Ricoh Company, Ltd.

Wataru Yokota

Goichi Akanuma

Mizuki Shinkawa

An acoustic transducer includes: a vibration portion including: a diaphragm; and a vibrator on the diaphragm; a frame surrounding the vibration portion; and a connecting portion connecting the vibration portion and the frame. The vibrator is configured to drive the diaphragm.

Acoustic transducer, acoustic apparatus, and ultrasonic oscillator

A movable device includes a movable part including a mirror unit; a torsion bar with one end coupled to the movable part; a first cantilever part coupled to the other end of the torsion bar; a second cantilever part with one end coupled to a coupling portion of the first cantilever part; a stationary part coupled to the other end of the second cantilever part; and a driver configured to deform the second cantilever part. A width of the coupling portion of the first cantilever part, to which the second cantilever part is coupled, is narrower than a width of the second cantilever part in a width direction of the coupling portion.

Movable device, image projection apparatus, head-up display, laser headlamp, head-mounted display, object recognition device, and vehicle

An acoustic transducer includes a diaphragm and multiple vibrators to drive the diaphragm. The diaphragm has multiple cutouts and includes multiple arrangement portions. The multiple vibrators are disposed on the multiple arrangement portions, respectively. At least one of the multiple arrangement portions is disposed between two of the multiple cutouts adjacent to each other and supported at both ends thereof.

Acoustic transducer

A light deflector includes a stationary part; a movable unit having a reflecting surface; a connecting part between the movable unit and the stationary part; a drive unit disposed on a first surface of the connecting part, the drive unit configured to deform the connecting part to oscillate the movable unit; and a rib disposed on a second surface of the connecting part, the second surface being an opposite surface of the first surface. The rib includes a portion whose longitudinal direction is orthogonal to a direction at which the connecting part is bent.

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Kanagawa, Japan

Wataru Yokota