| US 7,579,746 B2 | ||
| Actuator with Alternating Steady Voltage Combs and Variable Voltage Combs | ||
| Tomoaki Nakamura, Suwa (Japan); and Makoto Inoguchi, Nishitokyo (Japan) | ||
| Assigned to Seiko Epson Corporation, (Japan) | ||
| Filed on Feb. 07, 2006, as Appl. No. 11/348,788. | ||
| Claims priority of application No. 2005-083865 (JP), filed on Mar. 23, 2005; application No. 2005-098069 (JP), filed on Mar. 30, 2005; and application No. 2005-303002 (JP), filed on Oct. 18, 2005. | ||
| Prior Publication US 2006/0227553 A1, Oct. 12, 2006 | ||
| Int. Cl. H02N 1/00 (2006.01); G02B 26/08 (2006.01) | ||
| U.S. Cl. 310—309 [359/224; 359/225; 359/291] | 12 Claims |
| 1. An actuator, comprising:
a base section;
an object having a body portion and a holding portion holding the body portion in a manner that the body portion is movable
against the base section, the body portion and the holding portion being integrally formed with the base section;
a movable comb-tooth portion extending from the object side in a direction substantially perpendicular to a formation direction
of the holding portion; and
a fixed comb-tooth portion which extends from the base section in a direction substantially perpendicular to the formation
direction of the holding portion and which is arranged at a position at which the fixed comb-tooth portion is engaged with
but having a gap from the movable comb-tooth portion;
the fixed comb-tooth portion being composed of each of steady-voltage-receiving fixed comb teeth that steadily receive a drive
voltage and variable-voltage-receiving fixed comb teeth that receive a controlled voltage, the steady-voltage-receiving fixed
comb teeth alternating with the variable-voltage-receiving fixed comb teeth along a length of the base section such that each
variable-voltage-receiving fixed comb tooth is disposed between a pair of steady-voltage-receiving fixed comb teeth.
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