23 November 2009Uncollimated light beam illumination during the ocular aberration
detection and its impact on the measurement accuracy by using
Hartmann-Shack wavefront sensor
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The impact on the measurement accuracy caused by uncollimated illumination beam during the process of human eye
aberration measurement by using Hartmann-Shack wavefront sensor has been studied. The principle of Hartmann-Shack
wavefront sensor has been introduced. The diopter curve corresponding to the installation errors of lens has been
calculated. And the according curve reveals that the diopter of illumination beam at the section of entrance pupil is quite
sensitive to the installation errors of lens. The impact on wavefront at the exit pupil under the illumination of
uncollimated beam has been analyzed and relative experiments have been done. The experiments show seldom impact of
it. Quantitative relationship between the precision of ocular aberration measurement and installation errors of lens is
proposed. Experiments to quantitatively simulate the installation errors have been done. The experimental results are in
accordance with the theoretical analysis we made and the collimation of illumination beam has an obvious and direct
influence on the measurement precision of ocular aberration.
Jiajie Wu,Jiabi Chen,Ancheng Xu, andXiaoyan Gao
"Uncollimated light beam illumination during the ocular aberration
detection and its impact on the measurement accuracy by using
Hartmann-Shack wavefront sensor", Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 75080V (23 November 2009); https://doi.org/10.1117/12.837581
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Jiajie Wu, Jiabi Chen, Ancheng Xu, Xiaoyan Gao, "Uncollimated light beam illumination during the ocular aberration detection and its impact on the measurement accuracy by using Hartmann-Shack wavefront sensor," Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 75080V (23 November 2009); https://doi.org/10.1117/12.837581