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US 2011/0032724 A1Published application
Light emitting device and method for manufacturing same, lighting fixture, and lighting system
AssigneesHarison Toshiba Lighting Corp., Kabushiki Kaisha Toshiba
InventorJunichi Kinoshita
Life of this patent
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Abstract
A light emitting device includes: a light emitting element; a substrate including a groove-like light guide extending along a first direction, emission light emitted from the light emitting element and introduced into the light guide being reflected by an inner wall surface of the light guide, spreading along the first direction, and being turned into upward light directed upward above the substrate; and a lens provided above the light guide and configured to collect the upward light and control light distribution characteristic in a plane generally perpendicular to the first direction.
Claims20
A light emitting device comprising:
- a light emitting element;
- a substrate including a groove-like light guide extending along a first direction, emission light emitted from the light emitting element and introduced into the light guide being reflected by an inner wall surface of the light guide, spreading along the first direction, and being turned into upward light directed upward above the substrate;
- and
- a lens provided above the light guide and configured to collect the upward light and control light distribution characteristic in a plane generally perpendicular to the first direction.
1 more element
A lighting fixture comprising:
- a light emitting device including:
- a light emitting element;
- a substrate including a groove-like light guide extending along a first direction, emission light emitted from the light emitting element and introduced into the light guide being reflected by an inner wall surface of the light guide with spreading along the first direction and turned into upward light directed upward above the substrate;
- a phosphor-mixed layer provided above the light guide and capable of absorbing the emission light and emitting wavelength-converted light;
- and
- a lens provided above the phosphor-mixed layer and configured to collect the upward light and the wavelength-converted light and control light distribution characteristic of mixed light of the upward light and the wavelength-converted light in a plane generally perpendicular to the first direction;
- a light guide plate configured to guide the mixed light injected from one side surface;
- and
- an optical film stack capable of diffusing and emitting the mixed light emitted from an upper surface of the light guide plate.
6 more elements
A lighting fixture comprising:
- a light emitting device including:
- a light emitting element;
- a substrate including a groove-like light guide extending along a first direction, emission light emitted from the light emitting element and introduced into the light guide being reflected by an inner wall surface of the light guide, spreading along the first direction, and being turned into upward light directed upward above the substrate;
- and
- a lens provided above the light guide and configured to collect the upward light and control light distribution characteristic in a plane generally perpendicular to the first direction;
- an actuator configured to vary tilt angle of the substrate;
- and
- an actuator driving circuit configured to drive the actuator.
5 more elements
A lighting system comprising:
- a lighting fixture including:
- a light emitting device including:
- a light emitting element;
- a substrate including a groove-like light guide extending along a first direction, emission light emitted from the light emitting element and introduced into the light guide being reflected by an inner wall surface of the light guide, spreading along the first direction, and being turned into upward light directed upward above the substrate;
- and
- a lens provided above the light guide and configured to collect the upward light and control light distribution characteristic in a plane generally perpendicular to the first direction;
- an actuator configured to vary tilt angle of the substrate;
- and
- an actuator driving circuit configured to drive the actuator;
- a sensor capable of detecting an image of an object irradiated with outgoing light from the lens,
- a light emitting element power supply circuit configured to supply a current to the light emitting element;
- and
- a control circuit configured to use the detected image to output to the light emitting element power supply circuit a light emitting element control signal for controlling the current and to output to the actuator driving circuit an actuator control signal for controlling illumination direction of the outgoing light.
10 more elements
A lighting system comprising:
- a lighting fixture including:
- a light emitting device including;
- a light emitting element;
- a substrate including a groove-like light guide extending along a first direction, emission light emitted from the light emitting element and introduced into the light guide being reflected by an inner wall surface of the light guide, spreading along the first direction, and being turned into upward light directed upward above the substrate;
- a phosphor-mixed layer provided above the light guide and capable of absorbing the emission light and emitting wavelength-converted light;
- and
- a lens provided above the phosphor-mixed layer and configured to collect the upward light and the wavelength-converted light and control light distribution characteristic of mixed light of the upward light and the wavelength-converted light in the plane generally perpendicular to the first direction;
- an actuator configured to vary tilt angle of the substrate;
- and
- an actuator driving circuit configured to drive the actuator;
- a sensor capable of detecting an image of an object irradiated with outgoing light from the lens;
- a light emitting element power supply circuit configured to supply a current to the light emitting element;
- and
- a control circuit configured to use the detected image to output to the light emitting element power supply circuit a light emitting element control signal for controlling the current and to output to the actuator driving circuit an actuator control signal for controlling illumination direction of the outgoing light.
11 more elements
A method for manufacturing a light emitting device, comprising:
- forming a electrode pattern, a groove-like light guide, and a separation groove on a wafer-like substrate;
- mounting a light emitting element to the substrate to electrically connect an electrode of the light emitting element and the electrode pattern, emission light of the light emitting element being capable of being introduced into the light guide;
- forming a phosphor-mixed layer on a first major surface of a transparent substrate and providing a lens on a second major surface side of the transparent substrate opposite to the first major surface;
- laminating the substrate to the first major surface side of the transparent substrate to make the light guide opposite to the phosphor-mixed layer;
- and
- cutting and separating the substrate and the transparent substrate along the separation groove.
3 more elements
Dependencies are inferred from the claim text.