Microspheres
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Microspheres are convenient
for coupling light into or out of fibers as well as for relaying images in
compact areas. The focal point of a sphere is very close to its surface so the
sphere can be placed in contact with the fiber or another sphere for almost
perfect coupling. Three different coatings are available. All are single layer
MgF2 coatings which have been optimized for the visible range or
either of the two diode laser bands. If a coated Microsphere is chosen it will
be necessary to maintain the coating axis when in use. This axis is marked with
a removable black dot for ease of location.
Specifications & Tolerances
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Focal
length: |
±1% @
633nm |
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Sphericity:
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Material:
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LaSFN9
optical glass |
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Diameter: |
±0.001mm |
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Surface quality: |
20-10 |
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When using spherical
lenses for coupling the slight defocusing that occurs when the fiber is made
to contact the surface of the sphere will often reduce the spherical aberration
to more acceptable levels. The result is fortuitous: reduced aberrations and
simplified mounting requirements. |
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Microspheres
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Focal Length (mm) |
Diameter, D |
Price |
Availability |
Product Number |
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(inch) |
(mm) |
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0.5 |
0.04 |
1.0 |
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from stock |
025-0110 |
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1.1 |
0.08 |
2.0 |
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from stock |
025-0120 |
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1.7 |
0.12 |
3.0 |
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from stock |
025-0130 |
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2.8 |
0.20 |
5.0 |
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from stock |
025-0140 |
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4.5 |
0.31 |
8.0 |
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from stock |
025-0150 |
For SLAR
antireflection coatings append appropriate suffix and add $10 to the price.
- for 400-700nm append -A27
- for 700-900nm append -A38
- for 1300-1550nm append -A67
Please ask us to quote for
OEM quantities.
The most common defect in
fiber optic to source or detector optics is spherical aberration. Because the
fibers themselves are so much smaller than the coupling optics off-axis
aberrations are essentially absent.
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Merci de contacter Infos Photon Lines pour tout renseignement complémentaire. |
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