Product type: Thin Film Filter. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
The Dia30xt4.2mm 658nm Coating Optical Bandpass Filter is supplied as a bandpass filter made from Glass. Listed geometry: diameter 30.0+0.0/-0.2mm, thickness 4.2+/-0.2mm. Optical / electrical data: wavelength 658+/-2nm, bandwidth 10+/-2nm. Listed for Lighting, Medical, Optical, Photography and Astronomy 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 |
| Diameter | 30.0+0.0/-0.2mm |
| Thickness | 4.2+/-0.2mm |
| CWL | 658+/-2nm |
| FWHM | 10+/-2nm |
| Clear aperture | >D28.0mm |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Color | Transparent |
| Principle | Selective Absorption Filter |
| Angle of incidence | 0° |
| Thickness Range | 2mm-5mm |
| Materials we already use | optical glass, materials, and even some plastics. |
| Specifications | Items |
| R1 | infinity |
| R2 | infinity |
| Chamfer | 0.25-0.45mmx45deg |
| T>50%@658+/-2nm,AOI | 0deg |
| Standard | ISO 10110 |
| Applications | . fluorescence microscopy |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Bandpass Filter | Material: | float glass+color glass |
| Diameter: | 30.0+0.0/-0.2mm | |
| Thickness: | 4.2+/-0.2mm | |
| R1: | infinity | |
| R2: | infinity | |
| Flatness: | S1&S2:N/A | |
| Surface quality: | S1&S2:60-40 after coating | |
| Parallelism: | N/A | |
| Clear aperture: | >D28.0mm | |
| Chamfer: | 0.25-0.45mmx45deg | |
| Coating: | S1&S2:Basspass coating | |
| CWL:658+/-2nm | ||
| FWHM:10+/-2nm | ||
| Standard: | ISO 10110 |
What to specify when you request a quote
- Spectral target — listed as “658+/-2nm”; 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 “30.0+0.0/-0.2mm”; 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. For an application example, read Bandpass Filter Glass for Appliance Light Detection Modules. A related standard product is Bandpass Filter.
