Product type: Flat Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
Dia20xL30.09mm CaF2 Super Polished Optical Glass Rod Lenses: an optical lens made from Optical Glass. Listed geometry: diameter 20.0+0.0/-0.1mm, cylindrical shaped lens shape. Optical / electrical data: transmittance 90%-95%. Coating: HMC; surface quality S-D 10-5. 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 | Flat Lens |
| Shape | Cylindrical Shaped Lens |
| Diameter | 20.0+0.0/-0.1mm |
| Transmittance | 90%-95% |
| Coating | HMC |
| Surface quality | S-D 10-5 |
| Parallelism | <1arcmin |
| Clear aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Specifications | Items |
| Length | 30.09+/-0.025mm |
| ROC1 | infinity |
| ROC2 | infinity |
| Chamfer | <0.3mmx45deg |
| Standard | MIL-PRF-13830B |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Rod Lenses | Material: | CaF2 |
| Diameter: | 20.0+0.0/-0.1mm | |
| Length: | 30.09+/-0.025mm | |
| ROC1: | infinity | |
| ROC2: | infinity | |
| Surface quality: | S-D 10-5 | |
| Parallelism: | <1arcmin | |
| Clear aperture: | >90% | |
| Chamfer: | <0.3mmx45deg | |
| Coating: | 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 “20.0+0.0/-0.1mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “S-D 10-5”; quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “<0.3mmx45deg”; state centration and edge chamfer.
- Coating — listed as “HMC”; 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 Fused Silica Glass Wafers for Precision Appliance Electronics. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Infrared Windows.
