Meniscus Lenses
Biconcave lenses have negative focal lengths and form virtual images.
Meniscus Lenses
Specifications: |
 |
| Material |
BK7 grade A optical glass or Fused silica |
| Design Wavelength |
546.1nm |
| Design Index |
1.5183 ±0.0005 |
| Diameter Tolerance |
+0.0, -0.15mm |
| Paraxial Focal Length |
±2% |
| Centration Tolerance |
3 arc minutes |
| Clear Aperture |
>85% |
| Surface Figure |
λ/4 @ 632.8nm |
| Surface Quality |
60-40 Scratch and Dig |
| Bevel |
0.25 mm x 45° |
List of Product Tables
| Part No. |
Focal Length (mm) |
Diameter (mm) |
Material |
Description |
| XLM-001 |
10.0 |
6.0 |
BK7 |
Standard |
| XLM-002 |
10.0 |
8.0 |
BK7 |
Standard |
| XLM-003 |
10.0 |
6.0 |
SF8 |
Standard |
| XLM-004 |
12.5 |
7.5 |
BK7 |
Standard |
| XLM-005 |
12.5 |
12.5 |
BK7 |
Standard |
| XLM-006 |
12.0 |
15.0 |
BK7 |
Standard |
| XLM-007 |
12.0 |
17.0 |
BK7 |
Standard |
| XLM-008 |
130.0 |
19.0 |
SF8 |
Standard |
| XLM-009 |
-150.0 |
20.0 |
BK7 |
Standard |
| XLM-010 |
151.0 |
20.0 |
SF8 |
Standard |
| XLM-011 |
50.0 |
20.0 |
BK7 |
Standard |
| XLM-012 |
-100.0 |
25.4 |
BK7 |
Standard |
| XLM-013 |
-150.0 |
25.4 |
BK7 |
Standard |
| XLM-014 |
200.0 |
30.0 |
BK7 |
Standard |
| XLM-015 |
175.2 |
42.0 |
SF8 |
Standard |
| XLM-016 |
-250.0 |
50.0 |
BK7 |
Standard |
| XLM-017 |
250.0 |
50.8 |
BK7 |
Standard |
| XLM-018 |
-2000.0 |
50.8 |
BK7 |
Standard |
| XLM-019 |
53.0 |
60.0 |
BK7 |
Standard |
| XLM-020 |
50.0 |
75.0 |
BK7 |
Standard |
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Lenses
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