Custom optical windows
With the rapid development of modern intelligent system, more and more to the requirement of optical windows are becoming more and more high, the optical window filter as one of the important components, applications can involve various aspects, such as: smart home system, biometric systems, intelligent robot parts, laser bar code scanning, infrared remote control, medical equipment display window, UV camera lens, and so on.
DG optoelectronics can offer K9, B270, high borosilicate and quartz substrate, such AS sapphire substrate, can according to customer’s requirements and plating AR, AF, AS membrane, coloured optical glass material, after optical processing and vacuum coating on the surface of the product with a specific spectral characteristics, the main products are red yellow filter, filter and green filter, infrared, violet, blue filter, filter and filter, and other varieties.
Product features: as window protection, it will not lose light energy, improve transmission rate, increase hardness, reduce reflection and increase surface smoothness.
The advantages of glass optical window: increase the transmittance of single point or broad frequency, the coating on both sides can reach more than 98%, reduce the loss of light energy, reduce reflection and avoid imaging double shadow.
Optical windows specifications
|Dimensional tolerance||0/-0.02, 0/-0.015, 0/-0.001|
|Thickness Tolerance||±0.1, ±0.01|
|Surface Sag||Ra: 0.001, Ra：0.0002|
|Irregularity (P – V)||ΔN=1, ΔN=0.5, ΔN=0.3|
|Surface quality||60-40, 20-10, 10-5|
Custom optical windows coating capabilities
|Substrates||All glass types|
|Spectral edge tolerance||＜1% deviation, ＜0.2% special cases|
|AR Coating reflectivity||>0.3% (absolute); <0.2% (average)|
|Laser damage threshold||Up to 20J/cm²@20ns pulses|
|Durability||MIL-STD-810F, section 507.4; MIC-C-48497A, section 3.4.1|