Abstract: A head mount personal computer (HMPC) and an interactive system using the same are provided. The provided HMPC includes a microprocessing unit, an output unit and an image capture unit with a distance detection function (ICWDD). The microprocessing unit is served as an operation core of the HMPC. The output unit is coupled to and controlled by the microprocessing unit, and configured to project an optical image onto a space. The ICWDD is coupled to and controlled by the microprocessing unit, and configured to capture operation gestures on the projected optical image from a user wearing the HMPC, such that the microprocessing unit correspondingly controls operations of the HMPC in response to the operation gestures on the projected optical image from the user.

Abstract: An illumination device including a base, a heat dissipation member, at least one flexible printed circuit board (FPC), and a plurality of light-emitting elements is provided. The heat dissipation member disposed on the base has a central axis, a plurality of holding curvy surfaces and a plurality of heat dissipation channels extending along the central axis, wherein the holding curvy surfaces and the heat dissipation channels are staggered and arranged about the central axis, and each of the holding curvy surfaces radially extends along the central axis. The flexible printed circuit board is disposed on the holding curvy surfaces. The light-emitting elements are disposed on the flexible printed circuit board. An assembling method of the illumination device is also provided.

Abstract: A light action element module, a lighting device, and a lighting system are provided. The light action element module includes N×K light action elements, wherein adjacent light action elements are connected with each other. A detachable section is disposed between every two connecting light action elements. The light action elements are for separating into a plurality of combinations of the light action elements along at least a part of the detachable sections, or the light action elements are adapted to form a combination of the light action elements without separating, so as to produce different piecing-together manners, wherein N and K are positive integers, and N is greater than or equal to 2.

Abstract: An optical scanning-type touch apparatus and an operation method thereof are provided. The optical scanning-type touch apparatus includes a touch area, a light scanning module, an imaging module and a calculating unit. The light scanning module is disposed at one corner of the touch area to emit a scanning light for scanning the touch area. The imaging module is disposed at another corner of the touch area adjacent the light scanning module to obtain a first angle between the scattering light and a edge of the touch area, wherein the edge of the touch area is between the light scanning module and the imaging module. The calculating unit receives the first angle, a second angle and a distance between the light scanning module and the imaging module to calculate a position of the object on the touch area.

Abstract: An image screen includes a transparent substrate, a metal film, and an optical reflective stack layer. The metal film is disposed on a first surface of the transparent substrate, having a thickness and a set of material characteristic constants being predetermined. The optical reflective stack layer is disposed over the metal layer. The metal film and the optical reflective stack layer function together to selectively reflect a light with a portion of wavelength. In addition, according to the need, a diffusion micro-structure layer can be disposed on a second surface of the transparent substrate. Further for example, another reflective layer or optical absorbing layer can be further disposed on another surface of the optical reflective stack layer. The reflective layer can be, for example, a metal film.

Abstract: A polarized light illumination device is described, which includes a light source, a polarizer, a reflector, and a polarized light converter. The light source generates light. The reflector is used for reflecting light generated by the light source towards the polarizer. The polarizer allows a first polarized light to pass through, and reflects a second polarized light. The polarized light converter reflects the light irradiated on the polarized light converter and performs a polarization conversion. A plane where the polarized light converter is located is substantially perpendicular to the polarizer.

Abstract: A display system 1 is composed of a ghost image reducing device 100 and an image device 10. The ghost image reducing device 100 comprises an image reflecting element 110 and a polarizing element 120. The image reflecting element 110 includes a substrate 112 and a phase modulating element 114 which is adjacent to the substrate 112 and has a reflecting surface 114a. The image device 10 generates a polarized image light P1 which is received by the reflecting surface 114a. Then, a portion of the polarized image light P1 is reflected by the reflecting surface 114a for producing a first reflecting polarized image light P2, another portion of the polarized light P1 is projected into the phase modulating element 114 and reflected by the substrate 112 for producing a second reflecting polarized image light S2 whose polarizing direction is different from that of the first reflecting polarized image light P2.

Abstract: An optical deflector includes a substrate, an electrode layer on the substrate, an insulating layer at a predetermined peripheral region on the electrode layer, exposing the central region of the electrode layer. First electrode sandwiched wall is on the insulating layer. Second electrode sandwiched wall is on the insulating layer corresponding to the first electrode sandwiched wall. A pair of insulating walls is between the first electrode sandwiched wall and the second electrode sandwiched wall in enclosing to form an inner space. An outer wall encloses the pair of insulating layers, the first and the second electrode sandwiched walls at outside. A cap layer covers on the outer wall. A first liquid is filled into the inner space in contact with the electrode layer. A second liquid is filled into the inner spacer without solving to each other and forms a liquid interface.

Abstract: An image-projection system includes a light source, a light guide, and an image-projection module. The light source is configured to provide planar illumination. The light guide has a first end and a second end, with the first end being coupled with the light source to receive the planar illumination and the second end being configured to provide a transmitted planar illumination. The light guide may have an internal structure providing a reflective surface for reflecting the planar illumination received from the first end. The image-projection module may be coupled with the second end of the light guide and configured to receive an image signal input and project, in response to the image signal, an image via the transmitted planar illumination.

Abstract: An illumination system includes at least one light source capable of generating light of at least three wavelength sections; at least three integrator modules for receiving the light of each wavelength section and performing a uniformization process on the light of each wavelength section; at least three first lens modules for receiving the after the uniformization process light and converging angles of the light into a predetermined range; a light coupling module for receiving the converged light and performing a light-coupling process on the light; and a polarization conversion module for receiving the coupled light and performing a polarization conversion process on the light.

Abstract: A transmitting-type liquid crystal display projection system including a planar light source which emits planar white beam or planar R/G/B beams in succession is provided. A first polarization filter receives the planar light source and polarizes the same to be in a first polarization state. A liquid-crystal light valve receives the polarized planar light source, and converts the first polarization state to a second polarization state having a corresponding gray level. A second polarization filter receives a light output from the liquid crystal light valve to produce a second polarization light beam. A projection unit projects the second polarization light beam onto a display plane. Using the same planar light source, a polarization beam splitting (PBS) device with a refection-type liquid crystal light valve can be used to achieve the reflection-type projection system.

Abstract: A polarized light illumination device is described, which includes a light source, a polarizer, a reflector, and a polarized light converter. The light source generates light. The reflector is used for reflecting light generated by the light source towards the polarizer. The polarizer allows a first polarized light to pass through, and reflects a second polarized light. The polarized light converter reflects the light irradiated on the polarized light converter and performs a polarization conversion. A plane where the polarized light converter is located is substantially perpendicular to the polarizer.

Abstract: An image screen includes a transparent substrate, a metal film, and an optical reflective stack layer. The metal film is disposed on a first surface of the transparent substrate, having a thickness and a set of material characteristic constants being predetermined. The optical reflective stack layer is disposed over the metal layer. The metal film and the optical reflective stack layer function together to selectively reflect a light with a portion of wavelength. In addition, according to the need, a diffusion micro-structure layer can be disposed on a second surface of the transparent substrate. Further for example, another reflective layer or optical absorbing layer can be further disposed on another surface of the optical reflective stack layer. The reflective layer can be, for example, a metal film.

Abstract: A transmitting-type liquid crystal display projection system including a planar light source which emits planar white beam or planar R/G/B beams in succession is provided. A first polarization filter receives the planar light source and polarizes the same to be in a first polarization state. A liquid-crystal light valve receives the polarized planar light source, and converts the first polarization state to a second polarization state having a corresponding gray level. A second polarization filter receives a light output from the liquid crystal light valve to produce a second polarization light beam. A projection unit projects the second polarization light beam onto a display plane. Using the same planar light source, a polarization beam splitting (PBS) device with a refection-type liquid crystal light valve can be used to achieve the reflection-type projection system.

Abstract: A light-beam generator and a projecting system having the light-beam generator are proposed in the present invention. The light-beam generator includes an optical element and a light-emitting diode, wherein the optical element further includes a non-spherical reflecting curved surface which at least has a focus. Also, the light-emitting diode is located at the focus of the optical element for emitting light to the reflecting curved surface to form a light beam which is guided in a specific direction. By such arrangement, an output efficiency of light beams can be improved and a heat dissipation requirement can be reduced. Additionally, the light-beam generator proposed in the present invention can be applied to a projecting system having illuminant with specific polarized directions, so as to eliminate various prior-art drawbacks.

Abstract: An illuminating device reusing polarized light uses an elliptical mirror, a cylindrical optical channel tube, a polarized light converter and at least two lenses to evenly distribute light and convert polarized light effectively. The incident end of the cylindrical optical channel tube is located at one focal point of the elliptical mirror. The emerging light from the cylindrical optical channel tube enters into the polarized light converter to form an image on the illuminated display panel.

Abstract: An illuminating device reusing polarized light uses an elliptic mirror, a cylindrical optical channel tube, a polarized light converter and at least two lenses to evenly distribute light and convert polarized light effectively. The incident end of the cylindrical optical channel tube is located at one focal point of the elliptic mirror. The emerging light from the cylindrical optical channel tube enters into the polarized light converter to form a image on the illuminated display panel.

Abstract: An LCD projector of two-plate type is disclosed. The LCD projector comprises a light source, a color valve, a dichroic mirror, a polarization rotating device, a polarization beam splitter, a first reflective LCD panel, a second LCD panel and a projection lens. The first reflective LCD panel is used to modulate the green light with the green component of the image signal. The red light and the blue light are modulated in a time field sequential manner by the color valve and the second reflective LCD panel.

Abstract: A polarization converter for unpolarized light. The polarization converter comprises a prism, a wedge, a set of lens arrays, a first reflecting plane, and a second reflecting plane. The wedge comprises a tilt plane. The tilt plane is coated with multi-layer polarization dichronic thin film. The set of lens arrays comprises a light distributor and a light integrator. The tilt plane of the wedge is glued on the first reflecting plane. A second reflecting plane is the unglued plane of the wedge. When a light beam is incident towards the incident plane, the first reflecting plane splits and polarizes the light beam into a first type polarized and a second type polarized lights. Through the multi-layer polarization dichronic thin film, about 99% of the first type polarized light is reflected, and about 99% of the second type polarized light is transmitted and incident on the second reflecting plane.