Abstract: The invention provides an optical module, including a first frame body, a second frame body, a first adjustment member, and a first optical component. The first frame body is rotatably connected to a base body and includes a first adjustment portion and a boss, and the first adjustment portion drives the first frame body to rotate with a first axial line as a rotating axis. The second frame body is rotatably connected to the first frame body and includes a second adjustment portion. The first adjustment member is screwed to the boss and moves along the first axial line relative to the boss to push the second adjustment portion and drive the second frame body to rotate with a second axial line as a rotating axis. The first optical component is disposed on the second frame body. The invention further provides a projector including the foregoing optical module.

Abstract: A light source module and a projection apparatus are provided. The light source module includes a blue light source, a red light source, a wavelength conversion wheel and a filter wheel. The blue light source provides a blue light beam. The red light source provides a red light beam. The wavelength conversion wheel is disposed on a transmission path of the blue light beam and has a wavelength conversion region. The blue light beam is converted into a green light beam by the wavelength conversion region. The filter wheel is disposed on transmission paths of the blue light beam and the red light beam. The filter wheel includes a filter region and a diffusion region. A filter spectrum of the filter region includes a first bandwidth and a second bandwidth. The first bandwidth and the second bandwidth are separated with each other.

Abstract: An illumination system and a projection device are provided. The illumination system includes at least one laser light source providing at least one laser beam and a polarizing rotation module including a first axle, a first driving element, and a polarizing element. The first axle has a first revolution frequency. The polarizing element is disposed on a transmission path of the laser beam. The first driving element causes the polarizing element to rotate in a temporally sequenced manner. When the polarizing element is rotated, the laser beam is transmitted to the polarizing element at a specific frequency in a plurality of first time periods. The laser beam passing through the polarizing element has different polarizing states at different times. The specific frequency and the first revolution frequency of the first axle are not exactly divisible by each other. The invention can generate an image with uniform polarizing direction.

Abstract: An illumination system and a projection apparatus are provided. The illumination system includes a coherent light source, an optical module, and a first light-diffusing device. The coherent light source emits a coherent light beam. The optical module and the first light-diffusing device are located on a transmission path of the coherent light beam. The optical module has an optical surface and a light-diffusing surface, and the coherent light beam focuses on a first position through the optical surface of the optical module. The first light-diffusing device is located at the first position or in vicinity of the first position. The coherent light beam passes through the first light-diffusing device so that a diffusion angle of the coherent light beam is sequentially changed. A display frame exhibiting a uniform luminance is thereby provided by the illumination system and the projection apparatus of the invention.

Abstract: A projection apparatus and an illumination system are provided. The illumination system includes a light source, a first lens element and an optical wavelength conversion module. The light source emits a light beam. The first lens element is disposed on a transmission path of the light beam from the light source. The first lens element has a curved surface and a multidirectional-plane. The multidirectional-plane and the curved surface are disposed opposite to each other. The multidirectional-plane includes sub-planes facing different directions. The optical wavelength conversion module is disposed on a transmission path of the light beam from the first lens element. The optical wavelength conversion module converts a first portion of the light beam from the first lens element into a converted light beam. The converted light beam and a second portion of the light beam from the first lens element form an illumination beam.

Abstract: A projection device includes a light source module for emitting an illumination beam, an optical engine module for receiving the illumination beam and forming an image beam, and a projection lens for receiving and projecting the image beam to an outside of the projection device. The optical engine module includes first and second shells coupled in a first direction, an elastic sealing member and electronic components. The shells form an accommodation space in which the electronic components are disposed. The elastic sealing member has opposite first and second surfaces. The first surface has an engagement groove in which a portion of the first shell is engaged. The second shell abuts against the second surface. Signal transmission components of the electronic components are disposed through the elastic sealing member to pass through the shells.

Abstract: An illumination system and a projection device using this illumination system are provided. The illumination system is adapted to provide an illumination light beam. The illumination system includes a plurality of light emitting element package structures and a light condensing element. The light emitting element package structures are adapted to provide a plurality of excitation light beams, respectively. The light condensing element is disposed on transmission paths of the excitation light beams. Each of the light emitting element package structures includes a substrate, a plurality of light emitting chips, and a package lens. The light emitting chips are disposed on the substrate. The package lens is disposed on the substrate and covers the light emitting chips. Each of the package lenses includes a plurality of lens units, and the lens units in each of the package lenses are integrally connected to cover the light emitting chips.

Abstract: An illumination system including an excitation light source, a wavelength conversion module, a light splitting module and a light homogenizing element is provided. The light splitting module has a transfer region and a light splitting region, an excitation beam incident to the wavelength conversion module is converted into a wavelength converted beam by a wavelength conversion region, and is reflected by the reflection region, and the excitation beam coming from the wavelength conversion module is split into a first and a second sub-excitation beams by the light splitting region, and the first sub-excitation beam and the second sub-excitation beam form an excitation combination beam. The light homogenizing element uniforms the excitation combination beam and the wavelength converted beam, where an angle of the excitation combination beam incident to the light homogenizing element is 0.25 times larger than an angle of the wavelength converted beam incident to the light homogenizing element.

Abstract: A projection apparatus and an illumination system are provided. The illumination system includes an excitation light source and a light wavelength conversion module. The excitation light source is adapted to provide an excitation beam. The light wavelength conversion module includes a first phosphor wheel and a second phosphor wheel. The second phosphor wheel is disposed adjacent to the first phosphor wheel, and the first phosphor wheel and the second phosphor wheel are respectively disposed on transmission paths of a first part and a second part of the excitation beam, such that during a period that the excitation light source is turned on, the first phosphor wheel and the second phosphor wheel are both irradiated by the excitation beam. The illumination system of the invention avails improving phosphor conversion efficiency and avoiding burning the phosphor powder. The projection apparatus has good performance.

Abstract: A projector and its illumination system and wavelength conversion device are provided. The wavelength conversion device includes a substrate, a wavelength converting portion, and a wavelength maintaining portion. The substrate has a rotation axis. The wavelength converting portion surrounds the rotation axis and is adapted to receive the first beam and convert a first portion of the first beam into a second beam. The wavelength maintaining portion surrounds the rotation axis and is adapted to receive the first beam and guide a second portion of the first beam. A ratio of the first portion of the first beam with respect to the first beam is greater than a ratio of the second portion of the first beam with respect to the first beam. The illumination system and the wavelength conversion device in the projector reduce the number of optical elements, thereby reducing the cost and the size of the projector.

Abstract: An illumination system includes a coherent light source, a first light-combining device, an optical wavelength conversion module, and a first auxiliary light source. The coherent light source emits a coherent light beam. The first light-combining device is disposed on a transmission path of the coherent light beam. The light wavelength conversion module is disposed on a transmission path of the coherent light beam transmitted from the first light-combining device and converts the coherent light beam into a first converted light beam, and reflects the first converted light beam back to the first light-combining device. The first auxiliary light source emits a first auxiliary light beam which is transmitted to the first light-combining device. The first light-combining device combines the first auxiliary light beam and the first converted light beam. A projection apparatus and a method for driving the illumination system are also provided.

Abstract: A projection apparatus and an illumination system are provided. The illumination system includes a light source emitting a light beam, at least one light-diffusion element disposed on a transmission path of the light beam from the light source and inclined to the transmission path of the light beam from the light source, a wavelength conversion module disposed on a transmission path of the light beam from the at least one light-diffusion element. A long axis direction of a light spot projected on the wavelength conversion module is perpendicular to an extending direction of a boundary between the reference plane and the at least one light-diffusion element. The wavelength conversion module is adapted to convert a first portion of the light beam from the light-diffusion element to a converted light beam. The converted light beam and a second portion of the light beam from the light-diffusion element form a illumination light.

Abstract: An illumination system including a plurality of first laser source modules and a diffusion component is provided. The plurality of first laser source modules are adapted to emit a plurality of first laser beams. The diffusion component is disposed on transmission paths of the plurality of first laser beams, wherein the plurality of first laser beams form a plurality of light spots at a plurality of locations on the diffusion component. A projection apparatus is also provided. The illumination system and the projection apparatus provided have smaller size and longer service life.

Abstract: A projector and a wavelength conversion device thereof are provided. The wavelength conversion device includes a wavelength conversion element and a diffusion element. The wavelength conversion element includes a first substrate and at least one wavelength conversion layer. The at least one wavelength conversion layer is disposed on the first substrate and surrounding an axle center of the first substrate. The at least one wavelength conversion layer is configured to perform a conversion on a light beam. The diffusion element is connected to the first substrate of the wavelength conversion element and surrounding the axle center of the first substrate. The diffusion element is configured to allow another light beam to pass through.

Abstract: An illumination system and a projection device are provided. The illumination system includes at least one laser light source providing at least one laser beam and a polarizing rotation module including a first axle, a first driving element, and a polarizing element. The first axle has a first revolution frequency. The polarizing element is disposed on a transmission path of the laser beam. The first driving element causes the polarizing element to rotate in a temporally sequenced manner. When the polarizing element is rotated, the laser beam is transmitted to the polarizing element at a specific frequency in a plurality of first time periods. The laser beam passing through the polarizing element has different polarizing states at different times. The specific frequency and the first revolution frequency of the first axle are not exactly divisible by each other. The invention can generate an image with uniform polarizing direction.

Abstract: An illumination system including an excitation light source, a wavelength conversion module, a light splitting module and a light homogenizing element is provided. The light splitting module has a transfer region and a light splitting region, an excitation beam incident to the wavelength conversion module is converted into a wavelength converted beam by a wavelength conversion region, and is reflected by the reflection region, and the excitation beam coming from the wavelength conversion module is split into a first and a second sub-excitation beams by the light splitting region, and the first sub-excitation beam and the second sub-excitation beam form an excitation combination beam. The light homogenizing element uniforms the excitation combination beam and the wavelength converted beam, where an angle of the excitation combination beam incident to the light homogenizing element is 0.25 times larger than an angle of the wavelength converted beam incident to the light homogenizing element.

Abstract: A projection device includes a light source module for emitting an illumination beam, an optical engine module for receiving the illumination beam and forming an image beam, and a projection lens for receiving and projecting the image beam to an outside of the projection device. The optical engine module includes first and second shells coupled in a first direction, an elastic sealing member and electronic components. The shells form an accommodation space in which the electronic components are disposed. The elastic sealing member has opposite first and second surfaces. The first surface has an engagement groove in which a portion of the first shell is engaged. The second shell abuts against the second surface. Signal transmission components of the electronic components are disposed through the elastic sealing member to pass through the shells.

Abstract: An optical element adjustment module includes a mount comprising at least one first mount hole, at least one first fixing member, and at least one adjustment structure disposed on the mount and comprising an optical element, a supporting member, and a base. The optical element comprises a first surface and is held on the supporting member. The supporting member is fixed on the base, and the base includes a first base hole. The central axis of the first base hole is parallel to the first surface of the optical element. Each of the adjustment structures is rotated relative to the mount with respect to the first fixing member, so as to adjust the relative positions of the adjustment structure and the mount slightly as required.

Abstract: A light source device has a first light source assembly. The first light source assembly has plural first light source sets. The first light source sets are arranged around a first central axis. Each of the first light source sets has a first excitation light source and a first reflecting element. The first reflecting element is disposed between the first excitation light source and the first central axis to reflect a first excitation light of the corresponding first excitation light source, and thereby forming a laser beam. A projection apparatus has an illumination system, an optical engine, and a projection lens. The illumination system has a light source device and a wavelength-converting wheel. The light source device and the illumination system may improve the utilization efficiency of the condenser lens.

Abstract: A projection apparatus and an illumination system are provided. The illumination system includes an excitation light source and a light wavelength conversion module. The excitation light source is adapted to provide an excitation beam. The light wavelength conversion module includes a first phosphor wheel and a second phosphor wheel. The second phosphor wheel is disposed adjacent to the first phosphor wheel, and the first phosphor wheel and the second phosphor wheel are respectively disposed on transmission paths of a first part and a second part of the excitation beam, such that during a period that the excitation light source is turned on, the first phosphor wheel and the second phosphor wheel are both irradiated by the excitation beam. The illumination system of the invention avails improving phosphor conversion efficiency and avoiding burning the phosphor powder. The projection apparatus has good performance.