Application of an optimized low-cost spatial light modulator for efficient compensation of eye aberration patterns

Vicente Durán-Bosch; Vicent Climent; Enrique Tajahuerce; Jesús Lancis; Zbigniew Jaroszewicz; Justo Arines; Salvador Bará

doi:10.1117/12.722962

9 May 2007 Application of an optimized low-cost spatial light modulator for efficient compensation of eye aberration patterns

Vicente Durán-Bosch, Vicent Climent, Enrique Tajahuerce, Jesús Lancis, Zbigniew Jaroszewicz, Justo Arines, Salvador Bará

Author Affiliations +

Proceedings Volume 6587, Liquid Crystals and Applications in Optics; 65871D (2007) https://doi.org/10.1117/12.722962
Event: International Congress on Optics and Optoelectronics, 2007, Prague, Czech Republic

Abstract

In the last years, many efforts have been devoted to use electrically addressed spatial light modulators (SLMs) in Adaptative Optics. In this contribution we have optimized a low-cost SLM based on a liquid crystal (LC) device for the compensation of eye aberrations. This kind of devices is seldom used in ophtalmic applications due to the relatively low dynamic range of the phase retardation that can be introduced at each pixel. Here, we have optimized the phase modulation response of a commercial twisted nematic liquid crystal display (TNLCD) by means of a polarimetric arrangement that includes retarder plates and polarizers. Furthermore, we describe an efficient four-level phase encoding scheme that allows us to use these conventional SLMs for the compensation of optical aberrations as those typically found in human eyes. For obtaining experimental compensation results we have used artificial aberrated eyes simulated with refractive phase plates. This proof-of-concept is the first step to develop a low-cost real-time system for the correction of eye aberrations.

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Vicente Durán-Bosch, Vicent Climent, Enrique Tajahuerce, Jesús Lancis, Zbigniew Jaroszewicz, Justo Arines, and Salvador Bará "Application of an optimized low-cost spatial light modulator for efficient compensation of eye aberration patterns", Proc. SPIE 6587, Liquid Crystals and Applications in Optics, 65871D (9 May 2007); https://doi.org/10.1117/12.722962

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KEYWORDS

Eye

Spatial light modulators

Point spread functions

Computer programming

Phase shift keying

Liquid crystals

LCDs

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