Product type: Achromatic. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
40mm (VIS MgF2) Single Layer Coated Optical Achromatic Doublets: an optical lens made from Optical Glass. Listed geometry: diameter 40.000+0.000/-0.025mm, thickness Mitutoyo micrometer, doublet lens shape. Optical / electrical data: transmittance 90%-95%. Coating: Single Layer Mgf2; surface quality Naked eye test& 15W LED cold light; flatness ZYGO interferometer. 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 | Achromatic |
| Shape | Doublet Lens |
| Diameter | 40.000+0.000/-0.025mm |
| Thickness | Mitutoyo micrometer |
| Transmittance | 90%-95% |
| Coating | Single Layer Mgf2 |
| Surface quality | Naked eye test& 15W LED cold light |
| Flatness | ZYGO interferometer |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Center thickness | 12.50+/-0.20mm |
| R1 | 98.66mm,CX |
| R2=R3 | 70.73mm,Doublet |
| R4 | 205.72mm,CX |
| All other surfaces | fine ground |
| Centerness | <1arcmin |
| Chamfer | protected |
| S2&S3 | uncoated |
| Standard | MIL-PRF-13830B |
| Inspection | Control items |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Description | |
|---|---|
| Material: | Schott N-BK7 |
| Schott N-SF5 | |
| Diameter: | 40.000+0.000/-0.025mm |
| Center thickness: | 12.50+/-0.20mm |
| R1: | 98.66mm,CX |
| R2=R3: | 70.73mm,Doublet |
| R4: | 205.72mm,CX |
| Surface quality: | S1&S2&S3&S4:40-20 |
| All other surfaces:fine ground | |
| Centerness: | <1arcmin |
| Clear aperture: | S1&S2&S3&S4:>D39.00mm |
| Chamfer: | protected |
| S2&S3:uncoated | |
| Standard: | MIL-PRF-13830B |
| Control items | Inspection instrument/method |
|---|---|
| Diameter: | Mitutoyo vernier caliper |
| Thickness: | Mitutoyo micrometer |
| Flatness: | ZYGO interferometer |
| Surface quality: | Naked eye test& 15W LED cold light |
| Centerness: | TRIOPTICS centration measurement or CPG customized instrument |
| Chamfer: | Magnifier X10& naked eye test |
| Coating: | Agilent Cary 7000 |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — listed as “40.000+0.000/-0.025mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “Naked eye test& 15W LED cold light”; 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 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 Infrared Window Glass for Smart Home Appliance Sensors. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Infrared Windows.
