

confidence: 99%

An Automatic Calibration Method for the Field of View Aberration in a Risley-Prism-Based Image Sensor

Lin,

Liu,

Gan

et al. 2023

Sensors

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Risley-prism-based image sensors can expand the imaging field of view through beam control. The larger the top angle of the prism, the higher the magnification of the field of view, but at the same time, it aggravates the problem of imaging aberrations, which also puts higher requirements on the aberration correction method for the Risley-prism-based image sensor. To improve the speed, accuracy, and stability of the aberration correction process, an automatic calibration method for the Risley-prism-based image sensor is proposed based on a two-axis turntable. The image datasets of the calibration plate with different prism rotation angles and object distances are acquired using a two-axis turntable. Then, the images of the calibration plate are pre-processed using the bicubic interpolation algorithm. The calibration parameters are finally calculated, and parameter optimization is performed. The experimental results verify the feasibility of this automated calibration method. The reprojection error of the calibration is within 0.26 pixels when the distance of the imaging sensor is 3.6 m from the object, and the fine aberration correction results are observed.

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Double-wedge prism imaging tracking device based on the adaptive boresight adjustment principle

Zhong

Liu

et al. 2019

Review of Scientific Instruments

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A double-wedge prism device has been used in various imaging detection applications due to its high precision and strong anti-disturbance capability. In this paper, a self-adaptation double-wedge prism boresight adjustment principle suitable for both far-field and near-field target tracking is proposed. In order to realize this application, an adaptive variable boresight imaging tracking device is designed specifically. Then a tracking error model is established, and dynamic simulation, error evaluation, and sensitivity analysis are carried out according to the design objective. The experimental results show that the pitch angle deviation and azimuth angle deviation of the device are less than 6′, and the blind zone can be eliminated by adding a third wedge prism, thus achieving high-precision boresight adjustment and tracking.

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Overview of beam steering technology based on rotational double prisms

Cited by 7 publications

References 0 publications

Design and achromatic analysis of Risley-prism-based beam steering system for space laser communication

Design and achromatic analysis of Risley-prism-based beam steering system for space laser communication

An Automatic Calibration Method for the Field of View Aberration in a Risley-Prism-Based Image Sensor

Double-wedge prism imaging tracking device based on the adaptive boresight adjustment principle

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