Double Concave Lens
Quantity : 20000pcs p Price : $0.5-200.00
A double concave lens/double concave mirror has a negative focal length, thereby causing collimated incident light to diverge. The double concave lens/mirror has an equal radius of curvature on both sides of the lens. They are generally used to expand light or increase focal length in the existing system, such as beam expander and projection systems.
Description Of Double Concave Lens/Mirror
The double concave lens of Ecoptik has a negative focal length, thereby causing collimated incident light to diverge. A double concave lens has an equal radius of curvature on both sides of the lens.
Specifications Of Double Concave Lens/Mirror
|
Material |
Optical glass/ Fused silica/ sapphire etc. |
|
Diameter |
2mm~300mm |
|
Diameter tolerance |
±0.05mm(≤50mm) |
|
±0.1mm(＞50mm) |
|
|
Focal length |
-50mm~-2000mm |
|
Focal length tolerance |
±0.2%（＜10mm） |
|
±0.5%（＜10mm-1000mm） |
|
|
±1%（＜＞1000mm） |
|
|
Center Thickness |
2mm~20mm |
|
Surface quality |
60/40， 40/20， 20/10 |
|
Surface accuracy |
λ/2~λ/10@632.8nm，532nm |
|
Clear Aperture |
>85% dig diameter |
|
Centration |
<3arc min~ 30arc sec</span> |
|
Coating |
As per customer's request |
|
Material |
Diameter |
Surface Radius 1 |
Surface Radius 2 |
Center Thickness |
Focal Length |
|
H-ZK3 |
5 |
-14.4 |
-14.4 |
3 |
-9.8 |
|
H-ZF6 |
8 |
-7.2 |
-30.5 |
5 |
-7.4 |
|
H-K9L |
10 |
-11.1 |
-11.1 |
2 |
-10.4 |
|
JGS1 |
10 |
-9.25 |
-9.25 |
1.25 |
-9.8 |
|
H-ZF7LA |
11 |
-11.9 |
-11.9 |
2 |
-7.1 |
|
H-K9L |
12 |
-25.1 |
-25.1 |
1.26 |
-24 |
|
BAF3 |
12 |
-19.5 |
-47.1 |
2 |
-23.4 |
|
ZF11 |
12 |
-12.6 |
-12.6 |
3 |
-7.4 |
|
H-K9L |
12.5 |
-103 |
-103 |
1.5 |
-98.9 |
|
H-ZF6 |
13 |
-30.6 |
-154 |
3 |
-33.5 |
|
H-LAK7 |
13 |
-48.9 |
-27.7 |
2 |
-24.4 |
|
H-ZK2 |
13 |
-12.1 |
-15.7 |
1 |
-11.3 |
|
H-ZF6 |
13.5 |
-34.7 |
-79.6 |
1.5 |
-31.6 |
|
H-ZF2 |
14 |
-36.2 |
-192 |
3 |
-45 |
|
H-ZF6 |
14 |
-34.7 |
-79.6 |
3 |
-31.6 |
|
H-LAK53A |
14 |
-31.7 |
-58.8 |
1.5 |
-27 |
|
H-K9L |
14 |
-27.9 |
-32.2 |
2 |
-19 |
|
H-ZF6 |
15 |
-23 |
-27.7 |
2.8 |
-16.4 |
|
H-ZF6 |
15 |
-27.5 |
-23.6 |
7.23 |
-16.4 |
|
H-F3 |
15 |
-50.5 |
-11.3 |
1.5 |
-14.8 |
|
N-SF6 |
15 |
-13.2 |
-12.1 |
2 |
-7.4 |
|
H-ZF3 |
16 |
-30.6 |
-15.8 |
3 |
-14.6 |
| <p st |
Contact : Wu Sandy, +86 (431) 8188 4163
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