IEC 62471 is an international standard on photobiological safety of lamps and lamp systems developed by the International Electrotechnical Commission (IEC). Its European version is EN 62471, and the equivalent standard adopted in China is GB/T 20145-2006. This standard aims to assess the optical radiation hazards that light sources may pose to human eyes and skin, and is widely used in the safety evaluation of LED lighting, display equipment, luminaires, and other non-laser light source products.
① FULl Standard Name: IEC/EN 62471 Photobiological Safety of Lamps and Lamp Systems
② Scope: Applicable to all lamps and lamp systems except lasers, including LED lamps, fluorescent lamps, halogen lamps, projectors, display screens, automotive lamps, etc.
③ Wavelength Range: Covers 200 nm to 3000 nm, including ultraviolet (UV), visible light, and infraRED (IR) bands.
④ Core Purpose: Replaces the laser class requirements for LED products in the old standard IEC/EN 60825 and introduces a more comprehensive photobiological safety evaluation system.
⑤ Implementation Status:
a. EU standard EN 62471:2008 has been mandatory since September 1, 2009.
b. The provisions of iec 60825 related to LEDs have been invalidated.
The standard assesses the following 8 categories of photobiological hazards by measuring parameters such as irradiance (W/m²) and radiance (W/m²·sr):
Test Item | Wavelength Range | Hazard Target | Description |
1. Ultraviolet hazard to skin and eyes | 200–400 nm | Skin, cornea, lens | Long-term exposure may cause sunburn and cataracts |
2. Near-ultraviolet hazard to eyes (UVA) | 315–400 nm | Retina | May cause photocheMICal damage to the retina |
3. Retinal blue light hazard | 300–700 nm | Retina | Blue light (400–500 nm) easily induces oxidative damage to the retina |
4. Retinal blue light hazard (small sources) | 300–700 nm | Retina | For small-area high-brightness light sources (e.g., LED point sources), with stricter assessment |
5. Retinal thermal hazard | 380–1400 nm | Retina | Strong light causes local temperature rise, resulting in thermal damage |
6. Retinal thermal hazard (weak visual stimulus) | 780–1400 nm | Retina | Vision is insensitive under infrared light, but thermal effects still exist |
7. Infrared radiation hazard to eyes | 780–3000 nm | Lens, cornea | Long-term exposure may cause "glassblower’s cataract" |
8. Skin thermal hazard | 380–3000 nm | Skin | High-intensity radiation causes skin burns |
IEC 62471 Test Report
According to test results, products are classified into four risk groups:
Grade | Name | Safety Description |
RG0 | Exempt | No hazard, safe under all conditions |
RG1 | Low Risk | No risk under normal use; may be harmful after prolonged direct viewing |
RG2 | Moderate Risk | Do not look directly with naked eyes; may be harmful even after short exposure |
RG3 | High Risk | May cause injury even with instantaneous exposure; strict protection required |
Note: Most consumer lighting products should meet RG0 or RG1 level.
IEC 62471 test reports are usually issued by third-party testing organizations. The process is as follows:
Contact a qualified testing organization to confirm the test standard (IEC/EN/GB), test items, and fees.
a. Product manual or user guide
b. Product model difference list (for multiple models)
c. List of key components (e.g., LED chips, lenses, driver power supplies)
d. PCB design drawings (front and back sides)
e. Application form (provided by the testing organization)
f. Test samples: Generally 1–2 sets of complete finished products.
Send the samples and documents to the JJR laboratory.
Measurements are performed in a dark room using calibrated spectroradiometers at a specified distance (usually 200 mm or calculated based on light source size).
Irradiance and radiance are tested, and hazard values for each band are calculated.
a. Testing period: 5–7 working days (ordinary products); may be extended for complex products.
b. Report content includes: test parameters, results, hazard group judgment, compliance with the standard, etc.
After the report is approved, the organization issues a formal IEC 62471 test report (with CMA, CNAS and other qualification stamps, depending on usage).
No. IEC/EN 62471 is a product type test, which is only responsible for the submitted samples and does not involve factory audit.
All non-laser light source products, especially:
① LED luminaires (bulbs, downlights, panel lights, etc.)
② Display screens (LED large screens, Mini/Micro LED)
③ Automotive lighting (headlights, ambient lights)
④ Medical lighting (surgical lamps, dental lamps)
⑤ Consumer electronics (mobile phone flashlights, projectors)
① IEC 62471: A comprehensive photobiological safety test standard including multi-band hazard assessment.
② IEC/TR 62778: A supplement to IEC 62471, dedicated to assessing the blue light hazard of LED light sources. It quickly judges the risk level based on light source spectral data and is often used for pre-evaluation during product design.
If you have IEC 62471 testing requirements, please consult our professional testing engineers for more detailed information!
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