Denso Wave Corporation

Manabu Miyazaki

Koji Konosu

Kunihiko Ito

Hiroshi Ota

Masami Tanaka

Takao Ushijima

Takuya Yoda

Atsushi Tano

Soutaro Tabata

Kentaro Maruyama

Ryota Banno

Akira Kida

Takahiro Tanaka

A portable information code reading apparatus includes an image unit imaging an information code, a processing unit encoding the information code imaged by the imaging unit, a case that holds the imaging unit and the processing unit. An attaching member is produced integrally with the case or produced as a separate member from the case. The attaching member is used to hook the case on a user's ear.

Portable information code reader

Disclosed herein are an information code and an information code reader. In information code, a plurality of light-colored modules exhibiting the reflective characteristics of light color when light of a second wavelength band different from light of a first wavelength band is radiated and a plurality of dark-colored modules exhibiting the reflective characteristics of dark color when the light of a second wavelength band is radiated are arranged in a code region. The information code includes a masked portion disposed in a predetermined region of the code region in which light is intercepted and prevents the corresponding information code from being read, and configured to, when the light of a second wavelength band is radiated, allow light reflected from the modules of the corresponding code region to pass therethrough and thereby interrupt the light of a first wavelength band.

Information code and information code reader

In an apparatus for optically reading a graphic symbol composed of a plurality of optically identifiable unit sections of information, a first image pickup unit has a first photodetector and picks up a first optical image of the graphic symbol based on light detected by the first photodetector. A second image pickup unit has a second photodetector and configured to pick up a second optical image of the graphic symbol based on light detected by the second photodetector. A correcting unit corrects a light intensity level of at least one section of one of the first and second optical images based on a light intensity level of at least one section of the other of the first and second optical images. The at least one section corresponds to at least one of the unit sections of information of the graphic symbol.

Apparatus for optically reading information stored in graphic symbol

An information reader has blocks of bright field illuminating units illuminating an information code directly marked on an object with first lights to regularly reflect the lights on the code, blocks of dark field illuminating units illuminating the code with second lights to irregularly reflect the lights on the code, an optical system, and a control section lighting the blocks of bright and dark field illuminating units by turns or simultaneously. The optical system forms an image of the code from each of the first and second lights or a combination of the first and second lights reflected on the code and reads the code from the images. The first lights are transmitted along an optical axis of the optical system. The second lights are transmitted toward the optical axis while slightly shifted toward the code.

Information reader for optically reading code on object

Growing community of inventors

Nagoya, Japan

Manabu Miyazaki