Product type: Concave Lens. Application: Lighting, Medical, Optical, Photography, Astronomy. Model: PCC lens.
Overview
The 50.4X10.5X1.2mm N-BK7 AR Coated Optical Plano Concave Lens is supplied as an optical lens made from Schott N-BK7. Listed geometry: size 50.4×10.5+/-0.1mm, single-lens shape. Optical / electrical data: transmittance >95%. Coating: Anti-Reflection; flatness 3/-(5),S1;3/6(3),S2. Listed for Lighting, Medical, Optical, Photography and Astronomy applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Schott N-BK7 |
|---|---|
| Type | Concave Lens |
| Shape | Single-lens |
| Transmittance | >95% |
| Coating | Anti-Reflection |
| Flatness | 3/-(5),S1;3/6(3),S2 |
| Clear aperture | >5.0×30.0mm |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Model NO. | PCC lens |
| Lenses Color | Clear |
| Specifications | Items |
| Dimensions | 50.4×10.5+/-0.1mm |
| Center thickness | 1.2+/-0.1mm |
| Edge thickness | 2.3+/-0.1mm |
| R1 | 260mm+/-2% CC |
| R2 | infinity |
| S1&S2 | 5/2×0.063 per CA;5/2×0.25 outside test area |
| Centerness | <3arcmin |
| Chamfer | 4×0.3×0.3+0.2/-0.0mmx45deg,Corner bevel |
| all other edges | 0.3+0.3mmx45deg |
| AR coating,Ravg<0.5%@450-700nm,AOI | 0-20deg,S1&S2 |
| Standard | ISO 10110 |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| BK7 Lens | Material: | Schott N-BK7 |
| Dimensions: | 50.4×10.5+/-0.1mm | |
| Center thickness: | 1.2+/-0.1mm | |
| Edge thickness: | 2.3+/-0.1mm | |
| R1: | 260mm+/-2% CC | |
| R2: | infinity | |
| Flatness: | 3/-(5),S1;3/6(3),S2 | |
| Surface quality: | S1&S2: 5/2×0.063 per CA;5/2×0.25 outside test area | |
| Centerness: | <3arcmin | |
| Clear aperture: | >5.0×30.0mm | |
| Chamfer: | 4×0.3×0.3+0.2/-0.0mmx45deg,Corner bevel | |
| all other edges:0.3+0.3mmx45deg | ||
| Standard: | ISO 10110 |
What to specify when you request a quote
- Material — listed as “Schott N-BK7”; name the glass or crystal.
- Geometry — listed as “50.4×10.5+/-0.1mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “3/-(5),S1;3/6(3),S2”; quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “2.3+/-0.1mm”; state centration and edge chamfer.
- Coating — listed as “Anti-Reflection”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see AR-Coated Glass Materials for High-Transmission Optical Parts. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. For an application example, read AR Coated Glass for Appliance Touch Screens: Specs and Selection. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is AR-Coated High-Transparency Optical Glass.
