IEC TR 63145-202-40:2026 PDF

Name: IEC TR 63145-202-40:2026 — Eyewear display - Part 202-40: General information of AR type - Frontal stray lights
SKU: IEC TR 63145-202-40:2026
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Eyewear display - Part 202-40: General information of AR type - Frontal stray lights

Название (английский):

IEC TR 63145-202-40:2026

Eyewear display - Part 202-40: General information of AR type - Frontal stray lights

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 12 февраля 2026 г.
Издание:: IEC TR 63145 edition 1 version 1
ICS:: 17.180.99

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Описание (английский):

IEC TR 63145-202-40:2026 provides general information for frontal stray light from optical see-through augmented reality (AR) displays and offers guidance on how to evaluate it. It includes overview of the technology, categorization of the phenomenon, and optical characteristics.

Abstract

Overview

Key Topics

Optical See-Through Combiner Technologies

Half-tone combiners: Utilize semi-transparent coatings to balance reflection and transmission, commonly used in bug-eye and birdbath optics.
Polarization combiners: Rely on orthogonal polarization to combine real-world and virtual images with minimal luminance loss, ideal for polarized display engines like LCD and LCOS.
Wavelength-selective combiners: Use diffractive or holographic elements (DOE/HOE) to reflect specific light wavelengths, enabling selective virtual image display.
Spatial half-tone combiners: Employ spatially separated mirrors to simultaneously render both real and virtual scenes, adjusting brightness ratio by their proportion.

Frontal Stray Light Phenomenon

The document categorizes frontal stray light in AR eyewear into five types:

Frontal surface reflection: Reflection of ambient light at the device’s outer surface, observed regardless of device activity.
Direct transmission: Virtual image leak from the display engine, visible externally when the device is on.
Facial reflection: Reflection of virtual images off the user’s face or eyes.
Frontal diffraction: Unintended light directed outwards due to symmetrical diffraction in DOE/HOE-based optics.
Frontal reflection: Mirror-like reflection of virtual images away from the user’s eye-box, typical in birdbath optics.

Methods to Reduce Frontal Stray Light

Anti-reflection coatings: Minimize surface reflections on both optical and mechanical parts.
Angle adjustment: Redirect stray light by tilting or wrapping the optics, though this does not reduce the light itself.
Optical filtering: Use polarization or spectral filters to block unwanted light while maintaining transparency.

Evaluation Considerations

Recommendations for environmental conditions (e.g., dark room measurements) to ensure consistent evaluation.
Utilization of light measuring devices (LMD) placed at standardized distances and angles to assess luminance and area of stray light.
Social acceptance metrics-such as maximum stray light luminance and size-as well as privacy assessment via modulation transfer function (MTF) analysis.

Applications

IEC TR 63145-202-40:2026 is valuable for a range of applications:

AR device design and manufacturing: Guides designers in minimizing visible stray light, improving user comfort, privacy, and social acceptance.
Product testing and evaluation: Provides methodologies for reliably measuring and comparing frontal stray light between AR devices.
Compliance and quality assurance: Supports industry professionals in meeting current international standards and expectations for augmented reality eyewear.
Privacy-sensitive environments: Offers guidelines to assess and mitigate privacy risks posed by visible virtual images projected towards onlookers or bystanders.

Related Standards

For a holistic approach to eyewear display evaluation, the following IEC standards offer complementary guidance:

IEC 63145-1-2 - Eyewear display - Part 1-2: Generic - Terminology
IEC 62977-2-1 - Electronic displays - Part 2-1: Fundamental measurements of optical characteristics
IEC TR 62977-2-5 - Electronic display devices - Transparent displays optical measurements
IEC 62715-5-1 - Flexible display devices - Measuring methods of optical performance

By following IEC TR 63145-202-40:2026, stakeholders can effectively evaluate and mitigate frontal stray light in AR eyewear, enhancing both user safety and industry-wide confidence in augmented reality technologies.

Технические детали

Технический комитет: TC 110 - Electronic displays
SKU: IEC TR 63145-202-40:2026

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Каталог

BS IEC 63145-1-2:2022

Действующий

Eyewear display - Generic. Terminology

1 Scope This part of IEC 63145 provides terms that are used in the field of eyewear displays for augmented reality, virtual-reality, mixed reality, and the image or video rendering on these displays.

PDF

50 €

BS IEC 62977-2-11:2023

Действующий

Electronic displays - Measurement of optical characteristics. Local luminance and uniformity

PDF

50 €

BS IEC 62715-5-1:2017

Действующий

Flexible display devices - Measuring methods of optical performance

What is BS IEC 62715‑5‑1 – Optical performance of flexible display devices about ? BS IEC 62715‑5‑1 is an international standard that discusses flexible display devices. BS IEC 62715‑5‑1 is the fifth…

PDF

50 €

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IEC TR 63145-202-40:2026 PDF

Abstract

Overview

Похожие стандарты

Key Topics

Optical See-Through Combiner Technologies

Frontal Stray Light Phenomenon

Methods to Reduce Frontal Stray Light

Evaluation Considerations

Applications

Related Standards

Технические детали

BS IEC 63145-1-2:2022

Eyewear display - Generic. Terminology

BS IEC 62977-2-11:2023

Electronic displays - Measurement of optical characteristics. Local luminance and uniformity

BS IEC 62715-5-1:2017

Flexible display devices - Measuring methods of optical performance