Product type: Convex Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
2mm Diameter Schott N-BK7 Uncoated Plano-Convex Lenses: an optical lens made from Schott N-BK7. Listed geometry: diameter 2.0+0.0/-0.1mm, single-lens shape. Optical / electrical data: transmittance 90%-95%. Coating: HMC; surface quality 10/5; flatness 1/10 Lambda. Typical applications: Lighting, Medical, Optical, Photography and Astronomy. 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 | Convex Lens |
| Shape | Single-lens |
| Diameter | 2.0+0.0/-0.1mm |
| Transmittance | 90%-95% |
| Coating | HMC |
| Surface quality | 10/5 |
| Parallelism | <3" |
| Clear aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Materials | Schtt BK7/Fused Silica |
| RMS | 4A/1A |
| Surface flatness | 1/10 Lambda |
| Coatings | Upon request |
| Center thickness | 1.0+/-0.1mm |
| ROC1 | Infinity |
| ROC2 | 2.1mm+/-3%,CX |
| Centerness | <3arcmin |
| Chamfer | 0.1-0.3mm(LW)x45deg |
| Standard | MIL-PRF-13830B |
| CPG is also an ISO | 9001&14001 certified manufacture, we deliver fast and provide best cost performance ratio for our customers. |
| Package detail | Optics are packed with Capacitor paper, white paper, custom-made plastic containers etc |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Spherical Lenses | Material: | Schott N-BK7 |
| Diameter: | 2.0+0.0/-0.1mm | |
| Center thickness: | 1.0+/-0.1mm | |
| ROC1: | Infinity | |
| ROC2: | 2.1mm+/-3%,CX | |
| Surface quality: | S1&S2:S-D 10-5 | |
| Centerness: | <3arcmin | |
| Clear aperture: | >90% | |
| Chamfer: | 0.1-0.3mm(LW)x45deg | |
| Coating: | Uncoated | |
| Standard: | MIL-PRF-13830B |
What to specify when you request a quote
- Material — listed as “Schott N-BK7”; name the glass or crystal.
- Geometry — listed as “2.0+0.0/-0.1mm”; 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 — listed as “0.1-0.3mm(LW)x45deg”; state centration and edge chamfer.
- Coating — listed as “HMC”; 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 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).
