GB/T 39771.1-2021Optical radiation safety of LEDs—Part 1: Safety requirements and classification (English PDF)

Foreword

GB/T 39771 "Semiconductor Light-Emitting Diode Optical Radiation Safety" is divided into 2 parts.

---Part 1: Requirements and classification methods;

---Part 2: Test method. This part is Part 1 of GB/T 39771.

This section was drafted in accordance with the rules given in GB/T 1.1-2009.

Introduction

High-brightness (radiance) semiconductor light-emitting diodes have been widely used in lighting, display and other consumer electronic products, and their optical radiation The impact on human health is one of the product safety issues.

This section mainly considers semiconductor light-emitting diodes with light radiation wavelengths in the near ultraviolet and visible light regions. The possible light radiation hazards are Ultraviolet hazards of eyes and skin, near-ultraviolet eye hazards, retinal blue light hazards and retinal heat hazards. At present, semiconductor light-emitting diodes The retinal heat hazard is not obvious, and it is temporarily out of the scope of this section.

The blue light hazard of the retina is related to the absorption of short-wavelength blue and violet light by the cornea and lens of the eye.

External filtering effect, the main damage to the retina is blue light radiation. For infants, intraocular lenses (related to the cut-off wavelength) and people with aphakia In some cases, some ultraviolet radiation may be directly irradiated to the retina. This section is recommended as a lens for consideration, see Appendix A.

Due to the potential impact of long-term use of semiconductor light-emitting diodes on human health, the relevant situation is still under study.

1 Scope

This part of GB/T 39771 specifies the optical radiation safety requirements and hazard levels of semiconductor light-emitting diodes (hereinafter referred to as LED) Class method.

This section applies to single-chip or multi-chip LEDs with light radiation wavelengths in the near-ultraviolet and visible regions (300nm~780nm).

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 20145-2006 Photobiological safety of lamps and lamp systems

GB/T 30117.2-2013 Photobiological safety of lamps and lamp systems Part 2: Non-laser optical radiation safety related manufacturing requirements guide

SJ/T 11395-2009 Semiconductor Lighting Terminology

3 Terms and definitions

GB/T 20145-2006, GB/T 30117.2-2013 and SJ/T 11395-2009 defined and the following terms and definitions apply In this document.