Product type: Color Filter. Application: Lighting, Medical, Optical, Photography. Model: TT Filter 18.
Overview
Optical Glass IR Cut-off Longpass/Shortpass Filter is a UV / IR cut filter made from Glass. Listed geometry: thickness as Required. Surface quality 60-40. Typical applications: 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 | Color Filter |
| Shape | Customized |
| Thickness | as Required |
| Surface Quality | 60-40 |
| Usage | Lighting, Medical, Optical, Photography |
| Model NO. | TT Filter 18 |
| Thickness Range | 1mm-2mm |
| Color | Green |
| Principle | Cut-off Filter |
| Angle of incidence | 0° |
| Surface 1 | Hard Dielectric Sputtered |
| Surface 2 | AR Coated |
| Supplier | Tianjin Tengteng Optoelectronic Technology Co., Ltd. |
Technical data
| Product Name | Optical Glass IR cut-off Longpass/Shortpass Filter |
|---|---|
| Longpass Filters | Also known as Longpass Edge Filters, are designed to transmit wavelengths greater than the cut-on wavelength of the filter |
| Shortpass Filters | Also known as Shortpass Edge Filters, are used to transmit wavelengths shorter than the cut-off wavelength of the filter. |
| Usage | Microscopy or fluorescence instrumentation |
| Coating Specification | Surface 1: Hard Dielectric SputteredSurface 2: AR Coated |
| 1.Material | BK7 Glass, Fused Silica or Color glass |
|---|---|
| 2.Dimensional tolerances | 0/-0.1mm |
| 3.Clear aperture | >90% |
| 5.Parallelism | 1 Arc minute |
| 6.Surface Quality | US Standard 40-20,ISO Standard 3X0.25 |
| 7.Edge Chip | <0.1mm |
| 8.Bevel | Based on clients' requests |
| 9.Coating | AR, HR, PR or based on clients' requests |
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 “as Required”; 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 “60-40”; 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.
