IEC 62906-5-2:2016

Name: IEC 62906-5-2:2016 — Laser display devices - Part 5-2: Optical measuring methods of speckle contrast
SKU: IEC 62906-5-2:2016
Price: 37800 RUB
Availability: InStock

Laser display devices - Part 5-2: Optical measuring methods of speckle contrast

Название (английский):

IEC 62906-5-2:2016

Laser display devices - Part 5-2: Optical measuring methods of speckle contrast

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 21
Дата публикации:: 7 июня 2016 г.
Издание:: IEC IS 62906 edition 1 version 1
ICS:: 31.260

Тип поставки:

Full version37 800 ₽Read online 24h1 200 ₽Read online 72h1 800 ₽

Язык документа:

ruen

Срок поставки:4 раб. дн. (перевод)

Цена:37 800 ₽

Описание (английский):

IEC 62906-5-2:2016(E) specifies the standard measurement conditions and measurement methods for determining the monochromatic speckle contrast of laser display devices (LDDs). The LDDs may include hybrid types using both a laser or lasers, and spontaneous emission-based light sources, such as LEDs. NOTE: The monochromatic speckle contrast measurements do not include image quality issues.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

IEC 62906-5-2:2016 - "Laser display devices - Part 5-2: Optical measuring methods of speckle contrast" specifies standardized measurement conditions and methods for determining the monochromatic speckle contrast of laser display devices (LDDs). The standard covers LDDs including hybrid systems that combine laser(s) and spontaneous-emission light sources (e.g., LEDs). Note: these speckle contrast measurements are focused on optical speckle metrics and do not address general image quality.

Key technical topics and requirements

Scope and purpose

Defines how to measure monochromatic speckle contrast for LDDs (front and rear projection geometries).
Applies to hybrid systems containing laser diodes (LD) and LEDs.

Standard measurement environment

Temperature: 25 °C ± 3 °C
Relative humidity: 25 % to 85 %
Atmospheric pressure: 86 kPa to 106 kPa

Darkroom and background limits

Background illumination reflected from the device under test (DUT) must be ≤ 1/20 of the display’s lowest black level; otherwise background subtraction is required and must be reported.

Measurement geometry and coordinate system

Defines projection and viewing directions using inclination (θ) and azimuth (φ) angles; includes guidance for front and rear projection setups.

Measuring equipment and procedures

Use of a light measuring device (LMD) to simulate the observer; recommendations on sensor pixel size and measurement conditions are provided (see informative Annex B).
Calibration and diagnostic procedures for determining highest and lowest speckle contrast values (C).

Safety and normative references

Measurements must comply with laser safety requirements (IEC 60825-1).
Terminology aligned with IEC 62906-1-2.

Informative annexes

Spectral behavior of laser diodes, sensor pixel-size recommendations, theoretical speckle formulation and common error sources.

Practical applications and users

Display manufacturers developing laser and laser-hybrid projection systems who need repeatable speckle metrics.

Test laboratories and QA teams performing standardized speckle characterization and certification testing.

R&D engineers evaluating speckle mitigation techniques (e.g., spatial/temporal decorrelation).

System integrators and product managers assessing perceived speckle risk in projection products and compliance with industry measurement practice. Practical uses:

Benchmarking speckle performance across prototypes and production units.

Verifying effectiveness of speckle-reduction solutions and optical designs.

Producing reproducible measurement reports for suppliers and customers.

Related standards

IEC 60825-1 - Safety of laser products (equipment classification and requirements)

IEC 62906-1-2 - Laser display devices - Vocabulary and letter symbols

Keywords: IEC 62906-5-2, laser display devices, speckle contrast, monochromatic speckle, LDD, laser diode (LD), LMD, front projection, rear projection, speckle measurement, darkroom conditions.

IEC 62906-5-2:2016

Abstract

Похожие стандарты

Overview

Key technical topics and requirements

Practical applications and users

Related standards

Технические детали

PD IEC TR 60825-5:2019

Safety of laser products - Manufacturer’s checklist for IEC 60825-1

IEC 62906-1-2:2015

Laser display devices - Part 1-2: Vocabulary and letter symbols

BS IEC 62906-5-2:2016

Laser display devices - Optical measuring methods of speckle contrast