Product type: Achromatic Lenses. Application: Optical, Infrared Image. Model: STFA.
Overview
Optical Bk7 K9 Glass Achromatic Doublet Lenses with Coating Good Price is an optical lens made from K9 Quartz Bk7 Corning7980 Germanium Silicon Znse. Listed geometry: cemented lenses shape. Optical / electrical data: transmittance >95%. Coating: Polish+Coating; surface quality 10-5; flatness 1/20 Lambda. Typical applications: Optical and Infrared Image. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | K9 Quartz Bk7 Corning7980 Germanium Silicon Znse |
|---|---|
| Type | Achromatic Lenses |
| Shape | Cemented Lenses |
| Transmittance | >95% |
| Coating | Polish+Coating |
| Surface Quality | 10-5 |
| Flatness | 1/20 Lambda |
| Usage | Optical, Infrared Image |
| Model NO. | STFA |
| Lenses Color | Clear |
| Tolereance | +0.00/-0.01mm |
| Certeration | <1arcmin |
| Supplier | Changchun Sunday Optics Co., Ltd. |
Technical data
| Structure | Achromatic Lenses |
|---|---|
| Material | Optical glass, UVFS,Germanium, Silicon,CaF2,MgF2,ZnSe ZnS,Sapphire |
| Diameters Available | 1mm to 600mm |
| Diameter Tolerance | +0.00/-0.01mm or customer design |
| Surface Quality | 10-5 |
| Thickness tolerance | +0/-0.01mm |
| Clear Aperture | >90% of Diameter |
| Chamfer | 0.05-0.5mmx45degree,according to customer's needs. |
| Centeration | 3 arcmin |
| Coating | Single Mag2, Multiple Layers AR Coating A:350-650nm B:650-1050nm C:1050-1585nm D: Customer Design |
What to specify when you request a quote
- Material — listed as “K9 Quartz Bk7 Corning7980 Germanium Silicon Znse”; name the glass or crystal.
- Geometry — give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “10-5”; quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “Polish+Coating”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Fused Silica and Quartz Glass: Selecting Materials for Precision Components. How parts like this are machined and finished is covered in Flat Glass Polishing Process for Precision Substrates. For an application example, read Boost Yield with Fused Silica Viewports for Vacuum and Optical Systems. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Infrared Windows.
