Claims
- 1. A method of operating a 2D micro actuator comprising the steps of:
obtaining a 2D micro actuator; oscillating a central part of said micro actuator relative to a first frame, wherein said central part is a mirror; maintaining the oscillations in resonance; applying a potential difference between the central part and the first frame when the central part returns to its position of balance; and oscillating the first frame relative to a second frame.
- 2. The method of claim 1 wherein said 2D micro actuator is subject to an impulse of duration of t2 and said oscillations are maintained by:
applying the potential at the end of duration t2; and adding an electrostatic force such that torsion arms bring the central part back towards a zero position.
- 3. The method of claim 2 including the additional steps of
adjusting the amplitude of the oscillations;
wherein said amplitude is adjusted by synchronizing extinction of a recall force with the central part crossing the electrodes by applying a progressive delay between impulse and release of t2; regulating a sweeping amplitude;
wherein said sweeping amplitude is regulated by modifying duration t2; and synchronizing the passage of the mirror to zero with a resorting force.
- 4. The method of claim 3 wherein the ratio of a horizontal frequency to a vertical frequency is a rational number.
- 5. The method of claim 3 comprising the additional steps of adjusting the horizontal pitch and vertical pitch to obtain a constant horizontal and vertical pitch, wherein
said horizontal pitch is adjusted by immobilizing and truncating the side parts of a spot pattern; and said vertical pitch is adjusted by isolating the higher and lower lines of the variation in pitch, obtaining a varying standardized pitch, and retaining only the lines with the same slope.
- 6. The method of claim 5, comprising the additional steps of controlling the horizontal and vertical frequency, wherein
one of the two frequencies of resonance is modified.
- 7. The method of claim 6, wherein
a continuously variable electrode signal is used to exert an additional restoring moment to torsion bars of the micro actuator and a continuous potential is applied.
- 8. The method of claim 6 comprising the additional steps of dividing each reading electrode into two parts and using one for starting and synchronous maintenance of the oscillations and using the other to modify an Eigen frequency of the actuator.
- 9. The method of claim 1 further comprising the steps of tuning the amplitude of oscillation, wherein said tuning of the amplitude regulates and optimizes sweeping coverage of an image.
- 10. The method of claim 9 wherein tuning the amplitude provides a zoom effect.
- 11. The method of claim 1, wherein
oscillating the first frame relative to the second frame comprises the steps of:
oscillating the first frame relative to the second frame; maintaining the oscillations in resonance; and applying a potential difference between the first frame and the second frame when the first frame returns to its position of balance.
- 12. The method of claim 1, comprising the additional steps of:
adding an electrostatic force such that torsion arms bring the central part back towards a zero position; adjusting the amplitude of the oscillations; regulating a sweeping amplitude; adjusting the horizontal and vertical pitch; controlling the horizontal and vertical frequencies; and tuning the amplitude of oscillation.
- 13. The method of claim 12, wherein oscillating the first frame relative to the second frame comprises the steps of:
oscillating the first frame relative to the second frame; maintaining the oscillations in resonance; and applying a potential difference between the first frame and the second frame when the first frame returns to its position of balance.
- 14. The method of claim 13, wherein oscillating the first frame relative to the second frame comprises the additional steps of:
adding an electrostatic force such that torsion arms bring the first frame back towards a zero position; adjusting the amplitude of the oscillations; regulating a sweeping amplitude; adjusting the horizontal and vertical pitch; controlling the horizontal and vertical frequencies; and tuning the amplitude of oscillation.
- 15. A method of frame grabbing with a laser scanner comprising the steps of:
scanning an image with a laser scanner; defining a character sensing field extinguishing a light source being used for production of utilized sweeping; generating a precise rectangle of the character sensing field; digitizing the spot reflected by the image into binary words; arranging binary words in a memory representing the image, keeping a substantially constant pitch by retaining only lines of equal slopes, and truncating high and low parts of the image.
- 16. The method of claim 15 comprising the additional steps of zooming the image by increasing the amplitude of oscillation.
- 17. The method of claim 15, comprising the additional steps of:
analyzing the lines of equal slopes to decode symbologies; and capturing a video frame.
Parent Case Info
[0001] This application claims that benefit of U.S. Provisional Application No. 60/342,687 filed Dec. 26, 2002.
Provisional Applications (1)
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Number |
Date |
Country |
|
60342687 |
Dec 2001 |
US |