Product type: Thin Film Filter. Application: Lighting, Medical, Optical, Photography. Model: BP 520.
Overview
Factory Price Optical IR Cut Glass Infrared Band Pass 520nm Bandpass Filter is a UV / IR cut filter made from Glass. Listed geometry: size 5~80mm, thickness 0.55~3mm. Optical / electrical data: wavelength 520nm, bandwidth 20nm or Custom. Listed for Lighting, Medical, Optical and Photography 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 |
| Size | 5~80mm |
| Cwl | 520nm |
| Fwhm | 20nm or Custom |
| Usage | Lighting, Medical, Optical, Photography |
| Thickness Range | 0.55~3mm |
| Model NO. | BP 520 |
| Color | Transparent |
| Principle | Cut-off Filter |
| Angle of incidence | 0° |
| Supplier | Nano Macro Optics Co.,Ltd. |
Technical data
| Wavelength | 520nm |
|---|---|
| FWHM | 20nm or custom |
| Transmittance | T>90% or custom |
| Substrate Material | K9,BK7,B270 etc |
| Dimensions | custom |
| Thickness | 1.1 ±0.1mm or custom |
| AOI | 0° |
| Transmittance | T>90% |
| Surface Quality (SQ) | 60-40 Scratch & Dig |
| Clear Aperture (CA) | 90% |
| Blocking | 350-1500nm except for transmission band |
What to specify when you request a quote
- Spectral target — listed as “520nm”; 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 “5~80mm”; 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 Dichroic Filter Glass: Selecting Substrates for Precision Optical Separation. How parts like this are machined and finished is covered in Chalcogenide Glass Coating for IR Optical Components. For an application example, read Dichroic Filter Glass for Smart Appliance Lighting Modules. A related standard product is Dichroic Filter.
