A wavelength conversion device according to an aspect of the invention includes a rotary device having a rotary part rotating around an axis, a base member rotated around the axis by the rotary device, an inorganic wavelength conversion element provided to the base member, and a heat radiation member fixed to the base member, the heat radiation member has a ring-like shape surrounding the axis, and spreads outward in a radial direction of the axis beyond the base member, and the heat radiation member and the base member are formed separately from each other.

A wavelength conversion device according to an aspect of the invention includes a rotary device having a rotary part rotating around an axis, a base member rotated around the axis by the rotary device, an inorganic wavelength conversion element provided to the base member, and a heat radiation member fixed to the base member, the heat radiation member has a ring-like shape surrounding the axis, and spreads outward in a radial direction of the axis beyond the base member, and the heat radiation member and the base member are formed separately from each other.

Illumination panel comprises: (1) a receiver substrate assembly including: (a) a rigid sheet of light transmissive material having a first surface, a second surface opposite the first surface, and a conductor pattern attached to the first surface; and (b) at least one receiver assembly affixed to the rigid sheet, each receiver assembly including a light source in electrical communication with the conductor pattern; and (2) at least one light-guide optic attached to and supported by the receiver substrate assembly, each light-guide optic in optical communication with the photovoltaic cell of an associated one of the at least one receiver assembly for guiding light for output via the rigid sheet.

Illumination panel comprises: (1) a receiver substrate assembly including: (a) a rigid sheet of light transmissive material having a first surface, a second surface opposite the first surface, and a conductor pattern attached to the first surface; and (b) at least one receiver assembly affixed to the rigid sheet, each receiver assembly including a light source in electrical communication with the conductor pattern; and (2) at least one light-guide optic attached to and supported by the receiver substrate assembly, each light-guide optic in optical communication with the photovoltaic cell of an associated one of the at least one receiver assembly for guiding light for output via the rigid sheet.

Provided is a fluorescent wheel for a projector capable of suppressing the heating of the phosphor layer and a light emitting device for a projector using the same. The fluorescent wheel for a projector includes: a phosphor layer (12); an annular ceramic substrate (11) which includes a first principal surface provided with the phosphor layer (12) and a second principal surface located on an opposite side to the first principal surface and has a higher thermal conductivity than the phosphor layer (12); and a reflective layer (13) provided on the second principal surface of the ceramic substrate (11).

Provided is a fluorescent wheel for a projector capable of suppressing the heating of the phosphor layer and a light emitting device for a projector using the same. The fluorescent wheel for a projector includes: a phosphor layer (12); an annular ceramic substrate (11) which includes a first principal surface provided with the phosphor layer (12) and a second principal surface located on an opposite side to the first principal surface and has a higher thermal conductivity than the phosphor layer (12); and a reflective layer (13) provided on the second principal surface of the ceramic substrate (11).

Proposed is a lighting system comprising: at least one laser adapted to output light; a pixelated luminous screen for emitting light when excited by incident light; and at least one optical component adapted to redirect and distribute light from the at least one laser to the pixelated luminous screen. The pixelated luminous screen comprises: a plurality of luminous pixels arranged adjacent each other with separated side edges, each pixel comprising luminous material; and a heat sink formed from thermally conductive material. The heat sink is positioned between the plurality of luminous pixels such that it contacts the adjacent side edges of the pixels.

Proposed is a lighting system comprising: at least one laser adapted to output light; a pixelated luminous screen for emitting light when excited by incident light; and at least one optical component adapted to redirect and distribute light from the at least one laser to the pixelated luminous screen. The pixelated luminous screen comprises: a plurality of luminous pixels arranged adjacent each other with separated side edges, each pixel comprising luminous material; and a heat sink formed from thermally conductive material. The heat sink is positioned between the plurality of luminous pixels such that it contacts the adjacent side edges of the pixels.

A cooling fan (1) for cooling an electronic device (2) is disclosed. The cooling fan (1) comprises a heat sink (5) thermally connectable to the electronic device (2), the heat sink (5) having a first clearance side (6a, 6b) centered relative to a longitudinal axis (L) of the heat sink (5), and several thermally conductive fan blades (13) arranged in a circle centered on the longitudinal axis (L). The fan blades (13) are rotatable relative to the heat sink (5)about the longitudinal axis (L) by a motor (19) and each fan blade (13) has a second clearance side (14) facing the first clearance side (6a, 6b). A clearance space (18) is provided between the first clearance side (6) and each second clearance side (14),the majority of said clearance spaces(18) having a size of 100 micrometer or less in a direction perpendicular to the first clearance side (6a, 6b) and the corresponding second clearance side (18).

A cooling fan (1) for cooling an electronic device (2) is disclosed. The cooling fan (1) comprises a heat sink (5) thermally connectable to the electronic device (2), the heat sink (5) having a first clearance side (6a, 6b) centered relative to a longitudinal axis (L) of the heat sink (5), and several thermally conductive fan blades (13) arranged in a circle centered on the longitudinal axis (L). The fan blades (13) are rotatable relative to the heat sink (5)about the longitudinal axis (L) by a motor (19) and each fan blade (13) has a second clearance side (14) facing the first clearance side (6a, 6b). A clearance space (18) is provided between the first clearance side (6) and each second clearance side (14),the majority of said clearance spaces(18) having a size of 100 micrometer or less in a direction perpendicular to the first clearance side (6a, 6b) and the corresponding second clearance side (18).