74results about "Projectors" patented technology

A projection apparatus using a spatial light modulator (SLM), comprising the following: at least one variable light source, at least one spatial light modulator for modulating the illumination light emitted from the variable light source in accordance with the modulation state of arrayed pixel elements, a variable light source controller for controlling modulation of the variable light source, and a spatial light modulator controller for controlling modulation of each pixel element of the spatial light modulator, wherein the variable light source controller controls the variable light source so as to reduce the period in which the modulation states of the pixel element are in transition on a display image.

An image stabilizer comprising a lens module (101) for holding a lens and an imaging element, an inner frame (11) for supporting the lens module (101) rotatably, and a driving means for rotating the lens module (101) with respect to the inner frame (11) wherein the driving means includes a bimorph (14). This image stabilizer enables to reduce the overall size and thickness of an imaging device.

A three-dimensional observation apparatus includes a pair of image projection means, an image display means, a position detecting means for detecting movements of an observer of images displayed by the image display means, and a driving means for tracking movements of the observer and for moving the image display means based on changes of signals that are output from the position detecting means. The pair of image projection means and the image display means are configured such that the pair of image projection means projects a right eye image and a left eye image, and the image display means presents these images to the right eye and left eye, respectively, of an observer. A diffusing means may be provided to enlarge the exit pupils of the three-dimensional observation apparatus.

The invention provides a mixed-light-source liquid-crystal projection light engine system. The portable liquid-crystal projection light engine system is composed of a light source module, a polarized light management module, an image signal module and a projection lens, wherein the light source module consists of a high-brightness laser, an incoherent LED (Light-Emitting Diode) solid light source, a fluorescent device and the like. The output brightness of the projection system is greatly increased, the light source module is safe and environmentally friendly, and projected images have bright color and clear quality. The polarized light management module consists of a color-combining prism, a polarization beam splitter (PBS), a polarization color-combining device and the like, and different polarization states of three-primary-color mixed light are integrated into the same polarized light to be emitted to the image signal module. The image signal module is a monolithic reflection type liquid crystal light modulation device, and image signals are loaded to the three-primary-color polarized light in sequence according to the image signals corresponding to primary colors. The projection lens is used for projecting the light carrying the image signals onto a screen.

A portable screen assembly which is easily assembled and highly compact when disassembled is provided. The assembly includes a collapsible base having at least three leg members and a central support pole. The assembly includes top and bottom frame members in parallel relation supported via the central support pole supporting a screen. The screen is held in place with the frame members via flaps, sleeves, or hooks and eyelets, and is completely removable and preferably wrinkle resistant. Side supports are optionally included to provide additional support for the top and bottom frame members. The frame members and side supports are optionally telescoping members or frictionally fitting or threaded separable members. The top portion of the central support pole preferably includes a top cap which is part of a mounting mechanism for mounting the top frame member. In the preferred embodiment, the mounting mechanism allows for keystoning of the screen.

An image display device includes: a light source that emits a beam having a spreading angle in a first direction and a spreading angle in a second direction, which is smaller than the spreading angle in the first direction, in a direction perpendicular to the first direction; an afocal optical system member that has a focal point and changes the beam emitted by the light source into a parallel beam; an anisotropic diffusion plate that is arranged at the focal point and that widens at least the spreading angle in the second direction; a vibration unit that vibrates the anisotropic diffusion plate; a fly-eye lens array on which the parallel beam emitted from the afocal optical system member becomes incident; an image display element that modulates the beam that has passed through the fly-eye lens array into image display light.

A light source device includes a first light source that emits light of a first polarization, and a second light source that emits light of a second polarization whose polarization direction is different from the light of the first polarization by 90 degrees. A combined wavelength band of the light of the first polarization and the light of the second polarization is a first wavelength band. A third light source emits light of a third polarization and of a wavelength band which is different from the first wavelength band, and a fourth light source emits light of a fourth polarization whose polarization direction is different from the light of the third polarization by 90 degrees. A combined wavelength band of the light of the third polarization and the light of the fourth polarization is a second wavelength band which is different from the first wavelength band. A reflecting element reflects the light of the first polarization. A first selective transmission element transmits the light of the first polarization and reflects the light of the second polarization based on the polarization direction of the light. A second selective transmission element transmits combined light of the light of the first polarization and the light of the second polarization, and reflects the light of the third polarization based on the wavelength band of the light. A third selective transmission element transmits the combined light of the light of the first polarization and the light of the second polarization based on the polarization of the wavelength band, transmits the light of the third polarization and reflects the light of the fourth polarization based on the polarization direction of the light. The light of the first polarization, the light of the second polarization and the light of the third polarization passing through the third selective transmission element, and the light of the fourth polarization reflected by the third selective transmission element proceed in the same direction.

The invention discloses a light source system and a projector. The light source system comprises a wavelength conversion apparatus, a filtering apparatus and a dodging apparatus. The wavelength conversion apparatus comprises at least two fluorescent areas, wherein different fluorescent areas are provided with different wavelength conversion materials which generate exited light with different wavelength coverage areas; the filtering apparatus is provided with N light processing diaphragms which are successively arranged in the emergent light path of the excited light, wherein a one-to-one correspondence is formed between the light processing diaphragms and the fluorescent areas in the wavelength conversion apparatus; each light processing diaphragm reflects the excited light generated by the fluorescent area in the wavelength conversion apparatus corresponding to the light processing diaphragm to the dodging apparatus, wherein a minimum N is the number of the fluorescent areas of the wavelength conversion apparatus; the light processing diaphragms are curved surface diaphragms. According to the invention, the problem of greater space occupation caused by the loosened structure of a light source system of the prior art is solved.

A method and apparatus for projecting an image of a patient to intersect a display screen which is nonperpendicular to an adjacent portion of an optical path and adjacent a sterile operative field. A video projector system and accompanying optics impart at least one of a tilted focal plane or depth of focus to the projected image. The optical path of the projected image is located adjacent the surgical field. An initially sterile display screen is located in the optical path adjacent the sterile field so that a normal to the screen is noncoincident with the optical path and the projected image on the screen is of constant focus across the screen. The initially sterile display screen may be degradable upon cleaning and resterilization so that a new screen must be used with each procedure, thus insuring the optical quality and sterility of the screen. The display screen may be supported adjacent the surgical field by an articulated rod assembly. The rod assembly may have an upper rod shaped like a "dog leg" for providing easy access by the surgical team for rotating and moving the system up and down. A lower rod of the rod assembly may be connected to the upper rod with a universal joint for adjusting screen location and quickly moving the display screen out of the surgical field.

The invention relates to a luminous device, a cooling method thereof and a projector, wherein the luminous device comprises a light source, a detection unit, a cooling unit and a control unit, wherein the detection unit is connected to the light source and used for detecting current value and voltage value of the light source; the cooling unit is arranged close to the light source and used for cooling the light source; and the control unit is arranged between the detection unit and the cooling unit, and adjusts the cooling unit according to the current value and the voltage value. The invention can effectively reduce the response time and noise of the cooling unit, and avoid the damage to light sources with high heat value in the luminous device.

A digital image-capturing device includes an outer lens barrel, an image sensor disposed in the outer lens barrel, an inner lens barrel mounted in the outer lens barrel, and a lens module mounted in the inner lens barrel. The outer lens barrel has a barrel coupling segment formed with an internal screw thread, and a barrel guiding segment. The inner lens barrel has a barrel engaging segment formed with an external screw thread to engage threadedly the internal screw thread of the barrel coupling segment, and a barrel sliding segment in sliding and rotatable contact with the barrel guiding segment. When the inner lens barrel is inserted into the outer lens barrel, the barrel guiding segment can guide the barrel sliding segment to prevent the inner lens barrel from wobbling and to maintain optical axis alignment, thereby ensuring image-capturing quality of the device.

A light source device includes a plurality of light emitting devices connected in series, an open-circuit failure detecting section, a failure detection and maintenance section, and a short-circuiting section connected in parallel to at least one light emitting device among the plurality of light emitting devices. The open-circuit failure detecting section detects an open-circuit failure of the light emitting device connected in parallel. The failure detection and maintenance section shifts to, when the open-circuit failure detecting section detects the open-circuit failure, a circuit state during the open-circuit failure and maintains the circuit state to which the failure detection and maintenance section shifts. The short-circuiting section short-circuits, when the failure detection and maintenance section maintains the circuit state during the open-circuit failure, both ends of the light emitting device in which the open-circuit failure is detected.

The invention discloses a light source device, a light source producing method and a laser projector comprising the light source device. The light source device comprises a first laser source, a collimation part, a reflecting part, a first light condensation part, a dichroic part, a driving part, a second light condensation part, a wavelength converting part, a third light condensation part, a light receiving part and a reflecting steering lens group. According to the light source device, the light source producing method and the laser projector comprising the light source device, the problem that a light source generates periodic brightness variation can be effectively avoided, and the quality of projector images is greatly improved.

The image projection system includes a projection-type display apparatus that projects an image onto a projection plane and has a first azimuth detector, the first azimuth detector detecting a projection azimuth; an imaging apparatus that images a projection screen of the image and has a second azimuth detector, the second azimuth detector detecting an imaging azimuth; and a signal processor that performs correction processing of the image. The signal processor includes an estimation unit and a correction unit, the estimation unit estimating an inclination of the projection-type display apparatus to the projection plane on the basis of the projection azimuth detected by the first azimuth detector, the imaging azimuth detected by the second azimuth detector, and the captured image acquired by the imaging apparatus; and the correction unit correcting a shape of the projection screen on the basis of the inclination of the projection-type display apparatus estimated by the estimation unit.

The invention relates to a method for the dynamic regulation of projection and a projection display device. The technical problem to be solved by the invention is to provide the method for the dynamic regulation of projection. The method for the dynamic regulation of projection is suitable for a projection display device which is used for displaying output images and comprises a light source, wherein the light source is driven by pulse periodic signals. The method for the dynamic regulation of projection comprises the following steps of: (a) judging brightness parameters of the output images; (b) regulating the pulse periodic signals according to the brightness parameters; and (c) driving the light source by using the pulse periodic signals.

The invention provides a display screen and a laser television. The display screen includes a reflecting prism, one side of the reflecting prism is a flat surface, the other side is a serrated reflecting surface, the reflecting surface includes a plurality of first reflecting surfaces and a plurality of second reflecting surfaces, the first reflecting surfaces are toward a projection light source of the display screen, the second reflecting surfaces and the first reflecting surfaces are different in direction, each of first reflecting surfaces is provided with a protrusion, and the protrusion has different thickness in different positions in a horizontal direction, so that after incident light irradiated on the first reflecting surface is reflected by the protrusion, a vertical plane where formed emergent light is and a vertical plane where the incident light is have an included angle. According to the display screen provided by the invention, the visual angle of the display screen in the horizontal direction can be increased.

An illumination apparatus provided with a light source 4, a polarization splitter 6 disposed facing the light source at about 45 degrees with respect to its light emission direction, a first reflector 8 reflecting and condensing one of the polarization light components polarized and split by the polarization splitter, a quarter wave plate 20 disposed between the polarization splitter and the first reflector, a second reflector 10 reflecting and condensing the other of the polarization light components polarized and split by the polarization splitter, a third reflector 12 disposed around the light source and reflecting the other polarization light reflected by the second reflector and the polarization splitter and proceeding in the light source direction, and a quarter wave plate 22 disposed between the polarization splitter and the third reflector and around the light source, the light reflected at the first reflector and reflected at the polarization splitter being used to illuminate a predetermined surface 16.

The invention discloses a projection robot which comprises a robot body part and a robot head part which is movably connected with the robot body part. The robot head part comprises a shell, a support, a projection module and a transmission assembly driving the shell to move on the robot body part. The projection module is arranged in the shell and provided with a projection window in the projection direction, and a slideway is further formed in the shell. The transmission assembly comprises a rack rail which is arranged along the slideway and linked with the shell, a motor mounted on the support, and a gear arranged on a shaft head of the motor. The gear is engaged with the rack rail. The first end of the support is located in the shell, and an assembly shaft used for assembling the shellis connected to the first end. The second end of the support penetrates through the robot head part to extend to the robot body part and is fixed to the inner side of the robot body part. The gear rotates under driving of the motor, and the shell is driven through the rack rail to move relative to the support. According to the projection robot, the technical problems that a traditional projectionrobot is simple in structure and fixed in projection angle are solved.

The invention discloses a projection table. The projection table comprises a base (1), a support (2) and a worktable plate (3). The support (2) is a telescopic support and comprises a lower upright, an upper upright and a locking device (4). One end of the upper upright is fixedly connected to the center of the bottom face of the worktable plate (3), the other end of the upper upright is arranged inside the lower upright in a sleeved mode, and the upper upright and the lower upright are fixed through a locking device (4). The lower upright is fixedly connected with the base (1) and at least three universal wheels (5) are arranged at the bottom of the base (1). The projection table has the advantages that the height of the projection table is adjustable, the height of a projector can be adjusted according to needs, use is convenient, and due to the fact that the universal wheels are arranged at the bottom of the base, moving is convenient.

An optical module having a high-moisture-proof package structure in which dew condensation does not occur is provided.

An optical module includes optical components including a light source, a pedestal on which the optical components are mounted, a cover which is combined to the pedestal to seal the optical components, and an emitting window disposed in the cover to take light from the light source outside. The pedestal and the cover are sealed with an O ring and a liquid seal material such that a compression direction of the O ring and a compression direction of the liquid seal material are almost perpendicular to each other.

The embodiment of the invention discloses a luminous device and a related projection system. The luminous device comprises a luminous light source, a first wavelength conversion layer and a first light guide component, wherein the luminous light source comprises a light emitting surface comprising a first area and a second area and is used for emitting the first light; the first wavelength conversion layer comprises a first surface and a second surface which are opposite to each other; the first surface is used for absorbing the first light emitted from the first area of the luminous light source so as to emit the received laser; the first light guide component is used for receiving the first light emitted from the second area of the luminous light source and guiding at least one part of the first light to the second surface of the first wavelength conversion layer so as to stimulate the first wavelength conversion layer; and the first light guide component is also used for guiding and emitting the emergent light of the first wavelength conversion layer. According to the luminous device, the luminous brightness of the luminous device can be improved.

In at least one embodiment of the disclosure, a discharge lamp lighting device includes a discharge lamp driving unit that drives a discharge lamp (90) by supplying an AC driving current (I) to the discharge lamp (90). A memory unit (44) is configured to store driving parameters for the AC driving current (I). A control unit (40) is configured to control the discharge lamp driving unit based on the driving parameters stored in the memory unit (44). The driving parameters comprise a range of holding time values, each holding time value representing a time period in which the AC driving currentis to be continuously maintained at a same polarity. Upon a predetermined time condition, the control unit (40) selects one of the holding time values based on a predetermined probability and controls the discharge lamp driving unit based on the selected holding time value.

The present new model is to reveal a kind of projector, and in particular a kind of projector with build-in iPod insertion slot including a projector main body, the said projector main body is installed an insertion slot, through the insertion slot an iPod electronic device can be plugged into the insertion slot; a metal connecting port installed at the base of the insertion slot and for the connection to a control processor, the control processor is installed inside the projector main body, responsible for the control and operation of signal input and output of the projector main body, and through the control processor the iPod electronic device in connection can be controlled and read out indirectly. Such projector combined with insertion slot saves the complicated external connection setup, saves space effectively, and projectors can be designed with better and more practical shape for iPod products.

A method for positioning a light modulation element of a projector comprising: providing the projector including a first light modulation element unit having a first through a three light modulation elements, a second light modulation element unit having a fourth through a sixth light modulation elements, and a combining system for combining first image light supplied from the first light modulation element unit and second image light supplied from the second light modulation element unit and supplying combined light, positioning first light modulation element unit and second light modulation element unit such that color of combined light of color lights obtained from the first light modulation element, the second light modulation element, and the sixth light modulation element and combined by the combining system becomes a predetermined color.