Exploring the Polarization Ellipse of Partially Coherent Light Beams Passing Through Human Eye Lens

INTERNATIONAL DUMLUPINAR SCIENCE AND MATHEMATICS CONGRESS, Kütahya, Türkiye, 5 - 07 Eylül 2022, ss.98-99

Abstract

Aim: To present, numerically, the change in the polarization ellipse of partially coherent light beams

during the course of interaction with the crystalline human eye lens. A drastic change will be shown in

the ellipse of random light beams during their propagation in the human eye.

Materials and methods: In this section, there are three main parts; ABCD matrix elements of the lens,

cross-spectral density matrix of the light beam, and polarization parameters in the beam through

propagation. After the initial study of the crystalline human eye lens’ response to stochastic light, it is

now possible to analyze the interaction of any type of light with the eye lens. Also, the light that enters

the eye is broadband and has a range of coherence values from incoherent to fully coherent. On that

account, by using the tools of diffraction theory of optics together with the ray tracing methods, I observe

the variation in the polarization ellipse of partially coherent light passing through the human eye lens.

Results: A directional un-polarized random light of cross-sectional radius ~0,3 mm is sent numerically

to the lens surface which resides at the minimum possible pupil radius of ~0,5 mm. And, the propagation

is analyzed in 17 mm after the lens which is the typical length of vitreous humor. A change in the

polarization ellipse of the incident light (having a Gaussian profile) is detected and shown in numerical

plots.

Conclusion: I’ve found that the correlation effects of almost natural light on the gradient index human

eye lens causes a polarization ellipse change during propagation.

Keywords: Polarization; Human Eye; Human Eye Lens; Partially Coherent Light