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Fused Silica Biconcave Lenses |
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These biconcave lenses
are used when a very high negative power is required. They can be used alone
to produce a diverging cone of light or in combination with other lenses. Negative lenses are often
quite thick. Sharp edges, which are common in negative lenses, are removed by
beveling to reduce the likelihood of chipping. UV grade synthetic fused
silica lenses are offered uncoated - however a wide range of standard anti-reflection coatings is available for these lenses. |
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Specifications & Tolerances
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Focal
length: |
±1% |
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Thickness:
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±0.1mm |
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Surface
quality: |
20-10 |
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Material:
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Synthetic
Fused Silica, UV grade |
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Diameter:
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+0,
-0.1mm |
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Centration:
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<1arcmin |
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Aperture:
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>90% |
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Coating:
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Optional
(see coatings section) |
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For antireflection coatings append appropriate
suffix. For other focal lengths or diameters please call. |
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Fused Silica Biconcave Lenses
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Diameter, D (mm) |
Focal Length (mm) |
Thickness |
Availability |
Price |
PRODUCT NUMBER |
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Center,tc (mm) |
Edge,te (mm) |
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10.0 |
-9.7 |
2.0 |
5.0 |
from stock |
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018-0040 |
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10.0 |
-19.7 |
2.0 |
3.4 |
from stock |
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018-0050 |
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10.0 |
-24.7 |
2.0 |
3.1 |
2 weeks |
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018-0060 |
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20.0 |
-19.7 |
2.0 |
7.9 |
from stock |
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018-0080 |
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20.0 |
-24.7 |
2.0 |
6.6 |
from stock |
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018-0090 |
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- |
- |
- |
- |
- |
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- |
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20.0 |
-29.7 |
2.0 |
5.8 |
from stock |
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018-0110 |
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25.0 |
-24.7 |
2.0 |
9.4 |
from stock |
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018-0125 |
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25.0 |
-49.7 |
2.0 |
5.5 |
from stock |
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018-0140 |
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25.0 |
-79.7 |
2.0 |
4.1 |
from stock |
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018-0155 |
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25.0 |
-99.7 |
2.0 |
3.7 |
from stock |
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018-0160 |
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- |
- |
- |
- |
- |
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- |
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25.0 |
-149.7 |
2.0 |
3.1 |
from stock |
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018-0180 |
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25.0 |
-199.7 |
2.0 |
2.9 |
from stock |
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018-0190 |
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25.4 |
-24.7 |
2.0 |
9.6 |
from stock |
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018-0245 |
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25.4 |
-29.7 |
2.0 |
8.2 |
from stock |
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018-0250 |
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25.4 |
-39.7 |
2.0 |
6.5 |
from stock |
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018-0258 |
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- |
- |
- |
- |
- |
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- |
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25.4 |
-49.7 |
2.0 |
5.6 |
from stock |
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018-0260 |
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25.4 |
-59.7 |
2.0 |
5.0 |
from stock |
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018-0270 |
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25.4 |
-9.7 |
2.0 |
4.5 |
from stock |
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018-0275 |
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25.4 |
-79.7 |
2.0 |
4.2 |
from stock |
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018-0280 |
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25.4 |
-89.7 |
2.0 |
4.0 |
from stock |
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018-0285 |
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- |
- |
- |
- |
- |
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- |
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25.4 |
-99.7 |
2.0 |
3.8 |
from stock |
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018-0290 |
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25.4 |
-149.7 |
2.0 |
3.2 |
from stock |
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018-0300 |
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25.4 |
-199.7 |
2.0 |
2.9 |
from stock |
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018-0310 |
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30.0 |
-29.7 |
2.0 |
10.9 |
from stock |
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018-0375 |
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30.0 |
-49.7 |
2.0 |
7.0 |
from stock |
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018-0380 |
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- |
- |
- |
- |
- |
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- |
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30.0 |
-99.7 |
2.0 |
4.5 |
2 weeks |
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018-0390 |
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30.0 |
-149.7 |
2.0 |
3.6 |
2 weeks |
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018-0440 |
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30.0 |
-199.7 |
2.0 |
3.2 |
2 weeks |
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018-0450 |
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50.8 |
-59.5 |
3.0 |
15.4 |
from stock |
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018-0668 |
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50.8 |
-69.5 |
3.0 |
13.4 |
from stock |
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018-0670 |
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- |
- |
- |
- |
- |
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- |
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50.8 |
-79.5 |
3.0 |
12.0 |
from stock |
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018-0673 |
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50.8 |
-89.5 |
3.0 |
11.0 |
from stock |
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018-0675 |
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50.8 |
-99.5 |
3.0 |
10.7 |
from stock |
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018-0677 |
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50.8 |
-149.5 |
3.0 |
7.7 |
from stock |
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018-0683 |
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50.8 |
-199.5 |
3.0 |
6.5 |
from stock |
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018-0687 |
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- |
- |
- |
- |
- |
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- |
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50.8 |
-249.5 |
3.0 |
5.8 |
from stock |
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018-0690 |
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50.8 |
-299.5 |
3.0 |
5.3 |
from stock |
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018-0693 |
These biconcave lenses are
suited to a wide variety of general applications including diverging a
collimated laser beam, spreading a beam for detector coverage, and forming virtual
images. The sizes listed are standard and we keep most configurations in stock
at all times for immediate delivery. If you don't see exactly the biconcave
lens that you need, please ask.
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Merci de contacter Infos Photon Lines pour tout renseignement complémentaire. |
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