Cyan-Blue Infrared-Absorbing Glass Filters are high-performance optical filter materials specificall...
Insulating filter glass is a specially designed optical glass that provides excellent thermal insulation and optical filtering performance. It is typically used in applications requiring thermal isolation and spectral filtering, effectively blocking heat radiation and specific wavelengths of light while allowing other wavelengths to pass through. This type of glass is commonly used in optical devices, solar energy systems, architectural design, and the automotive industry, enhancing energy efficiency and protecting equipment while maintaining efficient system operation through its superior optical and thermal management properties.
1. Features
| Number | Thickness(mm) | A[2856k] | D65 | Chemical stability | ND | α×10-7(/℃) | Tg(℃) | Ts(℃) | S | |||||
| x | y | Y | x | y | Y | DA | DW | |||||||
| GRB1 | 3 | 0.439 | 0.412 | 91.7 | 0.307 | 0.33 | 90.8 | 3 | 2 | 1.51 | 59 | 587 | 656 | 2.54 |
| GRB3 | 2 | 0.44 | 0.413 | 86.5 | 0.311 | 0.334 | 87.4 | 2 | 3 | 1.512 | 59 | 587 | 656 | 2.55 |
2. Technical requirements
| Number | Thickness(mm) | 420(nm) | 500(nm) | 600(nm) | 700(nm) | 800(nm) | 900(nm) | 1000(nm) | 1060(nm) | 2200(nm) |
| GRB1 | 3 | ≥85.0 | 45.0~70.0 | ≤4.0 | ||||||
| GRB3 | 2 | 365≥81.9 | ≥81 | ≥76.4 | ≤50.6 | ≤12.9 | ≤2.8 | ≤0.1 | ≤0.9 |
3. Bubble, fringe and stress levels
| Number | Bubble | Stripes | Stress |
| GRB1 | C | 3C | 4 |
| GRB3 | D-C | 3C | 4 |
4. The spectra

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.
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