Plano Concave Microlenses
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Microlenses for a variety of demanding miniaturization applications
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Diameters down to 0.06 inches, focal lengths to less than 2mm
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Plano convex, plano concave, biconvex and biconcave lens shapes available as standard
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Precision polished to λ/2 surface figures
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Ideal for coupling fibers and laser diodes to each other or to systems
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Mounting of microlenses in aluminum housings available
These very small lenses are made from high index optical glass. They are precision polished to very high tolerances so that they can be mounted into complex imaging systems. These lenses are supplied uncoated.
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| D (mm) | f (mm) | tc (mm) | te (mm) | fb (mm) | r (mm) | Centration (arcmin) | Surface Quality | Material | Coating | Focal Length tolerance | Surface Accuracy @633nm | Clear Aperture (%) | Diameter tolerance | Thickness tolerance | Bevel |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.0 | -4.0 | 0.80 | 0.95 | -4.43 | -3.40 | ±0.04mm | 20 - 10 | LaSFN9 | none | ±5% | λ/2 | ≥ 90 | +0, -0.1mm | ±0.2mm | 0.2mm x 45° typical |
| 2.0 | -4.0 | 0.80 | 0.95 | -4.43 | -3.40 | ±0.04mm | 20 - 10 | LaSFN9 | BMAR 425-675nm | ±5% | λ/2 | ≥ 90 | +0, -0.1mm | ±0.2mm | 0.2mm x 45° typical |
| 3.0 | -6.0 | 0.80 | 1.00 | -6.43 | -5.10 | ±0.04mm | 20 - 10 | LaSFN9 | none | ±5% | λ/2 | ≥ 90 | +0, -0.1mm | ±0.2mm | 0.2mm x 45° typical |
| 3.0 | -6.0 | 0.80 | 1.00 | -6.43 | -5.10 | ±0.04mm | 20 - 10 | LaSFN9 | BMAR 425-675nm | ±5% | λ/2 | ≥ 90 | +0, -0.1mm | ±0.2mm | 0.2mm x 45° typical |
| 4.0 | -8.0 | 0.80 | 1.00 | -8.43 | -6.80 | ±0.04mm | 20 - 10 | LaSFN9 | none | ±5% | λ/2 | ≥ 90 | +0, -0.1mm | ±0.2mm | 0.2mm x 45° typical |
| 4.0 | -8.0 | 0.80 | 1.00 | -8.43 | -6.80 | ±0.04mm | 20 - 10 | LaSFN9 | BMAR 425-675nm | ±5% | λ/2 | ≥ 90 | +0, -0.1mm | ±0.2mm | 0.2mm x 45° typical |