Abstract:
An acceleration sensor includes a base substrate provided with a first recess part, and a sensor part located on the first recess part and swingably supported in a depth direction of the first recess part by a support part, wherein the sensor part is sectioned into a first part and a second part by the support part, includes a movable electrode part in the first part and the second part, a through hole is provided at least at an end side in the second part larger in mass than the first part, and the base substrate includes a fixed electrode part in a position opposed to the movable electrode part in the first recessed part, and a second recess part deeper than the first recess part is provided in a position opposed to the end side of the sensor part.
Abstract:
A functional device according to an embodiment of the invention includes: an insulating substrate; a movable section; movable electrode fingers provided in the movable section; and fixed electrode fingers provided on the insulating substrate and arranged to be opposed to the movable electrode fingers. The fixed electrode fingers include: first fixed electrode fingers arranged on one side of the movable electrode fingers; and second fixed electrode fingers arranged on the other side of the movable electrode fingers. The first fixed electrode fingers and the second fixed electrode fingers are arranged to be spaced apart from each other.
Abstract:
The actuator has a movable mass portion and a pair of drive mechanisms for driving the movable mass portion. Each of the pair of drive mechanisms includes a drive mass portion, a support portion for supporting the drive mass portion, a first elastic connecting portion interconnecting the drive mass portion and the support portion so as to allow the drive mass portion to be pivoted about a pivotal axis with respect to the support portion, and a second elastic connecting portion interconnecting the drive mass portion and the movable mass portion so as to allow the movable mass portion to be pivoted about a pivotal axis with respect to the drive mass portion. The first elastic connecting portion includes a pair of bending bars opposed to each other with interposing the pivotal axis of the drive mass portion therebetween. The first elastic connecting portion includes a pair of piezoelectric elements jointed respectively onto the pair of bending bars so as to bend the pair of bending bars in opposite directions to cause pivotal movement to the drive mass portion. The pivotal movement of the drive mass portion causes torsional deformation to the second elastic connecting portion so as to pivot the movable mass portion.
Abstract:
An actuator that can be driven at a reduced voltage and manufactured with ease, and a method for manufacturing the same are provided. The actuator includes second supporting portions 31 and 32 secured to a supporting substrate 4 through a spacer, fixed portions 33 and 34 secured to the supporting substrate 4 with no intervention of the spacer, fixed comb electrodes 331 and 341 integrally formed the fixed portions 33 and 34 and meshing with movable comb electrodes 211 and 212 in a spaced-apart relationship, and bridge portions 35 and 36 for connecting the fixed portions 33 and 34 to the second supporting portions 31 and 32. The fixed portions 33 and 34 are affixed to the supporting substrate 4 in a condition that they are deflected toward the supporting substrate 4 with respect to the second supporting portions 31 and 32 while bending the bridge portions 35 and 36, thereby initially deflecting the fixed comb electrodes 331 and 341 so as to be out of alignment with the movable comb electrodes 211 and 212 in a thickness direction of the supporting substrate 4.
Abstract:
An actuator that can be driven at a reduced voltage and manufactured with ease, and a method for manufacturing the same are provided. The actuator includes second supporting portions 31 and 32 secured to a supporting substrate 4 through a spacer, fixed portions 33 and 34 secured to the supporting substrate 4 with no intervention of the spacer, fixed comb electrodes 331 and 341 integrally formed the fixed portions 33 and 34 and meshing with movable comb electrodes 211 and 212 in a spaced-apart relationship, and bridge portions 35 and 36 for connecting the fixed portions 33 and 34 to the second supporting portions 31 and 32. The fixed portions 33 and 34 are affixed to the supporting substrate 4 in a condition that they are deflected toward the supporting substrate 4 with respect to the second supporting portions 31 and 32 while bending the bridge portions 35 and 36, thereby initially deflecting the fixed comb electrodes 331 and 341 so as to be out of alignment with the movable comb electrodes 211 and 212 in a thickness direction of the supporting substrate 4.
Abstract:
A wavelength-tunable optical filter includes a stationary mirror, a movable mirror disposed so as to face the stationary mirror, an actuating plate for actuating the movable mirror, and a peripheral supporting portion holding the actuating plate which are disposed above a base layer. The movable mirror is displaced by applying a voltage between the electrodes provided on the actuating plate and the base layer, and the actuating plate is disposed between the movable mirror and the peripheral supporting portion so as to be displaced due to an electrostatic force.
Abstract:
An actuator 100 of the type employing a two-degree-of-freedom vibration system includes: a pair of first mass portions 1, 11; a second mass portion 2 provided between the pair of first mass portions 1, 11; a pair of supporting portions 3, 3 for supporting the pair of first mass portions 1, 11 and the second mass portion 2; at least a pair of first elastic connecting portions 4, 4 which respectively connect the first mass portions 1, 11 to the supporting portions 3, 3 so that each of the first mass portions 1, 11 can rotate with respect to the supporting portions 3, 3; and at least a pair of second elastic connecting portions 5, 5 which respectively connect the second mass portion 2 to the first mass portions 1, 11 so that the second mass portion 2 can rotate with respect to the first mass portion 1, 11. Each of the first mass portions 1, 11 is driven by the application of an alternating voltage, causing the second mass portion 2 to rotate.
Abstract:
An actuator that can be driven at a reduced voltage and manufactured with ease, and a method for manufacturing the same are provided. The actuator includes second supporting portions 31 and 32 secured to a supporting substrate 4 through a spacer, fixed portions 33 and 34 secured to the supporting substrate 4 with no intervention of the spacer, fixed comb electrodes 331 and 341 integrally formed the fixed portions 33 and 34 and meshing with movable comb electrodes 211 and 212 in a spaced-apart relationship, and bridge portions 35 and 36 for connecting the fixed portions 33 and 34 to the second supporting portions 31 and 32. The fixed portions 33 and 34 are affixed to the supporting substrate 4 in a condition that they are deflected toward the supporting substrate 4 with respect to the second supporting portions 31 and 32 while bending the bridge portions 35 and 36, thereby initially deflecting the fixed comb electrodes 331 and 341 so as to be out of alignment with the movable comb electrodes 211 and 212 in a thickness direction of the supporting substrate 4.
Abstract:
An optical deflector includes a mirror configured to reflect light; a pair of support portions each having an end connected to the mirror, and configured to support the mirror; first actuators connected to the respective support portions, and configured to deform the support portions so as to cause the mirror to oscillate about a first axis; a movable frame configured to support the first actuators; and second actuators connected to the movable frame and disposed opposite to the first actuators, with the support portions being interposed between the first actuators and the second actuators. The second actuators are not connected to the support portions. The first actuators and the second actuators bend and deform in the same direction.
Abstract:
A functional element including a substrate having a principal surface, a groove portion (a first groove portion, a second groove portion) disposed on the principal surface, and a fixed electrode section (a first fixed electrode finger, a second fixed electrode finger) laid across the groove portion on the substrate, wherein, in the groove portion, a raised portion formed by using at least one of the substrate and the fixed electrode section is provided in a position overlapping with the fixed electrode section in a plan view, the raised portion has a bonded surface (an end face), a wiring line (a first wiring line, a second wiring line) is disposed on the bonded surface, and the substrate and the fixed electrode section are connected with the wiring line sandwiched between the substrate and the fixed electrode section.