Abstract: A screen comprises the following layers sequentially stacked from an incident side of projected light rays: a micro-lens layer, a transparent matrix layer, a total internal reflection layer, and a light-absorbing layer. The light-absorbing layer absorbs light passing through the micro-lens layer, the transparent matrix layer and the total internal reflection layer. The micro-lens layer comprises a plurality of micro-lens units. The total internal reflection layer comprises a plurality of microstructure units. The microstructure unit has a lower first flat surface and an upper second flat surface. The first flat surface intersects the second flat surface The micro-lens units and the microstructure units are at least partially arranged in an alternating manner. The projected light rays converged toward the first flat surface exit after being totally reflected by the first flat surface and the second flat surface sequentially.
Abstract: A color wheel heat dissipation device and a projection apparatus having the same are provided. The color wheel heat dissipation device includes a housing, a color wheel, a built-in radiator and a fan, wherein the housing includes a first cavity, a second cavity, and a third cavity that are mutually communicated with one another, the first cavity and the second cavity are sequentially arranged in an airflow direction; the built-in radiator is located in the first cavity; the fan is located in the second cavity; and the color wheel is located in the third cavity. The color wheel heat dissipation device and the projection apparatus having the color wheel heat dissipation device can maximally increase the heat exchange rate in the color wheel cavity, improve performance of the color wheel, reduce temperature of the color wheel, thereby achieving the purpose of improving efficiency and service life of the product.
Abstract: A laser light source (300), a wavelength conversion light source, a light combining light source, and a projection system. The laser light source comprises a laser element array, a focusing optical element (33), a collimation optical element (34), an integrator rod (36) for receiving and homogenizing a secondary laser beam array (382), an angular distribution control element (35) disposed on the light path between the laser element array and the integrator rod (36) for enlarging the divergence angle of the laser beam array (382) in the direction of the short axis of the light distribution, such that the rate between the divergence angle of each of the secondary laser beam that enters the integrator rod (36) in the direction of the short axis of the light distribution and the divergence angle in the direction of the long axis is greater than or equal to 0.7.
Abstract: A composite ceramic with improved mechanical performance and a preparation method therefor. The composite ceramic comprises fluorescent powder, a ceramic matrix, and an optional sintering aid. The weight ratio of the fluorescent powder to the ceramic matrix is from 3:17 to 9:1, and the relative density of the composite ceramic is greater than 95%. The preparation method comprises using core shell-structured coated fluorescent powder as a raw material, and ball-milling and sintering the raw material to obtain the composite ceramic.
Abstract: The present disclosure relates to an image processing apparatus, a display apparatus, and an image processing and display apparatus and method. The image processing and display apparatus includes a data acquisition module, a data conversion and storage module, a data analysis module, a light-emitting module, and an image modulation module. The data conversion and storage module stores brightness data of a color of each pixel of an image as N-bit grayscale data based on data of a highest brightness of the color of the image and stores a brightness increase index of the color of the image. The light-emitting module adjusts emitted illumination light of the color based on the brightness increase index, so that the image modulation module modulates the illumination light of the color based on the N-bit grayscale data to modulate a displayed image.
Abstract: The present disclosure relates to a wavelength conversion device, a light source and a projection device. A light conversion region and a light path conversion region are provided on one surface of the wavelength conversion device. The light path conversion region includes a first segment and a second segment. The first segment and the second segment are configured to alternately receive excitation light and respectively guide the excitation light to different preset light paths. The light conversion region is provided with a wavelength conversion material for receiving excitation light emitted from one of the segments, converting the received excitation light into excited light that has at least one wavelength range different from a wavelength of the excitation light, and emitting the excited light.
Abstract: The light source system includes a first light source, a light splitting device, a wavelength conversion device, and a light guiding device. The first light source emits first light. The wavelength conversion device includes at least a first color light region and a second color light region, which are sequentially inserted into an outgoing path of the first light. The first color light region emits second light excited by the first light to the light splitting device. The second color light region reflects the first light to the light splitting device. The light splitting device directs one of the first light and the second light to a light path and directs the other to the light guiding device. The first light or the second light is reflected by the light guiding device to the light splitting device, and then is guided to the light path by the light splitting device.
Abstract: A light source system comprises: an exciting light source for emitting exciting light; a supplemental light source for emitting supplemental light; a wavelength conversion apparatus for converting the wavelength of part of the exciting light and emitting first light; and a guide apparatus comprising a converging lens and a light combining element. The converging lens is used for adjusting a divergence angle of the first light. The light combining element comprises a first region. The supplemental light focuses on the vicinity of the first region, and the supplemental light and the first light emitted from the converging lens are combined with etendue at the light combining element. Light spots of the first light on a surface of the wavelength conversion apparatus form a magnified image at the light combining element by means of the converging lens.
Abstract: An optical module a first adjusting screw rod, a first anti-loosening assembly, a second adjusting screw and a second anti-loosening assembly. The first adjusting screw rod is configured to adjust a position of a component in a first direction a, and the second adjusting screw is configured to adjust a position of a component in a second direction b. The first anti-loosening assembly is configured to lock the first adjusting screw rod after position adjustment of the first adjusting screw rod, and the second anti-loosening assembly is configured to lock the second adjusting screw after position adjustment of the second adjusting screw.
January 31, 2018
Date of Patent:
July 6, 2021
APPOTRONICS CORPORATION LIMITED
Jinjiang Fu, Fei Hu, Lunchun Du, Xinbo Wen, Yi Li
Abstract: A multi-layer glass phosphor powder sheet and its preparation method, and a light-emitting device. The preparation method for the multi-layer glass phosphor powder sheet includes: mixing a first optical functional material, a glass powder and an organic carrier to obtain a first slurry, and mixing a second optical functional material, the glass powder and the organic carriers to obtain a second slurry; coating the first slurry on a first substrate, and drying it at a first temperature so that at least some of the organic carrier is volatilized, to obtain a first functional layer, the first temperature being lower than a softening point of the glass powder; coating the second slurry on the surface of the first functional layer, to obtain a second functional layer; and sintering the first substrate on which the functional layers are coated at a second temperature, to obtain the multi-layer glass phosphor powder sheet.
Abstract: Provided is a light-source system, comprising excitation light source, first supplementary light source, first light-guiding assembly, wavelength conversion apparatus, and second light-guiding assembly. The excitation light source is for emitting excitation light; the first supplementary light source is for emitting first supplementary light. The first light-guiding assembly is for guiding the excitation light to the wavelength conversion apparatus. The wavelength conversion apparatus is for converting excitation light to excited light and irradiate onto the first light-guiding assembly. The first light-guiding assembly is for guiding excited light to irradiate onto the second light-guiding assembly. At least some components of the second light-guiding assembly are arranged on the light path from the first light-guiding assembly.
Abstract: A reconfigurable mobile shelter system includes multiple shelter structures and a management system communicating with the shelter structures. The shelter structures are physically independent of each other, each located at a selected location, and configured to be moveable to another selected location without being disassembled and re-assembled. Each shelter structure has an access control subsystem and a user information collection module, and transmits user information to the management system. The management system, based on the received user information, determines whether to permit access by a user to a shelter structure and use of equipment inside, and transmits corresponding commands to the shelter structure. The management system also determines whether any shelter structure is to be moved to another selected location, and controls moving equipment to move them.
Abstract: A light emitting device comprises a coherent source generating coherent light, a diffusing element, and a light guide part. The diffusing element includes first and second surfaces opposite to each other, and disperses the coherent light from the coherent source to generate incoherent light. The light guide part is provided on the side of the first surface of the diffusing element; it guides the coherent light emitting from the coherent source to be incident on the first surface to form a first light path, guides a part of incoherent light emitting from the first surface to emit through the first light path, guides the remaining incoherent light to emit through a second light path, and separates the first and second light paths. The luminous flux of the incoherent light emitting through the first light path is less than that of the incoherent light emitting through the second light path.
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
Date of Patent:
June 1, 2021
APPOTRONICS CORPORATION LIMITED
Kairong Chen, Hao Jiang, Qitao Song, Yi Li
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.