Product type: Thin Film Filter. Application: Optical. Model: SPF380.
Overview
IR Blocking Optical Filter for UV Applications with 380nm Cut-on: a longpass / shortpass filter made from Optical Glass. Listed geometry: thickness Customized. Optical / electrical data: wavelength 380±5, transmittance ≥90. 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 | Optical Glass |
|---|---|
| Type | Thin Film Filter |
| Shape | Customized |
| Usage | Optical |
| Model NO. | SPF380 |
| Thickness Range | Customized |
| Principle | Cut-off Filter |
| Angle of incidence | 0° |
| Cut-on Wavelength (Nm) | 380±5 |
| Passband Range (Nm) | 305-450 |
| Passband Transmittance (%) | ≥90 |
| Blocking Range (Nm) | 640-850 |
| Optical Density (Od) | 2 |
| Supplier | Shanghai Mega-9 Optoelectronic Co., Ltd. |
Technical data
| Name | Cut-off Wavelength | Passband Range | Passband Transmittance | Blocking Range |
| SPF650 | 650±5nm | 400 nm – 640 nm | ≥ 90%(Tavg) | 700 – 1100 nm (OD≥3) |
| SPF400 | 400±5nm | 200 nm – 390 nm | ≥ 85% (Tavg) | 430 – 700 nm (OD≥3) |
| SPF380 | 380±5nm | 305nm – 450nm | ≥ 90%(Tavg) | 640 – 850 nm(OD≥2) |
What to specify when you request a quote
- Spectral target — listed as “380±5”; state the centre or edge wavelength, the bandwidth and the minimum transmission in the passband.
- Blocking — listed as “640-850”; 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 “Customized”; give outline, thickness and tolerance, and whether the filter is mounted.
- Substrate — listed as “Optical 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. How parts like this are machined and finished is covered in Precision Glass Cutting Process for Custom Components. For an application example, read Custom Shortpass Filter Glass for Appliance Optical Modules. A related standard product is Shortpass Filter.
