The glass type secondary surface mirror(OSR)has been widely used in various satellites such as navigation,communication and remote sensing in China since its teechnical appraisal in 1989 and successful flight test in 1990.
Main technical indicators：
Size specifications(mm)
lengthxwidth(mm)：40x40 (20)
thickness(mm)：0.15
Solar absorption rate（αs）：as≤0.10
Hemispherical emissivity(٤εh)：εh≥0.80
surface resistance(KΩ):≤20
![](\"https://cdn.socialarks.com/sbsp/24399/whatcc/2025/1222/%E6%9C%AA%E5%91%BD%E5%90%8D%E7%9A%84%E8%AE%BE%E8%AE%A1%20%2838%29.png\"/)
Environmental adapptability indicators：
Humid-thermal aging： Humidity 50±2,relative humidity 95%±5%,72 hours
Film adhesion：Satisfy the 2-4N/cm tensiile test
Temperature cycling ：-1960~+150，100 times
Vacuum ultraviolet irradiation：8000ESH
Vacuum electron irradiation：50KeV,Total injection volume 2x1016e/cm2
Vacuum proton irradiation：50KeV, Total injection volume 2x101p/cm2
Storage conditions and duration
At normal indoor temperatuure and relative humidity not exceeding 55%,and stored in unopened and sealed packaging containers.the product has a storage period off 24 months from the date of shipment.
