Large-deviation achromatic Risley prisms pointing systems

Lacoursière, Jean; Doucet, Michel; Curatu, Eugene O.; Savard, Maxime; Verreault, Sonia; Thibault, Simon; Chevrette, Paul C.; Ricard, Benoit

doi:10.1117/12.469192

Cited by 24 publications

(9 citation statements)

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“…The scanner is placed between the normal mirror and the reference mirror of the interferometer. [11][12] To avoid the environment influence, the whole test system is mounted on the gas float platform and is screened by shielding can.…”

Section: The Test Experiments With Interferometermentioning

confidence: 99%

Experiment research on orthogonal tilting scanner

Liu

Sun

et al. 2007

SPIE Proceedings

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The original scanner of tilting orthogonal double prisms is studied for testing the tracking performance in inter-satellite laser communications. Two prisms respectively rotate around the horizontal axle and the vertical one within the admissible range to determine the corresponding orientation and position of the passing beam, therefore the high accuracy deviation angle of passing beam can be performed. The test experiments performed with autocollimator and interferometer, as well as the theoretical analysis, indicates that the scanner can meet the requirements of the deviation accuracy superior to 0.5 µrad with the deviation range greater than 500 µrad, which accords to our design requirements.

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Section: The Test Experiments With Interferometermentioning

confidence: 99%

Experiment research on orthogonal tilting scanner

Liu

Sun

et al. 2007

SPIE Proceedings

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“…Some on-axis approaches, such as acousto-optic deflectors [4][5][6][7] and electro-optic deflectors [8][9][10][11][12], are highly expensive. A relatively low cost on-axis solution is the Risley Prisms based system [13][14][15], which creates complicated scanning patterns but lack the ability of doing a raster scan.…”

Section: Introductionmentioning

confidence: 99%

Customized profile lens based linear response fast spinning on-axis optical scanners for 3D laser scanning microscopy

et al. 2014

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Previously, we presented an on-axis linear-response linear-motion optical scanner. While the linear design is highly desired for engineering consideration, it was still lacking the scanning speed required for imaging applications. We here present a customized profile lens (CPL), tailored for high speed performance while maintaining the advantages of a linear response on-axis optical scanner. The device was built and tested experimentally on an optical bench. The test results demonstrate precise linear response and fast scanning speed, and revealed video frame rate scanning ability. The implementation of the CPLs in laser scanning systems is promising in improving the current 3D laser scanning microscopy systems by reducing the size, error, and complexity of the system, as well as other systems unitizing high speed laser scanning technique.

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“…To perform target tracking, the prisms must be controlled to rotate to a certain orientation in a short time so as to track the dynamic targets rapidly, which is a challenge for Risley-prism-based beam steering systems. The prevalent challenges include nonlinearity and singularity problems [3,6,9,10]. Unlike the conventional gimbal-based beam steering system, the relation between the pointing position and the corresponding prisms' orientations is nonlinear in the Risley-prism-based systems, which leads to nonlinearity of the system control.…”

Section: Introductionmentioning

confidence: 99%

Motion control of the wedge prisms in Risley-prism-based beam steering system for precise target tracking

et al. 2013

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Two exact inverse solutions of Risley prisms have been given by previous authors, based on which we calculate the gradients of the scan field that open a way to investigate the nonlinear relationship between the slewing rate of the beam and the required angular velocities of the two wedge prisms in the Risley-prism-based beam steering system for target tracking. The limited regions and singularity point at the center and the edge of the field of regard are discussed. It is found that the maximum required rotational velocities of the two prisms for target tracking are nearly the same and are dependent on the altitude angle. The central limited region is almost independent of the prism parameters. The control singularity at the crossing center path can be avoided by switching the two solutions.

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Large-deviation achromatic Risley prisms pointing systems

Cited by 24 publications

References 0 publications

Experiment research on orthogonal tilting scanner

Experiment research on orthogonal tilting scanner

Customized profile lens based linear response fast spinning on-axis optical scanners for 3D laser scanning microscopy

Motion control of the wedge prisms in Risley-prism-based beam steering system for precise target tracking

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