Product type: Step lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
1" diameter or custome size quartz AR coated step lens is an optical lens made from Schott N-BK7. Listed geometry: diameter 25.40+0.05/-0.13mm or others, single-lens shape. Optical / electrical data: transmittance >95%. Coating: Anti-Reflection; surface quality 10/5; flatness 1/10 Lambda. 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 | Step lens |
| Shape | Single-lens |
| Diameter | 25.40+0.05/-0.13mm or others |
| Transmittance | >95% |
| Coating | Anti-Reflection |
| Surface quality | 10/5 |
| Parallelism | <3" |
| Clear aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Materials | Schtt BK7/Fused Silica/Quartz |
| Step thickness | custome |
| RMS | 4A/1A |
| Surface flatness | 1/10 Lambda |
| Coatings | Upon request |
| Concentricity | <0.05mm |
| Center thickness | 11.7+/-0.1mm or others |
| ROC1 | Infinity |
| ROC2 | 13.1mm+/-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 | |
| Plano-Convex Lenses | Material: | Schott N-BK7/Fused Silica/Quartz |
| Diameter: | 25.40+0.05/-0.13mm or others | |
| Center thickness: | 11.7+/-0.1mm or others | |
| ROC1: | Infinity | |
| ROC2: | 13.1mm+/-3%,CX | |
| Surface quality: | S1&S2:S-D 10-5 | |
| Centerness: | <3arcmin | |
| Clear aperture: | >90% | |
| Chamfer: | 0.1-0.3mm(LW)x45deg | |
| Coating: | AR coated | |
| 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 “25.40+0.05/-0.13mm or others”; 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 “<0.05mm”; 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 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 AR Coated Glass for Appliance Touch Screens: Specs and Selection. Before sending a drawing, check Quartz Glass Manufacturing: Controlling Thermal Conductivity in Fused Silica. A related standard product is AR-Coated High-Transparency Optical Glass.
