Abstract: A wavelength conversion device, a manufacturing method thereof, and a related illumination device. The wavelength conversion device comprises a fluorescent powder layer (110) that is successively stacked, a diffuse reflection layer (120), and a high-thermal-conductivity substrate (130). The diffuse reflection layer (120) comprises white scattered particles for scattering the incident light; the high-thermal-conductivity substrate (130) is one of an aluminum nitride substrate, a silicon nitride substrate, a silicon carbide substrate, a boron nitride substrate, and a beryllium oxide substrate. The wavelength conversion device has good reflectivity and thermal stability.
June 7, 2014
Date of Patent:
June 1, 2021
Appotronics Corporation Limited
Yanzheng Xu, Zifeng Tian, Qian Li, Hu Xu
Abstract: A display system and method are provided. The display system includes a light source device, an optical processing assembly, a reflection device, a light modulator and a controller. The light source device is configured to emit a plurality of light beams; the optical processing assembly is configured to perform a light path adjustment on each light beam from the light source device in such a manner that the light beam irradiates on the reflection device at a preset light-cone angle; the reflection device is configured to reflect the light beams from the optical processing assembly to the light modulator; the controller is connected to the light source device and the light modulator, and is configured to control a light emission state of the light source device; and the light modulator is configured to modulate the light beams through respective controllable units, so as to emit desired display light.
Abstract: Provided is a light source device, including: a first light source module, a set of lenses, a first light-homogenization component, a first light-combination device, and a wavelength conversion device. The first light source module is configured to emit a first light beam having first wavelength. The set of lenses and the first light-homogenization component are located in propagation path of the first light beam. The set of lenses is configured to converge the first light beam. The first light-homogenization component is configured to homogenize the first light beam. A second light beam formed by homogenization is incident on the first light-combination device, and the first light-combination device is located at a focus position of the set of lenses. The wavelength conversion device is located in propagation path of a third light beam emitted from the first light-combination device and configured to form excited light having second wavelength under excitation.
Abstract: A display system includes: a light source, a light modulator, a recovery device, and a light intensity adjustment device. The light source emits original light that is incident to the light modulator. The light modulator modulates, on the basis of image data of an image to be displayed, the light incident thereto so as to form image light and non-image light. The recovery device recovers the non-image light, and the recovered non-image light is incident to the light modulator. The light intensity adjustment device adjusts, on the basis of the intensity of the non-image light corresponding to the currently modulated image to be displayed, the intensity of the original light emitted by the light source, thus allowing total intensity of the original light and the recovered non-image light that are incident to the light modulator to be kept consistent in modulation periods for different images to be displayed.
Abstract: A projection system includes a light emitting device, a light valve and a control device. The light emitting device emits light of colors at least including a first color, a second color and a third color, and the third color is a color mixing the first color and the second color. The control device acquires gray scale values corresponding to at least the first color and the second color of each pixel point in an input image, and determines gray scale values corresponding to the first color, the second color and the third color of a corresponding pixel point in a pre-displayed image according to the gray scale values corresponding to the first color and the second color. The present disclosure also provides an image modulation method applied to the projection system.
Abstract: A lens sealing sleeve includes a hollow cylindrical sleeve body used for a lens barrel to pass through and including a plurality of fold portions arranged along the axial direction, and two ends of the sleeve body are provided with a first opening and a second opening. The lens sealing sleeve also includes a first connection portion and a second connection portion. The first connection portion includes a first protrusion at least partially surrounding the first opening and correspondingly extending in a direction facing away from a central line of the first opening. The second connection portion includes a second protrusion at least partially surrounding the second opening and correspondingly extending in a direction facing away from a central line of the second opening. The first protrusion is provided with a first connection hole. The second protrusion is respectively provided with a second connection hole.
Abstract: A light source system (100) comprises: an excitation light source (120) used to generate an excitation light beam; a waveform conversion device (160) comprising a conversion region (161) and a non-conversion region (164), wherein the conversion region (161) is used to perform a wavelength conversion operation on a portion of the excitation light beam and to emit the same as a first light beam along a first optical path, the non-conversion region (164) is used to scatter another portion of the excitation light beam and to emit the same as a second light beam along a second optical path, and the conversion region (161) is also used to emit an unconverted portion of the excitation light beam as a third light beam along a third optical path; an adjustment device used to guide the first light beam, the second light beam and the third light beam entering thereto, and to perform adjustment such that the first light beam, the second light beam and the third light beam are emitted at a first divergence angle, a second
Abstract: A light emitting device includes a first light source, a light guiding system and a wavelength conversion device. The first light source is configured to emit first excitation light which enters the light guiding system via an incident light channel. The light guiding system is configured to guide the first excitation light to the wavelength conversion device. The wavelength conversion device includes a reflecting segment that reflects the first excitation light to form second excitation light. The light guiding system is further configured to collect the second excitation light and guide the second excitation light to exit via an output light channel. The first excitation light and the second excitation light have non-overlapping light paths.
Abstract: A wavelength conversion device, comprising a light-emitting layer, a reflection layer, and a substrate layer stacked upon each other in that order. The light-emitting layer comprises a wavelength conversion material and a first glass powder. The reflection layer comprises a reflection particle and a second glass powder. The second glass powder has a smaller particle diameter compared to the first glass powder. The technical solution achieves equivalent softening of the reflection layer and light-emitting layer in a sintering process for manufacturing the wavelength conversion device, thereby overcoming the issue of inadequate softening of the reflection layer and improving an adhesive strength between the reflection layer and the substrate layer.
Abstract: Provided is a wavelength conversion apparatus that includes a metal substrate; and a light-emitting ceramic layer. The light-emitting ceramic layer is used for absorbing excitation light and emitting excited light having a wavelength different from that of the excitation light. A metal reflective layer and a silica gel layer are stacked between the metal substrate and the light-emitting ceramic layer, and the reflective layer is used for reflecting the excited light and an unconverted part of the excitation light. The wavelength conversion device can reduce heat generated in the wavelength conversion apparatus, while realizing an aim of emitting excited light having a high illumination intensity in the wavelength conversion apparatus.
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 total reflection screen comprises a light diffusion layer, a total reflection layer and a light absorption layer arranged sequentially from an incidence side of the projected light. The light absorption layer can absorb an incident light. The light diffusion layer is used for increasing a divergence angle of an emergent light. The total reflection layer comprises a plurality of microstructure units that is rotationally symmetrical and extends continuously in a plane of the total reflection screen. Each of the microstructure units comprises a first material layer disposed at the side of the light diffusion layer and a second material layer disposed at the side of the light absorption layer. The interface between the first material layer and the second material layer is comprised of two intersecting planes, which are disposed in such a way that the projected light is subjected to total reflection continuously at the two intersecting planes.
Abstract: A stereoscopic image projection device and stereoscopic display glasses include a light source system for sequentially generating a first broad spectrum light and a second broad spectrum light; a light splitter for splitting the first broad spectrum light into a first wavelength light and a second wavelength light, each having different wavelengths, and splitting the second broad spectrum light into a third wavelength light and a fourth wavelength light, each having different wavelengths; and a controller for simultaneously controlling the first wavelength light to display a corresponding color in a left-eye image and the second wavelength light to display a corresponding color in a right-eye image, and simultaneously controlling the third wavelength light to display a corresponding color in the left-eye image and the fourth wavelength light to display a corresponding color in the right-eye image.
Abstract: Disclosed is a light source device, including a first light source, a fly-eye lens pair, a light guiding system and a wavelength conversion device. The first light source emits first exciting light. The wavelength conversion device includes a wavelength conversion section and a reflective section. The wavelength conversion section absorbs the first exciting light and emits excited light. The first exciting light is obliquely incident to the reflective section and is reflected to form second exciting light. The light guiding system is also used for collecting the excited light and the second exciting light and guiding them to exit along an exiting light channel. The light guiding system reflects the second exciting light in such a manner that main optical axes of the reflected second exciting light and the excited light coincide. Lens units perform imaging with overlap on a surface of the wavelength conversion device.
Abstract: A projection display system, comprising: a first light source for emitting a first light; a first light modulation system for receiving the first light and modulating the first light into a first image light; a supplementary light source for at least emitting a supplementary light, wherein a spectrum of the first light comprises a spectrum of the supplementary light; a second light modulation system for receiving the supplementary light and modulating the supplementary light into a supplementary image light; a light combining device for combining the first image light and the supplementary image light, the beam cross-sectional area of the first image light being greater than the beam cross-sectional area of the supplementary image light at the light combining position; and a projection lens system for causing the first image light and the supplementary image light to form coincident images at a predetermined position.
Abstract: A light source module includes a light source array, a lens array arranged corresponding to the light source array, a condensing lens covering partial regions of the light source array and the lens array, and a reflecting mirror array positioned between the condensing lens and the lens array. The reflecting mirror array includes multiple reflecting mirrors, or multiple reflecting mirrors and polarizing filters. A light path of light beam emitted by each light source of the light source array not covered by the condensing lens is provided with at least two reflecting mirrors, or at least one reflecting mirror and one polarizing filter. The last reflecting mirror or the polarizing filter in each light path is positioned in the area covered by the condensing lens, and accordingly a light beam which can not be directly incident to the condensing lens is transmitted to the condensing lens.
Abstract: A light guide component and a light source device. The light guide component comprises a reflecting plate (131) having an aperture and a transflective coated plate (132). The reflecting plate (131) reflect light. The aperture allows light to pass through. The transflective coated plate (132) is connected to the reflecting plate (131) and covers the aperture, and transmits an excitation light and reflects light of a color different from that of the excitation light.
Abstract: A light source, including an excitation light source, an excited light supplying device, a partially coating film and a light supplementing device. The partially coating film is arranged on light path of the excitation light and the excited light, which includes a first area for transmitting/reflecting the excitation light to form main path light or side path light respectively, and a second region area for reflecting/transmitting all incident light; the excited light supplying device is provided on light path of the main path light to generate excited light transmitted to the partially coating film after irradiated by main path light; the light supplement device is provided on light path of the side path light for performing light homogenization on the side path light and generating supplemental light transmitted to the partially coating film; and the supplemental light combines with the excited light after passing through the partially coating film.
Abstract: A projector control system and a control method corresponding to same. The system includes a main controller, a dynamic current adjusting module, a color wheel controller, a color wheel rotation speed feedback module, and a light source; the dynamic current adjusting module includes a DLP module, a light source controller, and a power supply module; the color wheel rotation speed feedback module generates a feedback signal; the DLP module receives the feedback signal, and the DLP module receives dynamic brightness information and sends processed dynamic brightness information and a control signal to the light source controller according to the feedback signal; the light source controller controls the power module according to the received processed dynamic brightness information and the control signal sent by the DLP module to turn on a power switch and output a corresponding current value.
December 6, 2017
October 8, 2020
APPOTRONICS CORPORATION LIMITED
Kairong CHEN, Hao JIANG, Qitao SONG, Yi LI
Abstract: A light source system includes an excitation light unit, a spectral filter unit, a scattering unit, and an excited-light unit. The excitation light unit is configured to emit excitation light. In an embodiment, the spectral filter unit reflects a portion of the excitation light to the scattering unit, the scattering unit scatters the same to generate a first light and a second light, and the spectral filter unit transmits the second light. The spectral filter unit also transmits another part of the excitation light to the excited-light unit, the excited-light unit emits excited light under the illumination thereof, and the spectral filter unit reflects the excited light, so that the spectral filter unit merges and emits the transmitted second light and the reflected excited light. The excitation light is thus split into two paths at the spectral filter unit, and finally emits light by combining excitation light and excited light.