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[Editor's Pick] Current Optics and Photonics Vol. 6 no. 4 (2022 August)

사무국 hit 951 date 2022-08-25

A New Instrument for Measuring the Optical Properties of Wide-field-of-view Virtual-reality Devices

Hee Kyung Ahn1, Hyun Kyoon Lim2, and Pilseong Kang1 *

 

Current Optics and Photonics  Vol. 6 No. 4 (2022 August) pp. 392-399
DOI: https://doi.org/10.3807/COPP.2022.6.4.392

 

 

The structure of a typical light-measuring devices (LMD) for virtual-reality/augmented-reality (VR/AR) devices.

  Fig. 1  The structure of a typical light-measuring devices (LMD) for virtual-reality/augmented-reality (VR/AR) devices.

 

Keywords: Augmented Reality, Spectroradiometer, Virtual Reality
OCIS codes: (120.2040) Displays; (120.5240) Photometry


Abstract
ght-measuring devices (LMDs) are frequently used to measure luminance and color coordinates of displays. However, it is very difficult to use a conventional LMD for measuring the optical properties of virtual-reality (VR) devices with a wide field of view (FOV), because of their confined spaces where the entrance pupil of a LMD is located. In this paper, a new LMD that can measure the optical properties of wide-FOV VR devices, without physical conflict with the goggles of the VR device, is proposed. The LMD is designed to fully satisfy the requirements of IEC 63145-20-10, and a pivot-point correction method for the LMD is applied to improve its accuracy. To show the feasibility of the developed LMD and the correction method, seven VR devices with wide FOV are measured with it. From the results, all of them are successfully measured without any physical conflict, and a comparison to their nominal values shows that the FOVs have been properly measured.