The Furukawa Electric Co., Ltd.

Shinichi Taguchi

Ken Tsukii

Jie Xu

Toru Takahashi

Kenichi Kimura

Motosuke Kiyohara

A photodetector detects fluorescence emitted from a sample placed on a substrate of a DNA chip. There is an irradiation optical system for guiding irradiation light by a first optical waveguide, gathering the irradiation light by a first lens and irradiating the sample. A reception optical system gathers fluorescence at an input-side end surface of a second optical waveguide by a second lens and guides the fluorescence to a measuring unit. The irradiation optical system and the reception optical system are separate light guiding paths. The reception optical system is of a confocal optical system in which a focal point on the sample is identical to a focal point at the input-side end surface of the second optical waveguide of the reception optical system.

Photodetector and measurement object reader

The light measurement apparatus of the invention, in which the light is irradiated to the sample dispersed in the liquid flowing through the flow passage, is used for measuring optical information of the sample. The apparatus includes a light source portionfor irradiating the irradiating light L to the liquid, a light receiving portionto receive the optical information of the sample S including the irradiating light transmitted through the liquid to generate a receiving light signal SG, under a condition in which the liquid is irradiated by the irradiating light of the light source portionin a state that a relative position of the sample S to the irradiating light varies at constant speed, a measurement portionfor measuring variation of the receiving light signal according to the sample.

Growing community of inventors

Tokyo, Japan

Shinichi Taguchi