Product type: Convex Lens. Application: Optical. Model: OL.
Overview
Bk7 Optical Glass Double Convex Lens Optical Biconvex Lens: an optical lens made from Optical Glass. Listed geometry: double convex shape. Optical / electrical data: transmittance >95%. Listed for Optical applications. 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 | Double Convex |
| Transmittance | >95% |
| Usage | Optical |
| Model NO. | OL |
| Lenses Color | Clear |
| Supplier | Shenyang Ebetter Optics Co., Ltd. |
Technical data
| Diameter Tolerance | +0.0/-0.1mm |
|---|---|
| Center Thickness Tolerance | ±0.1 mm.. |
| Focal Length Tolerance | ±1%.. |
| Surface Quality | 60/40, 40/20 or better.. |
| Material | BK7, UVFused silica, Ge,CaF2, ZnSe |
| Clear Aperture | >90% |
| Centering | <3 arc min |
| Coating | Custom |
| Bevel | Protective bevel as needed |
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 — list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Selecting Fused Silica and Quartz Glass for Precision Components. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. 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).
