Essential details
MOQ:100
Shipping:Express
Product Introduction
Double Concave Lenses can diverge the light, its focal length is nedtive, which is made of two concave surfaces with same radius.These lenses are ideal for the application of beam expansion, light projection or the expansion of the focal length. We hobbite always supply the high quality lens,do not hesitate to send inquiry if interested.
| Double Concave Lenses Specification | |
| Double Concave Lens Material | K9,Fused Silica,CaF2,ZnSe |
| Diameter Tolerance | +0.0/-0.1mm |
| Irregularity (P-V) | |
| Centering Tolerance | ＜3′ |
| Bevel | 0.2mmX45° |
| Design Wavelength | 10.6μm |
| Center Thickness Tolerance | ±0.2mm |
| Focal Length Tolerance | ±1% |
| Surface Quality | 40/20-60/40 |