Product type: Color Filter. Application: Lighting, Medical, Optical, Photography. Model: optical filter.
Overview
Optical 970nm Band Pass Filter is a bandpass filter made from Glass. Listed geometry: size 4mm-160mm – 0.20mm, thickness 0.5mm-4mm. Optical / electrical data: wavelength 190nm to 4.5um. Flatness Up to Lambda/10. It is used in Lighting, Medical, Optical and Photography. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Glass |
|---|---|
| Type | Color Filter |
| Shape | Customized |
| Dimension | 4mm-160mm – 0.20mm |
| Thickness | 0.5mm-4mm |
| Wavelength range | 190nm to 4.5um |
| Usage | Lighting, Medical, Optical, Photography |
| Thickness Range | 5mm-10mm |
| Model NO. | optical filter |
| Color | Blue |
| Principle | Selective Absorption Filter |
| Angle of incidence | 45° |
| Squares/Rectangles | 1mm-165mm |
| Thickness tolerance | +/-0.01mm-0.1mm |
| Edges | Fine |
| Ground Flatness | Up to Lambda/10 |
| Surface quantity | 80/50-20/10 Scratch/Dig |
| Supplier | China Star Optics Technology Co., Ltd. |
What to specify when you request a quote
- Spectral target — listed as “190nm to 4.5um”; 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 “45°”; interference filters shift with angle, so specify the operating angle and cone.
- Size and thickness — listed as “4mm-160mm – 0.20mm”; 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 — listed as “Up to Lambda/10”; 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. For an application example, read Bandpass Filter Glass for Appliance Light Detection Modules. A related standard product is Optical Glass Colour Filter.
