Product type: Flat Lens. Application: Thermal Image. Model: SRT029.
Overview
Fixed Price PVD Diameter 12/18/19/20mm Znse Focus Laser Lens is an optical lens made from USA Znse. Listed geometry: window shape. Optical / electrical data: transmittance >95%. Coating: HC; surface quality 60-40; flatness 1/4 Lambda. Typical applications: Thermal Image. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | USA Znse |
|---|---|
| Type | Flat Lens |
| Shape | Window |
| Transmittance | >95% |
| Coating | HC |
| Surface Quality | 60-40 |
| Flatness | 1/4 Lambda |
| Usage | Thermal Image |
| Model NO. | SRT029 |
| Tolerance | +/-0.05mm |
| Supplier | Changchun Sunday Optics Co., Ltd. |
Technical data
| Diameter | 5mm to 250mm |
|---|---|
| Thickness | 0.5-40mm |
| Material | Import USA ZnSe, China ZnSe |
| Surface Quality | 40-20 standard |
| Flatness | 1/10 lambda |
| Chamfer | 0.25mmx45degree |
| Focal Length Tol. | +/-1% |
| Coating Wavelength | 8um-12um |
| Clear Aperture | >85% of diameter |
| Design Wavelength | 10.6um |
What to specify when you request a quote
- Material — listed as “USA Znse”; name the glass or crystal.
- Geometry — give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “60-40”; quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “HC”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Fused Silica Windows for UV and Laser Optical Systems. How parts like this are machined and finished is covered in Flat Glass Polishing Process for Precision Substrates. For an application example, read How to Handle and Maintain Precision Glass Components in Laser Systems. Before sending a drawing, check Quartz Glass Manufacturing: Controlling Thermal Conductivity in Fused Silica. A related standard product is Infrared Windows.
