Plano-Concave Lenses
Plano-concave lenses are always negative. They are used to diverge collimated incident light or to form virtual images which are seen by looking through the lens.
Plano-concave lenses are often used to increase focal lengths in existing optical systems.
Plano-Concave 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 |
| XLC-021 |
-10.0 |
5.0 |
BK7 |
Standard |
| XLC-022 |
-10.0 |
8.0 |
BK7 |
Standard |
| XLC-023 |
-10.0 |
6.0 |
Fused silica |
Standard |
| XLC-024 |
-12.5 |
7.5 |
BK7 |
Standard |
| XLC-025 |
-12.5 |
12.5 |
BK7 |
Standard |
| XLC-026 |
-125.0 |
12.5 |
Fused silica |
Standard |
| XLC-027 |
-200.0 |
12.5 |
BK7 |
Standard |
| XLC-028 |
-15.0 |
12.5 |
Fused silica |
Standard |
| XLC-029 |
-175.0 |
12.7 |
BK7 |
Standard |
| XLC-030 |
-18.0 |
15.0 |
BK7 |
Standard |
| XLC-031 |
-50.0 |
20.0 |
BK7 |
Standard |
| XLC-032 |
-100.0 |
25.4 |
BK7 |
Standard |
| XLC-033 |
-200.0 |
25.4 |
BK7 |
Standard |
| XLC-034 |
-2000.0 |
25.4 |
BK7 |
Standard |
| XLC-035 |
-200.0 |
30.0 |
BK7 |
Standard |
| XLC-036 |
-1500.0 |
50.0 |
BK7 |
Standard |
| XLC-037 |
-300.0 |
50.8 |
Fused silica |
Standard |
| XLC-038 |
-325.0 |
50.8 |
Fused silica |
Standard |
| XLC-039 |
-750.0 |
50.8 |
BK7 |
Standard |
| XLC-040 |
-335.0 |
50.8 |
BK7 |
Standard |