65‐3: Spectroradiometric Measurements of Near‐Eye and Head Up Displays

Austin, Richard L.; Drews, Brian; Vogt, T.; Fedoriouk, Victor B.; Denning, Bruce; Vachlin, Frank

doi:10.1002/sdtp.11808

Cited by 10 publications

(15 citation statements)

References 2 publications

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“…Head‐up and near‐eye display (HUD and NED, respectively) manufacturers rely on luminance, color, and uniformity measurements as essential performance evaluation criteria in the augmented reality and virtual reality display visual field of view (FOV). Recent work has been performed that defines a minimum essential set of measurement instrument optical system characteristics to assure repeatable and reproducible photometric and colorimetric measurement results . Building upon these findings, we give a method of defining the boundaries of the qualified viewing space (QVS) based on a display quality performance parameter.…”

Section: Introductionmentioning

confidence: 97%

Qualified viewing space determination of near‐eye and head‐up displays

et al. 2018

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-A method for determining the extents of a qualified viewing space (QVS) based on repeatable and reproducible luminance measurements of augmented and virtual reality near-eye displays is described. This QVS mapping can also use other display performance metrics such as (1) Michelson contrast, (2) modulation transfer function, or (3) color as boundary condition parameters. We describe the use of a 4-mm-diameter entrance pupil, 1°to 2°field of view tele-spectroradiometer, to determine the luminance and color uniformity of the virtual image. A 1-mm-diameter entrance pupil is used to map the QVS boundaries based on luminance at the center of the virtual image. The luminance measurement results from a pair of binocular augmented reality display glasses in three separate eye relief planes of the QVS of both eyes are presented. The data are further reduced to provide a perimeter profile of the QVS for the 50% of peak luminance boundary points in each eye relief plane.

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Section: Introductionmentioning

confidence: 97%

Qualified viewing space determination of near‐eye and head‐up displays

et al. 2018

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“…Since these measurements were averaged over the 18° measurement field compared with the center 1° of the reference data, the large red chromaticity difference may be a consequence of the virtual image non‐uniformity. Spectroradiometers with a small entrance pupil and measurement field could be used to confirm this non‐uniformity …”

Section: Resultsmentioning

confidence: 97%

Absolute radiometric and photometric measurements of near-eye displays

Penczek

Boynton²,

Meyer

et al. 2017

Jnl Soc Info Display

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-The arrival of near-eye displays has challenged the traditional methods that have been used to measure the optical properties of displays. Near-eye displays typically create virtual images and are designed for the relatively small entrance pupil of the human eye. These two attributes result in optical measurement requirements that are substantially different from traditional flat panel displays. This paper discusses the optical system requirements needed to make absolute radiometric and photometric measurements of near-eye displays. These guidelines are contrasted with the performance of current optical measurement instruments. An initial study was conducted using traditional and modified instruments and exhibited a significant variance in the results with different near-eye display designs. The study demonstrated that some traditional optical instruments can yield erroneous results when used to measure near-eye displays. Generic optical system design concepts were used to interpret the experimental results and helped to identify how current commercial designs could be modified to properly measure near-eye displays.

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“…The hardware setup we used to measure eyebox is similar with that described in [1][2] [5], where the detector is a CMOS camera (Thorlabs DCC1645C) instead of a luminance meter. The camera together with its lens is mounted on a XYZ translational stage and has an external 5-mm front aperture aligned at the exit pupil position of the device under test (DUT).…”

Section: Testing Methodsmentioning

confidence: 99%

31‐3: Eyebox Evaluation in AR/VR Near‐eye Display Testing

Li¹,

Lake²

2019

Symp Digest of Tech Papers

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The measurement of eyebox size is important in the design, manufacturing, and user experience of AR/VR near-eye display (NED) devices. Previous studies have focused on characterization of luminance and the brightness-defined eyebox. We propose to use modulation transfer function (MTF) to define contrast-based eyebox, measured with the rectangular line-pair chart at varying spatial frequencies. We find it is important to examine both brightness-based eyebox and MTF contrast-based eyebox to decide the limiting factor, which depends on the specific NED design and the displayed content.

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65‐3: Spectroradiometric Measurements of Near‐Eye and Head Up Displays

Cited by 10 publications

References 2 publications

Qualified viewing space determination of near‐eye and head‐up displays

Qualified viewing space determination of near‐eye and head‐up displays

Absolute radiometric and photometric measurements of near-eye displays

31‐3: Eyebox Evaluation in AR/VR Near‐eye Display Testing

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