Sharp Kabushiki Kaisha Corporation

Nobumasa Ono

Mitsuo Kobachi

Kiyoshi Ebina

Takatoshi Mizoguchi

Shinya Kawanishi

Akihiro Fujita

Kiyoshi Kumata

Kazuhito Nagura

Mitsuru Hosoki

Seiichiro Kihara

Zenpei Tani

Hajime Kashida

Atsushi Murayama

Teruhiko Horinouchi

Masahiro Morita

Yukihisa Oda

Hirohumi Sindo

A light receiving and emitting integrated device is provided that can be connected to an IC for an optical pickup of the discrete package type, regardless of use of the knife edge method for a focus servo signal. In the light receiving and emitting integrated device, a diffraction grating branches light emitted from a semiconductor laser into three, namely, first to third lights, a hologram element divided into four regions, namely, first to four regions divides the first to third lights reflected by an optical recording medium, and four light receiving segments provided in a light receiving element receive and detect the first light. A focus servo signal can be obtained by the knife edge method using detection outputs of the first light received and detected by the four light receiving segments.

Light receiving and emitting integrated device, optical pickup provided therewith, and optical disk apparatus

The input device which includes a reflection type optical sensor having light emitting means and light receiving means; an operation section disposed facing the optical sensor, the operation section being tilted when a load is applied thereto; and output means for detecting a tilt status of the operation section based on signals from the light receiving means and outputting detected results to a computer body as positional information.

Input device for a computer and the like and input processing method

A photo interrupter includes a lead frame having a light-emitting element and a light-receiving element provided thereon and having a lead pattern for connecting input/output terminals of both the light-emitting element and said light-receiving element to the outside at a converged connector-jointing portion. Both the light-emitting element and the light-receiving element are provided on the common lead frame which is connected directly to a connector for connecting to the outside. A casing for holding the light-sensing parts is composed of a thermoplastic resin and provided with melt pins joining the connector and the lead frame to the casing.

Photo interrupter and a method of manufacturing the same

An optoelectronic device for sensing an object without any contact, the optoelectronic device being adapted to be connected to a control device which is capable of sending an identification code to the optoelectronic device, the optoelectronic device includes an optoelectronic element (110, 111) for receiving an input signal and for converting the received signal into an electrical signal, an address memory (121) for storing a self identification code, a determining unit (126) connected to the address memory (121) for determining a coincidence between the self identification code stored in the address memory (121) and the identification code sent from the control device, and an activating unit (127) connected to the determining unit (126) for driving the optoelectronic element (110, 111) at a time when the self identification code coincides with the identification code.

Optoelectronic device, information apparatus and data transmission

Growing community of inventors

Hashimoto, Japan

Nobumasa Ono