Abstract: A reflective diffusion device including a reflecting member and a diffusing member is provided, which are adapted for reflecting and diffusing an excitation light beam emitted from a light source module. The reflecting member has a central axis and includes a reflective surface facing the light source module. The diffusing member is disposed on a portion of the reflective surface of the reflecting member. The excitation light beam is incident on a first position of the reflective diffusion device in an incident direction parallel to the central axis, is reflected by the reflective surface and transmitted to a second position of the reflective diffusion device, and is then reflected by the reflective surface to maintain the excitation light beam or form a diffused light beam. The excitation light beam or the diffused light beam exits from the reflective diffusion device in an exit direction parallel to the central axis.

Abstract: A reflective diffusion device includes a driving element having a rotation shaft, a reflective element including a central axis and disposed on the driving element, and a diffusion element. The central axis and the rotation shaft are collinear. The diffusion element is disposed on at least one portion of the reflective element, and the driving element drives the reflective element and the diffusion element to rotate along the central axis. A laser beam enters the diffusion element along an incident direction, is transmitted to the reflective element and reflected by the reflective element, and exits from the diffusion element along an exit direction to generate a diffusion beam. An incident angle between the incident direction and the central axis is greater than 0 degree, and an emergent angle between the exit direction and the central axis is greater than or equal to 0 degree.

Abstract: A wavelength conversion module including a wavelength conversion wheel, a driver, and a weight member is provided. The wavelength conversion wheel includes a rotating plate, and the rotating plate has a first side and a second side opposite to each other. The driver is connected to the first side of the rotating plate, and drives the rotating plate to rotate around a rotation shaft of the driver as an axis. The weight member is attached to the second side of the rotating plate and rotates synchronously with the rotating plate. The rotating plate comprises a heat insulation region and a heat dissipation region. The heat insulation region and the heat dissipation region do not overlap each other. The heat insulation region comprises a first heat insulation region located at the first side and a second heat insulation region located at the second side.

Abstract: An optical processing turntable, a wavelength conversion module, and a projection apparatus are provided. The optical processing turntable includes a substrate and a driver assembly. The substrate has a fixing hole and a first side and a second side opposite to each other. The driver assembly passes through the fixing hole to be disposed on the substrate to drive the substrate to rotate. The driver assembly has two locking surfaces, where the two locking surfaces are respectively located on the first side and the second side of the substrate. In the projection apparatus using the optical processing turntable provided by the invention, noise generated by structural vibration may be effectively reduced, and a prolonged service life is provided.

Abstract: A color wheel module includes a driving assembly, a substrate, a first wavelength conversion layer, and a second wavelength conversion layer. The substrate includes an outer periphery disposed around the central axis and a first surface perpendicular to the central axis, and has a first light conversion region located on the outer periphery and a second light conversion region located on the first surface. The first wavelength conversion layer is disposed on the first light conversion region. The second wavelength conversion layer is disposed on the second light conversion region. The first excitation beam is incident to the first light conversion region along a direction perpendicular to the central axis and is converted into a first color converted beam. The second excitation beam is incident to the second light conversion region along a direction parallel to the central axis and is converted into a second color converted beam.

Abstract: Provided is a wavelength conversion module including a driving assembly, a metal substrate, a first and a second concave-convex structure, a transparent plate, and a wavelength conversion layer. The driving assembly is connected to the substrate and drives the substrate to rotate. The substrate and the first and the second concave-convex structure are integrally formed. The first and the second concave-convex structure are disposed around the center, and the second concave-convex structure surrounds the first concave-convex structure. The substrate has a first balance hole and an accommodating groove. The first concave-convex structure is located between the accommodating groove and the center. The first balance hole is located in the accommodating groove and penetrates the substrate. The transparent plate is disposed in the accommodating groove of the substrate and covers the first balance hole. The wavelength conversion layer is arranged in an annular pattern with the transparent plate.

Abstract: A wavelength conversion module includes a ceramic substrate, a wavelength conversion layer, and a plurality of colloidal bosses. The ceramic substrate has a first surface. The wavelength conversion layer is disposed on the first surface of the ceramic substrate. The colloidal bosses are separately from each other disposed on the ceramic substrate and at least located on the first surface. The colloidal bosses and the wavelength conversion layer are separated from each other, and a heat resistant temperature of the colloidal bosses is higher than 500 degrees. The above wavelength conversion module has favorable heat dissipation effect.

Abstract: A lighting module is configured to provide a lighting beam and includes a light source providing an excitation beam, a rotating wheel module disposed on a transmission path of the excitation beam, and a first airflow generator. The rotating wheel module includes driving blades disposed at an interval. Any two adjacent driving blades form an airflow channel. The first airflow generator generates a first airflow that flows through the airflow channels of the driving blades to drive the rotating wheel module to rotate. At least a part of the light source is disposed on a flow path of the first airflow. With the foregoing design, the rotating wheel module can be passively rotated by the first airflow without a driver. Since a driver is omitted, the lighting module has a smaller size and greater design flexibility, and the rotating wheel module also has a larger usable area.

Abstract: An optical processing turntable and a projection device are provided. The optical processing turntable has a first mass center and a height. The optical processing turntable includes a substrate and a driving component. The substrate has a second mass center. The driving component is disposed on the substrate to drive the substrate to rotate. The driving component has a locking surface. A distance between the locking surface and one of the first mass center and the second mass center relatively far from the locking surface is less than or equal to ? of the height. The invention can effectively reduce the vibration and noise of the optical processing turntable during high-speed operation, and can increase the operating life of the optical processing turntable.

Abstract: A color wheel module includes a driving assembly, a substrate, a first wavelength conversion layer, and a second wavelength conversion layer. The substrate includes an outer periphery disposed around the central axis and a first surface perpendicular to the central axis, and has a first light conversion region located on the outer periphery and a second light conversion region located on the first surface. The first wavelength conversion layer is disposed on the first light conversion region. The second wavelength conversion layer is disposed on the second light conversion region. The first excitation beam is incident to the first light conversion region along a direction perpendicular to the central axis and is converted into a first color converted beam. The second excitation beam is incident to the second light conversion region along a direction parallel to the central axis and is converted into a second color converted beam.

Abstract: A color wheel module is disposed on a transmission path of an excitation beam and includes a driving assembly, a substrate, a fastening element, at least one wavelength conversion layer, and filters. The substrate is connected to the filters, and the filters are fixed between the fastening element and the driving assembly. The substrate includes an outer periphery and a light conversion region located on the outer periphery. The outer periphery extends in an extension direction and has a width parallel to the extension direction. The extension direction and a radial direction of the substrate forms an included angle. The wavelength conversion layers are disposed in the light conversion region. The excitation beam is incident on the light conversion region of the substrate and converted into a conversion beam, and the conversion beam is guided to penetrate the corresponding filter along a direction parallel to the central axis.

Abstract: A wavelength conversion module and a manufacturing method thereof are provided. The wavelength conversion module includes a wavelength conversion substrate, a driving assembly, and a polymer adhesive ring. The driving assembly is connected to the wavelength conversion substrate to drive the wavelength conversion substrate to rotate around an axis of the driving assembly. The polymer adhesive ring is disposed on the wavelength conversion substrate.

Abstract: A beam splitting element as provided includes an optical substrate and a diffuse reflection layer. The optical substrate is configured to reflect or allow the incident beam to pass through. The diffuse reflection layer is disposed on a portion of a surface of the optical substrate. The incident beam is split into first and second split beams through the beam splitting element and satisfies one of the following conditions: field angles of the first and second split beams exit from the beam splitting element are different; the field angles of the first and second split beams exit from the beam splitting element are the same, and exit directions of the first and second split beams are parallel to each other. A projection device having the beam splitting element is also provided.

Abstract: A phosphor wheel and a projection apparatus with the phosphor wheel are disclosed. A phosphor wheel includes a driving motor, a temperature interference element, a substrate and at least one light wavelength converting layer. The driving motor includes a motor body and a rotating member. The motor body drives the rotating member to rotate relative to the motor body along a rotation axis. The temperature interference element is connected with the rotating member and the substrate. The motor body drives the rotating member to rotate the temperature interference element and the substrate relative to the motor body. The substrate includes a first surface and a second surface disposed opposite to each other. The second surface is located between the first surface and the rotating member. The light wavelength converting layer is disposed on the first surface of the substrate.

Abstract: A wavelength conversion element includes a substrate and a wavelength conversion layer. The substrate has a bearing surface and a first positioning portion, and the first positioning portion is located on the bearing surface. The wavelength conversion layer is disposed on the bearing surface and has a second positioning portion corresponding to the first positioning portion, and the second positioning portion is adapted to engage with the first positioning portion. A projection apparatus having the wavelength conversion element is also provided. The disclosure is able to improve assemble accuracy and light conversion efficiency of the wavelength conversion element.

Abstract: A wavelength conversion module including a wavelength conversion wheel, a driver, and a weight member is provided. The wavelength conversion wheel includes a rotating plate, and the rotating plate has a first side and a second side opposite to each other. The driver is connected to the first side of the rotating plate, and drives the rotating plate to rotate around a rotation shaft of the driver as an axis. The weight member is attached to the second side of the rotating plate and rotates synchronously with the rotating plate. The rotating plate comprises a heat insulation region and a heat dissipation region. The heat insulation region and the heat dissipation region do not overlap each other. The heat insulation region comprises a first heat insulation region located at the first side and a second heat insulation region located at the second side.

Abstract: A wavelength conversion module includes a ceramic substrate, a wavelength conversion layer, and a plurality of colloidal bosses. The ceramic substrate has a first surface. The wavelength conversion layer is disposed on the first surface of the ceramic substrate. The colloidal bosses are separately from each other disposed on the ceramic substrate and at least located on the first surface. The colloidal bosses and the wavelength conversion layer are separated from each other, and a heat resistant temperature of the colloidal bosses is higher than 500 degrees. The above wavelength conversion module has favorable heat dissipation effect.

Abstract: A wavelength conversion module, including a substrate, a wavelength conversion layer, and multiple adhesive bosses, is provided. The substrate has a first surface. The wavelength conversion layer is configured on the first surface of the substrate. The adhesive bosses are separately configured on the first surface of the substrate. The wavelength conversion layer surrounds the adhesive bosses, and each of the adhesive bosses is configured separately from the wavelength conversion layer. The disclosure also provides a projector including the wavelength conversion module. The wavelength conversion module has better heat dissipation effect.

Abstract: A wavelength conversion device includes a driver, a substrate and a support. The support is disposed between the driver and the substrate. The support is connected to the substrate and the driver. The driver drives the support and the substrate to rotate about a central axis. The support includes at least one through hole. The invention also provides a projection device including a light source system, the aforementioned wavelength conversion device, a light valve, and a projection lens.

Abstract: The invention provides a wavelength conversion device and a projection device including the same. The wavelength conversion device includes a substrate, a reflective layer, and a wavelength conversion layer. The reflective layer has different thicknesses in a radial direction of the substrate. The invention further provides another wavelength conversion device and another projection device including the same. In the wavelength conversion device, the reflective layer includes a first colloid and reflective particles distributed in the first colloid. The reflective layer includes an inner reflective layer, a central reflective layer and an outer reflective layer. The concentration of the reflective particles in the central reflective layer is different from the concentration of the reflective particles in the inner reflective layer and the concentration of the reflective particles in the outer reflective layer.