Achromatic Lens
Specification:
| Material | BK7 grade A optical glass |
| Design Wavelength | 480.0nm,546.1nm,643.8 nm |
| Diameter Tolerance | +0.0, -0.15 mm |
| Thickness Tolerance | ±0.2 mm |
| Paraxial Focal Length | ±2% @546.1 nm |
| 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° |
Positive Achromatic Lens Standard Products:
|
Part No. |
f (mm) | Ф (mm) | R1 (mm) |
R2=R3 (mm) |
R4 (mm) |
tc1 (mm) |
t c2 (mm) |
f b (mm) |
Lens |
Lens B |
|
TPA101 |
10.0 |
6.0 |
6.546 |
-4.055 |
-23.23 |
3.6 |
0.8 |
7.54 |
SK9 |
SF15 |
|
TPA102 |
20.0 |
10.0 |
12.32 |
-0.902 |
-25.23 |
3.8 |
1.0 |
17.625 |
BK7 |
SF5 |
|
TPA103 |
30.0 |
12.7 |
18.535 |
-13.49 |
-37.84 |
4.0 |
1.3 |
27.36 |
BK7 |
SF5 |
|
TPA104 |
40.0 |
12.7 |
25.23 |
-17.539 |
-48.75 |
3.4 |
1.3 |
37.778 |
BK7 |
SF5 |
|
TPA105 |
50.0 |
18.0 |
31.69 |
-22.0 |
-60.57 |
4.8 |
1.5 |
46.987 |
BK7 |
SF5 |
Note: Other size, material and coating are available upon request.
Negative Achromatic Lens Standard Products:
|
Part No. |
f (mm) | Ф (mm) | R1 (mm) |
R2=R3 (mm) |
R4 (mm) |
tc1 (mm) |
t c2 (mm) |
f b (mm) |
Lens |
Lens B |
|
TNA101 |
-25 |
12.7 |
-15.6 |
13.09 |
44.16 |
3.0 |
2.67 |
-27.5 |
BK7 |
F2 |
|
TNA102 |
-40 |
12.7 |
-24.45 |
17.97 |
66.6 |
3.0 |
2.34 |
-42.5 |
BK7 |
F2 |
Note: Other size, material and coating are available upon request.