Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.

Abstract: A polarization conversion system separates light from an unpolarized image source into a first state of polarization (SOP) and an orthogonal second SOP, and directs the polarized light on first and second light paths. The SOP of light on only one of the light paths is transformed to an orthogonal state such that both light paths have the same SOP. A polarization modulator temporally modulates the light on the first and second light paths to first and second output states of polarization. First and second projection lenses direct light on the first and second light paths toward a projection screen to from substantially overlapping polarization encoded images. The polarization modulator may be located before or after the projection lenses. The polarization-encoded images may be viewed using eyewear with appropriate polarization filters.

Abstract: A projection video display apparatus includes a video input unit, a light source, a display element, a projection optical system, and a variable light adjusting function which changes the amount of light incident on the display element. Display modes using the variable light adjusting function are prepared, and one display mode of the display modes can be selected from a menu screen. Further, the display modes of the display video using the variable light adjusting function includes: a first display mode where the input video is displayed while changing a light adjusting amount in accordance with light adjusting control information, which is input from external equipment and is capable of controlling the variable light adjusting function in unit of frame of a projected video; and a second display mode where the input video is displayed while changing a light adjusting amount in accordance with the input video.

Abstract: In one aspect, a light source for a projection display includes: three laser light sources, a beam combining lens, and a phosphor wheel coated with phosphor powders. Each of the first and second laser light sources outputs a first light beam and a second light beams respectively, which are respectively reflected by the beam combining lens. The third laser light source outputs a third light beam, which is projected onto the phosphor powders of the phosphor wheel. The phosphor wheel is excited by the third light beam to output a fourth light beam such that the fourth light beam is projected onto the beam combining lens. The beam combining lens reflects the first and second light beams, and transmits the fourth light beam therethrough.

Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.

Abstract: A optical projection device that projects an image with excellent image quality while achieving miniaturization is provided. The optical projection device includes a first lens frame holding a first lens group L1 and including a cam pin, a guide barrel including a straight movement groove, a cam barrel including a cam groove, and an urging portion that urges the first lens frame in a direction intersecting with the direction along an optical axis. The cam pin is formed at a position spaced apart from a center of gravity including the first lens frame and members attached to the first lens frame in the direction along the optical axis Ax and the urging portion urges the first lens frame at a position closer than the cam pin with respect to the center of gravity in the direction along the optical axis.

Abstract: A light source device includes a light source section that emits laser beam, a member reducing light quantity unevenness of the laser beam, a diffusion member that is provided in a traveling optical path of the laser beam between the light source section and the member reducing light quantity unevenness and diffuses the laser beam, a detection element that detects a physical characteristic of the diffusion member and outputs a state detecting signal, and an abnormal state determiner that determines an abnormal state of the diffusion member based on the state detecting signal.

Abstract: A projective optical system comprises: a lens optical system including lenses; and a transmissive optical element having an anamorphic surface and being provided in an optical path between the lens optical system and a projected surface, wherein the transmissive optical element has a curvature with respect to a direction corresponding to a long side of a display screen of the image display element, and on a cross-sectional surface being perpendicular to the long side of the display screen, and with respect to light being emitted from the lens optical system and being incident to the transmissive optical element, a light intensity of a first light flux being incident to the transmissive optical element at a first incident angle is lower than a light intensity of a second light flux being incident to the transmissive optical element at a second incident angle being larger than the first incident angle.

Abstract: A projector includes: an exterior housing configuring an exterior; a projection optical device which projects an image toward a projection surface; and a plurality of operation buttons which, being disposed in such a way as to be exposed to the outside of the exterior housing, an image opening for allowing the image projected from the projection optical device to pass through is formed in one sidewall, among sidewalls configuring the exterior housing, which intersects in a vertical direction, the projection optical device includes a reflecting mirror which reflects the image, and projects it through the image opening, and the plurality of operation buttons are disposed on a side of the one sidewall farther from the projection surface than the image opening.

Abstract: A projection lens included in a projector using laser beams as a light source is provided, the laser beams including as the light source, first blue laser light beams, second blue laser beams, first green laser beams, second green laser beams, first red laser beams, and second red laser beams, which are different in wavelength range. The projection lens has a relative maximum value of a transmittance on an optical axis between a wavelength not shorter than 645 nm and a wavelength not longer than 680 nm.

Abstract: An image display apparatus including a light source; a light source control unit configured to control electric power to be supplied to the light source; a light source cooling unit configured to cool the light source; a cooling control unit configured to control the light source cooling unit; an image display device; an illumination optical system configured to introduce light from the light source to the image display device, and a projecting optical system configured to project light modulated by the image display device. When the light source control unit receives a turn-off command, the light source control unit first lowers electric power to be supplied to the light source to a predetermined electric power lower than normal electric power to be supplied when the lamp is on, and then blocks the supply of the electric power to the light source, thereby turning the light source off.

Abstract: One container system includes a transparent display, a projector for providing image data on the display, and a floor defining part of a watertight cavity. The display is non-perpendicularly angled from horizontal and has proximal and distal ends. And a closure device is provided for use with a watertight container. The closure device is configured to selectively seal an opening in the watertight container and includes coupling structure (a plug, a flange, and/or threading) for selectively coupling the closure device to the watertight container to seal the opening. The closure device further includes non-transitory computer memory, at least one sensor, and a processor in data communication with the memory and the at least one sensor.

Abstract: A projection display apparatus of the present disclosure includes a solid state light source that emits blue light in a first wavelength range; a wheel having a light-emitting body that emits emission light in a second wavelength range closer to the longer wavelengths than the first wavelength range is and adjacent to the first wavelength range, in response to irradiation with the blue light; a light uniformizing element that uniformizes the blue light and the emission light; a light modulation element that modulates light uniformized by the light uniformizing element; and a projection unit that projects the light modulated by the light modulation element. An end of the light-emitting body that the blue light enters has a dichroic coating that partly reflects the blue light and transmits emission light.

Abstract: An image projection system for a drum, including a batter drum head and a resonant drum head. The image projection system includes a projector support configured to support an image projector providing an image, a mirror; and a mirror support. The mirror support is configured to support the mirror, wherein the projector support and the mirror support are adjustably coupled to each other. An image is projected toward the mirror and reflected toward an interior surface of the resonant drum. The projected image is configured to provide an image viewable on an exterior surface of the resonant drumhead.

Abstract: A projection device includes: a detection unit configured to detect a specific object; a projection unit configured to project a first projection image; a drive unit configured to change a direction of the projection unit so as to change the projection position of the first projection image; a controller configured to control the drive unit such that the first projection image is projected while following the motion of the detected specific object; and a communication unit configured to receive information of a second projection image projected by another projection device. The controller acquires information relating to a position of the second projection image through the communication unit, and controls a projection method of the first projection image based on the positions of the first projection image and the second projection image such that the first projection image and the second projection image are not overlapped with each other when they are projected.

Abstract: A projection apparatus includes a projection unit, a base and a pivoting member. The projection unit includes a light source, a light valve and a lens. The light source provides an illumination beam, the light valve converts the illumination beam into an image beam, and the lens projects the image beam. The base is connected to the projection unit and has at least one first stopping portion. The pivoting member is pivoted to the base and has at least one second stopping portion. The pivoting member is adapted to connect to an external power supply device, the base and the pivoting member are adapted to relatively rotate so as to adjust an angle of the projection image.

Abstract: A light splitting module includes a first light source emitting first and second primary color lights, a second light source emitting a third primary color light, a color wheel and a modulator. The color wheel is aligned with the first and second light sources for splitting lights of the first and second light sources into image forming lights. The color wheel has first and second color sections and a transparent section. The first color section allows the first and third primary color lights to pass through. The second color section allows the second and third primary color lights to pass through. The modulator is coupled to the first and second light sources and the color wheel for modulating an incidence time of the first light source on the first color section to adjust an output ratio of the first primary color light in the image forming lights.

Abstract: A light source system and a projection system, comprising a light source; a switching system switching light emitted by the light source into at least two light beams having a preset proportion in the manner of time division or light intensity division; a color wheel assembly located in a transmission light path of each light beam of the at least two light beams, with the color wheel assembly generating light having different colors and a preset proportion under the irradiation of each light beam of the at least two light beams, and light of different colors being able to synthesize a projection image after being modulated by a light modulation system, wherein the switching system can adjust the proportion of the at least two light beams according to the parameters of the projection image, so as to adjust the proportion of the light of different colors.

Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.

Abstract: The present disclosure relates to the field of optical and projecting technology, and particularly to a DMD assembly, DLP optical engine and DLP projection device.