Product type: Optical Shortpass Filter. Application: Lighting, Medical, Optical, Photography, Astronomy. Model: Filter.
Overview
The 30X20X3mm 1200-1390nm IR Coated Optical Shortpass Filter is supplied as a longpass / shortpass filter made from Fused Silica. Listed geometry: size 30.0×20.0+0.0/-0.1mm, thickness 2mm-5mm. 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 | Fused Silica |
|---|---|
| Type | Optical Shortpass Filter |
| Shape | Customized |
| Surface quality | 60-40 |
| Parallelism | <1arcmin |
| Clear aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Model NO. | Filter |
| Thickness Range | 2mm-5mm |
| Color | Transparent |
| Principle | Short Pass |
| Angle of incidence | 45° |
| Dimensions | 30.0×20.0+0.0/-0.1mm |
| ROC1 | infinity |
| ROC2 | infinity |
| Bevel | protected |
| CPG is also an ISO | 9001&14001 certified manufacture, we deliver fast and provide best cost performance ratio for our customers. |
| Package detail | Optics are packed with Capacitor paper, white paper, custom-made plastic containers etc |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Material | UV Fused Silica |
|---|---|
| Dimensions: | 30.0×20.0+0.0/-0.1mm |
| Thickness: | 3.0+/-0.1mm |
| ROC1: | infinity |
| ROC2: | infinity |
| Surface quality: | 60-40 |
| Bevel: | protected |
| Parallelism: | <1arcmin |
| Clear aperture: | >90% |
What to specify when you request a quote
- Spectral target — 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 “2mm-5mm”; give outline, thickness and tolerance, and whether the filter is mounted.
- Substrate — listed as “Fused Silica”; 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 Longpass Filter Glass for Precision Optical Systems. How parts like this are machined and finished is covered in Chalcogenide Glass Coating for IR Optical Components. For an application example, read Custom Shortpass Filter Glass for Appliance Optical Modules. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Longpass Filter.
