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Total 17 results found.

... By locating 18  of 19 mirror's actuators outside the 20-mm aperture, we have created the mirror able to correct for first 15 Zernike polynomials with very high quality and practiaclly withouth any actuator ...
Friday, 25 July 2008
2. MrFit
(Products/Software)
... actuators to achieve the best possible compensation for a specified wavefront aberration, defined as a combination of Zernike terms. The program shows the surfaces of the wavefront, the best fit with ...
Friday, 04 April 2008
3. A4MEMS high-voltage amplifier modules
(Products/Electronics)
... frequency range of up to 1 kHz, with full 300 V amplitude. A4MEMS is usable for driving a wide variety of electrostatic and piezoelectric actuators. A4MEMS features a complete short circuit protection ...
Thursday, 27 March 2008
4. MrFit is out
(News/Latest news)
... for simulation of membrane and continuous facesheet deformable mirrors ("Mr" means mirror and "Fit" means to fit a specied wavefront). It calculates the voltages to be applied to the actuators to achieve ...
Wednesday, 20 February 2008
5. New 50mm PDM with 37 channels
(News/Latest news)
OKO Technologies announces new 50mm PDM with 37 actuators. The mirror has 37 PZT actuators forming a hexagonal grid with 6.9 mm pitch. Free actuator stroke is approximately 7 µm, the stroke difference ...
Tuesday, 22 January 2008
... with RMS deviation from the nearest sphere better than 500 nm. The initial surface may have some irregularity due to random hysteresis state of different actuators. These irregularities are always formed ...
Monday, 10 December 2007
... range is higher for low spatial frequencies. The maximum profile difference between the adjacent actuators reaches 800 nm for MMDM and can be as large as 3 ?m for a PDM.  ...
Monday, 10 December 2007
8. Linear deformable mirrors
(Products/Wavefront correctors)
... PDM for pulse compression The linear piezoelectric deformable mirror for femtosecond pulse shaping has 10x50mm active area, controlled by two rows of 10 actuators each. The actuator pitch is 5 mm. The ...
Monday, 10 December 2007
9. How MMDM works?
(FAQs/MMDMs)
... silicon frame and suspended over a number of planar electrodes - electrostatic actuators. When the membrane is electrically grounded and a voltage is applied to one or a number of the actuators, the membrane ...
Monday, 10 December 2007
10. 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 ...
Monday, 10 December 2007
... 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. ...
Monday, 10 December 2007
12. 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 ...
Friday, 07 December 2007
13. Publications based on OKO products
(Products/Technology)
... mirrors, these mirrors should have sufficient number of actuators positioned outside the correction aperture. Optics Express 16, 2859-2866 (2008) Author(s): G. Vdovin, O. Soloviev, A. Samokhin, M. Loktev ...
Friday, 07 December 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 ...
Wednesday, 21 November 2007
15. PDM with 109 actuators
(News/2006)
OKO Tech introduces 50-mm 109-ch  piezoelectric deformable mirror.
Thursday, 05 October 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 ...
Wednesday, 04 January 2006
OKO introduces low-cost 19-channel piezoelectric deformable mirror. Please check out live interferometric images of the device.
Sunday, 30 May 2004
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