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Proceedings Paper

Wave optics analysis of corner-cube retro-reflectors in near-to-eye displays based on scanning laser projectors
Author(s): Seyedmahdi Kazempourradi; Erdem Ulusoy; Sven Holmstrom; Hakan Urey
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Paper Abstract

In near to eye displays based on scanning laser projectors, retro-reflectors seem as convenient image relay components since they can ideally be placed at any location on the scanned beam path. In case of practical retro reflectors though, such as corner cube retro-reflectors (CCRs), the relayed image suffers from loss in quality and resolution due to the positional shift in the retro-reflected rays and the diffraction effects. We perform a wave optics simulation to analyze the image relay performance of a CCR. Our model assumes that the scanned spot of the projector is imaged by the CCR into an array of spots, which superpose and interfere to yield the effective scan spot seen by an eye looking at the CCR. The results indicate that the CCR results in a significant broadened spot size. Experimental results verify the simulation model in terms of achievable resolution and image quality.

Paper Details

Date Published: 23 September 2015
PDF: 8 pages
Proc. SPIE 9630, Optical Systems Design 2015: Computational Optics, 96300K (23 September 2015); doi: 10.1117/12.2191355
Show Author Affiliations
Seyedmahdi Kazempourradi, Koç Univ. (Turkey)
Erdem Ulusoy, Koç Univ. (Turkey)
Sven Holmstrom, Koç Univ. (Turkey)
Hakan Urey, Koç Univ. (Turkey)


Published in SPIE Proceedings Vol. 9630:
Optical Systems Design 2015: Computational Optics
Daniel G. Smith; Frank Wyrowski; Andreas Erdmann, Editor(s)

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