Correction of chromatic aberration for human eyes with diffractive-refractive hybrid elements

Μέγεθος: px

Εμφάνιση ξεκινά από τη σελίδα:

Download "Correction of chromatic aberration for human eyes with diffractive-refractive hybrid elements"

Μαία Λάχεσις Καζαντζής
5 χρόνια πριν
Προβολές:

1 Chinese Optics Vol. 5 No. 5 Oct * μm μm μm / O TH703 A doi /CO Correction of chromatic aberration for human eyes with diffractive-refractive hybrid elements ZHANG Mei * GENG Zheng State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China * Corresponding author changenk@ 163. com Abstract A chromatic corrector with two refractive-diffractive hybrid elements is designed for a wide field-ofview of 14 to correct chromatic aberrations in human eyes. The performance of the corrector based on several optical criteria is compared with a chromatic corrector with single refractive-diffractive element. Results show that both correctors can correct for Longitudinal Chromatic Aberration LCA. However it is demonstrated that the chromatic corrector with a single element introduces serious eccentric Transverse Chromatic Aberration TCA that increases from μm to μm. This deteriorates the image quality at the edge field-ofview. On the chromatic corrector with two refractive-diffractive elements both the LCA and the TCA can be corrected and the TCA is just μm. The designed chromatic corrector can be used to improve the retinal No. 2012AA011903

2 526 5 image quality and has potential applications in the design of visual instruments. Key words chromatic aberration corrector wavefront chromatic aberration wide-angle schematic eye model diffractive-refractive hybrid element 1 J. A. Díaz / 4-6 L. N. Thibos 2 m - 1 R. Navarro I. Escudero-Sanz 12 / R. Navarro / 2 3 ZEMAX A. C. S. Van Heel RMS nm nm A. L. Lewis 54 mm Navarro L. Powell Y. Benny R. Navarro -

3 5-527 Tab. 1 1 Navarro nm Geometrical parameters and refractive indexes for Navarro wide-angle eye model nm /mm /mm Navarro ~ 700 nm 4 mm 1 a 1 b 1 c RMS 1 a 420 ~ 700 nm μm xx' = ff' 1 x x' f f' 555 nm x' f f' μm mm mm x m m b μm 1 c RMS μm 3 Fig. 1 1 Navarro Optical properties for wide-angle schematic eye nm model over visible spectrum ZEMAX

4 mm 1 2 / 3 14 / 1 15 mm 3 Navarro / Fig. 3 Layout of corrector with two refractive-diffractive 2 elements and wide-angle eye model Zemax φ r = - A 1 r 2 + A 2 r 4 + A 3 r r A 1 A 2 A 3 RMS 3 A 1 A Fig. 2 Navarro / Layout of corrector with single refractive-diffractive element and wide-angle eye model / 1 5 mm 4 / / Fig. 4 Curves of the chromatic focal shift of the optical systems with single refractive-diffractive element and two refractive-diffractive elements 2

5 a 4 4 a / μm 5 b 4 b / 4 a μm μm m b / μm m m - 1 ZEMAX / RMS a / RMS 6 a 5 b / / 6 b 5 Fig. 5 / 6 / RMS Curves of lateral chromatic aberration of the optical Fig. 6 Polychromatic RMS spot radii of the optical sysement systems with single refractive-diffractive eltems with single refractive-diffractive element and two refractive-diffractive elements and with two refractive-diffractive elements

6 530 5 / RMS 5. 3 μm μm μm 1 c 5 / 7. 1 μm Navarro / μm μm 5 / / 1 THIBOS L N BRADLEY A ZHANG X. The effect of ocular chromatic aberration on monocular visual performance J. Optom. Vis. Sci THIBOS L N YE M ZHANG X X et al.. The chromatic eye a new reduced-eye model of ocular chromatic aberration in humans J. Appl. Opt MEETEREN A V W C J UNNEWOLD D. Image quality of the human eye for eccentric entrance pupils J. Vis. Res BEDFORD R E WYSZECKI G. Axial chromatic aberration of the human eye J. J. Opt. Soc. Am THIBOS L N BRADLEY A STILL D L et al.. Theory and measurement of ocular chromatic aberration J. Vis. Res RYNDERS M LIDKEA B CHISHOLM W et al.. Statistical distribution of foveal transverse chromatic aberration pupil centration and angle psi in a population of young adult eyes J. J. Opt. Soc. Am. A van HEEL A C S. Correcting the spherical and chromatic aberrations of the eye J. J. Opt. Soc. Am. A LEWIS A L KATZ M OEHRLEIN C. A modified achromatizing lens J. Am. J. Optom. Physiol. Opt POWELL I. Lenses for correcting chromatic aberration of the eye J. Appl. Opt BENNY Y MANZANERA S PRIETO P M et al.. Wide-angle chromatic aberration corrector for the human eye J. J. Opt. Soc. Am. A DIAZ J A IRLBAUER M MARTINEZ J A. Diffractive-refractive hybrid doublet to achromatize the human eye J. J. Mod. Opt ISABEL E NAVARRO R. Off-axis aberrations of a wide-angle schematic eye model J. J. Opt. Soc. Am changenk@ 163. com

Σχετικά έγγραφα

TABLE OF CONTENTS CHAPTER 1- INTRODUCTION: 1. Motivation of the study... 1. 2. The crystalline lens and the accommodative system.

TABLE OF CONTENTS CHAPTER 1- INTRODUCTION: 1. Motivation of the study... 1 2. The crystalline lens and the accommodative system. 2.1 Human and primate crystalline lens... 4 2.1.1. Human Crystalline lens.