Aspheric Lenses
These lenses are ideally
suited to condensing and light collection applications. For these purposes it
is necessary to locate the optic as close as possible to the source or detector
in order to benefit from a large numerical aperture collection cone. These
aspheric lenses are flat or convex spherical on one side and have a steep
aspheric on the other side. |
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The lenses are molded and
polished from high quality crown optical glass. They are supplied uncoated.
Coating is not recommended since coatings work poorly on steep aspherics as the
angle of incidence is widely variable across the diameter of the lens. In any
event, ghost reflections are rarely a problem in condensing applications.
Specifications & Tolerances
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Focal
length: |
±7% |
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Thickness:
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±0.5mm |
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Material:
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B270
optical glass |
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Diameter: |
±0.5mm |
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Surface quality: |
60-40 |
Aspheric Lenses
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Focal Length (mm) |
Diameter |
Rear Suface Shape |
Numerical Aperture |
Thickness |
Price |
Avilability |
Product Number |
||
|
(inch) |
(mm) |
Center, tc (mm) |
Edge, te (mm) |
||||||
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8.5 |
0.47 |
12.0 |
convex |
0.70 |
5.5 |
3.1 |
|
from stock |
023-2220 |
|
10.5 |
0.47 |
12.0 |
plano |
0.57 |
3.5 |
1.1 |
|
from stock |
023-2230 |
|
12.0 |
0.71 |
18.0 |
convex |
0.75 |
8.8 |
4.7 |
|
from stock |
023-2250 |
|
15.5 |
0.71 |
18.0 |
plano |
0.58 |
7.0 |
3.0 |
|
from stock |
023-2260 |
|
17.0 |
0.75 |
19.0 |
plano |
0.56 |
7.0 |
1.8 |
|
from stock |
023-2270 |
|
- |
- |
- |
- |
- |
- |
- |
|
- |
- |
|
18.0 |
0.94 |
24.0 |
plano |
0.67 |
10.0 |
1.5 |
|
from stock |
023-2290 |
|
20.0 |
0.98 |
25.0 |
plano |
0.62 |
7.5 |
1.2 |
|
from stock |
023-2340 |
|
23.5 |
1.18 |
30.0 |
plano |
0.64 |
11.0 |
3.8 |
|
from stock |
023-2380 |
|
26.5 |
1.18 |
30.0 |
plano |
0.57 |
11.0 |
2.6 |
|
from stock |
023-2390 |
|
23.5 |
1.28 |
32.5 |
convex |
0.69 |
13.5 |
3.0 |
|
from stock |
023-2392 |
|
- |
- |
- |
- |
- |
- |
- |
|
- |
- |
|
34.5 |
1.50 |
38.0 |
plano |
0.55 |
12.0 |
1.5 |
|
from stock |
023-2440 |
|
39.0 |
1.97 |
50.0 |
plano |
0.64 |
21.5 |
1.5 |
|
from stock |
023-2550 |
|
49.0 |
1.97 |
50.0 |
convex |
0.51 |
14.3 |
2.2 |
|
from stock |
023-2570 |
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Merci de contacter Infos Photon Lines pour tout renseignement complémentaire. |
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