Product type: Concave Lens. Application: Optical. Model: DCC lens.
Overview
Fused Silica Dia25mm Coated DCC Optical Lens: an optical lens made from Optical Glass. Listed geometry: diameter 25.0+0.0/-0.1mm. Optical / electrical data: transmittance >95%. Typical applications: Optical. 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 |
| Diameter | 25.0+0.0/-0.1mm |
| Transmittance | >95% |
| Clear aperture | >90% |
| Usage | Optical |
| Model NO. | DCC lens |
| Lenses Color | Clear |
| Specifications | Items |
| Center thickness | 2.0+/-0.1mm |
| ROC1 | 22.85mm,CC |
| ROC2 | 22.85mm,CC |
| Centerness | <3arcmin |
| Chamfer | <0.25mmx45deg |
| Standard | MIL-PRF-13830B |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Biconcave Lens | Material: | Fused Silica |
| Diameter: | 25.0+0.0/-0.1mm | |
| Center thickness: | 2.0+/-0.1mm | |
| ROC1: | 22.85mm,CC | |
| ROC2: | 22.85mm,CC | |
| Surface quality: | S1&S2:10-5 | |
| Centerness: | <3arcmin | |
| Clear aperture: | >90% | |
| Chamfer: | <0.25mmx45deg | |
| Standard: | MIL-PRF-13830B |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — listed as “25.0+0.0/-0.1mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “<0.25mmx45deg”; state centration and edge chamfer.
- Coating — list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Fused Silica Wafer Material Selection for Precision Glass Processing. 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).
