Flexible Optical B.V. (OKO Technologies)

21. How to bias the MMDM?
(FAQs/MMDMs)

In the simplest case biasing can be achieved by applying a constant voltage to all actuators of the MMDM. Theoretically under the constant bias the MMDM should take a parabolic shape. In practice, MMDM ...

22. What is "biased operation"?
(FAQs/MMDMs)

... shapes with a reference to a flat surface. To achieve bi-directional operation the membrane should be initially deflected towards the actuators and made perfectly spherical by adjusting the actuator voltages. ...

23. Piezoelectric DM
(Products/Wavefront correctors)

OKO Technologies produces low-cost piezoelectric deformable mirrors (PDM) with clear aperture of 30 mm and 50 mm. The full surface stroke is 6 μm standard with maximum stroke between the adjacent actuators ...

24. Publications based on OKO products
(Products/Technology)

... authors show that to achieve a high quality correction of low-order aberrations using membrane, bimorph and continuous facesheet mirrors, these mirrors should have sufficient number of actuators positioned ...

25. New PDM with 79 channels
(News/2007)

OKO Technologies announces new 50mm PDM with 79 actuators. The mirror has 79 PZT actuators, with 61 actuators forming a hexagonal grid with 4.7 mm pitch, and 18 actuators placed on a circumference ...

26. PDM with 109 actuators
(News/2006)

OKO Tech introduces 50-mm 109-ch  piezoelectric deformable mirror.

27. Linear PDM for femtosecond pulse shaping
(News/2006)

OKO introduces  20-ch linear piezoelectric deformable mirror for femtosecond pulse shaping.  The mirror has 10x50mm active area, controlled by two rows of 10 actuators each. Actuator pitch ...

28. Piezoelectric DM with 19 actuators
(News/2004)

OKO introduces low-cost 19-channel piezoelectric deformable mirror. Please check out live interferometric images of the device.