Iwasaki Electric Co., Ltd.

Kochi University

Mitsuyuki Hatanaka

Takashi Sato

Kazuo Yamamoto

Nozomu Kajiwara

Takaaki Komiya

Yukimasa Saito

Koji Uchida

Yasufumi Kawanabe

Takayuki Sato

Takashi Satou

An imaging system includes: a first lighting device for irradiating an imaging target object with visible light; a second lighting device for irradiating the imaging target object with near-infrared light; and an image sensor for photodetecting visible light caused by the visible light and coming from the imaging target object and fluorescence caused by the near-infrared light and coming from the imaging target object during a predetermined shutter open period every frame of a predetermined period. The image sensor outputs photodetection signals corresponding to photodetection amounts of the visible light and the fluorescence. The imaging system also includes a controller that generates a composite image of a visible image and a fluorescence image based on the photodetection signals, and has a lighting controller that turns on the second lighting device with optical power corresponding to the shutter open period in synchronism with the shutter open period.

Imaging system

In a light converging type light guide unit for guiding light emitted from a light source to a light-receiving member having a reflection face extending from a light emission point to at least a place in the neighborhood of a light reception point of the light-receiving member, the reflection face has first and second focal points at which the light emission and reception points are disposed, respectively, and comprises an elliptical reflection face at the side of the light reception point, and a curved surface reflection face that is provided at the side of the light emission point, reflects light of the light source therefrom to the elliptical reflection face and obtains light that travels to the light reception point and is incident to the light reception point at a predetermined incidence angle or less by reflection from the elliptical reflection face.

Light converging type light guide unit and light source device using the same

A laminate type light emitting diode device having excellent heat radiation performance and high output capability is provided. A plurality of reflection type light emitting diode unitseach of which includes a light emitting diodeand a dichroic mirrorin a hollow metal holder casehaving high thermal conductivity so as to face each other are joined to one another through joint membersformed of electrical insulating material, thereby constructing the laminate type light emitting diode device

Laminate type light-emitting diode device, and reflection type light-emitting diode unit

Projector device having assembly of reflection type light emitting diodes

Growing community of inventors

Gyoda, Japan

Mitsuyuki Hatanaka