Material: Bk7, Fused Silica, Germanium, Silicon, Sapphire, CaF2, MgF2
Specifications
| Material |
Bk7, (other material upon request) |
| Focal Length Tolerance |
2% |
| Fringes |
1-5 |
| Fringes Irregularity |
0.2-0.5 |
| Diameter Tolerance |
±0.10 mm |
| Center Thickness(Tc) Tolerance |
±0.10 mm |
| Centration |
3 arc minutes |
| Clear Aperture |
90% |
| Surface Quality: |
60-40 scratch and dig |
| Coating |
Single-layer MgF2 AR Coateds |
Product list
| Product
No. |
Diameter
(mm)
|
Focal
Length f (mm)
|
fb
|
Center
Thickness Tc (mm)
|
Edge
Thickness Te (mm)
|
|
LDX101
|
10.0
|
15.0
|
13.7
|
4.2
|
2.5
|
|
LDX102
|
10.0
|
30.0
|
28.7
|
3.9
|
3.0
|
|
LDX201
|
20.0
|
30.0
|
28.0
|
5.9
|
2.5
|
|
LDX202
|
20.0
|
40.0
|
37.9
|
5.0
|
2.5
|
|
LDX203
|
20.0
|
60.0
|
59.0
|
4.7
|
3.0
|
|
LDX204
|
20.0
|
75.0
|
73.7
|
4.4
|
3.0
|
|
LDX205
|
25.4
|
50.8
|
49.1
|
6.0
|
2.8
|
|
LDX206
|
25.4
|
100.0
|
98.5
|
5.0
|
3.4
|
|
LDX207
|
25.4
|
150.0
|
148.6
|
5.0
|
4.0
|
|
LDX208
|
25.4
|
175.0
|
172.7
|
5.0
|
4.1
|
|
LDX301
|
30.0
|
60.0
|
57.6
|
7.0
|
3.3
|
|
LDX302
|
30.0
|
120.0
|
118.7
|
5.0
|
3.2
|
|
LDX303
|
30.0
|
180.0
|
178.5
|
5.0
|
3.8
|
|
LDX304
|
30.0
|
250.0
|
248.0
|
5.0
|
4.1
|
|
LDX305
|
30.0
|
300.0
|
298.1
|
5.0
|
4.3
|
|
LDX401
|
40.0
|
100.0
|
97.0
|
8.0
|
4.0
|
|
LDX402
|
40.0
|
150.0
|
148.5
|
6.0
|
4.0
|
|
LDX403
|
40.0
|
250.0
|
247.9
|
5.6
|
4.0
|
|
LDX501
|
50.8
|
150.0
|
148.1
|
8.0
|
3.8
|
|
LDX502
|
50.8
|
250.0
|
248.8
|
6.0
|
3.5
|
|
LDX503
|
50.8
|
400.0
|
398.2
|
6.0
|
4.4
|
Note: Special material and size are available
upon request.