Product type: Color Filter. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
The OD 2 High Precision Optical Narrow-Band Filters of Factory Mass Production is supplied as an optical filter made from Glass. Listed geometry: thickness 2.50+/-0.05mm. Optical / electrical data: bandwidth 50+/-7nm. Coating: Band pass filter coating; surface quality 60-40. Typical applications: Lighting, Medical, Optical, Photography and Astronomy. 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 |
| Thickness | 2.50+/-0.05mm |
| FWHM | 50+/-7nm |
| Coating | Band pass filter coating |
| Surface quality | 60-40 |
| Clear aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Thickness Range | 2mm-5mm |
| Color | Black |
| Principle | Cut-off Filter |
| Angle of incidence | 45° |
| Materials we already use | optical glass, materials, and even some plastics. |
| Specifications | Items |
| Major axis | 17.00+0.00/-0.10mm |
| ROC1 | infinity |
| ROC2 | infinity |
| Chamfer | 0.1-0.2mm(FW)x45deg |
| Blocking range(0.55-1.2)xCWL,blocking depth | OD>3 |
| Standard | MIL-PRF-13830B |
| Applications | . |
| Package detail | Optics are packed with Capacitor paper, white paper, custom-made plastic containers etc |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Narrow band filter | Material: | Schott N-BK7 |
| Diameter: | Major axis:17.00+0.00/-0.10mm | |
| Thickness: | 2.50+/-0.05mm | |
| ROC1: | infinity | |
| ROC2: | infinity | |
| Surface quality: | 60-40 | |
| Parallelism | <3arcmin | |
| Clear aperture: | >90% | |
| Chamfer: | 0.1-0.2mm(FW)x45deg | |
| Coating: | Band pass filter coating | |
| FWHM:50+/-7nm | ||
| Blocking range(0.55-1.2)xCWL,blocking depth:OD>3 | ||
| Standard: | MIL-PRF-13830B |
What to specify when you request a quote
- Spectral target — listed as “50+/-7nm”; state the centre or edge wavelength, the bandwidth and the minimum transmission in the passband.
- Blocking — listed as “OD>3”; 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 “2.50+/-0.05mm”; 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 “60-40”; 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.
