Material: Bk7, Fused Silica, Silicon, Sapphire, Germanium, CaF2, MgF2
Specifications
| Material |
Bk7, (other material upon request) |
| Focal Length Tolerance |
2% |
| Fringes |
1-5 |
| Fringes Irregularity |
0.2-0.5 |
| Diameter Tolerance |
+0.0/-0.10 mm |
| Center Thickness(Tc) Tolerance |
+0.0/-0.10 mm |
| Centration |
3 arc minutes |
| Clear Aperture |
90% |
| Surface Quality: |
60-40 scratch and dig |
| Coating |
MgF2 AR Coateds |
Product List
| Product
No. |
Diameter
(mm)
|
Focal
Length (mm)
|
R
(mm)
|
Center
Thickness Tc (mm)
|
Edge
Thickness Te (mm)
|
| LPA101 |
10.0
|
-25.4
|
-12.912
|
1.5
|
2.51
|
| LPA102 |
10.0
|
-31.5
|
-16.27
|
1.5
|
2.29
|
| LPA103 |
10.0
|
-40.0
|
-20.65
|
1.5
|
2.11
|
| LPA104 |
10.0
|
-63.0
|
-32.51
|
1.5
|
1.89
|
| LPA251 |
25.4
|
-25.4
|
-13.112
|
2.0
|
11.16
|
| LPA252 |
25.4
|
-31.5
|
-16.27
|
2.0
|
7.86
|
| LPA253 |
25.4
|
-40.0
|
-20.65
|
2.0
|
6.21
|
| LPA254 |
25.4
|
-63.0
|
-32.51
|
2.0
|
4.50
|
| LPA255 |
25.4
|
-160.0
|
-82.60
|
2.0
|
2.95
|
| LPA256 |
25.4
|
-500.0
|
-258.20
|
2.0
|
2.30
|
| LPA257 |
25.4
|
-1000.0
|
-516.4
|
2.0
|
2.15
|
| LPA401 |
40.0
|
-63.0
|
-32.51
|
2.5
|
9.38
|
| LPA402 |
40.0
|
-160.0
|
-82.60
|
2.5
|
4.96
|
| LPA403 |
40.0
|
-500.0
|
-258.2
|
2.5
|
3.28
|
| LPA501 |
50.0
|
-160.0
|
-82.60
|
3.0
|
6.87
|
| LPA502 |
50.0
|
-500.0
|
-258.2
|
3.0
|
4.21
|
Note: Special material and size are available
upon request.