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US 10,381,532 B2Granted
Wavelength conversion device and lighting apparatus
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMasahito Yamana, Noboru Iizawa, Jun Hirai, Yoshiyuki Nakano
Life of this patent
Estimating the term…
Abstract
A wavelength conversion device includes a light source for emitting light having a predetermined wavelength in a wavelength region from ultraviolet light to visible light, a phosphor layer for performing wavelength conversion on light which is emitted from the light source and incident on an incidence face, and an optical member which is arranged between the light source and the phosphor layer, splits and separates light emitted from the light source and emits the split and separated light beams to the incidence face of phosphor layer.
Claims14
A lighting apparatus comprising:
- a wavelength conversion device;
- a heat transfer plate arranged in surface contact with a board having light-transmissivity and including one or more portions that hold the phosphor layer of the wavelength conversion device, the heat transfer plate including one or more first opening portions at positions overlapping with the one or more portions, respectively;
- and
- a heat dissipation plate that is arranged in surface contact with a surface of the heat transfer plate on a reverse side of a surface of the heat transfer plate that is in surface contact with the board, and includes a second opening portion at a position overlapping with the one or more first opening portions of the heat transfer plate,
- wherein the wavelength conversion device includes:
- a light source that emits light having a predetermined wavelength in a wavelength region from ultraviolet light to visible light;
- a phosphor layer that performs wavelength conversion on light which is emitted from the light source and incident on an incidence face;
- and
- an optical member that is arranged between the light source and the phosphor layer, splits and separates light emitted from the light source, and projects beams of the light that has been split and separated onto the incidence face of the phosphor layer.
6 more elements
A lighting apparatus comprising:
- a wavelength conversion device;
- a heat transfer plate arranged in surface contact with a board having light-transmissivity and including one or more portions that hold the phosphor layer of the wavelength conversion device, the heat transfer plate including one or more first opening portions at positions overlapping with the one or more portions, respectively;
- and
- a heat dissipation plate that is arranged in surface contact with a surface of the board on a reverse side of a surface of the board that is in surface contact with the heat transfer plate, and includes a second opening portion at a position overlapping with the one or more first opening portions of the heat transfer plate,
- wherein the wavelength conversion device includes:
- a light source that emits light having a predetermined wavelength in a wavelength region from ultraviolet light to visible light;
- a phosphor layer that performs wavelength conversion on light which is emitted from the light source and incident on an incidence face;
- and
- an optical member that is arranged between the light source and the phosphor layer, splits and separates light emitted from the light source, and projects beams of the light that has been split and separated onto the incidence face of the phosphor layer.
6 more elements
A lighting apparatus comprising:
- a wavelength conversion device;
- a first heat transfer plate arranged in surface contact with a board having light-transmissivity and including one or more portions that hold the phosphor layer of the wavelength conversion device, the first heat transfer plate including one or more first opening portions arranged at positions overlapping with the one or more portions;
- a second heat transfer plate that is arranged in surface contact with a surface of the board on a reverse side of a surface of the board that is in surface contact with the first heat transfer plate, and includes one or more second opening portions arranged at positions overlapping with the one or more portions, respectively;
- and
- a heat dissipation plate that is arranged in surface contact with a surface of the second heat transfer plate on a reverse side of a surface of the second heat transfer plate that is in surface contact with the board, and includes a third opening portion at a position overlapping with the one or more second opening portions of the second heat transfer plate,
- wherein the wavelength conversion device includes:
- a light source that emits light having a predetermined wavelength in a wavelength region from ultraviolet light to visible light;
- a phosphor layer that performs wavelength conversion on light which is emitted from the light source and incident on an incidence face;
- and
- an optical member that is arranged between the light source and the phosphor layer, splits and separates light emitted from the light source, and projects beams of the light that has been split and separated onto the incidence face of the phosphor layer.
7 more elements
Dependencies are inferred from the claim text.