IEC 62906-5-1-2021 PDF

Full title and description

IEC 62906-5-1:2021 — Laser displays — Part 5-1: Measurement of optical performance for laser front projection. This international standard defines standardized measurement conditions and methods for evaluating the optical performance of front‑projection displays that use lasers or laser‑hybrid light sources, covering full‑frame projection technologies such as DMD, LCOS and LCD projectors (excludes raster‑scanned/flying‑spot projectors).

Abstract

IEC 62906-5-1:2021 specifies environmental, instrument and dark‑room conditions; projector setup and alignment; required measurement equipment (illuminance meters, colourimeters, spectroradiometers, integrating spheres and reflectance standards); and measurement methods for key optical metrics including light output, spectral/spectroradiometric data, illuminance uniformity, contrast ratio, chromaticity, greyscale behavior and colour gamut metrics for laser front projection systems. The document also provides recommended test patterns, sampling locations and data‑processing procedures for repeatable, comparable results.

General information

• Status: Published / Current.
• Publication date: 10 November 2021 (ed. 1.0).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 31.260 — Optoelectronics; laser equipment.
• Edition / version: Edition 1.0 (2021).
• Number of pages: 68 (main IEC edition).

Key bibliographic facts above are reported in the IEC publication record and official national adoptions.

Scope

This part of IEC 62906 applies to measurement of optical performance for front‑projection laser displays when projecting onto a surface without a dedicated projection screen (front projection without screen). It covers full‑frame projection architectures (DMD, LCOS, transmissive/reflective LCD) using pure‑laser or laser‑hybrid light engines. The standard excludes raster‑scanned (flying‑spot) laser projectors and focuses on repeatable laboratory measurement procedures and reporting for photometric, colorimetric and spectral characteristics.

Key topics and requirements

• Standard measuring conditions: environmental, dark‑room and instrument calibration requirements to ensure repeatability.
• Projector setup: placement, focusing, image plane definition, measurement coordinate systems and alignment procedures.
• Measurement equipment specifications: minimum performance and calibration guidance for illuminance meters, spectroradiometers, colourimeters and integrating spheres.
• Optical performance tests: procedures for measuring light output (white and colour signal methods), spectral radiometry, illuminance uniformity, contrast ratio, chromaticity coordinates, greyscale behaviour and chromaticity stability.
• Colour metrics and gamut reporting: sampling strategies, chromaticity gamut area/volume calculations, and recommended reporting formats and test patterns (including RGB/CYMCMY tiles and multi‑colour test patterns referenced from related TRs).
• Data analysis and reporting: algorithms for tessellation/sampling, data reduction, and example annexes that define reporting templates and calculation steps.

These technical requirements and test methods are described in detail in the normative text and annexes.

Typical use and users

Primary users are projector and laser display manufacturers, R&D and characterization laboratories, conformity assessment and test houses, systems integrators evaluating front‑projection performance, and standards/technical committees developing display measurement procedures. The standard is used to produce repeatable, comparable performance data for product development, datasheets, benchmarking and certification.

Related standards

IEC 62906‑5‑1 is part of the IEC 62906 family for laser display devices. Closely related documents include IEC 62906‑5‑2 (speckle contrast measurement methods), IEC 62906‑5‑3 (image quality methods for laser projection), IEC 62906‑5‑4 (colour speckle methods and corrigenda), and vocabulary/letter‑symbol parts such as IEC 62906‑1‑2. Normative references also include IEC TR 62977‑2‑3 (multi‑colour test patterns) and safety and projection measurement standards such as IEC 60825‑1 and established projector measurement documents (e.g., IEC 61947‑1 series). These related parts provide complementary measurement techniques and terminology.

Keywords

Laser displays, front projection, optical performance, measurement methods, spectroradiometry, illuminance uniformity, contrast ratio, chromaticity, colour gamut, speckle, DMD, LCOS, LCD, IEC 62906.

FAQ

Q: What is this standard?

A: IEC 62906‑5‑1:2021 is an international standard that defines how to measure and report optical performance for laser front‑projection display systems (full‑frame projectors using laser or laser‑hybrid light sources).

Q: What does it cover?

A: It covers laboratory measurement conditions, equipment specifications, projector setup and step‑by‑step measurement methods for metrics such as light output, spectral data, illuminance uniformity, contrast, chromaticity and colour‑gamut calculations; it excludes raster‑scanned/flying‑spot projectors.

Q: Who typically uses it?

A: Manufacturers, test laboratories, R&D engineers, integrators and conformity assessment bodies that need repeatable, comparable optical performance results for laser front‑projection products.

Q: Is it current or superseded?

A: As published by IEC in November 2021 (edition 1.0), IEC 62906‑5‑1:2021 is the current edition; consult the IEC webstore or national standards bodies for any subsequent amendments or corrigenda and for national adoptions.

Q: Is it part of a series?

A: Yes — it is part of the IEC 62906 series for laser display devices (multiple Part 5 sub‑parts addressing speckle, image quality, colour speckle, etc.) and references related vocabulary and technical reports in the IEC 62906/62977 families.

Q: What are the key keywords?

A: Laser displays; front projection; measurement; optical performance; speckle; spectroradiometry; colour gamut; illuminance uniformity; chromaticity; DMD; LCOS; LCD.