Measurement of human eye aberrations using an optical simulator based on pyramid wavefront sensor

Chaoyan Wang; Xinyang Chen; Zheng Zheng; Zhaohui Bu; Jianqing Cai; Yuanyuan Ding; Bei Wang

doi:10.1117/12.2580684

5 November 2020 Measurement of human eye aberrations using an optical simulator based on pyramid wavefront sensor

Chaoyan Wang, Xinyang Chen, Zheng Zheng, Zhaohui Bu, Jianqing Cai, Yuanyuan Ding, Bei Wang

Proceedings Volume 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics; 1156615 (2020) https://doi.org/10.1117/12.2580684
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

In general, most of the adaptive optical systems for human eye aberration detection are based on the wavefront slope measurement provided by the Shark-Hartman wavefront sensor (SHWS), and then the wavefront slope is fed back to the deformable mirror to correct the human eye aberrations. Compared with the SHWS, the pyramid wavefront sensor (PWS) has the characteristics of fast sampling speed, wide linear capture range, and high sensitivity. Our works show that the modulation angle of the dynamic high-frequency modulator affects the dynamic measurement range, linearity and sensitivity of the pyramid sensing. The dynamic measurement range and the linear fitting residuals are both proportional to the modulation angle, and the sensitivity is inversely proportional to the modulation angle. Pixel combination affects the sensitivity of the detection signals of the pyramid sensor. The pixel combination mode of 1 × 1, 2 × 2, and 3 × 3 is tested respectively. When the pixel combination mode of 2 × 2 is used, the sensitivity of the signals will be highest significantly. In addition, the beacon light used to detect the human eye should not be too strong. The grinding “blind zone” of the spires and edges will have a scattering effect on the incident light and cause loss of light energy. Therefore, it is necessary to optimize the parameters of the pyramid sensor and further improve the processing technology of the pyramid prism.

Citation Download Citation

Chaoyan Wang, Xinyang Chen, Zheng Zheng, Zhaohui Bu, Jianqing Cai, Yuanyuan Ding, and Bei Wang "Measurement of human eye aberrations using an optical simulator based on pyramid wavefront sensor", Proc. SPIE 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics, 1156615 (5 November 2020); https://doi.org/10.1117/12.2580684

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Eye

Modulation

Wavefront sensors

Monochromatic aberrations

Optical simulations

Wavefronts

Sensors

Show All Keywords

Keywords/Phrases

Search In:

Publication Years