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Ball Lens |
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A ball lens has a shorter focal length than a normal convex lens (single
lens), so it is mainly used for condensing light.
It is used for applications such as focusing and coupling to optical fibers and collimating emitted light from fibers.
Sapphire can be used in a wide range of wavelengths from ultraviolet to
infrared (0.17 μm to 5.5 μm), and has better environmental resistance than
BK-7.
The product shown is uncoated.
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■Applications |
Coupling lens for fiber optic communication
Endoscope
Barcode scanning
Ball preform for aspherical lenses
Sensor application
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| ■Specifications |
| Material |
BK-7 |
Sapphire |
| Reflactive Index* |
1.51680/nd |
1.7682/nd** |
| 1.51872/ne |
- |
| Design Wavelength |
587.6nm (d-line) |
*Standard value
**As a uniaxial crystal (with the optic axis designated as the c-axis),
birefringence occurs depending on the angle of incidence relative to the
c-axis.
The incident light is separated into two rays ? the ordinary ray (no) and the extraordinary ray (ne) ? each refracted according to its respective refractive index.
When the light is incident parallel to the c-axis, no birefringence occurs, as both rays propagate along the same optical path.
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| ■Tolerance |
| Diameter |
+/-0.05mm |
| Sphericity |
+/-0.05mm |
| Focal Length |
+/-2% |
| Surface Quality |
MIL60-40 |
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| P/N |
Dia. |
F.L. |
Material |
Price
(without tax) |
Price incl.tax |
Note |
| TS-0502O |
Dia.0.5 |
0.287 |
Sappire |
2,500 |
2,750 |
** |
| TS-0503O |
Dia.1.0 |
0.575 |
Sapphire |
2,500 |
2,750 |
| TS-0504O |
Dia.2.0 |
1.5 |
BK-7 |
1,900 |
2,090 |
- |
| TS-0505O |
Dia.3.0 |
2.2 |
BK-7 |
1,900 |
2,090 |
- |
| TS-0506O |
Dia.4.0 |
2.9 |
BK-7 |
1,900 |
2,090 |
- |
| TS-0507O |
Dia.5.0 |
3.7 |
BK-7 |
1,900 |
2,090 |
- |
| TS-0508O |
Dia.6.0 |
4.4 |
BK-7 |
2,000 |
2,200 |
- |
| TS-0509O |
Dia.7.0 |
5.1 |
BK-7 |
2,000 |
2,200 |
- |
| TS-0510O |
Dia.10.0 |
7.33 |
BK-7 |
2,500 |
2,750 |
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*This part will be made-to-order once the stock will be over.
**This part will be obsolete once the stock will be over.
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