Canon Kabushiki Kaisha

Fuji Xerox Co., Ltd.

Takeshi Yoshioka

Takeshi Uchida

Hitoshi Ikeda

Motofumi Fukui

Toshiya Yamada

Hirohito Shibata

Toshimitsu Matsuu

Tatsuro Uchida

Kenji Yamagata

Yoshinobu Sekiguchi

Manabu Ueda

Takako Suga

Kazuto Hayashi

The light emitting element according to the present disclosure comprises a first active layer that emits light having a first wavelength by injecting current, a second active layer that emits light having a second wavelength different from the first wavelength by absorbing the light having the first wavelength, and a first reflecting mirror in which a reflectance of light having the first wavelength is higher than a reflectance of light having the second wavelength, wherein the first reflecting mirror is disposed at a position closer to an emission end, from which the light emitted by the first active layer or the second active layer exits outside, than the first active layer and the second active layer.

Light emitting element and manufacturing method of light emitting element

A light source includes an upper electrode layer, a lower electrode layer, and an active layer interposed therebetween. At least one of the upper and lower electrode layers is divided into a plurality of electrodes separated from each other in an in-plane direction of the active layer. The separated electrodes independently inject current into a plurality of different regions in the active layer. The light source emits light by injecting current from the upper and lower electrode layers into the active layer, guide the light in the in-plane direction, and output the light. The plurality of different regions in the active layer include a first region not including a light exit end and a second region including the light exit end, and the second region is configured to emit light of at least first-order level. The active layer has an asymmetric multiple quantum well structure.

Light source and optical coherence tomography apparatus including the light source

The present invention provides a light emitting device which emit light having a high-order level without increasing a current injection density to an active layer. A light emitting device according to the present invention includes an upper electrode layer, a lower electrode layer, and an active layer provided between them. In this case, light is emitted by injection of electric current to the active layer through the upper electrode layer and the lower electrode layer, the active layer has a plurality of quantum-confined structures, and a first quantum-confined structure has a ground level having an energy level Eand a high-order level having an energy level E, and a second quantum-confined structure has an energy level Ewhich is higher than the E, and the Eand the Eare substantially matched.

Light emitting device, light source system including the light emitting device, and optical coherence tomography including the light source system

A light source includes a control unit that controls currents injected into at least one light emitting region and a light emission spectrum conversion region. The at least one light emitting region includes a first light emitting region and a second light emitting region different from the first light emitting region, light that is emitted from the first light emitting region and passes through the light emission spectrum conversion region is combined with the light that is emitted from the first or second light emitting region and does not pass through the light emission spectrum conversion region. The control unit controls the currents injected into the light emission spectrum conversion region and the first light emitting region so that the current density of the light emission spectrum conversion region is smaller than the current density of the first light emitting region.

Light source and optical coherence tomography apparatus using the same

A recommendatory information provision system has a management apparatus and a user terminal device. The management apparatus includes a browsed information acquisition unit for acquiring information of a browsed document, a recommended document retrieval unit for retrieving a recommended document relevant to the browsed document, a recommendation history management unit for storing and managing history information which concerns recommendations of the recommended document, a recommendation history retrieval unit for retrieving from the recommendation history management unit, the history information of the recommended document which has been retrieved by the recommended document retrieval unit, and a recommendatory information provision unit for providing, to the user terminal device, the information concerning the recommended document and the history information of the recommended document as have been retrieved. The user terminal device has a display process unit for displaying the information on a screen.

Recommendatory information provision system

A document retrieval apparatus for retrieving documents from a document database in which documents are registered, and displaying the retrieved documents, the document retrieval apparatus includes: a keyword input unit for accepting input of a retrieval keyword for retrieving the documents; a document retrieval unit for retrieving the documents from the document database on the basis of the retrieval keyword; a keyword weight calculation unit for calculating those weights of the retrieval keyword which feature contents of the retrieved documents, as keyword weights; and a display process unit for displaying the retrieved documents in a state where the retrieval keyword contained in the retrieved documents is presented in display aspects conforming to the keyword weights.

Document retrieval apparatus

A process in which participants in different situations define in plural epistemological spaces can be easily accommodated. An epistemological space synthesizing part synthesizes different epistemological spaces to generate a new epistemological space, thereby juxtaposing therein business processes defined in each of the epistemological spaces. An accommodated activity extraction part extracts a combinable activity from the activities of the combined business process. A common resource extraction part extracts a combinable resource (common resource) used or produced by the extracted activity. A pre- and post-activity extraction part extracts pre- and post-activities to be accommodated. A combined business process generation part generates a business process which automatically synthesizes combinable parts from the juxtaposed business processes. An accommodating activity extraction selection part uses information acquired by the accommodation information extraction part to present an accommodating method. A user selects a suitable accommodating activity.

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Kanagawa, Japan

Takeshi Yoshioka