Dr. Guilin Wang Profile

Dr. Guilin Wang

at National Univ of Defense Technology

SPIE Involvement:

Author

Publications (5)

Proceedings Article | 24 October 2017 Paper

Study on on-machine defects measuring system on high power laser optical elements

Chi Luo, Feng Shi, Zhifan Lin, Tong Zhang, Guilin Wang

Proceedings Volume 10457, 104572C (2017) https://doi.org/10.1117/12.2284799

KEYWORDS: Optical components, Defect detection, Laser scattering, Scattering

Read Abstract +

Proceedings Article | 24 October 2017 Paper

Design on high-current pulsed electron beam modification and analysis of machining characteristics for spinel

Jinping Qiao, Guilin Wang, Shanyong Chen, Guipeng Tie

Proceedings Volume 10462, 104623P (2017) https://doi.org/10.1117/12.2285253

KEYWORDS: Electron beams, Spinel, Beam analyzers, Infrared radiation, Transmittance, Magnetorheological finishing

Read Abstract +

Proceedings Article | 28 October 2016 Paper

Influence of flexibility of polishing tool on the microscopic figure of spinel surface and optimal design

Zhi-ming Wu, Gui-lin Wang, Shan-yong Chen

Proceedings Volume 9683, 96830A (2016) https://doi.org/10.1117/12.2243291

KEYWORDS: Polishing, Spinel, Surface finishing, Surface roughness, Radium, Polyurethane, Diamond, Magnetorheological finishing, Infrared radiation, Domes

Read Abstract +

Proceedings Article | 6 March 2015 Paper

Influence of measuring algorithm on shape accuracy in the compensating turning of high gradient thin-wall parts

Tao Wang, Guilin Wang, Dengchao Zhu, Shengyi Li

Proceedings Volume 9446, 944654 (2015) https://doi.org/10.1117/12.2182649

KEYWORDS: Temperature metrology, Photovoltaics, Domes, Error analysis, Environmental sensing, Computer simulations, Diamond machining, Diamond, Time metrology, Aerodynamics

Read Abstract +

Proceedings Article | 18 November 2014 Paper

Subaperture test of wavefront error of large telescopes: error sources and stitching performance simulations

Shanyong Chen, Shengyi Li, Guilin Wang

Proceedings Volume 9298, 929817 (2014) https://doi.org/10.1117/12.2070849

KEYWORDS: Wavefronts, Telescopes, Monochromatic aberrations, Device simulation, Space telescopes, Calibration, James Webb Space Telescope, Error analysis, Large telescopes, Interferometers

Read Abstract +

The wavefront error of large telescopes requires to be measured to check the system quality and also estimate the misalignment of the telescope optics including the primary, the secondary and so on. It is usually realized by a focal plane interferometer and an autocollimator flat (ACF) of the same aperture with the telescope. However, it is challenging for meter class telescopes due to high cost and technological challenges in producing the large ACF. Subaperture test with a smaller ACF is hence proposed in combination with advanced stitching algorithms. Major error sources include the surface error of the ACF, misalignment of the ACF and measurement noises. Different error sources have different impacts on the wavefront error. Basically the surface error of the ACF behaves like systematic error and the astigmatism will be cumulated and enlarged if the azimuth of subapertures remains fixed. It is difficult to accurately calibrate the ACF because it suffers considerable deformation induced by gravity or mechanical clamping force. Therefore a selfcalibrated stitching algorithm is employed to separate the ACF surface error from the subaperture wavefront error. We suggest the ACF be rotated around the optical axis of the telescope for subaperture test. The algorithm is also able to correct the subaperture tip-tilt based on the overlapping consistency. Since all subaperture measurements are obtained in the same imaging plane, lateral shift of the subapertures is always known and the real overlapping points can be recognized in this plane. Therefore lateral positioning error of subapertures has no impact on the stitched wavefront. In contrast, the angular positioning error changes the azimuth of the ACF and finally changes the systematic error. We propose an angularly uneven layout of subapertures to minimize the stitching error, which is very different from our knowledge. At last, measurement noises could never be corrected but be suppressed by means of averaging and environmental control. We simulate the performance of the stitching algorithm dealing with surface error and misalignment of the ACF, and noise suppression, which provides guidelines to optomechanical design of the stitching test system.

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years