Abstract: A projection device, comprising a light source device and a control device. The light source device is configured to, according to instructions, emit laser light of first primary color, second primary color, third primary color, and a fourth mixed color fluorescence, respectively. The control device is configured to determine a color gamut range of pixels of an image to be modulated, and transmit the instructions according to the color gamut range to control the light source device to output light required for modulation of the image to be modulated from the laser light of first primary color laser, second primary color, third primary color, and fourth mixed color fluorescence, respectively. The device and method are capable of modulating an image with a wide color gamut, and also save light source energy.

Abstract: A light source device, includes an excitation light source for generating excitation light, a light condensing device, and a fluorescent cavity. The fluorescent cavity includes a chamber and a fluorescent layer, the chamber having a light window for allowing light to enter and exit and a bottom wall opposite to the light window. The fluorescent layer is provided on the surface of the bottom wall. The excitation light is concentrated by the light condensing device, and then is incident from the light window to the surface of the fluorescent layer to form a light spot and excite the fluorescent layer to generate a laser.

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: A light source system and a lighting apparatus comprising: a light-emitting module which emits first light along a first light path and second light along a second light path; a wavelength conversion device which received the first light to emit excited light with a different color from that of the first light; and a compensation device which guides the second light and adjusts a luminous intensity distribution of the second light so that the luminous intensity distribution of the second light exiting from the compensation device is substantially identical to that of the excited light. The second light exiting from the compensation device is combined with the excited light to form third light to be emitted from the light source system. The luminous intensity distributions of the first light and the second light in the third light are substantially the same, and illumination light spots have a uniform color.

Abstract: The display device comprises a light source device, an image pre-processing controller, and a light modulation device. The light source device emits first light and second light, wherein a color gamut range of the second light is wider than that of the first light. The image pre-processing controller acquires a color gamut range of the image to be displayed and a brightness value of each pixel based on original image data of an image data to be displayed, and determines a current color gamut range and controls the light source device to emit first light and the second light corresponding to amount of light required in the current color gamut range. The light modulation device modulates the light emitted by the light source device to generate image light of the image to be displayed based on image data corresponding to the current color gamut range.

Abstract: A display apparatus comprises a light source device, an image data processing module, a light modulating device and an image synthesizing device. The light source device is configured to emit first light and second light. The image data processing module is configured to receive original image data of an image to be displayed, wherein the original image data of the image to be displayed is based on image data within a second color gamut range and comprises original control signal values of m colors of each pixel; the second color gamut range covers a first color gamut range and has a portion that exceeds the first color gamut range. The image data processing module is further configured to map the original control signal values of the m colors into m corrected control signal values corresponding to the first light and n corrected control signal values corresponding to the second light.

Abstract: A projection system includes a signal processor, a light source, an optical relay system, an adjusting member, and a DMD. The signal processor receives image data. The signal processor increases grayscale values of pixels of the image data. The optical relay system provides illumination light to the DMD for modulating to obtain projection light required for a projection image. The adjusting member reduces the luminous flux of the illumination light provided to the DMD when the grayscale values of the pixels of the image data are increased. A reduction ratio of the luminous flux of the illumination light matches an increase ratio of the grayscale values of the image data. The DMD modulates the adjusted illumination light according to the image data with increased grayscale values to generate the projection light required for the projection image.

Abstract: The present disclosure provides a battery module, including a first battery cell arrangement structure, a second battery cell arrangement structure and a bus bar array. With battery cells stacked in a horizontal direction, a first battery cell arrangement structure and a second battery cell arrangement structure are stacked in a vertical direction, and a first bus bar of a bus bar array is used to sequentially connect the battery cells of the first battery cell arrangement structure and the second battery cell arrangement structure. As a result, a total positive electrode and a total negative electrode of a battery module are located at two ends of the battery module, which greatly reduces the possibility of a short circuit of the battery module and improves the safety of the battery module.

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: The present disclosure provides a battery module and a battery pack. The battery pack comprises a box and a battery module, the battery module is accommodated in the box. The battery module comprises batteries sequentially arranged in a first direction. The battery comprises an electrode assembly, a case and a cap assembly, the electrode assembly is received in the case, and the cap assembly is connected with the case. The case comprises two first side walls, and the two first side walls are respectively positioned at two sides of the electrode assembly in the first direction. The first side walls of two adjacent batteries face each other. An area of the first side wall is defined as S1, a distance between the electrode assemblies of two adjacent batteries in the first direction is defined as D, S1 and D satisfying a relationship: 1.2×10?5 mm?1?D/S1?500×10?5 mm?1.

Abstract: Disclosed are a secondary battery, a battery module and an electric vehicle. The secondary battery includes an electrode assembly, a housing and a top cover assembly. The housing has an accommodating chamber, the accommodating chamber having an opening, and the electrode assembly being accommodated in the accommodating chamber. The electrode assembly includes a plurality of electrode units, the plurality of electrode units being stacked in an axial direction of the accommodating chamber. The top cover assembly includes a top cover plate, a first electrode terminal and a second electrode terminal, the top cover plate being connected to the housing and located on a side of the electrode assembly in the axial direction, and the first electrode terminal and the second electrode terminal both protruding from the top cover plate and being electrically connected to the electrode assembly.

Abstract: The present disclosure provides a battery pack and a vehicle. The battery pack comprises a battery module, a box assembly and a first adhesive member. The battery module comprises first batteries arranged sequentially in a horizontal direction. The first battery comprises an electrode assembly and a case, and the electrode assembly is received in the case. The electrode assembly comprises a first electrode plate, a second electrode plate and a separator. The box assembly has a connection portion, and the connection portion is positioned at a side of the battery module in the vertical direction. An outer surface of the case comprises a first surface, and the first surface is connected with the connection portion via the first adhesive member. An area A of the first surface and an elastic modulus B of the first adhesive member satisfy a relationship: 0.02 cm2/MPa?A/B?9 cm2/MPa.

Abstract: Disclosed are a secondary battery, a battery module and an electric vehicle. The battery module includes a plurality of secondary batteries arranged in sequence. The secondary battery includes an electrode assembly, a housing and a top cover assembly. The electrode assembly is accommodated in an accommodating chamber of the housing. The electrode assembly includes a plurality of electrode units, the plurality of electrode units being stacked in an axial direction of the accommodating chamber. The top cover assembly includes a top cover plate and an insulating member arranged on an inner side of the top cover plate, the top cover plate being connected to the housing, the insulating member being located on a side of the electrode assembly in the axial direction. A first buffer gap is provided between the insulating member and the top cover plate.

Abstract: A secondary battery and a battery unit is provided. The secondary battery includes: a housing including an accommodating hole with an opening; a top cover assembly connected to the housing in a sealed manner to cover and close the opening; an electrode assembly arranged in the accommodating hole, wherein the top cover assembly is spaced apart from the electrode assembly to form a first buffer gap for buffering the amount of expansion deformation of the electrode assembly in the axial direction. When the secondary battery expands, the first buffer gap can absorb the amount of expansion deformation to prevent the top cover assembly from being disconnected from the housing due to excessive stress, so as to reduce the possibility of failure of the secondary battery due to damage of the overall structure, thereby ensuring the structural integrity and the safety of the secondary battery.

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 display apparatus comprising a light source device, an image data processing module, a light modulation device, and an image synthesizing device. The light source device is configured to emit first light and second light. The image data processing module is configured to receive original image data of an image to be displayed, the original image data of the image to be displayed being image data based on a second color gamut range and comprising original control signal values of m colors of pixels, and the second color gamut range covers a first color gamut range and has a portion beyond the first color gamut range. The image data processing module further maps the original control signal values as m corrected control signal values and n control signal values.

Abstract: A projection screen, comprising a screen substrate and a plurality of light reflecting portions, wherein the light reflecting portion is arranged on an incident side of the screen substrate, and has a first surface and a second surface that face different directions, the first surface facing an incident direction of projection light, and the plurality of light reflecting portions are continuously arranged on the screen substrate to form a structure of sawtooth shape, wherein a light absorbing layer is provided on the second surface; and a wavelength-selection filter layer is provided on the first surface, and the wavelength-selection filter layer is configured to reflect the projection light and transmit and absorb at least part of ambient light.

Abstract: A projection system, comprising a light modulation device, a light source system and a light offset device. The light source system is used for emitting one or more illumination sub-beams. The light modulation device is used for modulating illumination light according to image data to form image light, the image light being used for displaying an image corresponding to the image data. The light offset device is used for transferring one illumination sub-beam to each zone of a micro-mirror unit by means of a time sequence such that the micro-mirror unit modulates the illumination sub-beam by means of a time sequence to form image light of a pixel corresponding to each zone, wherein each zone corresponds to one pixel of an image.

Abstract: The present disclosure relates to a secondary battery and a battery pack, and the secondary battery includes: an outer casing, comprising a case and a cap assembly connected to each other, the case is provided with an opening, the cap assembly includes a cap plate and an electrode terminal connected to the cap plate, wherein the cap plate is adapted to cover the opening; an electrode assembly accommodated in the case and including a main body and a tab extending out from the main body, wherein the tab is electrically connected to the electrode terminal; a vent connected to the outer casing; and an insulating member at least partially disposed between the electrode assembly and the vent, wherein a projection of the vent on the main body is at least partially covered by the insulating member.

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.