Metrology of injection molded polymer optics for a commercial VR system

Matthew Kyrish; Jeanette Miller; Margaret Fraelich; Oscar Lechuga; Richard Claytor; Nelson Claytor

doi:10.1117/12.2325018

14 September 2018 Metrology of injection molded polymer optics for a commercial VR system

Matthew Kyrish, Jeanette Miller, Margaret Fraelich, Oscar Lechuga, Richard Claytor, Nelson Claytor

Proceedings Volume 10742, Optical Manufacturing and Testing XII; 1074213 (2018) https://doi.org/10.1117/12.2325018
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

Matthew Kyrish, Jeanette Miller, Margaret Fraelich, Oscar Lechuga, Richard Claytor, and Nelson Claytor "Metrology of injection molded polymer optics for a commercial VR system", Proc. SPIE 10742, Optical Manufacturing and Testing XII, 1074213 (14 September 2018); https://doi.org/10.1117/12.2325018

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