Meniscus Lens
Positive Meniscus Lens：
| Material | BK7 grade A optical glass |
| Design Wavelength | 546.1 nm |
| Design Index: | 1.5183 ± 0.0005 |
| Diameter Tolerance | +0.00, -0.15 mm |
| Thickness Tolerance | ±0.2 mm |
| Paraxial Focal Length | ±2% |
| Centration | <3 arc minutes |
| Clear Aperture | >85% |
| Surface Irregularity | λ/4@632.8 nm |
| Surface Quality | 60-40 scratch and dig |
| Protective Bevel | 0.25 mm x 45° |
BK7 Positive Meniscus Lens Standard Products:
|
Part No. |
f (mm) |
Ф(mm) |
R1 (mm) |
R2(mm) |
t c(mm) |
t e(mm) |
f b(mm) |
|
TPM101 |
100.0 |
25.4 |
33.72 |
90.0 |
4.0 |
2.5 |
97.5 |
|
TPM102 |
125.0 |
25.4 |
38.47 |
90.0 |
4.0 |
2.8 |
121.8 |
|
TPM103 |
150.0 |
25.4 |
42.52 |
90.0 |
4.0 |
3.0 |
146.3 |
|
TPM104 |
175.0 |
25.4 |
46.05 |
90.0 |
4.0 |
3.1 |
171.2 |
Note: Other material, size and coating are available upon request.
Negative Meniscus Lens：
| Material | BK7 grade A optical glass |
| Design Wavelength | 546.1 nm |
| Design Index: | 1.5183 ± 0.0005 |
| Diameter Tolerance | +0.00, -0.15 mm |
| Paraxial Focal Length | ±2% |
| Centration | <3 arc minutes |
| Clear Aperture | >85% |
| Surface Irregularity | λ/4@632.8 nm |
| Surface Quality | 60-40 scratch and dig |
| Protective Bevel | 0.25 mm x 45° |
BK7 Negative Meniscus Lens Standard Products:
|
Part No. |
f (mm) |
Ф(mm) |
R1 (mm) |
R2(mm) |
t c(mm) |
t e(mm) |
f b(mm) |
|
TNM101 |
-100.0 |
25.4 |
90.0 |
32.59 |
3.0 |
4.5 |
-99.2 |
|
TNM102 |
-125.0 |
25.4 |
90.0 |
37.26 |
3.0 |
4.2 |
-123.7 |
|
TNM103 |
-150.0 |
25.4 |
90.0 |
41.42 |
3.0 |
4.0 |
-149.5 |
|
TNM104 |
-175.0 |
25.4 |
90.0 |
44.86 |
3.0 |
3.8 |
-174.6 |
Note: Other material, size and coating are available upon request.
