Product type: Fresnel Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
Optical Diameter 210mm Solar Energy Gathering Fresnel Lens is an optical lens made from Optical Glass. Listed geometry: diameter 210.0+/-0.1mm, thickness as required, single-lens shape. Optical / electrical data: transmittance 90%-95%. Coating: Uncoated or Coated; surface quality as required. 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 | Fresnel Lens |
| Shape | Single-lens |
| Diameter | 210.0+/-0.1mm |
| Thickness | as required |
| Transmittance | 90%-95% |
| Coating | Uncoated or Coated |
| Surface quality | as required |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Materials | Optical Glass or Plastic. |
| Focal length | as required |
| Ridges | as required |
| Supplier | CPG OPTICS LIMITED |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — listed as “210.0+/-0.1mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “as required”; quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “Uncoated or Coated”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Fused Silica Wafer Production: A Step-by-Step Manufacturing Guide. 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).
