Product type: Spherical Lens. Application: Lighting, Medical, Optical, Photography, Astronomy. Model: Laser cutting lens.
Overview
Fused Silica Corning 7980 Large-scale lens (Dia250mm) for Laser-cutting is an optical lens made from Schott N-F2. Listed geometry: diameter 250+0.0/-0.1mm, single-lens shape. Optical / electrical data: transmittance 95%-99.98%. Supplied uncoated. 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-F2 |
|---|---|
| Type | Spherical Lens |
| Shape | Single-lens |
| Diameter | 250+0.0/-0.1mm |
| Transmittance | 95%-99.98% |
| Coating | Uncoated |
| Clear aperture | >230mm |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Model NO. | Laser cutting lens |
| Lenses Color | Clear |
| Specifications | Items |
| Center thickness | 32.0+/-0.2mm |
| ROC1 | Infinity |
| ROC2 | 769.64mm+/-0.8mm,CX |
| Centerness | <1arcmin |
| Chamfer | <1.0mmx45deg |
| Standard | MIL-PRF-13830B |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Spherical Lens | Material: | |
| Diameter: | 250+0.0/-0.1mm | |
| Center thickness: | 32.0+/-0.2mm | |
| ROC1: | Infinity | |
| ROC2: | 769.64mm+/-0.8mm,CX | |
| Surface quality: | S1&S2:40-20 | |
| Centerness: | <1arcmin | |
| Clear aperture: | >230mm | |
| Chamfer: | <1.0mmx45deg | |
| Standard: | MIL-PRF-13830B |
What to specify when you request a quote
- Material — listed as “Schott N-F2”; name the glass or crystal.
- Geometry — listed as “250+0.0/-0.1mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “<1.0mmx45deg”; state centration and edge chamfer.
- Coating — listed as “Uncoated”; 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 Optical Glass Polishing for High Clarity Surfaces. For an application example, read Laser Cut Glass Covers: The Key to Durable Appliance LED Packaging. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Laser Beam Splitter Glass Sheet.
