Product Descriptions:
| Characteristics: | 915nm Bandpass Filter |
| Type: | Interference type |
| Central Wavelength (CWL): | 910+-5nm |
| Full Width at Half Maximum(FWHM): | 50nm |
| Peak Transmittance(%) : | >92% |
| Optical Density: | OD2 |
| Shape: | Round, square or customized |
| Color: | Silver |
| Surface Quality: | 60/40 scratch-dig |
| Dimension(mm): | Common for 86x86mm, 80x80mm, other can customized, max. 300x300mm |
| Thickness(mm): | 0.21、0.3、0.55、0.7、1.0、1.1、1.5、1.8、2.0、3.0mm, etc. |
| Substrate materials: | Ultra-clear glass,K9,BK7,B270,D2637T, Quartz Glass(Fused Silica) or other specified. |
| Remark: Customized capability: 200-2000nm. | |
Spectral measurement graph
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| Picture 1: BP910-50nm Spectral measurement graph |
What is typical application for 910nm infrared bandpass filters?
A 910nm infrared bandpass filter is a precision optical component to transmits 910nm near-infrared light, while exhibiting high optical density suppression for off-band wavelengths.
Typically, 910nm infrared bandpass filters find applications in near-infrared spectroscopy, laser ranging, machine vision, and biomedical imaging. Additionally, in tissue imaging and pulse oximetry, the filters’ high signal-to-noise ratio ensures stable signal acquisition. Besides, these filters also serve in multispectral imaging and LiDAR systems.
What are key parameters when choose for a suitable infrared bandpass filter?
When selecting a Narrow Bandpass Filter, normally the following factors need to be taken into consideration：
- Central Wavelength (CWL)：CWL is one of key parameter to designate first, it refer to the central wavelength at stable high transmission rate passband.
- Peak or Average Transmittance: typically ≥90%, Higher transmittance might need Anti-reflective(AR) coating.
- Full width at half maximum (FWHM): FWHM refer to the interval between the two wavelength points where the transmittance rate reaches 50%.
- Blocking rate: usually in terms of optical density(OD), OD2-OD3 for standard and higher will be OD4-OD6 per requirement.
- Angle of Incidence (AOI): AOI need to be considered as Interference Filter is angle sensitive, 0° AOI by default, other AOI e.g. 30/45° need to be specified.
- Physical and environmental requirement: Substrate type, dimensions and thickness, surface quality, and environmental durability.
Related products:
905nm Narrow Bandpass Filter, 905nm CWL ,40nm FWMH, Hard Coated, 1.0mm thickness
Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical vacuum technology that apply depositing nano-materials 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. Besides, Liyuan optoelectronics have been focus on optical coating for more than 17 years ,and the company offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass Filters, Shortpass Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.
