Abstract: A display system for presenting three-dimensional images. The display system includes projection unit including projection subassemblies, wherein each projection subassembly includes array of point-like light sources, spatial light modulator and controller; projection screen; and processor. The processor is configured to: process three-dimensional data pertaining to a scene to generate image data of three-dimensional image; and display three-dimensional image, via projection subassemblies of the projection unit, wherein, in each of projection subassemblies, the controller is configured to multiplex operations of individual point-like light sources of the array and the spatial light modulator in a time-sequential manner, based on the image data of three-dimensional image, to display a plurality of segments of three-dimensional image sequentially.

Abstract: A projector according to the present disclosure includes a light source apparatus including a light source section including first, second, third, and fourth light emitters sequentially arranged in a row along a first direction that intersects a light exiting direction, a first optical section that shifts light outputted from the second light emitter in a second direction and shifts the light outputted from the second light emitter to a position adjacent to light outputted from the third light emitter, and a second optical section that shifts the light outputted from the third light emitter in the second direction and shifts the light outputted from the third light emitter to a position adjacent to the light outputted from the second light emitter; a light modulator that modulates light outputted from the light source apparatus; and a projection optical apparatus.

Abstract: An optical multiplexer includes: an incident surface on which incident light beams having different wavelengths are to be incident; a reflection portion configured to reflect the incident light beams; and an emission surface configured to emit reflected light beams reflected by the reflection portion. The incident surface has adjacent condenser lenses corresponding to the respective incident light beams. The reflection portion has adjacent reflection surfaces configured to reflect the respective incident light beams which have been condensed. The adjacent reflection surfaces are respectively disposed so that angle ? formed by the respective reflected light beams reflected by the adjacent reflection surfaces is smaller than angle ? formed by the respective incident light beams which have been condensed. The emission surface has diffraction grating in which the respective reflected light beams reflected by the adjacent reflection surfaces are to be incident at a same position and diffracted in a same direction.

Abstract: An image display apparatus according to an embodiment of the present technology includes: a light emission unit; an object to be irradiated; and a reflection portion. The light emission unit emits image light along a predetermined axis. The object to be irradiated is disposed at least partially around the predetermined axis. The reflection portion is disposed facing the light emission unit with reference to the predetermined axis and has a plurality of reflection regions that divides the emitted image light into a plurality of light beams and reflects the light beams toward the object to be irradiated.

Abstract: Embodiments of the invention provide apparatuses, methods, and systems for projecting images into a projection zone, while having the capability to detect the presence and movement of objects in the projection zone and to interact with those objects, according to programmed interactions. One of the programmed interactions may be to detect objects in the projection zone and avoid projecting light onto them. The capability to detect and avoid objects in the projection zone may allow for the use of high intensity light images including laser light images around people and animals without the risk of eye injury. Another programmed interaction may be to project an illuminated image around people and objects in the projection zone to emphasize their presence and movement.

Abstract: The disclosure proposes a projection lens including a first lens group, a second lens group and a third lens group arranged in sequence along an optical axis from a magnification side to a reduction side. The first lens group includes a plurality of lenses having refractive power. The second lens group includes at least one lens having refractive power. The third lens group includes a diaphragm, and a plurality of lenses having refractive power, wherein an intermediate image is formed between the first and third lens groups, and the refractive powers of the first, second and third lens groups are positive, positive, and positive, respectively. A projection device including the above projection lens is also proposed.

Abstract: A wavelength conversion element includes a base plate and a rotating device. The base plate has a first surface and a second surface. The first surface is configured to allow a fluorescent layer to dispose on. The base plate includes some first grooves and some second grooves. The first grooves are disposed on the first surface around a center of the base plate. The second grooves are disposed on the second surface around the center. The first grooves and the second grooves are staggered from each other along a rotating direction. The base plate has some through holes. Each of the through holes communicates with the second surface and the corresponding first groove. The rotating device is connected with the base plate and configured to drive the base plate to rotate about an axis along the rotating direction. The axis passes through the center.

Abstract: A display apparatus includes a light source; an image generation unit; and a projection optical system. The image generation unit generates image light on the basis of light from the light source. The projection optical system includes a first lens system, a first reflective optical system, a second lens system, and a second reflective optical system. The first lens system refracts the generated image light. The first reflective optical system has first and second reflection surfaces that fold back and reflect the image light refracted by the first lens system. The second lens system refracts the image light reflected by the second reflection surface. The second reflective system has a recessed reflection surface for reflecting the image light refracted by the second lens system toward an object to be projected.

Abstract: An image display device includes: an image input unit having a plurality of channels; a generation unit which processes input data inputted to each of the plurality of channels and generates display image data for displaying an image of one frame; and a detection unit which detects a missing of input data on each of the channels. If a missing of input data is detected by the detection unit, the generation unit executes interpolation processing to interpolate and generate an image feature quantity of an unset pixel which is a pixel forming the display image data and whose image feature quantity cannot be set due to the missing of input data. In the interpolation processing, the image feature quantity of the unset pixel is interpolated with an image feature quantity of a reference pixel selected from pixels other than the unset pixel.

Abstract: A projector, a rotational phase control device, a program for the rotational phase control device, and a wheel rotational speed control method include: a phosphor wheel that emits a plurality of different color lights at a cycle corresponding to a rotational speed when excitation light is irradiated; a color wheel into which the lights emitted from phosphor wheel enter; and a rotational phase control device that controls a rotational speed and a phase of color wheel in accordance with a rotational speed and a phase of phosphor wheel so that a phase relationship between phosphor wheel and color wheel is not changed and so that a rotational speed ratio between phosphor wheel and color wheel is equal to a rotational speed ratio between phosphor wheel and color wheel in a steady state.

Abstract: An electronic device includes a lens system including four lens elements. the four lens elements are, in order from an outer side to an inner side, a first lens element, a second lens element, a third lens element and a fourth lens element. The second lens element has negative refractive power. The fourth lens element has positive refractive power. At least one surface of the four lens elements has at least one inflection point. A projection device and a detecting module of the electronic device including the lens system are also disclosed.

Abstract: A projector protection method includes: multiple temperature sensors detect temperatures of multiple areas in a projector to obtain multiple temperature parameters respectively; a processor lowers an output power of a laser source when any temperature parameter corresponding to one of areas falls into corresponding one of multiple first temperature intervals and multiple fans in the projector are set to a maximum speed; and the processor turns off the laser source when any temperature parameter corresponding to one of areas falls into corresponding one of multiple second temperature intervals. The second temperature interval and the first temperature interval corresponding to the same temperature parameter are different from each other.

Abstract: A projection optical system includes: a first optical system and a second optical system disposed in that order from an enlargement side. The second optical system forms an intermediate image of the image, and the first optical system enlarges and projects the intermediate image. The first optical system includes: a first lens group, a first reflecting optical element, and a part of a second lens group, disposed in that order from the enlargement side. The second optical system includes: a remainder of the second lens group, a second reflecting optical element, and a third lens group, disposed in that order from the enlargement side. The second reflecting optical element reflects light output from the third lens group toward the second lens group. The first reflecting optical element reflects light output from the second lens group toward the first lens group.

Abstract: A laser generator is provided. The laser generator includes a substrate and an array of light-emitting elements. The array of light-emitting elements is arranged on the substrate. The array of light-emitting elements includes a basic array and an additional array added to the basic array. The basic array forms a basic area, and the additional array forms an additional area. The basic array includes at least three basic sub-arrays, and each basic sub-array forms a basic sub-area. The basic area includes a common area arranged in at least three basic sub-areas, and the common area is further arranged within the additional area.

Abstract: A light source device comprising: a light source section which generates any one of blue light, red light, and green light; a phosphor which generates a fluorescence including the two colors other than the color of the light emitted from the light source section; a color-changing section which changes one of the two colors of the fluorescence emitted from the phosphor to another color regularly and irradiates it to the image-forming element; and a light path-switching section which switches a light path in which a fluorescence excited by the color light emitted from the light source section passes towards the color-changing section and a light path in which the color light emitted from the light source section passes towards the image-forming element regularly.

Abstract: A projection system, comprising: a light-emitting apparatus for providing first light and second light emitted in a time sequence; a light-splitting system for dividing the first light into first primary color light and second primary color light, and dividing the second light into two paths of third primary color light; a spatial light modulator, comprising a first region and a second region, wherein the primary color light emitted along a first optical path enters the first region, and the primary color light emitted along a second optical path enters the second region; and an image processing apparatus for dividing, corresponding to the first region and the second region, image signals to be output into two groups, and changing the sequence of at least one of the groups so as to match the time sequence of primary color light received in a corresponding region.

Abstract: A light source system includes an excitation light source configured to generate an excitation light; a wavelength conversion device including a conversion region and a non-conversion region, wherein the conversion region is configured to perform a wavelength conversion on the excitation light and first light along a first optical path, the non-conversion region is configured to scatter the excitation light and emit second light along a second optical path, and the conversion region is further configured to emit unconverted excitation light as third light along a third optical path; an adjustment device configured to guide and adjust the first light, the second light and the third light to be emitted in a first divergence angle, a second divergence angle, and a third divergence angle, respectively; and a first reflective element configured to guide the second light and a portion of the third light to enter the adjustment device.

Abstract: A method includes projecting a single color illumination light having a first color on a liquid crystal on silicon display device, thereby obtaining a single color image light having the first color from the liquid crystal on silicon display device. The method also includes receiving image light having at least a second color that is different from the first color from a display panel that is different from a liquid crystal on silicon display device and combining the single color image light and the image light for projection toward an eye.

Abstract: A phosphor wheel (300, 400, 500, 600) includes an annular disc (310, 410, 510, 610) having phosphor segments (320, 420, 522, 524, 620) and an exposed annular sector (305, 405, 505, 605), a hub (330, 430, 530, 630) coupled to the inner perimeter (304, 413) of the annular disc, and a balancing piece (340, 440, 540, 640) located between the hub and the exposed annular sector. The balancing piece minimizes the initial imbalance of the phosphor wheel about the center (301, 441, 541) of the disc due to the exposed annular sector by making up the difference in torque. A method for making a phosphor wheel, a projector comprising a phosphor wheel, and a method for minimizing imbalance in a phosphor wheel.

Abstract: There is provided an image processing device, an image projection device, a control device, an information processing device, an image projection system, an image processing method, and a program that make it possible to suppress a reduction in a subjective image quality. On the basis of each frame image of a moving image, a time during which a projection image of each frame image of the moving image is viewable by a user is controlled. For example, a controller controls the time during which the projection image is viewable by the user, to cause a difference between the moving image and the projection image due to a reduction in a luminance and a difference between the moving image and the projection image, which increases due to an increase in the time during which the projection image is viewable by the user, to be suppressed.