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Proceedings Paper

Metrology of injection molded polymer optics for a commercial VR system
Author(s): Matthew Kyrish; Jeanette Miller; Margaret Fraelich; Oscar Lechuga; Richard Claytor; Nelson Claytor
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Paper Abstract

Virtual reality and augmented reality devices require increasingly demanding optical components. Head mounted displays for VR systems often use molded Fresnel lenses, which can be affordably mass produced, maintain low weight, and still achieve high optical performance. Here, we describe an optical system designed for a wide field-of-view, consumer VR headset. Custom tooling was fabricated via diamond turning in order to injection mold the acrylic lenses. Each optical channel is composed of two lenses. The lenses have a spherical-convex surface and an aspheric-convex Fresnel on a spherical-concave surface; the radii of the spherical surfaces differ between the two lenses. Each lens pair relays the image from a compatible smartphone to the eye. To assess the quality of the lenses, the surface finish and surface profiles were measured using a white light interferometer and a contact profilometer, respectively. The lenses were assembled into a custom headset, and their performance was demonstrated via commercial VR software.

Paper Details

Date Published: 14 September 2018
PDF: 8 pages
Proc. SPIE 10742, Optical Manufacturing and Testing XII, 1074213 (14 September 2018); doi: 10.1117/12.2325018
Show Author Affiliations
Matthew Kyrish, Fresnel Technologies Inc. (United States)
Jeanette Miller, Fresnel Technologies Inc. (United States)
Margaret Fraelich, Fresnel Technologies Inc. (United States)
Oscar Lechuga, Fresnel Technologies Inc. (United States)
Richard Claytor, Fresnel Technologies Inc. (United States)
Nelson Claytor, Fresnel Technologies Inc. (United States)

Published in SPIE Proceedings Vol. 10742:
Optical Manufacturing and Testing XII
Ray Williamson; Dae Wook Kim; Rolf Rascher, Editor(s)

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