Product type: Flat Lens. Application: Lighting, Medical, Optical, Photography, Astronomy. Model: Rod lens.
Overview
The Dia12XL169.6mm Schott N-BK7 Optical Rod Lenses is supplied as an optical lens made from Optical Glass. Listed geometry: diameter 12.7+0.0/-0.1mm, cylindrical shaped lens shape. Optical / electrical data: transmittance 90%-95%. Coating: HMC. 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 | Flat Lens |
| Shape | Cylindrical Shaped Lens |
| Diameter | 12.7+0.0/-0.1mm |
| Transmittance | 90%-95% |
| Coating | HMC |
| Clear aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Model NO. | Rod lens |
| Lenses Color | Clear |
| Specifications | Items |
| Length | 169.6+/-0.2mm |
| ROC1 | Infinity |
| ROC2 | Infinity |
| Cylindricity | <0.15mm |
| Chamfer | Protected |
| Standard | MIL-PRF-13830B |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Rod Lenses | Material: | Schott N-BK7 |
| Diameter: | 12.7+0.0/-0.1mm | |
| Length: | 169.6+/-0.2mm | |
| ROC1: | Infinity | |
| ROC2: | Infinity | |
| Flatness: | Barrel sides:N/A | |
| Front/back surfaces:N/A | ||
| Surface quality: | Barrel sides:S-D 60-40 | |
| Front/back surfaces:fine ground | ||
| Cylindricity: | <0.15mm | |
| Clear aperture: | >90% | |
| Chamfer: | Protected | |
| 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 “12.7+0.0/-0.1mm”; 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 “HMC”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Fused Silica Wafer Material Selection for Precision Glass Processing. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. 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 Fused Silica Glass Wafers (2–12", JGS1/JGS2).
