Product type: Thin Film Filter. Application: Lighting, Medical, Optical, Photography. Model: NBPF.
Overview
The Customized Cwl 850nm Optical Coloured Glass Infrared IR Bandpass Filter is supplied as a bandpass filter made from Glass. Listed geometry: thickness Customized. Optical / electrical data: wavelength 850nm, bandwidth 30nm, transmittance T>90%. Listed for Lighting, Medical, Optical and Photography applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Glass |
|---|---|
| Type | Thin Film Filter |
| Shape | Customized |
| Cwl | 850nm |
| Fwhm | 30nm |
| Transmittance | T>90% |
| Usage | Lighting, Medical, Optical, Photography |
| Thickness Range | Customized |
| Model NO. | NBPF |
| Color | Transparent |
| Principle | Cut-off Filter |
| Angle of incidence | 0° |
| Packaging Details | Vacuum Packing,standard export packing to avoid breaking. |
| Supplier | Nano Macro Optics Co.,Ltd. |
Technical data
| CWL | 850±5nm or custom |
|---|---|
| FWHM | 30±3nm or custom |
| Blocking Range | 350-1100nm (except for transmission band) or custom |
| Cut-off Depth | >OD2-OD6 |
| Angle of Incidence | 0° |
| Product Material | Optical glass |
What to specify when you request a quote
- Spectral target — listed as “850nm”; state the centre or edge wavelength, the bandwidth and the minimum transmission in the passband.
- Blocking — give the blocking range and optical density (OD) the system needs.
- Angle of incidence — listed as “0°”; interference filters shift with angle, so specify the operating angle and cone.
- Size and thickness — listed as “Customized”; give outline, thickness and tolerance, and whether the filter is mounted.
- Substrate — listed as “Glass”; name the substrate glass if thermal or UV behaviour matters.
- Surface quality — quote scratch-dig for imaging paths.
Engineering guides for this part
For material grades and coating options, see Selecting Bandpass Filter Glass for Reliable Optical Performance. How parts like this are machined and finished is covered in Chalcogenide Glass Coating for IR Optical Components. For an application example, read Bandpass Filter Glass for Appliance Light Detection Modules. A related standard product is Bandpass Filter.
