Product type: Color Filter. Application: Lighting, Medical, Optical, Photography. Model: TT Filter 20.
Overview
Stocked D27 IR Cut-off Mounted Optical Bandpass Filter is a UV / IR cut filter made from Glass. Listed geometry: diameter D27mm, thickness 1mm-2mm, round shape. Surface quality 40-20. 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 | Color Filter |
| Shape | Round |
| Diameter | D27mm |
| Surface Quality | 40-20 |
| Usage | Lighting, Medical, Optical, Photography |
| Thickness Range | 1mm-2mm |
| Model NO. | TT Filter 20 |
| Color | Green |
| Principle | Cut-off Filter |
| Angle of incidence | 0° |
| Diameter Tolerance | +0/-0.1 |
| Thickness Tolerance | +0/-0.1 |
| Supplier | Tianjin Tengteng Optoelectronic Technology Co., Ltd. |
Technical data
| Name | Stocked D27 IR Cut-off Mounted Optical Bandpass Filter |
|---|---|
| Size | D27mm |
| Material | N-BK7/H-K9L |
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 “0°”; interference filters shift with angle, so specify the operating angle and cone.
- Size and thickness — listed as “D27mm”; 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 “40-20”; 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 Optical Glass Colour Filter.
