BS ISO 9211-3:2024
Optics and photonics. Optical coatings - Environmental durability
- Standard No.
- BS ISO 9211-3:2024
- Release Date
- 2024
- Published By
- British Standards Institution (BSI) GB / BSI
- Latest
- BS ISO 9211-3:2024
- Introduction
Analysis of the core content of the standard
BS ISO 9211-3:2024 is an alternative version of ISO 9211-3:2008. It systematically standardizes the durability test methods of optical coatings under various environmental conditions. The standard divides the use scenarios into four standard categories AD and special category O, corresponding to different environmental severity levels.
Major Technical Changes
- Added environmental test code labeling system (Clause 4.1)
- Integrated the original Appendix A test sequence into the main text table
- Clarified the application rules of mixed test sequences for Category O
- Added the severity levels of ISO 9022-2/Amd.1 and ISO 9022-4/Amd.1
Comparative analysis of usage categories
Category Applicable scenarios Typical tests Number of samples Category A Inside the sealed device -25℃ hot and cold cycle 1 Class B Controlled environment 50 wipes + salt spray test 2 Class C Conventional outdoor 100 wipes + boiling water test 3 Class D Harsh outdoor Eraser test + salt spray 24h 4 Key test methods
1. Mechanical durability test
Including Cloth/eraser test (four levels: 50/100 wipes and 20/40 erasers) and Tape adhesion test (three methods: slow/fast/instant pull).
2. Environmental tolerance test
- Temperature cycle: -50℃~+70℃ (Class D)
- Damp heat test: 95%RH/55℃ for 16 hours (Class C)
- Salt spray corrosion: 35℃ salt spray for 24 hours (Class D)
Implementation suggestions
Drawing marking specifications
Clause 5.1 of the standard stipulates that the category code (such as "Category B") can be directly marked. Non-standard tests must be listed in a table:
| Test steps| Test code| Description| Sample| |----------|-------------------|----------------------| | 1 | ISO 9022-12-08 | Damp heat test| √ |
Precautions for the influence of substrates
Clause 4.6 of the standard specifically points out that the durability of the coating actually depends on the coating-substrate combination system. A qualified coating on a glass substrate may fail on a sensitive substrate.
Technology evolution analysis
Compared with the 2008 version, the 2024 version mainly strengthens:
- Standardized expression of test codes (Figure 1/Figure 2)
- New requirements for acetone/ethanol solvent separation tests
- Introduction of ISO 9211-5~8 related severity levels
The standard particularly emphasizes the flexible application of Category O, which can meet customized needs through the combination of "main category + special requirements" (such as "Category C; Adhesion according to Category B").
BS ISO 9211-3:2024 Referenced Document
- ISO 9022-1 Optics and photonics - Environmental test methods - Part 1: Definitions, extent of testing
- ISO 9022-2 Optics and photonics — Environmental test methods — Part 2: Cold, heat and humidity — Amendment 1
- ISO 9022-4 Optics and photonics — Environmental test methods — Part 4: Salt mist AMENDMENT 1
- ISO 9022-6 Optics and photonics - Environmental test methods - Part 6: Dust (includes Redline Version)
- ISO 9022-9 Optics and photonics - Environmental test methods - Part 9: Solar radiation and weathering
- ISO 9211-4 Optics and photonics — Optical coatings — Part 4: Specific test methods: abrasion, adhesion and resistance to water
BS ISO 9211-3:2024 history
- 2024 BS ISO 9211-3:2024 Optics and photonics. Optical coatings - Environmental durability
- 2008 BS ISO 9211-3:2008 Optics and photonics - Optical coatings - Environmental durability
- 1995 BS ISO 9211-3:1994 Optics and optical instruments. Optical coatings-Environmental durability
