Product type: Convex Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
Dia4mm N-LASF34 Uncoated Optical Plano Convex Lens is an optical lens made from Optical Glass. Listed geometry: diameter 4.00+0.00/-0.02mm, single-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 | Convex Lens |
| Shape | Single-lens |
| Diameter | 4.00+0.00/-0.02mm |
| Transmittance | 90%-95% |
| Coating | HMC |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Specifications | Items |
| Center thickness | 2.51+/-0.02mm |
| ROC1 | infinity |
| ROC2 | 2.45+/-0.01mm,CX |
| circumference | fine ground |
| Centerness | 4/10arcmin |
| Standard | ISO 10110 |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Plano-convex lens | Material: | Schott N-LASF34 |
| Diameter: | 4.00+0.00/-0.02mm | |
| Center thickness: | 2.51+/-0.02mm | |
| ROC1: | infinity | |
| ROC2: | 2.45+/-0.01mm,CX | |
| S1:3/1(0.2) | ||
| S2:-(0.5) | ||
| Surface quality: | S1:5/2×0.063;L2x0.01;E0.3 | |
| S2:5/3×0.063;L5x0.01;E0.3 | ||
| circumference:fine ground | ||
| Centerness: | 4/10arcmin | |
| Clear aperture: | S1:>D2.5mm | |
| S2:>D3.3mm | ||
| Chamfer: | S1:0.1-0.3mmx45deg | |
| S2:protected | ||
| Coating: | uncoated | |
| Standard: | ISO 10110 |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — listed as “4.00+0.00/-0.02mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — 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 Other Glass Materials for Machined 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).
