Product Descriptions:
| Characteristics: | 850nm bandwidth 40nm |
| Central Wavelength (CWL): | 850nm or specified* |
| Transmittance: | >90% or specified |
| Dimension: | Round 25mm or customization |
| Thickness: | 1.0mm/2.0mm/3.0mm |
| Substrate: | Ultra-clear glass,K9,BK7,B270,D2637T, Quartz Glass(Fused Silica) or other specified. |
| Spectral range: | 380-1100nm |
| Remark： *Customized capability: 380-2500nm, stock for 10nm intervals. **Common for 86x86mm, 80x80mm,other can customized,max. 300x300mm *** Option: 0.21、0.3、0.55、0.7、1.0、1.1、2.0、3.0mm…etc | |
Spectral curve
 |
| Picture 1: BP850nm Spectral Curve |
What is typical application for 850nm bandpass filters?
850nm bandpass filters are precision optical components designed to transmit a narrow band of light centered at 850nm while blocking light at other wavelengths, and typical application for 850nm bandpass filters is very broad, include security, surveillance and night vision, machine vision and industrial automation, optical communications and sensing, medical and biometric devices, laser systems and instrumentation …etc.850nm bandpass filters are essential for any system that requires precise detection, imaging, or communication using invisible near-infrared light.
What is key parameter when choose for right bandpass filters?
When selecting a bandpass filters, the center wavelength (CWL) will be one of key parameter to be designated, with a tolerance of generally +/-5nm or +/7nm which depend on the user inquiry. Secondly,Peak and Average Transmittance,e.g 90%,95%…etc. higher transmittance might need Anti-reflective(AR) coating.
Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical technology that apply depositing nanomaterials through ion-assisted evaporation onto a multilayer hard film in a high vacuum environment which coating layer is firm and has good tightness, and small bandwidth drift. Liyuan optoelectronics have been focus on optical coating for more than 17 years and offer one-stop optical filters solution including Narrow Bandpass Fitlers, IR cut-off Filters, Longpass & Short Filters,Notch Filters, ND filters, Star filters and Optical sapphire block.
other IR cut-off filters in stock from Liyuan Optoelectronics: IR600 IR630 IR650 IR680 IR700 IR730 IR750…etc.
