Pioneer Corporation

Takehiro Matsuda

Shogo Miyanabe

Toshio Maehara

A control device () includes a control unit (). The control unit () controls a plurality of irradiation devices () that emit electromagnetic waves. The control unit () outputs a plurality of first periodic signals for respectively controlling movements of the irradiation directions of the electromagnetic waves to a first direction in the plurality of irradiation devices (), and a plurality of second periodic signals for respectively controlling movements of the irradiation directions of the electromagnetic waves to a second direction in the plurality of irradiation devices. The periods of the plurality of first periodic signals are the same as each other. The effective repetition number of the movement of the irradiation direction to the second direction, while the irradiation direction is moved one period to the first direction, is the same for the plurality of irradiation devices.

Control device, irradiation device, control method, and computer program

A measurement device () includes a measurement unit () which performs measurement by emitting electromagnetic waves and scanning an object with the electromagnetic waves, and a control unit () which controls the measurement unit (). The measurement unit () is operable in a first scan mode in which the object is scanned in a first direction, or a second scan mode in which the object is scanned in a second direction different from the first direction. The control unit () determines a scan mode to be executed by the measurement unit ().

Measurement device, measurement method, and non-transitory storage medium

At the time of insert molding of suspension bases (), areas of junction parts of the suspension bases () and flat plates () which are directly affected by fluidized synthetic resin when the synthetic resin is injected are varied independently so as to correct strain of suspensions ().

Method for molding synthetic resin structure

An optical pickup is provided which can read information from a plurality of recording mediums having different wavelengths without the need for a mixing prism. The optical pickup is comprised of a light emission part, a grating, a hologram and a light receiving part. The light emission part emits first and second laser beams having different wavelengths from each other. The grating generates a pair of sub-beams from the laser beam emitted from the light emission part. The hologram generates first and second high-order beams from the laser beam reflected by a recording medium to guide the high-order beams to the light receiving part. The light receiving part receives the first and second high-order beams generates a focus error signal and a tracking error signal which enables the information to be correctly read from the different recording mediums.

Optical pickup apparatus employing a grating and a hologram that generate multiple beams detected by a photodetector

There is an optical pickup apparatus using a semiconductor laser element having a first light emission part and a second light emission part wherein it is constructed so that in case that the first light emission part is placed in a position in which an image height does not occur and the second light emission part is placed in a position in which an image height occurs, when the first light emission part is driven, the same focus driving currents are supplied from a focus driving part and when the second light emission part is driven, an objective lens is driven in a focus direction with the objective lens inclined by generating an offset value having a predetermined value from an offset generation part and varying one of the focus driving currents of the focus driving part

Growing community of inventors

Saitama, Japan

Takehiro Matsuda