The study of correction for chromatic aberrations of human eye with diffractive–refractive hybrid elements |
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Authors: | Mei Zhang Zhao-Qi Wang Yan Wang Tong Zuo |
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Institution: | aKey Laboratory of Opto-electronic information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, PR China;bTianjin Eye Hospital, Refractive surgery Center, Tianjin 300020, PR China |
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Abstract: | A chromatic corrector with two refractive–diffractive hybrid elements is designed over a reasonable wide field-of-view of 7° to correct the chromatic aberrations of human eye. We investigate the performance of the corrector using several optical criteria in a comparison with the chromatic corrector with single refractive–diffractive element. Both the correctors can correct the longitudinal chromatic aberration (LCA) fairly. It is demonstrated that the chromatic corrector with single element introduces serious eccentric transverse chromatic aberration (TCA), which deteriorates the image quality at the edge field-of-view. On using the chromatic corrector with two refractive–diffractive elements, not only the LCA but also the TCA can be corrected very well. The designed chromatic corrector can be used to improve the retinal image quality and has potential application in the design of visual instruments. |
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Keywords: | Chromatic aberration corrector Chromatic wavefront aberration Wide-angle schematic eye model |
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