Sharp Kabushiki Kaisha Corporation

Sharp Semiconductor Innovation Corporation

Sony Corporation

Yoshifumi Masuda

Noboru Takeuchi

Mitsutoshi Okami

Hirokazu Sasabe

Toshiya Fujiyama

Daiki Naruse

Akifumi Yamaguchi

Yoshinobu Kure

Kazuhito Nagura

Kazuyoshi Horie

Kuninori Shino

Toshihide Miyake

Zempei Tani

Youichi Toriumi

Yoshihiro Ohtsuka

A detection device according to an aspect of the invention, includes: a housing including an air intake port and an air discharge port; a platelike member having a first air ventilation port and a second air ventilation port, the platelike member being provided inside the housing; a first sensor provided on an air intake port side of the first air ventilation port on a front face of the platelike member; and a second sensor provided between the first air ventilation port and the second air ventilation port on a rear face of the platelike member.

Detection device and electronic apparatus

A detection mechanism includes a light source disposed on a substrate, a condensing lens disposed between the substrate and light emitted from the light source, and a photodetector disposed on the substrate and under the condensing lens.

Particle detection sensor and particle detector

[Object] To provide a particle detection sensor that is compact-and-flat designed and manufacturable at low cost. [Solution] A particle detection sensor () includes light transmissive resin () that encapsulates a light emitting element () and a light receiving element (), and a reflective surface () that is arranged on the light transmissive resin () and reflects output light () radiated from the light emitting element () toward an incident light field area ().

Particle detection sensor and particle detection apparatus

An optical communication apparatus in which bidirectional communication may be made over a sole optical fiber. A light emitting device () radiates light through an optical system () to an optical fiber (). The light transmitted from the optical fiber () is received over optical system () by a light receiving device (). In the optical system (), such a relationship S&#x2212;2QN&#x2267;M&#x3e;S/2Q&#x2212;N is set, where M is the light volume of the stray light emitted, Q is the value of a Q-value representing the communication quality as required, S is the light volume of a received signal from a communication partner and N is the sum total of the Gaussian noise.

Optical communication method and apparatus

A light receiving section of a photocoupler according to the present invention has, for example, a light receiving element, a converting circuit, an oscillator, an updown (U/D) counter, a decoder and a clock signal supply control circuit, and those devices are monolithically integrated therein. When the light receiving element receives light from a light generating section, an output of the converting circuit becomes High. At this time, an output of the decoder is delayed until the U/D counter has counted up to the preset number a clock signal supplied by the clock signal supply control circuit. On the other hand, upon having Low of the output of the converting circuit, the output of the decoder is delayed until the U/D counter has counted down to '0' the clock signal supplied by the clock signal supply control circuit. Therefore, even in the case where noise interferes the output of the converting circuit, since the output of the decoder is delayed until the count value of the U/D counter has reached the preset number or '0' in spite of switching of the operation of the U/D counter, it is not adversely affected by the noise. This results in improved anti-noise characteristics of the photocoupler.

Photocoupler with improved anti-noise characteristics

In a semiconductor color sensor circuit with two photodiodes having mutually different wavelength sensitivity characteristics, the ratio of numbers or areas of two types of transistors for logarithmic compression of signals from these photodiodes is adjusted so that errors in output voltage due to changes in temperature can be reduced and the dynamic range of illuminance of incident light can be enlarged.

Semiconductor color sensor detection circuit

Growing community of inventors

Nara, Japan

Yoshifumi Masuda