Light detection device
AssigneeHitachi High-Tech Corporation
InventorsRyo Imai, Takashi Anazawa
Life of this patent
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Abstract
A light detection device includes a flow channel array that is arranged with axes of a plurality of tubes in parallel to each other and constituting a flow channel plane. A light source emits light so that an oscillation direction of an electric field component of the light is parallel to the flow channel plane. An optical axis of the light is included in the flow channel plane, and the optical axis forms a predetermined angle θ0 with respect to a direction orthogonal to the axes of the plurality of tubes on the flow channel plane, and a light detection system detects light emission from the plurality of tubes.
Claims8
A light detection device comprising:
- a flow channel array in which a plurality of tubes is arranged with axes of the plurality of tubes being parallel to each other, the flow channel array constituting a flow channel plane;
- an irradiation optical system including a light source and configured to irradiate light emitted from the light source such that
- an oscillation direction of an electric field component of the light is parallel to the flow channel plane,
- an optical axis of the light is included in the flow channel plane, and
- the optical axis forms a predetermined angle θ0 with respect to a direction orthogonal to the axes of the plurality of tubes on the flow channel plane;
- and
- a light detection system configured to detect light emission from the plurality of tubes,
- wherein the predetermined angle θ0 satisfies following Formulas 1 and 2 in Mathematical formula 2 with respect to an angle θ1 of a light beam in a material of the plurality of tubes and an angle θ2 of a light beam inside the plurality of tubes determined as Mathematical formula 1 based on a refractive index n0 of a surrounding environment, a refractive index n1 of the material of the plurality of tubes, a refractive index n2 of the material inside the plurality of tubes, and the predetermined angle,
- [
- Mathematical
-
- formula
-
- 1
- ]
-
- n
- 0
-
- sin
-
- θ
- 0
- =
- n
- 1
-
- sin
-
- θ
- 1
- =
- n
- 2
-
- sin
-
- θ
- 2
- [
- Mathematical
-
- formula
-
- 2
- ]
-
- θ
- 0
- >
- 0.1
- n
- 1
-
- n
- 2
- n
- 2
- 2
- (
- n
- 1
- -
- n
- 0
- )
- 2
- +
- n
- 0
- 2
- (
- n
- 2
- -
- n
- 1
- )
- 2
- Formula
-
- 1
- (
- n
- 0
- +
- n
- 1
- )
- 2
-
- (
- n
- 1
- +
- n
- 2
- )
- 2
-
- cos
-
- θ
- 0
-
- cos
- 2
-
- θ
- 1
-
- cos
-
- θ
- 2
- (
- n
- 0
-
- cos
-
- θ
- 1
- +
- n
- 1
-
- cos
-
- θ
- 0
- )
- 2
-
- (
- n
- 2
-
- cos
-
- θ
- 1
- +
- n
- 1
-
- cos
-
- θ
- 2
- )
- 2
- >
- 1.
- Formula
-
- 2
A light detection device comprising:
- a flow channel substrate including a plurality of flow channels arranged with axes being parallel to each other, the flow channel substrate constituting a flow channel plane;
- an irradiation optical system including a light source and configured to irradiate light emitted from the light source such that
- an oscillation direction of an electric field component of the light is parallel to the flow channel plane,
- an optical axis of the light is included in the flow channel plane, and
- the optical axis forms a predetermined angle θ0 with respect to a direction orthogonal to the axes of the plurality of flow channels on the flow channel plane;
- and
- a light detection system configured to detect light emission from the plurality of flow channels,
- wherein the predetermined angle θ0 satisfies
- [
- Mathematical
-
- formula
-
- 8
- ]
-
- 0.1
- n
- 1
- ❘
- "\[LeftBracketingBar]"
- n
- 1
- -
- n
- 0
- ❘
- "\[RightBracketingBar]"
- <
- θ
- 0
- <
- arc
-
- sin
-
- (
- n
- 1
- 2
- (
- n
- 0
- 2
- +
- n
- 1
- 2
- )
- n
- 0
- 4
- +
- n
- 0
- 2
-
- n
- 1
- 2
- +
- n
- 1
- 4
- )
- where a refractive index of a material of the flow channel substrate is presented by n0, and a refractive index of a material inside the plurality of flow channels is represented by n1.
Dependencies are inferred from the claim text.