Light irradiation device and light measurement device
AssigneeHamamatsu Photonics K.K.
InventorsTakuji Kataoka, Taira Ito
Life of this patent
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Abstract
The present invention relates to a light irradiation apparatus and the like which can reduce background light noise from a plurality of wells provided on a microplate. The light irradiation apparatus comprises a microplate, a light guiding member, and a light source apparatus. The light guiding member includes a plurality of light emitting units provided on a main surface in correspondence with the plurality of wells. Each light emitting unit includes depressions each having an opening on the main surface. Measurement light from the light source apparatus is inputted from a side surface, refracted and reflected at the side surface of each depression, and then outputted from the opening of each depression.
Claims32
A light measurement apparatus, comprising:
- a light irradiation apparatus for irradiating a microplate having a main surface on which plural wells each accommodating, an object to be measured are two-dimensionally arranged and a back surface opposing the main surface, with measurement light from the back surface side of the microplate;
- and
- a detector detecting light emitted from the object to be measured in response to the irradiation of the measurement light,
- wherein the light irradiation apparatus comprises:
- a light guiding member having a main surface, a back surface opposing the main surface, a side surface which intersects at least the hack surface, and plural depressions in the main surface that act as light-emitting portions irradiating the object to be measured with the measurement light;
- and
- a light source outputting the measurement light to be introduced within the light guiding member through the side surface thereof,
- wherein the plural light-emitting portions are located between the main surface and the back surface of the light guiding member, and
- wherein the detector is arranged so that the back surface of the light guiding member is located between the detector and the plural light-emitting portions.
A light irradiation apparatus for irradiating an object to be measured with measurement light, the apparatus comprising:
- a light guiding member having a main surface, a back surface opposing the main surface, a side surface which intersects at least the back surface, and plural depressions in the main surface that act as light-emitting portions irradiating the object to be measured with measurement light;
- and
- a light source outputting the measurement light to be introduced within the light guiding member through the side surface thereof,
- wherein the plural light-emitting portions are located between the main surface and the back surface of the light guiding member, and
- wherein the light guiding member has a structure such that the measurement light from the light source travels within at least a space between the plurality of light-emitting portions and the back surface of the light guiding member.
A light measurement apparatus for measuring light from a microplate provided with plural wells each accommodating an object to be measured, the light measurement apparatus comprising:
- a light guiding member having a main surface, a back surface opposing the main surface, a side surface which intersects at least the back surface, and a depression that acts as a light-emitting portion irradiating the microplate with measurement light;
- a light source outputting the measurement light to be introduced within the light guiding member through the side surface thereof;
- and
- a detector detecting the light from the microplate through the back surface of the light guiding member,
- wherein the light-emitting portion is located between the main surface and the back surface of the light guiding member, and the detector is arranged so that the back surface of the light guiding member is located between the detector and the light-emitting portion.
Dependencies are inferred from the claim text.