Optoelectronics Co., Ltd.

Opticon, Inc.

Yasutake Kawashima

Ken Fukuba

Satoshi Komi

Masayuki Hakata

You Tanaka

Keiichi Fujiyoshi

An imaging device comprises an imaging sensor and a pulsed LED for illuminating an imaging object of the imaging sensor, performs respective imagings according to respective imaging conditions each including an exposure time te of the imaging sensor and a lighting time tr of the pulsed LED, stores respective combinations of brightness index values Dof respective images obtained by the respective imagings and the imaging conditions of the respective images, obtains estimates of exposure contribution degree k_off indicating degree of influence of variation of the exposure time te on brightness index value and a lighting contribution degree k_on indicating degree of influence of variation of the lighting time tr on brightness index value, based on the stored combinations of the brightness index values Dand the imaging conditions, and determines an imaging condition to be used in the next imaging based on the estimates of k_on and k_off.

Imaging method, imaging device, method for distinguishing imaging object, and storage medium

Provided is a dimension measuring apparatus which measures dimensions of a measurement target object without the need of complicated operations by a user. According to dimension measuring apparatus (), laser () radiates laser beams to form at least two feature points on a measurement target object. Decoder () measures a distance from the measurement target object by using reflection light of at least two laser beams reflected on the measurement target object. Imaging sensor (A) captures an image of the measurement target object to which at least the two laser beams are radiated. Dimension measurement section () measures a length of the measurement target object on a line connecting the two feature points on the basis of the distance from the measurement target object, a position of the measurement target object in the image, and positions of the two feature points in the image.

Dimension measuring apparatus, information reading apparatus having measuring function, and dimension measuring method

In an optical information reading device configured to read a code symbol on a subject to be read by acquiring an image of the subject to be read with an image pickup portion and analyzing the image, a laser light source and an irradiation optical system is provided as an irradiator configured to irradiate the subject to be read to form a guide mark indicating an image pickup resolution of the image pickup portion. It is preferable that the irradiator is configured to emit a plurality of radially diffused light beams so as to form the guide mark at equal intervals on the subject to be read.

Optical information reading device

An image reading device includes an illumination system and a processor that causes the illumination system to produce illumination according to an illumination period having a continuous or substantially continuous, illumination sub-period and at least one pulsed, illumination sub-period. The illumination period allows the image reading device to determine a proper exposure for imaged indicia by sectioning a single frame into individual exposures.

Image reading device capable of producing illumination including a continuous, low-intensity level illumination component and one or more pulsed, high-intensity level illumination components

A liquid crystal lens optical body that is available to a rapid response, the liquid crystal lens optical body having a first liquid crystal lens in which a liquid crystal layer is held between first electrodes, the first liquid crystal lens changing optical power by controlling orientation condition of liquid crystal molecules based on an input signal to the electrodes, and a second liquid crystal lens in which a liquid crystal layer is held between second electrodes, the second liquid crystal lens changing optical power by controlling orientation condition of liquid crystal molecules based on the input signal to the electrodes, the first and second liquid crystal lenses provided on an optical axis. In each liquid crystal lens, a response characteristic when the optical power undergoes a transition from a large condition thereof to a small condition thereof is different from a response characteristic when the optical power undergoes a transition from a small condition thereof to a large condition thereof.

Information display device and display driving method

Optical information reader

An optical-information-reading apparatus includes an imaging optical system having a varifocal lens that adjusts a focal position, a solid-state image sensing device that images a code symbol, a ranging laser that measures a distance to the code symbol, and a decoder that calculates the distance to the code symbol using the ranging laser. The apparatus controls the varifocal lens based on calculated distance information.

Growing community of inventors

Saitama, Japan

Yasutake Kawashima