MIRROR CONTROL DEVICE
First Claim
1. A mirror control device characterized by comprising:
- a mirror which is pivotally supported;
a plurality of electrodes which are spaced apart from said mirror;
driving voltage generation means for generating a driving voltage corresponding to a desired tilt angle of said mirror for each electrode;
bias voltage generation means for generating, as a bias voltage for each electrode, a voltage which causes the tilt angle of said mirror to have a predetermined value upon being independently applied to each electrode; and
electrode voltage applying means for adding, for each electrode, the bias voltage to the driving voltage and applying the voltage after addition to a corresponding one of said electrodes.
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Accused Products
Abstract
A mirror control device includes a pivotally supported mirror (230), electrodes (340a-340d) spaced apart from the mirror (230), a driving voltage generation means (401) for generating a driving voltage corresponding to the desired tilt angle of the mirror (230) for each electrode, a bias voltage generation means (402) for generating, as a bias voltage for each electrode, a voltage which causes the tilt angle of the mirror (230) to have the same predetermined value upon being independently applied to each of the electrodes (340a-340d), and an electrode voltage applying means (403) for adding, for each electrode, the bias voltage to the driving voltage and applying the voltage after addition to a corresponding one of the electrodes (340a-340d).
35 Citations
27 Claims
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1. A mirror control device characterized by comprising:
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a mirror which is pivotally supported; a plurality of electrodes which are spaced apart from said mirror; driving voltage generation means for generating a driving voltage corresponding to a desired tilt angle of said mirror for each electrode; bias voltage generation means for generating, as a bias voltage for each electrode, a voltage which causes the tilt angle of said mirror to have a predetermined value upon being independently applied to each electrode; and electrode voltage applying means for adding, for each electrode, the bias voltage to the driving voltage and applying the voltage after addition to a corresponding one of said electrodes. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A mirror control device characterized by comprising:
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a mirror which is pivotally supported; a plurality of electrodes which are spaced apart from said mirror; and driving voltage applying means for generating an AC voltage as a driving voltage in accordance with a desired tilt angle of said mirror and applying the driving voltage to each electrode so as to generate at least a first section where a potential difference between said mirror and said electrode to which the driving voltage is applied is positive and a second section where the potential difference between said mirror and said electrode to which the driving voltage is applied is negative. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A mirror control device characterized by comprising:
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a mirror which is pivotally supported; a plurality of electrodes which are spaced apart from said mirror; bias voltage applying means for applying a nonzero bias voltage to said mirror; and driving voltage applying means for applying a driving voltage of a polarity opposite to the bias voltage to at least one of said plurality of electrodes. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification