Product type: Convex Lens. Application: Lighting, Optical. Model: FW-BK7.
Overview
The Optical Round Cylinder Rod Lens Bk7 K9 Glass is supplied as an optical lens made from Optical Glass. Listed geometry: cylindrical shaped lens shape. Optical / electrical data: transmittance >95%. Coating: UV. Typical applications: Lighting and Optical. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Type | Convex Lens |
| Shape | Cylindrical Shaped Lens |
| Transmittance | >95% |
| Coating | UV |
| Usage | Lighting, Optical |
| Model NO. | FW-BK7 |
| Lenses Color | Clear |
| Coat | Customized |
| Polish | Customized |
| Materials | Bk7,K9 |
| Supplier | Jiaozuo Commercial Finewin Co., Ltd. |
Technical data
| Diameters Available | 2mm to 500mm |
|---|---|
| Diameter Tolerance | +0.00/-0.1 or customer size |
| Surface Quality | 80-50,60-40,40-20,20-10,10-5 |
| Thickness Tolerance | +0.00/-0.05 mm |
| Focal Length Tolerance | +/-1% |
| Surface Flatness | 1/4lambda or customer design |
| Clear Aperture | >90% of Diameter |
| Chamfer | 0.05-0.5mmx45degree |
| Centration | 3 arc min |
|---|---|
| Coating | AR, Mgf2 are on request |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “UV”; 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 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 Fused Silica Glass Wafers (2–12", JGS1/JGS2).
