Product type: Optical Filter. Application: Lighting, Medical, Optical, Photography.
Overview
The 650nm Optical Filter Band Pass Filter Low Pass is supplied as a bandpass filter made from Glass. Listed geometry: diameter Customized, square or rectangular shape. Optical / electrical data: transmittance 90%. Coating: Polished; flatness Lambda/4, Lambda/2 or as Reques. It is used in Lighting, Medical, Optical and Photography. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Glass |
|---|---|
| Type | Optical Filter |
| Shape | Square or Rectangular |
| Diameter | Customized |
| Transmittance | 90% |
| Coating | Polished |
| Clear Aperture | 90% |
| Usage | Lighting, Medical, Optical, Photography |
| Lenses Color | Clear |
| Radius | Customized |
| Surface Flatness | Lambda/4, Lambda/2 or as Reques |
| Surface Roungh | 60/40 |
| Structure | Plano Concave |
| Supplier | Shanghai Jingsheng Optoelectronics Technology Co., Ltd |
Technical data
| Name | Optical filters |
|---|---|
| Material | B270, BK7, JGS |
| CWL | 405-545nm;532-650nm;600-670nm |
| Cut-on wavelength | 497nm±3nm |
| Diameter | 1-200mm |
| Thickness | 0.5-10mm |
| Surface roungh | 60/40, 40/20 or better |
| Surface flatness | lambda/4, lambda/2 or as request |
| Chamfer | 0.1+/-0.05mmx45deg |
| Coating | AR Coating or Customer Design |
What to specify when you request a quote
- Spectral target — listed as “90%”; 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 — 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 “Glass”; name the substrate glass if thermal or UV behaviour matters.
- Surface quality — listed as “Lambda/4, Lambda/2 or as Reques”; 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. How parts like this are machined and finished is covered in Flat Glass Polishing Process for Precision Substrates. For an application example, read Bandpass Filter Glass for Appliance Light Detection Modules. A related standard product is Bandpass Filter.
