Product type: Convex Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
Dia25mm Mgf2 Coating Optical Positive Achromatic Lens: an optical lens made from Optical Glass. Listed geometry: diameter 25.0+0.0/-0.025mm, cemented shape. Optical / electrical data: transmittance 90%-95%. Coating: Mgf2 Coating. 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 | Convex Lens |
| Shape | Cemented |
| Diameter | 25.0+0.0/-0.025mm |
| Transmittance | 90%-95% |
| Coating | Mgf2 Coating |
| Clear Aperture | >D24.0mm |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Center thickness | 9.0+/-0.2mm |
| ROC1 | 34.53mm,CX |
| ROC2=ROC3 | 21.98mm,Doublet |
| ROC4 | 214.63mm,CC |
| Centerness | <3arcmin |
| Chamfer | protected |
| Standard | MIL-PRF-13830B |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Achromatic Doublet | Material: | Schott N-BaF10 |
| Schott N-SF10 | ||
| Diameter: | 25.0+0.0/-0.025mm | |
| Center thickness: | 9.0+/-0.2mm | |
| ROC1: | 34.53mm,CX | |
| ROC2=ROC3: | 21.98mm,Doublet | |
| ROC4: | 214.63mm,CC | |
| Surface quality: | S1&S2&S3&S4:40-20 | |
| Centerness: | <3arcmin | |
| Clear Aperture: | >D24.0mm | |
| Chamfer: | protected | |
| 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/-0.025mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “protected”; state centration and edge chamfer.
- Coating — listed as “Mgf2 Coating”; 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 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 Infrared Windows.
