K9(BK7) has excellent mechanical properties and very low bubble K9(b270) product drawing and impurit...
B270 Colorless Optical Glass is a high-performance optical glass widely used in optical systems due to its exceptional optical transparency and low dispersion characteristics. It is a colorless, transparent material with a uniform refractive index and good machinability, making it suitable for the production of precision optical components. B270 glass is commonly used in high-end camera lenses, telescopes, microscopes, and other high-precision optical equipment.
Technical Specifications
| Number | Thickness(mm) | λij(nm) | λ0(nm) | Tλ0(%) | K |
| B270 |
1-5 |
310±10 | 400 | ≥89.5 | ≥1.0 |
Spectrogram

As a leading manufacturer in the Yangtze River Delta Integrated Demonstration Zone (Jiashan, Zhejiang), Jiangnan Outdoor has been awarded "National High-Tech Enterprise" and "Jiaxing Green Factory" titles, with full certifications in ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 international standards.
Colorless optical glass is used across a remarkably wide range of industries — from precision scientific instruments and medical imaging systems to consumer cameras, defense optics, and architectural...
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