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The global sell good quality customized coating fused silica optical glass double concave spherical lens


| Product name | Spherical lens,optical lenses |
| Material | K9, BK7, ZK2,ZK3,ZK6, CDGM, Corning Fused Silica, JGS1,JGS2, Corning 7980,Schott, Ohara |
| Shape | plano convex lens,plano concave lens,double convex lens,double concave lens,meniscus lenses |
| Focal length | ±5mm~1000mm±2% |
| Size | 6mm-300mm |
Thickness tolerance | ±0.2mm |
| Surface quality | 10/5~80/50 |
Beveling | <0.2*4.5° |
Surface accuracy | λ/10~λ/2 |

Principle:
The top of the object is also used as two straight lines: one is parallel to the main optical axis and is deflected into a divergent light after passing through the biconcave lens, returning this refracted light to the main focus in the opposite direction; the other passes through the optical center point of the lens, these two lines The straight lines intersect at one point, this is the image of the object.
Application:
The main applications of biconcave lenses: optical imaging, astronomical observation, scientific research, military industry and other precision instruments.






The global sell good quality customized coating fused silica optical glass double concave spherical lens
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