Abstract: A wavelength conversion device according to an embodiment of the present disclosure includes a first base member, a second base member opposed to the first base member, and a phosphor layer with which a first space is filled. The second base member has a surface opposed to the first base member. The surface has an annular recessed portion. The recessed portion includes therein a plurality of protruding portions extending from an inner peripheral portion toward an outer peripheral portion. The first space is formed by the first base member and the recessed portion of the second base member.

Abstract: A light source unit according to an embodiment of the present disclosure includes: a light source section; and a wavelength conversion element that is excited by exciting light from the light source section to emit fluorescent light. The wavelength conversion element includes a substrate that is rotatable around a rotation axis, a phosphor layer including a plurality of phosphor particles, and a quantum-dot layer including a plurality of quantum dots. The phosphor layer and the quantum-dot layer are disposed in this order relative to the light source section.

Abstract: A light source unit includes a light source section and a fluorescent structure. The fluorescent structure includes a fluorescent part where light from the light source section enters. The fluorescent part includes a transparent grain in addition to a plurality of phosphors.

Abstract: A light-emitting device of an embodiment of the present disclosure includes a first base, a second base that is disposed to face the first base, and a phosphor layer that is provided to be filled with a plurality of phosphor particles between the first base and the second base.

Abstract: An object of the present invention is to improve the efficiency of heat dissipation from a phosphor wheel while suppressing the air resistance and noise of the phosphor wheel during the driving of a light source apparatus. A phosphor wheel according to the present invention includes a disc-like substrate, a phosphor layer formed on the substrate, and a plurality of heat dissipation fins overlapping with each other when viewed in a direction orthogonal to a surface of the substrate.

Abstract: A light source apparatus according to an embodiment of the present disclosure includes: a rotator including a light emission unit on one surface, a heat dissipation member that is coupled to the rotator, and has a first cylindrical surface substantially parallel to a rotation axis of the rotator, and a housing that contains the rotator and the heat dissipation member, and has a second cylindrical surface substantially parallel to the first cylindrical surface of the heat dissipation member.

Abstract: A light source unit according to an embodiment of the disclosure includes a substrate configured to be rotatable, a phosphor layer disposed at a center of the substrate, a light source that irradiates the phosphor layer with exciting light, and a support section that supports a portion, of the substrate, except for the center of the substrate. This makes it difficult for heat generated in the phosphor layer to travel to a motor through the substrate.

Abstract: The invention aims to provide small-sized and highly-reliable light converter and light source unit, as well as a projector each of which makes it possible to cool down heat generated in a fluorescent body in a motorless manner. A light converter of the disclosure includes a fluorescent body that is excited by excitation light; a first light-collecting lens that has a lens surface to which the fluorescent body is bonded, and causes the excitation light to enter the fluorescent body; and a heat-dissipating member to which the lens surface is adhered at least around a region to which the fluorescent body is bonded.

Abstract: A light source unit according to an embodiment of the disclosure includes a substrate configured to be rotatable, a phosphor layer disposed at a center of the substrate, a light source that irradiates the phosphor layer with exciting light, and a support section that supports a portion, of the substrate, except for the center of the substrate. This makes it difficult for heat generated in the phosphor layer to travel to a motor through the substrate.

Abstract: A light source unit includes a light source section and a fluorescent structure. The fluorescent structure includes a fluorescent part where light from the light source section enters. The fluorescent part includes a transparent grain in addition to a plurality of phosphors.

Abstract: The invention aims to provide small-sized and highly-reliable light converter and light source unit, as well as a projector each of which makes it possible to cool down heat generated in a fluorescent body in a motorless manner. A light converter of the disclosure includes: a fluorescent body (12) that is excited by excitation light; a first light-collecting lens (11A) that has a lens surface to which the fluorescent body is bonded, and causes the excitation light to enter the fluorescent body; and a heat-dissipating member (14) to which the lens surface is adhered at least around a region to which the fluorescent body is bonded.

Abstract: A light-emitting device (10A) of an embodiment of the present disclosure includes a first base (11), a second base (13) that is disposed to face the first base, and a phosphor layer (15) that is provided to be filled with a plurality of phosphor particles (151) between the first base and the second base.

Abstract: A light source unit according to an embodiment of the disclosure includes a substrate configured to be rotatable, a phosphor layer disposed at a center of the substrate, a light source that irradiates the phosphor layer with exciting light, and a support section that supports a portion, of the substrate, except for the center of the substrate. This makes it difficult for heat generated in the phosphor layer to travel to a motor through the substrate.

Abstract: An object of the present invention is to improve the efficiency of heat dissipation from a phosphor wheel while suppressing the air resistance and noise of the phosphor wheel during the driving of a light source apparatus. A phosphor wheel (100) according to the present invention includes: a disc-like substrate (120); a phosphor layer (130) formed on the substrate; and a plurality of heat dissipation fins (154a, 154b, and 154c) overlapping with each other when viewed in a direction orthogonal to a surface of the substrate.

Abstract: The invention aims to provide small-sized and highly-reliable light converter and light source unit, as well as a projector each of which makes it possible to cool down heat generated in a fluorescent body in a motorless manner. A light converter of the disclosure includes: a fluorescent body (12) that is excited by excitation light; a first light-collecting lens (11A) that has a lens surface to which the fluorescent body is bonded, and causes the excitation light to enter the fluorescent body; and a heat-dissipating member (14) to which the lens surface is adhered at least around a region to which the fluorescent body is bonded.

Abstract: An object of the present invention is to improve the efficiency of heat dissipation from a phosphor wheel while suppressing the air resistance and noise of the phosphor wheel during the driving of a light source apparatus. A phosphor wheel (100) according to the present invention includes: a disc-like substrate (120); a phosphor layer (130) formed on the substrate; and a plurality of heat dissipation fins (154a, 154b, and 154c) overlapping with each other when viewed in a direction orthogonal to a surface of the substrate.

Abstract: An illuminating unit according to an embodiment of the disclosure includes: a mounting member; a light source section that is aligned on the mounting member, and has one or more solid-state light sources that emit light in a predetermined wavelength band; and an optical conversion section that is coupled to the light source section, and converts outgoing light emitted from the solid-state light source into light in a wavelength band that is different from the wavelength band of the outgoing light.

Abstract: A light conversion device according to one embodiment of the disclosure includes a light conversion section that is rotatable about an axis of rotation, a cooling section that cools the light conversion section, a housing that houses the light conversion section and the cooling section, and a partition member that is provided on the light conversion section, and partitions a space in the housing.

Abstract: An object of the present invention is to improve the efficiency of heat dissipation from a phosphor wheel while suppressing the air resistance and noise of the phosphor wheel during the driving of a light source apparatus. A phosphor wheel (100) according to the present invention includes: a disc-like substrate (120); a phosphor layer (130) formed on the substrate; and a plurality of heat dissipation fins (154a, 154b, and 154c) overlapping with each other when viewed in a direction orthogonal to a surface of the substrate.

Abstract: A display device includes a first substrate, a second substrate, and a plurality of light emitting sections. The first substrate includes a first surface and a second surface which faces the first surface. The second substrate is arranged to face the first substrate, and is configured with a first surface which faces the second surface of the first substrate, and a second surface which faces the first surface. The plurality of light emitting sections is provided on the second surface of the first substrate while being separated from the second substrate. A light transmission suppression layer on which a light transmission section to transmit light from light emitting sections is provided is formed on the second surface of the second substrate in correspondence to each light emitting section. An anti-reflection layer is formed in the light transmission section.