Omron Corporation

Kenji Homma

Hironobu Kiyomoto

Hayami Hosokawa

Naru Yasuda

Akira Matsui

Yukari Terakawa

Takahiro Ayabe

Naoki Nishimori

Kosuke Sugiyama

Jun Ota

Sayuki Nakada

Masayuki Koizumi

Minami Wazumi

Rie Masuda

Hideyuki Murai

Chunmei Huang

A proximity sensor is provided with coils () disposed in a pre-set positional relationship, a first distance calculation unit () and a second distance calculation unit () for calculating first distance information (d) and second distance information (d), respectively, from the coils () to a detection object (W) on the basis of reception results (voltages V, V) of the coils (), and a position estimating unit () for estimating the position, such as distance and azimuth, of the detection object (W) on the basis of the first distance information (d), the second distance information (d), and the positional relationship of the coils ().

Proximity sensor

An illumination device has a board, a plurality of light emitting elements that are mounted on the board, the plurality of light emitting elements being disposed such that a light irradiation direction of each light emitting element becomes substantially perpendicular to the board, and a plurality of lenses. Each of the plurality of lens is paired with one of the plurality of light emitting elements. A relative positional relationship between the light emitting element and the lens in each pair varies according to a position on the board in which the corresponding light emitting element is disposed.

Illumination device and producing method thereof

On the rear surface of a transparent molded unit is provided a reflecting member. In a central part of the molded unit are encapsulated light emitting devices. In the vicinity of the central part of the reflecting member is formed a reflecting area that is angularly inclined to the rear surface as it moves to the outer circumferential direction. A toric channel is provided on a light irradiation surface of the molded unit, and a slope total reflection area is provided in its inner circumferential side. Light emanating from the light emitting devices is reflected at the slope total reflection area, and further reflected at the direct output area. Then, after being further reflected at the reflecting area of the reflecting member, the light is guided to the outer circumferential end of the reflecting member, and is outputted forward from the total reflection area by being reflected at the outer circumferential end of the reflecting member.

Light emitting source and a light emitting source array

On a front wall of a mold resin () sealing a light emitter (), a direct emission region (), through which the light emitted from the light emitter () directly passes to the outside, and a total reflection region (), by which the light emitted from the light emitter () is totally reflected, are formed. The direct emission region () is formed into a shape of a convex lens. A light reflection portion () which is made of a concave mirror is provided on the rear face of the mold resin (). When a part of the light emitted from the light emitter () passes through the direct emission region (), it is affected by the lens to be emitted to the front direction. After another part of the light emitted from the light emitter () is totally reflected by the total reflection region (), it is reflected by the light reflection portion () to be emitted to the front direction through the total reflection region ().

Optical device and apparatus comprising the optical device

This invention improves the use efficiency of light emitted by a solid light emitter such as a light emitting diode, and realizes a desired directional pattern. On a front boundary surface of a mold resinsealing a light emitter, there are formed a direct emission regionfor emitting the light from the light emitterand a total reflection regionfor totally reflecting the light from the light emitter. The direct emission regionis convex lens-shaped. A light reflecting portionhaving a concave mirror shape is disposed on a rear wall of the mold resin. A part of light emitted from the light emitteris emitted forward by receiving an optical lens action when it passes through the direct emission region. Another part of the light emitted by from the light emitteris totally reflected by the total reflection region, and is reflected by the light reflecting portion, and emitted forward from the total reflection region

Transparent optical component for light emitting/receiving elements

A mold part formed of a light transmitting material having a high refractive index is molded in a concave-shaped reflecting member, and a light emitting element such as an LED chip or the like is inserted in the center of the mold part. A circular direct emitting portion is provided at the center of a front face of the mold part, a ring-shaped total reflecting portion is provided around it, and a slanted total reflecting portion is provided between the direct emitting portion and total reflecting portion. Thereby, the uniformity of front face luminance with a simple structure in a light emitting device provided with a reflecting member on a back face of a mold part is improved.

Growing community of inventors

Kyoto, Japan

Kenji Homma