What are Plano-convex lenses?
It has a positive focal length and is most suitable where one conjugate is more than five times the other, e.g. in sensor applications or for use with near collimated light, also where both conjugates are on the same side of the lens, e.g. as an add-on lens to increase the numerical aperture.
Manufacture of Plano-convex lenses
As a professional supplier of lenses in China, Photonchina has produced both standard types and custom plano-convex lenses for decades. We have a great deal of experience in production and also exert stringent quality control for the whole fabrication process below,
- First cut of glass blank into shape.
- Grinding that improves the surface and shape.
- Polishing where should be the last fine grinding stage to put the surface and shape of lenses into specification.
- Centering the optics and the bevels are put on the edges.
- Optical coating.
Photonchina’ plano-convex lenses have excellent shape, with best centration and flatness, and can be used either for focusing collimated light or for collimating a point source. Our plano-convex lenses are fabricated from N-BK7, Silicon, UV-fused silica, Sapphire, Calcium Fluoride, Magnesium Fluoride.
Plano-Concave Lens Specifications |
|
| Material | Optical Glass or others |
| Surface Flatness | λ/10@632.8nm |
| Surface Quality | 10/5 |
| Centration Error | ≤3 arc min. |
| Diameter Tolerance | +0.0/-0.05mm |
| Thickness Tolerance | ±0.05mm |
| Focal Length Tolerance | ±2% |
| Clear Aperture | >90% of diameter |
| Chamfer | Protective |
| Coating | Upon customer request |
