Product type: Achromatic Lens. Application: Lighting, Medical, Optical, Photography, Astronomy. Model: Achromatic lens.
Overview
The Infrared Achromatic Optical Lens for Aberration Correction is supplied as an optical lens made from Optical Glass. Listed geometry: diameter 25.0+0.0/-0.1mm, doublet lens shape. Optical / electrical data: transmittance 90%-95%. Coating: Anti-Reflection; surface quality S-D 20-10; flatness RMS<0.02L. 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 |
| Transmittance | 90%-95% |
| Coating | Anti-Reflection |
| Surface quality | S-D 20-10 |
| Flatness | RMS<0.02L |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Model NO. | Achromatic lens |
| Lenses Color | Clear |
| Cementing | NOA 61 or structure glue |
| Diameter(mm) | 25.0+0.0/-0.1mm |
| Center thickness CT(mm) | 9.5 |
| Center thickness tolerance(mm) | +/-0.1 |
| Effective focal length EFL(mm) | 75.0 |
| Back focal length BFL(mm) | 70.39 |
| Focal Length Tolerance(%) | +/-2 |
| Radius R1(mm) | 46.44 |
| Radius R2(mm) | 33.77 |
| Radius R3(mm) | -33.77 |
| Radius R4(mm) | -95.94 |
| Centering(mm) | 3 |
| Bevel | protected |
| Clear aperture(mm) | >90% |
| Standard | MIL-PRF-13830B |
| Inspection | Packaging& Shipping |
| Package detail | Optics are packed with Capacitor paper, white paper, custom-made plastic containers etc |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Material: | N-BK7/N-SF5 or customized |
|---|---|
| Diameter(mm): | 25.0+0.0/-0.1mm |
| Center thickness CT(mm): | 9.5 |
| Center thickness tolerance(mm): | +/-0.1 |
| Effective focal length EFL(mm): | 75.0 |
| Back focal length BFL(mm): | 70.39 |
| Focal Length Tolerance(%): | +/-2 |
| Radius R1(mm): | 46.44 |
| Radius R2(mm): | 33.77 |
| Radius R3(mm): | -33.77 |
| Radius R4(mm): | -95.94 |
| Surface Quality: | S-D 40-20 |
| Centering(mm): | 3 |
| Bevel: | protected |
| Clear aperture(mm): | >90% |
| 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 — listed as “S-D 20-10”; quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “protected”; state centration and edge chamfer.
- Coating — listed as “Anti-Reflection”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see AR-Coated Glass Materials for High-Transmission Optical Parts. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. For an application example, read AR Coated Glass for Appliance Touch Screens: Specs and Selection. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is AR-Coated High-Transparency Optical Glass.
