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adaptiveoptics.org provides news and information for the world-wide adaptive optics community. Contact: webmaster@adaptiveoptics.org. News
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Delft, The Netherlands – October 5, 2006:
Flexible Optical B.V. (a.k.a. OKO Technologies) announces the
introduction of a novel low-cost piezoelectric deformable mirror with 109 actuators.
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The mirror has a 53 mm clear aperture
with package dimensions of 100×100×60 mm.
The mirror weighs approximately 650 g.
It is driven by three The mirror figure is controlled by 109 piezoelectric actuators positioned in an orthogonal grid with a pitch of 4.3 mm. The free actuator stroke is approximately 7 µm, the stroke difference between neighbouring actuators reaches 1.5 µm. Higher inter-actuator stroke is available on special order. The initial mirror figure is slightly spherical with an ROC larger than 30 m. RMS deviation from the initial reference sphere does not exceed 0.5 µm. Actuator hysteresis is better than 10%. |
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The mirror can be actively flattened with respect to the initial sphere
with a RMS error of better than λ/20.
The 109-channel 50 mm piezoelectric OKO mirror is suitable for fast correction of large high-order aberrations in vision and ophthalmic systems, laser systems and medium-size telescopes. The mirror can be coated with metal, metal-dielectric and multilayer dielectric coatings for high reflectivity. The mirror surface is robust and can be cleaned using a standard “pull-off” procedure. |
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© 2006 |
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