Product type: Convex Lens. Application: Lighting, Medical, Optical, Photography, Astronomy. Model: PCX lens.
Overview
The Dia50.8mm FL=500mm Standard Optical Plano Convex Lens is supplied as an optical lens made from Optical Glass. Listed geometry: diameter 50.8+0.0/-0.1mm, single-lens shape. Optical / electrical data: transmittance 90%-95%. Coating: HMC; surface quality 40-20. Typical applications: 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 | Convex Lens |
| Shape | Single-lens |
| Diameter | 50.8+0.0/-0.1mm |
| Transmittance | 90%-95% |
| Coating | HMC |
| Surface quality | 40-20 |
| Clear aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Model NO. | PCX lens |
| Lenses Color | Clear |
| Specifications | Items |
| Edge thickness | 3.0+/-0.1mm |
| ROC1 | 228.51mm,CX |
| ROC2 | infinity |
| Centerness | <3arcmin |
| Chamfer | <0.25mmx45deg |
| AR coating,Rabs<0.5%@700-900nm,AOI | 0deg |
| Standard | MIL-PRF-13830B |
| Inspection | Control code |
| Angle | Reflection goniometer |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Plano Convex Lens | Material: | Schott N-BK7 |
| Diameter: | 50.8+0.0/-0.1mm | |
| Edge thickness: | 3.0+/-0.1mm | |
| ROC1: | 228.51mm,CX | |
| ROC2: | infinity | |
| Surface quality: | 40-20 | |
| Centerness: | <3arcmin | |
| Clear aperture: | >90% | |
| Chamfer: | <0.25mmx45deg | |
| Standard: | MIL-PRF-13830B |
| Control code | Control items | Inspection instrument/method |
| CPG | Diameter: | Mitutoyo Vernier caliper |
| Surface Quality: | Naked eye test& 15W LED cold light | |
| Flatness: | ZYGO 4"interferometer | |
| Angle: | Reflection goniometer | |
| Chamfer: | Magnifier X6& 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 “50.8+0.0/-0.1mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “40-20”; quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “3.0+/-0.1mm”; 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 Selecting Fused Silica and Quartz Glass for Precision Components. 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).
