Product type: Concave Lens. Application: Lighting, Medical, Optical, Photography, Astronomy. Model: Quartz lens.
Overview
The Optical Quartz Plano Concave 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). 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 | 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 |
| Model NO. | Quartz lens |
| 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 Fused Silica and Quartz Glass: Selecting Materials for Precision Components. How parts like this are machined and finished is covered in Flat Glass Polishing Process for Precision Substrates. For an application example, read Fused Silica Glass Wafers for Precision Appliance Electronics. 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).
