Abstract: A base is applied in a wavelength conversion device. The base includes a first surface and a second surface. A plurality of first holes are formed on the first surface. The second surface and the first surface are respectively located on opposite sides of the base. A plurality of second holes are formed on the second surface. One of the first holes is communicated with at least one of the second holes. An edge of the at least one of the second holes laterally extends beyond an edge of the one of the first holes.

Abstract: A wavelength conversion component includes a substrate, a reflection layer, and a phosphor layer. The reflection layer is disposed on the substrate and extends along a first direction. The reflection layer has a top surface that is away from the substrate. The top surface has a height variation on a second direction that is perpendicular to the first direction along the first direction. The phosphor layer is disposed on the reflection layer. The phosphor layer has a thickness variation on the second direction along the first direction. A ratio of the height of the top surface and the thickness of the phosphor layer increases and decreases reciprocally along the first direction.

Abstract: An optical wavelength conversion structure includes a substrate, a reflective layer, an oxide stack layer, and a wavelength conversion layer. The reflective layer is disposed on the substrate. The oxide stack layer is disposed on the reflective layer. The oxide stack layer has a gas barrier index of about 300-1000, and the gas barrier index is defined as ? i = 1 n ? L i ? d i 0 . 5 where L is a thickness, d is a density, and n is a number of layers. The wavelength conversion layer is disposed on the oxide stack layer.

Abstract: A wavelength conversion member includes a substrate, a phosphor layer, and a ventilated blade. The substrate is configured to rotate based on an axis. The phosphor layer is disposed on the substrate. The ventilated blade is disposed on the substrate and has a pore density between 10 ppi and 500 ppi or a volume porosity between 5% and 95%.

Abstract: A wavelength conversion member includes a substrate, a phosphor layer, and a non-ventilated blade. The substrate is configured to rotate based on an axis. The phosphor layer is disposed on the substrate. The non-ventilated blade has a roughness between 5 ?m and 1.25 mm, or a specific surface area of the non-ventilated blade exceeds a geometric area of the non-ventilated blade by more than 10%.

Abstract: An optical engine module includes a first light source module, a second light source module, and a controller. The first light source module includes a plurality of solid state light emitters. The solid state light emitters are configured to respectively emit different color lights. The second light source module is configured to emit fluorescent light. The controller is configured to: drive the first light source module in a first light emitting mode, in which the color lights are configured to be mixed to produce a first white light; and drive the first light source module and the second light source module in a second light emitting mode, in which the color lights and the fluorescent light are configured to be mixed to produce a second white light.

Abstract: A wavelength conversion element includes a substrate, a reflective layer, an inorganic light luminescence layer and an organic light luminescence layer. The reflective layer is disposed over the substrate. The inorganic light luminescence layer is disposed over the reflective layer and includes a first fluorescent material. The organic light luminescence layer is disposed between the reflective layer and the inorganic light luminescence layer, and includes a second fluorescent material. A refractive index of the inorganic light luminescence layer is greater than that of the organic light luminescence layer, and a thickness of the inorganic light luminescence layer is greater than a thickness of the organic light luminescence layer.

Abstract: A wavelength device includes a substrate, a photoluminescence layer, a light spot adjusting layer, and a reflecting layer. The photoluminescence layer is disposed over the substrate, and is configured to receive incident light and convert the incident light to excitation light. The light spot adjusting layer is disposed between the substrate and the photoluminescence layer, and is configured to receive the excitation light and the unconverted incident light and to adjust the light path of the excitation light and the unconverted incident light, in which a refractive index of the photoluminescence layer is different from a refractive index of the light spot adjusting layer. The reflecting layer is disposed between the light spot adjusting layer, and is configured to reflect the incident light and the excitation light.

Abstract: A wavelength conversion member includes a substrate, a phosphor layer, and a ventilated blade. The substrate is configured to rotate based on an axis. The phosphor layer is disposed on the substrate. The ventilated blade is disposed on the substrate and has a pore density between 10 ppi and 500 ppi or a volume porosity between 5% and 95%.

Abstract: A wavelength device includes a substrate, a photoluminescence layer, a light spot adjusting layer, and a reflecting layer. The photoluminescence layer is disposed over the substrate, and is configured to receive incident light and convert the incident light to excitation light. The light spot adjusting layer is disposed between the substrate and the photoluminescence layer, and is configured to receive the excitation light and the unconverted incident light and to adjust the light path of the excitation light and the unconverted incident light, in which a refractive index of the photoluminescence layer is different from a refractive index of the light spot adjusting layer. The reflecting layer is disposed between the light spot adjusting layer, and is configured to reflect the incident light and the excitation light.

Abstract: A vat heating device is provided, including a vat and a heater. The vat has a bottom plate. The vat is used to accommodate a photosensitive resin. The heater is disposed on the bottom plate, adjacent to the photosensitive resin. The heater is used to heat the photosensitive resin. The heater is on an optical path of a light source for curing the photosensitive resin. A photocuring three-dimensional molding system containing the above vat heating device is also provided.

Abstract: A wavelength conversion element includes a substrate, a reflective layer, an inorganic light luminescence layer and an organic light luminescence layer. The reflective layer is disposed over the substrate. The inorganic light luminescence layer is disposed over the reflective layer and includes a first fluorescent material. The organic light luminescence layer is disposed between the reflective layer and the inorganic light luminescence layer, and includes a second fluorescent material. A refractive index of the inorganic light luminescence layer is greater than that of the organic light luminescence layer, and a thickness of the inorganic light luminescence layer is greater than a thickness of the organic light luminescence layer.

Abstract: A diffuser includes a first substrate and a gel layer. The first substrate has a first refractive index n1. The gel layer includes a body and at least one microstructure. The body is disposed on the first substrate. The microstructure is disposed on the body, wherein the dimension of the microstructure is smaller than that of the body. The body is located between the microstructure and the first substrate. The gel layer has a second refractive index n2, and n1>n2.

Abstract: A phosphor device of an illumination system emitting a first waveband light and having an optical path includes a first section and a first phosphor agent. The first phosphor agent is coated on the first section. The first waveband light is received and converted into a second waveband light by the first phosphor agent. The second waveband light is directed to the optical path. The range of the spectrum of the second waveband light includes at least a first color light and a second color light, so that the first color light or the second color light is separated from the second waveband light along the optical path. Therefore, the diversity of the design of the phosphor device is enhanced, the manufacturing cost and the size of product are reduced, and the color purity is enhanced.

Abstract: A phosphor wheel includes a substrate, at least a phosphor agent and a plurality of vortex generators. The substrate has a first region and a second region. The second region has a plurality of openings. The phosphor agent is disposed on the first region for converting the wavelength of waveband light. Each vortex generator includes at least a guide vane. Each guide vane is disposed on the second region, and the projection, which is on the second region, of each guide vane is corresponded to one of the openings, such that a vortex is generated during a rotation of the substrate. Therefore, the efficiency of heat exchange is enhanced, the temperature of light spot is reduced, and further the output efficiency of light of the phosphor agent is increased.

Abstract: A laser light source for projector includes a laser light source module, first and second light receiving modules, a phosphor wheel, and a light combining module. The phosphor wheel has a first and a second side. The phosphor wheel receives the laser and converts the laser into first and second fluorescent light. The phosphor wheel receives the laser at a first side and emits the first fluorescent light. The phosphor wheel emits the second fluorescent light at a second side. After the first fluorescent light and the second fluorescent light passes through the first and second light receiving modules, at least one of the directions of optical axes of the first and second fluorescent light is changed. The light combining module receives the first and second fluorescent lights and emits a combined light.

Abstract: A wavelength converting module includes a wavelength converting unit. The wavelength converting unit is at least made of a phosphor material. The wavelength converting unit is a solid rod-shaped structure, in which two opposite end surfaces of the rod-shaped wavelength converting unit are a light-entrance surface and a light-exit surface respectively.

Abstract: An optical wavelength converter includes a first substrate, a first wavelength conversion material, and a second substrate. The first substrate has at least one first segment. The first wavelength conversion material is contained in the first segment for converting a first waveband light into a second waveband light. The second waveband light is reflected by the first segment. The second substrate is arranged beside the first substrate, and has at least one second segment. The first waveband light is transmitted through the second segment.

Abstract: A fluorescent color wheel includes a substrate, a working fluid, and a fluorescent powder layer. The substrate has at least one flow channel therein. The flow channel has a first end and a second end respectively adjacent to a central region and a peripheral region of the substrate. The working fluid flows in the flow channel in a gas-liquid coexistence state. The fluorescent powder layer is disposed on the substrate and located at the peripheral region. The disclosure further discloses a projector adopting the fluorescent color wheel.

Abstract: A fluorescent color wheel includes a substrate, a working fluid, and a fluorescent powder layer. The substrate has at least one flow channel therein. The flow channel has a first end and a second end respectively adjacent to a central region and a peripheral region of the substrate. The working fluid flows in the flow channel in a gas-liquid coexistence state. The fluorescent powder layer is disposed on the substrate and located at the peripheral region. The disclosure further discloses a projector adopting the fluorescent color wheel.