Specifications
Lenses1.high accuracy
2.reasonable price
3.high quality
4.This is widely used for focusing and the formation of image.
Plano Concave Lenses
Specifications
- have negative focal lengths
- diverge collimated incident light
- forms only virtual images which are seen through the lens
- reduce spherical aberration, coma and distortion at negative-infinite or near-infinite conjugate ratios
- with the concave surface facing the longest conjugate distance
These lenses are thicker at the edge than in the centre and flat on one side. The plano-concave lenses are used to expand light beams or to increase focal lengths in optical systems. They are often employed for beam expansion of high peak power pulsed lasers. A beam incident on a concave surface will be focused to a point outside the instrument.
| Material | BK7, H-K9L ,UV fused silica,Corning7980 |
| focal length | +/-2% |
| Diameter | 5-120mm +0.0/-0.2 |
| Center thickness | 1.2-60mm +/-0.1 |
| Centering Accuracy | 3' |
| Figure (sphericity) | 1~5 |
| Surface Quality | 10-5,40-20,60/40 |
| Coating | optional |
There are other products supplied.
Our company:
We are an manufacturer and have our own factory.Our main lens are plano concave and convex,double concave,double convex, cylindrical lens ,mensicus lens etc, we believe you can get superior products and best service.
We are specialized in the production of various specifications of optical components according to the customers' demand, And we are committed our standard more than eight years to offering our customers with excellent products, reasonable prices and high level of service.
Welcome to China and visit our factory. Hope that our cooperation ever lasting!