Product type: Color Filter. Application: Optical. Model: FSOF.
Overview
Superior Longpass Optical Filters Exceptional Wavelength Discrimination for Unparalleled Spectral Purity in Medical, Analytical, and Photonics Fields is a longpass / shortpass filter made from Glass. Listed geometry: round shape. Optical / electrical data: wavelength 400-1300nm. It is used in Optical. 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 | Round |
| Wavelength Range | 400-1300nm |
| Usage | Optical |
| Model NO. | FSOF |
| Color | Colorful |
| Principle | Cut-off Filter |
| Angle of incidence | 45° |
| Spectral Range | 300-1650 |
| Dimensional Tolerance | 0.5 – 600 ± 0.02 mm |
| Optical Density | Od3; Od4; Od5; Od6 |
| Supplier | Tianjin Fushi Optical Technology Co., Ltd. |
Technical data
| Product Name | Optical Filter Longpass / Shortpass |
|---|---|
| Diameter | 4mm-160mm – 0.20mm |
| Thickness | 0.5mm-4mm |
| Dimension Tolerance | 4mm-160mm – 0.20mm |
| Surface Quality | 60/40, 40/20 or better |
| Transmission | >95% |
| Clear Aperture | ≥90% |
| Type | Longpass Filter |
What to specify when you request a quote
- Spectral target — listed as “400-1300nm”; state the centre or edge wavelength, the bandwidth and the minimum transmission in the passband.
- Blocking — listed as “Od3; Od4; Od5; Od6”; 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 “0.5 – 600 ± 0.02 mm”; 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 Longpass Filter Glass for Precision Optical Systems. For an application example, read Custom Shortpass Filter Glass for Appliance Optical Modules. A related standard product is Shortpass Filter.


