Abstract: A stereoscopic scanning device is applied by a stereoscopic scanning method and includes a projection module and an imaging module. The projection module includes a pattern creator, a visible light source and an invisible light source. The pattern creator and the visible light source create a structured light pattern projected onto a target object. The invisible light source emits an invisible light beam to the target object for generating an excitation light beam. The imaging module is disposed adjacent to the projection module and includes a light splitting component, a first optical sensor and a second optical sensor. The light splitting component respectively reflects the structured light pattern and the excitation light beam and allows passing of the structured light pattern and the excitation light beam. The first optical sensor receives light reflected from the light splitting component. The second optical sensor receives light passing through the light splitting component.

Abstract: A stereoscopic scanning device is applied by a stereoscopic scanning method and includes a projection module and an imaging module. The projection module emits a visible beam to a structural light generator to project a structural light pattern onto a target object, and further emits an invisible beam to the target object for generating a first excitation beam and/or a second excitation beam. The imaging module includes an optical sensor and a color filter. The optical sensor receives the structural light pattern and the excitation beams. The color filter has a first filtering region and a second filtering region. The first filtering region allows penetration of the visible beam and the first excitation beam, and blocks transmission of the second excitation beam. The second filtering region allows penetration of the visible beam and the second excitation beam, and blocks transmission of the firs excitation beam.

Abstract: A three-dimensional contour scanning device including an image sensing element, a light source and a single polarity element is provided. The light source is used for emitting a projection light to a to-be-scanned object through a projection optical path. The projection light reflected from the to-be-scanned object becomes an imaging light further reflected to the image sensing element through an image-formed optical path. The single polarity element is disposed on the projection optical path and the image-formed optical path.

Abstract: An electronic device casing can be used in a projector and includes a first casing member and a second casing member. The first casing member includes a first side wall. The first casing member and the second casing member are engaged with each other to form an internal accommodating space. The second casing member includes a second side wall. The first side wall and the second side wall are oppositely disposed to form a narrow passage therebetween. The internal accommodating space is connected to an external space of the electronic device casing through the narrow passage. The narrow passage has a non-straight traveling path. Furthermore, the electronic device can includes an air flow bypass passage near the narrow passage.

Abstract: A projector includes a color wheel module and an optical engine. The color wheel module includes a rotation device, a mount, a color wheel, and an optical sensor. The color wheel is fixed on a rotary part of the rotation device. The rotation device and the optical sensor are fixed on the mount. The mount has an anti-dust structure includes a curved surface that is opposite to a rotary surface of the rotary part and extends in a rotation direction of the rotary part. The curved surface and the optical sensor are arranged sequentially in the rotation direction. Either by shortening a distance between the curved surface and the rotary surface or by a guiding slot that is disposed beside or lower than the curved surface, dust deposited on the optical sensor can be reduced effectively.

Abstract: An electronic device casing can be used in a projector and includes a first casing member and a second casing member. The first casing member includes a first side wall. The first casing member and the second casing member are engaged with each other to form an internal accommodating space. The second casing member includes a second side wall. The first side wall and the second side wall are oppositely disposed to form a narrow passage therebetween. The internal accommodating space is connected to an external space of the electronic device casing through the narrow passage. The narrow passage has a non-straight traveling path. Furthermore, the electronic device can includes an air flow bypass passage near the narrow passage.

Abstract: A projector includes a holding casing having a hole structure, a projection lens movably disposed through the hole structure, a containing casing detachably fixed to the holding casing for forming a containing space, an image projection module disposed in the containing space, and a flexible washer. A first engaging structure is formed on an external surface of the projection lens. The flexible washer jackets the projection lens and has first and second ring structures and a connection ring structure formed therebetween. The first engaging structure is engaged with the second engaging structure of the first ring structure for positioning the first ring structure on the projection lens. The second ring structure is clamped between the holding casing and the containing casing for sealing the containing space cooperatively with the connection ring structure and the first ring structure when the containing casing is fixed to the holding casing.

Abstract: A three-dimensional contour scanning device including an image sensing element, a light source and a single polarity element is provided. The light source is used for emitting a projection light to a to-be-scanned object through a projection optical path. The projection light reflected from the to-be-scanned object becomes an imaging light further reflected to the image sensing element through an image-formed optical path. The single polarity element is disposed on the projection optical path and the image-formed optical path.

Abstract: A power board and ballast module includes a housing, a power board, a ballast and an electrical connector. The power board is disposed in the housing. The ballast is disposed in the housing and electrically connected to the power board. The electrical connector is disposed in the housing and exposed out of the housing, wherein the power board and the ballast are electrically connected to the electrical connector respectively. Projectors using the power board and ballast module are also provided.

Abstract: A projector includes a projector body having a light-permissive aperture, a plurality of lens modules, a lens disassembly sensing module, a light-emitting module and a control module. The lens modules are individually provided for an assembly to the light-permissive aperture. The lens disassembly sensing module is disposed in the projector body and corresponding to the light-permissive aperture. The light-emitting module is disposed in the projector body and configured to emit lights toward the light-permissive aperture. The control module is signally connected to the lens disassembly sensing module and the light-emitting module. The control module is configured to sense, through the lens disassembly sensing module, whether any one of lens modules is being disassembled from the light-permissive aperture and modulate a lighting intensity of the light-emitting module when a lens module being disassembled from the light-permissive aperture is sensed.

Abstract: A touch projection system includes a light source device, a micromirror device, and an image-capturing device. The micromirror device can provide three reflection directions. The micromirror device can selectively reflect projection light emitted by the light source device in one of the reflection directions to project the reflected projection light onto a screen to form an image. The micromirror device also can reflect image light from the screen in another one of the reflection directions. Further, the micromirror device can reflect the image light from the screen in the other one of the reflection directions, which has a larger deflection angle, to be received by the image-capturing device, for example for determining a touch operation performed on the screen. Thereby, the limitation of structural interference by other components to the image-capturing device is reduced, so that the touch projection system can be assembled in a compact configuration.

Abstract: A power board and ballast module includes a housing, a power board, a ballast and an electrical connector. The power board is disposed in the housing. The ballast is disposed in the housing and electrically connected to the power board. The electrical connector is disposed in the housing and exposed out of the housing, wherein the power board and the ballast are electrically connected to the electrical connector respectively. Projectors using the power board and ballast module are also provided.

Abstract: A touch projection system includes a screen, an image-capturing device, a micromirror device, and a TIR prism disposed in front of the micromirror device. The TIR prism includes an optical path compensation structure or a hollowed channel, so that an image light from the screen, traveling through the TIR prism to be reflected by the micromirror device, can travel through the optical path compensation structure or the hollowed channel to avoid a probable optical path difference on the image light due to traveling through the TIR prism. Thereby, the invention can solve that a distortion may be induced in a touch image formed by the image-capturing device receiving the image light reflected by the micromirror device.

Abstract: A projector includes a color wheel module and an optical engine. The color wheel module includes a rotation device, a mount, a color wheel, and an optical sensor. The color wheel is fixed on a rotary part of the rotation device. The rotation device and the optical sensor are fixed on the mount. The mount has an anti-dust structure includes a curved surface that is opposite to a rotary surface of the rotary part and extends in a rotation direction of the rotary part. The curved surface and the optical sensor are arranged sequentially in the rotation direction. Either by shortening a distance between the curved surface and the rotary surface or by a guiding slot that is disposed beside or lower than the curved surface, dust deposited on the optical sensor can be reduced effectively.

Abstract: A touch projection system includes a light source device, a micromirror device, and an image-capturing device. The micromirror device can provide three reflection directions. The micromirror device can selectively reflect projection light emitted by the light source device in one of the reflection directions to project the reflected projection light onto a screen to form an image. The micromirror device also can reflect image light from the screen in another one of the reflection directions. Further, the micromirror device can reflect the image light from the screen in the other one of the reflection directions, which has a larger deflection angle, to be received by the image-capturing device, for example for determining a touch operation performed on the screen. Thereby, the limitation of structural interference by other components to the image-capturing device is reduced, so that the touch projection system can be assembled in a compact configuration.

Abstract: A touch projection system includes a screen, an image-capturing device, a micromirror device, and a TIR prism disposed in front of the micromirror device. The TIR prism includes an optical path compensation structure or a hollowed channel, so that an image light from the screen, traveling through the TIR prism to be reflected by the micromirror device, can travel through the optical path compensation structure or the hollowed channel to avoid a probable optical path difference on the image light due to traveling through the TIR prism. Thereby, the invention can solve that a distortion may be induced in a touch image formed by the image-capturing device receiving the image light reflected by the micromirror device.

Abstract: A light source apparatus for an optical projecting system is disclosed. A light source is disposed on a first optical axis. A second optical axis is perpendicular to the first optical axis. A plurality of light-guiding devices are respectively disposed on the first optical axis, the second optical axis, the first light source or the second light source, for guiding the light emitted by the light sources to the identical direction parallel to the second optical axis.

Abstract: An adjustable lens module applied to an image projector is provided. The lens is positioned in a lens barrel situated within a lens housing mounted on a frame. The adjustable lens module includes a base plate, and a first, a second and a third positioning means. The base plate connected to the lens barrel is attached to the lens housing and mounted on the frame. The first, second and third positioning means are respectively positioned at the first, second and third corners of the base plate. The first and second corners are arranged diagonally on the base plate. At least the first and second positioning means are adjustably secured at the first and second corners respectively. By adjusting the relative position between the base plate and the first, second and third position means, a central axis of the lens is substantially parallel to or overlapped with an optical axis.

Abstract: A lamp module mounted on a housing is provided. The lamp module includes a lamp and a lamp sleeve. The plane perpendicular to an optical of the lamp has an x-axis direction and a y-axis direction mutually perpendicular to each other. The lamp is mounted within the lamp sleeve, and a positioning piece is formed at one end of the lamp sleeve for mounting the lamp sleeve on the housing. The positioning piece at least includes a first surface and a second surface respectively parallel to the x-axis direction and the y-axis direction. At least one of the first surface and the second surface is equipped with an adjustable apparatus for adjusting the alignment of the lamp by moving the positioning piece along the direction(s) of the x-axis or/and the y-axis. The adjustable apparatus comprises a positioning component, a fastener and an elastic component.

Abstract: A projector includes illumination optics for providing light beams, a light modulating apparatus for receiving and modulating the light beams provided by the illumination optics, a projection lens for projecting an image of the light beams received from the light modulating apparatus, a first adjusting device for adjusting a position of the illumination optics and adjusting an angle of incidence of the light beams emitted onto the light modulating apparatus, and a second adjusting device for adjusting a position of the projection lens in response to the adjustment of the position of the illumination optics for creating an offset of a position of the image projected by the projection lens.