Product type: Achromatic Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
Diameter 50mm Single Layer (MgF2 VIS) Coated Optical Doublet Achromatic Lens is an optical lens made from Optical Glass. Listed geometry: diameter 50.000+0.000/-0.025mm, doublet lens shape. Optical / electrical data: transmittance 90%-95%. Coating: Single Layer Mgf2. 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 | Achromatic Lens |
| Shape | Doublet Lens |
| Diameter | 50.000+0.000/-0.025mm |
| Transmittance | 90%-95% |
| Coating | Single Layer Mgf2 |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Specifications | Items |
| Center thickness | 13.50+/-0.20mm |
| ROC1 | 96.85mm,CX |
| ROC2=ROC3 | 73.74mm,Doublet |
| ROC4 | 241.63mm,CX |
| All other surfaces | fine ground |
| Centerness | <1arcmin |
| Chamfer | protected |
| Ravg<1.75%@400-700nm,AOI | 0deg |
| S2&S3 | uncoated |
| Standard | MIL-PRF-13830B |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Doublet Lens | Material: | Schott N-BaK4 |
| Schott N-SF10 | ||
| Diameter: | 50.000+0.000/-0.025mm | |
| Center thickness: | 13.50+/-0.20mm | |
| ROC1: | 96.85mm,CX | |
| ROC2=ROC3: | 73.74mm,Doublet | |
| ROC4: | 241.63mm,CX | |
| Surface quality: | S1&S2&S3&S4:40-20 | |
| All other surfaces:fine ground | ||
| Centerness: | <1arcmin | |
| Clear aperture: | S1&S2&S3&S4:>D49.00mm | |
| Chamfer: | protected | |
| S2&S3:uncoated | ||
| 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 “50.000+0.000/-0.025mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “fine ground”; quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “protected”; state centration and edge chamfer.
- Coating — listed as “Single Layer Mgf2”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Fused Silica and Other Glass Materials for Machined Components. How parts like this are machined and finished is covered in Flat Glass Polishing Process for Precision Substrates. 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.
