Product type: Concave Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
The Plano Concave Spherical Within Ar-Coated Coating Optical Professional Factory Direct Sales Lens is supplied as an optical lens made from Optical Glass. Listed geometry: round shape. Optical / electrical data: transmittance >95%. Coating: Coated/Uncoated; surface quality 60/40 (we can process to 10-5 with high precision). It is used in 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 | Optical Glass |
|---|---|
| Type | Concave Lens |
| Shape | round |
| Transmittance | >95% |
| Coating | Coated/Uncoated |
| Surface quality | 60/40 (we can process to 10-5 with high precision) |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Outer circle | 3mm-500mm ± 0.1mm |
| Radius of curvature | ± 1mm – ± 50000mm ± 1% |
| Center thickness tolerance | ± 0.05mm (we can process to ± 0.01mm with high precision) |
| Center deviation | 3′(we can process to 30 ″with high precision) |
| Surface accuracy | λ/ 8 (high precision, we can process to 1 / 10λ) |
| Effective caliber | ≥90% |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Parameters |
|---|---|
| Material | optical glass, H-K9L (N-BK7) |
| Outer circle: | 3mm-500mm ± 0.1mm |
| Radius of curvature: | ± 1mm – ± 50000mm ± 1% |
| Center thickness tolerance: | ± 0.05mm (we can process to ± 0.01mm with high precision) |
| Center deviation: | 3′(we can process to 30 ″with high precision) |
| Surface accuracy: | λ/ 8 (high precision, we can process to 1 / 10λ) |
| Surface quality: | 60/40 (we can process to 10-5 with high precision) |
| Effective caliber: | ≥90% |
| Coating: | Maultilayer Antireflective Coating A:400-700nm B:650-1050nm C:1000-1650nm |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — listed as “± 1mm – ± 50000mm ± 1%”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “60/40 (we can process to 10-5 with high precision)”; quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “Coated/Uncoated”; 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.
