Abstract: A projector includes: a white light generator that uses a blue laser as a light source to generate blue light and yellow light based on the blue laser and generates white light including the generated blue light and yellow light; and an optical system that modulates light based on the white light generated by the white light generator with an image display element and projects the modulated light, wherein the white light generator includes: a dichroic mirror that is irradiated with the blue light from the blue laser as the light source; a first condenser lens that focuses blue light being reflected by or passing through the dichroic mirror; a diffusion plate that diffuses the blue light focused by the first condenser lens; a second condenser lens that focuses the blue light passing through or being reflected by the dichroic mirror; and a phosphor that emits yellow light.

Abstract: A method and apparatus for mounting a projector holder to or placing a projector holder on an object for displaying an image onto a surface is disclosed. The projector holder includes a body within which a projector is at least partially disposed. The body includes one or more pliable appendages that are adapted to be manipulated and deformed from a first configuration to a second configuration. In some embodiments, the body is formed in the shape of an animal.

Abstract: A method and a system for projecting a construction plan or a specified pattern in a construction site. The system may include: a light projector configured to project an image associated with the construction plan or the specified pattern, onto a specific surface within the construction site; at least one sensor configured to obtain dimensional parameters of at least one of: the specific surface, and the image as projected on the specific surface; and a computer processor configured to: derive, from the construction plan or the construction pattern, an intended projection portion which comprises visual content intended to be projected on the specific surface; calculate a model of said image, based on the dimensional parameters obtained from the at least one sensor; and generate a modified projection portion based on the model, and the intended projection portion, wherein the light projector is further configured to project said modified projection portion.

Abstract: The present disclosure discloses a projection lamp for projecting a nebula and a starry sky comprising a housing, a light source assembly, a laser assembly, a rotating assembly, a control board, a base seat, and a power source port. The light source assembly and the laser assembly are disposed in the housing and penetrate through the housing, and the rotating assembly and the control board are disposed in the housing. The rotating assembly is configured to drive a rotating optical sheet and a diffraction sheet to rotate. The light source assembly comprises a light source board, a light reflecting cup, a fixed optical sheet, the rotating optical sheet, and a lens assembly. The light source board, the light reflecting cup, the fixed optical sheet, the rotating optical sheet, and the lens assembly are successively disposed along a path in which light rays emitted by the light source board move.

Abstract: The disclosure describes artificial reality (AR) systems and techniques that enable a change in focus of virtual image content without substantially changing magnification of real-world content. For example, an AR system includes a virtual image content output device, a first tunable lens on a real-world side of the virtual image content output device, a second tunable lens on an eye side of the virtual image content output device, and at least one compensating lens. The at least one compensating lens is configured to substantially eliminate magnification changes of real-world light between a real-world end of the optical system and an eye-side end of the optical system as a focal power of at least one of the first tunable lens or the second tunable lens changes.

Abstract: A light source unit includes a first light emitting device configured to emit light in a first wavelength range, a luminescent wheel comprising a luminescent light emitting area configured to emit luminescent light that is excited by the light in the first wavelength range as light in a second wavelength range, and a color wheel onto which the light in the first wavelength range and the light in the second wavelength range are shined. A filter selects a part of the wavelength from the shined light in the first wavelength range and the light in the second wavelength range. A wheel surface of the color wheel is inclined with respect to axes of the light in the first wavelength range and the light in the second wavelength range.

Abstract: A projection device comprises first light sources, an interference disk, a condensing lampshade, and a driving device. Both of the interference disk and the condensing lampshade are arranged on light paths of the first light sources. The condensing lampshade is arranged behind the interference disk, and the interference disk is made stationary relative to the first light sources. The driving device drives the condensing lampshade to rotate. When the driving device drives the condensing lampshade to rotate, the projection light emitted after sequentially passing through the interference disk and the condensing lampshade projects an effect of clouds moving. The light paths of the projection light emitted by the first light sources are relatively stable after passing through the interference disk and before entering the condensing lampshade.

Abstract: An illumination system and a projection apparatus are provided. The illumination system includes an excitation light source, a light guiding element, a filter module, an optical wavelength conversion module, and a homogenizing element. The light guiding element reflects an excitation beam coming from the excitation light source. The filter module includes a filtering region and receives the excitation beam reflected by the light guiding element. The optical wavelength conversion module includes a wavelength conversion region, receives the excitation beam reflected by the filtering region and reflects a conversion beam converted from the excitation beam. The conversion beam forms at least one color beam after passing through the filtering region of the filter module. The homogenizing element receives the excitation beam coming from the filter module and the at least one color beam. An incident angle of the excitation beam on the light guiding element is ?1, and ?1>0°.

Abstract: An illumination system includes first laser light sources, second laser light sources, an optical module, and a light homogenizing element. The first and second laser light sources respectively provide first and second beams. A light spot area formed when the second beams are emitted is different from that formed when the first beams are emitted. The optical module converts the first beams into spot-expanding beams which form a light spot area different from that of the first beams. The light homogenizing element includes a light incident face disposed on transmission paths of the second beams and the spot-expanding beams. A difference between light spot areas formed by the second beams and the spot-expanding beams on the light incident face is less than a difference between light spot areas formed when the second beams and the first beams are emitted. A projection apparatus having the illumination system is further disclosed.

Abstract: A projector for illuminating a target area is presented. The projector includes an array of emitters positioned on a substrate according to a distribution. Each emitter in the array of emitters has a non-circular emission area. Operation of at least a portion of the array of emitters is controlled based in part on emission instructions to emit light. The light from the projector is configured to illuminate the target area. The projector can be part of a depth camera assembly for depth sensing of a local area, or part of an eye tracker for determining a gaze direction for an eye.

Abstract: A light source device includes a light emitting element, and a microlens array having a first multi-lens surface and a second multi-lens surface. The light which enters the first multi-lens surface has an angular distribution. The first multi-lens surface has a plurality of first cells arranged in an array, and the second multi-lens surface has a plurality of second cells arranged in an array. Light proceeding from one of the first cells toward the second multi-lens surface has a first light beam which enters one second cell, and a second light beam which enters another second cell different from the one second cell. A first area of an illumination target is irradiated with the first light beam, and a second area of the illumination target different from the first area is irradiated with the second light beam.

Abstract: A wavelength conversion element according to the present disclosure includes a substrate, a dichroic layer provided to a first surface of the substrate, an intermediate layer disposed so as to be opposed to the substrate via the dichroic layer, and a wavelength conversion layer disposed so as to be opposed to the dichroic layer via the intermediate layer, and configured to convert light in a first wavelength band into light in a second wavelength band. The dichroic layer has two or more types of refractive index layers having respective refractive indexes different from each other.

Abstract: An imaging system includes an image realisation device, and projection optics for rendering a display image on a display screen. The image realisation device includes an image realisation surface and a light structuring device having a surface with a first and second region. The light structuring device simulates a first lens on the first region of the surface. A first source image formed on a first region of the image realisation surface and projected through the projection optics renders a first display image on the display screen at a first apparent depth. The light structuring device simulates a second lens on the second region of the surface. A second source image formed on a second region of the image realisation surface and projected through the projection optics renders a second display image on the display screen at a second apparent depth. The first and second lens are independently configurable.

Abstract: An imaging system includes at least one laser light source having a wavelength in the visible spectral range and a beam guidance element with high solarization resistance at high beam power densities. The invention also relates to the use of the imaging system, in particularly in projectors and in material processing.

Abstract: A presentation system for a celebration of an individual comprising: a frame; a lighting system disposed along an inner edge of a perimeter of the frame; a fabric removably attached to the frame disposed outwardly from the lighting system adapted to be illuminated by the lighting system; an image included on the fabric associated with aspects of a subject of the celebration of the individual; and, a memorial container disposed in front of the fabric wherein the image and the memorial container cooperate to form a composite image when viewed by an audience.

Abstract: An optical element according to the present disclosure includes a main body part including an optical part having an optical surface, and a support part which is provided to the optical part, and which is to be supported by a support body, and a functional layer which is provided as a film to the main body part, wherein the functional layer is disposed so as to cover the optical surface of the optical part, and so as not to cover at least a part of the support part.

Abstract: Provided is an illumination system for providing an illumination beam. The illumination system includes at least one light source, a movable reflective element, a lens element, and a light uniformizing element. The light source is configured to emit at least one beam. The beam is reflected by the movable reflective element, and then passes through the lens element and the light uniformizing element to form an illumination beam. An optical effective area of the beam on the lens element is configured to be larger than that of the beam on the movable reflective element by motion of the movable reflective element. The optical effective area is an area of a union of each beam that irradiates the lens element or the movable reflective element at different times. A projection device is also provided. The illumination system and projection device provide a uniformized illumination beam and improve the projection effect.

Abstract: An optical processing turntable and a projection device are provided. The optical processing turntable has a first mass center and a height. The optical processing turntable includes a substrate and a driving component. The substrate has a second mass center. The driving component is disposed on the substrate to drive the substrate to rotate. The driving component has a locking surface. A distance between the locking surface and one of the first mass center and the second mass center relatively far from the locking surface is less than or equal to ? of the height. The invention can effectively reduce the vibration and noise of the optical processing turntable during high-speed operation, and can increase the operating life of the optical processing turntable.

Abstract: A projection device includes an optical lens and a light source. The optical lens has an incident surface of light, a reflecting surface that has a concave curved surface and internally reflects light that has entered through the incident surface, and an exit surface of light that has been reflected by the reflecting surface. The light source that emits light that enters the optical lens.

Abstract: There is provided a collimator lens capable of adjusting a reflection angle of fluorescence with high accuracy and emitting the fluorescence with high efficiency. Provided is a collimator lens including an aperture, a reflecting portion, and a condensing portion, in which the reflecting portion formed on an inner peripheral surface reflects, to the condensing portion, light emitted from the condensing portion, and the light collected at the condensing portion is emitted toward the aperture or the reflecting portion. Furthermore, there is provided a light source device including the collimator lens, an excitation optical system, and a phosphor.