Abstract: An auto-focus projection system includes a light valve, a projecting lens, a camera module, a processing circuitry, and a focusing adjustment assembly. The light valve converts an illumination beam into an image beam, and the projection lens projects the image beam. The projection lens forms different images with respective sharpness values at different focusing positions The camera module captures the different images and converting the different images into electrical signals. The processing circuitry receives the electrical signals and compares the sharpness values to generate a control signal. The focus adjustment assembly receives the control signal and moves the projection lens according to the control signal.

Abstract: A projection apparatus including a light source, a light valve, a light uniforming device, and a first curved-surface reflection device is provided. The light source provides an illumination beam. The light valve is disposed on a transmission path of the illumination beam for converting the illumination beam into an image beam. The light valve has an active surface that substantially has a rectangular contour. The light uniforming device is disposed on the transmission path of the illumination beam and between the light source and the light valve. The first curved-surface reflection device is disposed on the transmission path of the illumination beam and between the light source and the light valve for reflecting the illumination beam to the light valve. A curvature of the first curved-surface reflection device along a first direction is not equal to a curvature of the first curved-surface reflection device along a second direction.

Abstract: A projection apparatus and a light condensing module are provided. The light condensing module condenses and deflects an incident beam. The light condensing module includes a curving incident surface, a curving outgoing surface and a reflection surface. The curving incident surface receives the incident beam. The curving outgoing surface is disposed on a transmission path of the incident beam from the curving incident surface. The reflection surface is disposed on the transmission path of the incident beam, and located between the curving incident surface and the curving outgoing surface. A ray of the incident beam propagates through the curving incident surface along the optical axis of the curving incident surface, and emits out from the curving outgoing surface along a direction inclined to the optical axis of the curving outgoing surface.

Abstract: A light module includes a first light source. The first light source includes a first light-emitting element and a first lens element. The first light-emitting element includes a first light-emitting chip for emitting a first color light beam and a wavelength conversion material located on the first light-emitting chip for transferring parts of the first color light beam to a second color light beam. The first lens element faces the first light-emitting element and is located on a transmission path of the first color light beam and a transmission path of the second color light beam, and the first lens element includes an optical filter for filtering off the first color light beam and being passed by the second color light beam.

Abstract: A projection apparatus includes a light source, a light valve, a light uniforming device, and a lens module. The light source provides an illumination beam. The light valve on a transmission path of the illumination beam converts the illumination beam into an image beam. The light valve has an active surface with a rectangular shape. The light uniforming device is between the light source and the light value. The lens module is between the light uniforming device and the light value. A refractive power of the lens module along a first direction is different from a refractive power of the lens module along a second direction. An f-number of the illumination beam along a direction parallel to a long side of the active surface of the light valve is greater than an f-number thereof along a direction parallel to a short side of the active surface of the light valve.

Abstract: A light module includes a first light source. The first light source includes a first light-emitting element and a first lens element. The first light-emitting element includes a first light-emitting chip for emitting a first light beam and a wavelength conversion material located on the first light-emitting chip for transferring parts of the first light beam to a second light beam. The first lens element faces the first light-emitting element and is located on a transmission path of the first light beam and a transmission path of the second light beam, and the first lens element includes an optical filter for filtering off the first light beam and being passed by the second light beam.

Abstract: A projection apparatus and a light condensing module are provided. The light condensing module condenses and deflects an incident beam. The light condensing module includes a curving incident surface, a curving outgoing surface and a reflection surface. The curving incident surface receives the incident beam. The curving outgoing surface is disposed on a transmission path of the incident beam from the curving incident surface. The reflection surface is disposed on the transmission path of the incident beam, and located between the curving incident surface and the curving outgoing surface. A ray of the incident beam propagates through the curving incident surface along the optical axis of the curving incident surface, and emits out from the curving outgoing surface along a direction inclined to the optical axis of the curving outgoing surface.

Abstract: An illumination system includes a chip package, a first dichroic film, a second dichroic film, and a third dichroic film. The first dichroic film, the second dichroic film, and the third dichroic film are not parallel to each other and do not cross each other. The chip package includes a first light-emitting chip capable of emitting a first light beam, a second light-emitting chip capable of emitting a second light beam, and a third light-emitting chip capable of emitting a third light beam. The first light-emitting chip, the second light-emitting chip, and the third light-emitting chip are arranged in a row. The first dichroic film reflects the first light beam and transmitting the second light beam, the second dichroic film reflects the second light beam, the first dichroic film and the second dichroic film transmit the third light beam, and the third dichroic film reflects the third light beam.

Abstract: A projection apparatus including a light source, a light valve, a light uniforming device, and a first curved-surface reflection device is provided. The light source provides an illumination beam. The light valve is disposed on a transmission path of the illumination beam for converting the illumination beam into an image beam. The light valve has an active surface that substantially has a rectangular contour. The light uniforming device is disposed on the transmission path of the illumination beam and between the light source and the light valve. The first curved-surface reflection device is disposed on the transmission path of the illumination beam and between the light source and the light valve for reflecting the illumination beam to the light valve. A curvature of the first curved-surface reflection device along a first direction is not equal to a curvature of the first curved-surface reflection device along a second direction.

Abstract: An illumination system including a first light emitting chip, a chip package, a first dichroic film, and a second dichroic film is provided. The first light emitting chip emits a first light beam. The chip package includes a second light emitting chip and a third light emitting chip. The second light emitting chip emits a second light beam. The third light emitting chip emits a third light beam. The colors of the first, second, and third light beams are different from each other. The first dichroic film is disposed in the transmission paths of the first and second light beams. The second dichroic film is disposed in the transmission paths of the first, second, and third light beams. The first and second dichroic films are not parallel to and do not intersect each other. Besides, a projection apparatus employing the illumination system and another projection apparatus are provided.

Abstract: A projection apparatus includes an illumination system, a light valve, a projection lens, and a first reflective unit. The illumination system provides an illumination light beam. The light valve is disposed on a transmission path of the illumination light beam and capable of converting the illumination light beam into an image light beam. The illumination light beam is transmitted to the light valve vertically. The projection lens is disposed on a transmission path of the image light beam. The first reflective unit disposed on the transmission path of the image light beam is located between the light valve and the projection lens. The first reflective unit is capable of reflecting the image light beam from the light valve to the projection lens. The image light beam reflected by the first reflective unit to the projection lens is perpendicular to the illumination light beam transmitted to the light valve.

Abstract: A projection apparatus includes a light source, a light valve, a light uniforming device, and a lens module. The light source provides an illumination beam. The light valve on a transmission path of the illumination beam converts the illumination beam into an image beam. The light valve has an active surface with a rectangular shape. The light uniforming device is between the light source and the light value. The lens module is between the light uniforming device and the light value. A refractive power of the lens module along a first direction is different from a refractive power of the lens module along a second direction. An f-number of the illumination beam along a direction parallel to a long side of the active surface of the light valve is greater than an f-number thereof along a direction parallel to a short side of the active surface of the light valve.

Abstract: An illumination system including at least one coherent light source, a light uniforming element, and a prism is provided. The coherent light source is capable of emitting a coherent beam. The light uniforming element is disposed on a transmission path of the coherent beam. The prism is disposed on the transmission path of the coherent beam and between the coherent light source and the light uniforming element. The prism has a light incident end and a light exit end. The light incident end has at least one incident polygonal pyramid portion protruding away from the light exit end. The prism is capable of rotating about an axis, and the axis extends from the light incident end to the light exit end. The illumination system effectively reduces the degree of the speckle phenomenon.

Abstract: An illumination system including at least one coherent light source, a light uniforming element, and a prism is provided. The coherent light source is capable of emitting a coherent beam. The light uniforming element is disposed on a transmission path of the coherent beam. The prism is disposed on the transmission path of the coherent beam and between the coherent light source and the light uniforming element. The prism has a light incident end and a light exit end. The light incident end has at least one incident polygonal pyramid portion protruding away from the light exit end. The prism is capable of rotating about an axis, and the axis extends from the light incident end to the light exit end. The illumination system effectively reduces the degree of the speckle phenomenon.

Abstract: An illumination system for providing an illumination beam to a light valve is provided. The illumination system includes a light source, a light integration rod, a color wheel, a first focusing unit and a second focusing unit. The light source is capable of generating the illumination beam, and the light integration rod is disposed on the transmission path of the illumination beam. The first focusing unit is disposed between the integration rod and the color wheel and is capable of focusing the illumination beam onto the color wheel. The second focusing unit is disposed between the color wheel and the light valve and is capable of focusing the illumination beam onto the light valve.

Abstract: An illumination system including at least one coherent light source, a light uniforming device and a lenticular sheet module is provided. The coherent light source is capable of emitting a coherent beam. The light uniforming device is disposed on a transmission path of the coherent beam. The lenticular sheet module disposed on a transmission path of the coherent beam and between the coherent light source and the light uniforming device, includes a first lenticular sheet and a second lenticular sheet. The first lenticular sheet includes a plurality of first rod-like lenticulars disposed side by side extending along a first extending direction. The second lenticular sheet disposed between the first lenticular sheet and the light uniforming device, includes a plurality of second rod-like lenticulars disposed side by side extending along a second extending direction. The first extending direction and the second extending direction make an angle greater than 0 degree.

Abstract: An optical projection system includes a light source module, a field lens, a fly-eye lens, a light valve and a projection lens. The field lens is disposed on a propagation path of a light beam, where the light beam emitted from the light source module comprises a transmission light beam passing through the field lens and a reflection light beam reflected by the field lens. The fly-eye lens is disposed on the propagation path of the light beam and between the light source module and the field lens to homogenize the light beam, where the fly-eye lens includes a plurality of lens elements arranged in an array, the reflection light beam passes through the lens element via a transmissive region of the lens element, and at least one of an opaque structure, a light-diffusing structure and a light-deflecting structure is formed on the transmissive region.

Abstract: An illumination system including at least one coherent light source, a light uniforming element, and a prism is provided. The coherent light source is capable of emitting a coherent beam. The light uniforming element is disposed on a transmission path of the coherent beam. The prism is disposed on the transmission path of the coherent beam and between the coherent light source and the light uniforming element. The prism has a light incident end and a light exit end. The light incident end has at least one incident polygonal pyramid portion protruding away from the light exit end. The prism is capable of rotating about an axis, and the axis extends from the light incident end to the light exit end. The illumination system effectively reduces the degree of the speckle phenomenon.

Abstract: An illumination system includes a chip package, a first dichroic film, a second dichroic film, and a third dichroic film. The first dichroic film, the second dichroic film, and the third dichroic film are not parallel to each other and cross one another at an identical region. The chip package includes a first light-emitting chip capable of emitting a first light beam, a second light-emitting chip capable of emitting a second light beam, and a third light-emitting chip capable of emitting a third light beam. The first light-emitting chip, the second light-emitting chip, and the third light-emitting chip are arranged to form a delta arrangement. The first dichroic film is capable of reflecting the first light beam, and the second dichroic film is capable of reflecting the second light beam. The first dichroic film is capable of transmitting the third light beam, and the third dichroic film is capable of reflecting the third light beam.

Abstract: An illumination system includes a chip package, a first dichroic film, a second dichroic film, and a third dichroic film. The first dichroic film, the second dichroic film, and the third dichroic film are not parallel to each other and do not cross each other. The chip package includes a first light-emitting chip capable of emitting a first light beam, a second light-emitting chip capable of emitting a second light beam, and a third light-emitting chip capable of emitting a third light beam. The first light-emitting chip, the second light-emitting chip, and the third light-emitting chip are arranged in a row. The first dichroic film reflects the first light beam and transmitting the second light beam, the second dichroic film reflects the second light beam, the first dichroic film and the second dichroic film transmit the third light beam, and the third dichroic film reflects the third light beam.