Product Descriptions:
| Characteristics: | 940nm bandwidth 45nm |
| Central Wavelength (CWL): | 940nm or specified* |
| Transmittance: | >90% or specified |
| Dimension: | Round 70mm or customization |
| Thickness: | 0.55mm/0.7mm/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
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| Picture 1: BP940nm Spectral Curve |
What is typical application for 940nm bandpass filters?
Typical application for 940nm bandpass filters is very broad, include medical beauty device, microscope, visual sensoring, chemical analysis,Machine vision, Photography,Laser systems and Infrared imaging …etc.
What is key parameter when choose for right Narrow bandpass filters?
When selecting a Narrow bandpass filters:
- Center WaveLength (CWL) will be one of key parameter to be designated, with a tolerance of generally +/-2nm or +/5nm which depend on the user inquiry.
- Bandwidth (FWHM) normally range from 5-15nm, need to balances signal transmission with ambient light rejection. The FWHM of ultra narrow bandpass might be lower than 5nm.
- Peak and Average Transmittance ,e.g 90%,95%…etc. higher transmittance might need Anti-reflective(AR) coating.
- Subtrate: material will determin durability, thermal stability, and cost.
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.
