39results about How to "Weaken the visual effect" patented technology

The invention discloses a naked eye light field 3D display system and method based on human eye tracking, electronic equipment and a storage medium. The naked eye light field 3D display system comprises a human eye tracking module, a data processing and transmission module, a 3D content generation and rendering module and a naked eye light field 3D display system. The human eye tracking module is used for positioning and tracking human eye positions in real time; the data processing and transmission module is used for carrying out filtering and prediction processing on the human eye position coordinates in real time; the 3D content generation and rendering module is used for generating and rendering 3D content of a corresponding position according to the obtained human eye position coordinates; and the naked eye light field 3D display system is used for receiving the data sent by the 3D content generation and rendering module and displaying 3D scenes at different viewing positions in real time. According to the invention, a user can experience a light field 3D effect without wearing any auxiliary equipment while high-resolution display content is brought, and more comfortable and natural naked-eye light field 3D experience is brought to the user.

The invention belongs to the technical field of image processing, and particularly relates to a non-uniform low-illumination image enhancement method and system. The method comprises the following steps: step 1, constructing a network model: constructing a non-uniform low-illumination image enhancement network model, wherein the model comprises a Retinex network, an illumination image enhancement network, a reflection image enhancement network and a multi-scale enhancement network; step 2, preparing a data set: dividing a training set and a test set by using an LOL-v1 data set, and preprocessing the training set and the test set; and performing fine adjustment on the model by the LOL-v2 data set. According to the invention, based on deep learning, an efficient two-way feature enhancement network is designed and is used for improving the performance of image features. On the basis of Retinex network decomposition, an input image is decomposed into an illumination image component and a reflection image component, and the characteristics and channel dimensions of the illumination image component and the reflection image component are modulated respectively, so that the characteristics of a low-illumination image are effectively enhanced. According to the method, the quality and definition of the image can be remarkably improved, and illumination and reflection details are brighter.

The invention provides a personalized passenger motion sickness relieving system and method based on a virtual reality technology. The system comprises virtual reality equipment, a sensor module, a physiological monitoring module and a data processing unit. The virtual reality equipment is used for generating a virtual scene synchronous with the movement of the vehicle and providing immersive experience; the sensor module collects vehicle motion data in real time, such as acceleration and angular velocity; the physiological monitoring module monitors the physiological state of a user and evaluates motion sickness symptoms; and the data processing unit integrates the vehicle motion data and the user physiological data, dynamically adjusts a virtual scene, and realizes personalized alleviation of motion sickness. According to the system, through personalized virtual scene selection, scene element adjustment, motion feedback personalized adjustment and automatic adjustment based on physiological feedback, the comfort level and experience of passengers are effectively improved, the motion sickness symptom is remarkably relieved, high expansibility is achieved, the system can be suitable for various vehicles, and the wide market requirement is met.

The invention belongs to the technical field of lunar exploration space, and particularly relates to a manned lunar rover driving operation platform. The platform comprises a central processing module, a main display screen, an operation panel, a foldable force feedback control module, an auxiliary control panel, a sensing module and a voice control module. A comfortable and intelligent driving operation space is created for a lunar rover driver, intelligent perception and panoramic display of the surrounding lunar surface environment are provided, the driving experience is optimized, and the reliability and safety of driving operation are guaranteed.

The invention relates to the field of intelligent tracking, and particularly discloses an intelligent health-care accompanying robot with a face tracking function, which performs image preprocessing and face feature analysis on a first user face image and a second user face image by using an image analysis and processing technology based on computer vision. In this way, screen pose data is intelligently adjusted according to a fine-grained global semantic compensation representation between the first user facial feature and the second user facial feature. The robot can intelligently adjust the screen posture by collecting the user face image in real time and analyzing the posture of the user face image, it is ensured that the robot is located at the optimal watching position of the user all the time, and the operation difficulty and visual fatigue are greatly reduced. In addition, the face orientation of the user can be tracked and adapted in real time through an intelligent automatic control mode, and more natural and smoother interaction experience is provided.

The utility model discloses a wave-shaped PTFE (Polytetrafluoroethylene) membrane structure for a building facade. The wave-shaped PTFE membrane structure comprises wave-shaped PTFE membrane structure units, the number of the wave-shaped PTFE film structure units is multiple, and the multiple wave-shaped PTFE film structure units are installed on the outer vertical face of a building in a multi-layer structure. The wave-shaped PTFE membrane structure units are of arc-shaped structures, and the wave-shaped PTFE membrane structure units on the same layer are sequentially connected to form a wave structure; and the wavy PTFE membrane structure units and the wavy PTFE membrane structure units on the adjacent layers are arranged in a staggered manner. The PTFE membrane structure is designed into a multi-layer structure, each layer of PTFE membrane structure is designed into a wave-shaped structure, the adjacent layers of wave-shaped PTFE membrane structures are arranged in a staggered mode, the visual effect of abutted seams is weakened in a wave-shaped modeling mode at the abutted seam positions of the PTFE membrane structures, modeling embodiment is highlighted, and aesthetic requirements are better met.

This invention relates to the field of measurement data analysis technology, specifically to an engineering measurement data analysis method and system based on image recognition. The method includes the following steps: using an industrial camera to identify structural edges, measurement markers, and calibration rulers to form a reference set of measurement point coordinates; establishing corresponding quantities of directional scales based on the calibration ruler direction; combining the displacement relationship of the measurement points to form a measurement point interval characterization set; determining the edge deviation reference rate; and finally forming a boundary positioning association result. This invention uses grayscale abrupt changes to define edges and construct measurement point positioning references; calculates the lateral and longitudinal displacements of the calibration ruler to extract corresponding directional scales; combines measurement point displacement and edge direction to form interval characterizations; analyzes the normal span and surface deviation state to form edge references; and combines the boundary extension orientation to define the associated segments of the arrangement trajectory. This reduces interference from manual interpretation, maintains consistency of multi-directional conversion benchmarks, controls the error accumulation process, and improves the coherence and stability of engineering monitoring data processing.

The invention relates to a display module and a display device, and the display module comprises a display panel which is located in a bending region and a non-bending region; the supporting structure is arranged on one side, in the thickness direction, of the display panel, the supporting structure comprises a first supporting layer and a second supporting layer, and the first supporting layer and the second supporting layer are adjacently arranged in the first direction; at least part of the first supporting layer is located in the bending area, and at least part of the second supporting layer is located in the non-bending area. According to the display module, at least part of the first supporting layer with high elastic modulus corresponds to the bending area, so that local reinforced support with high deformation resistance is provided for the bending area which is prone to collapse when the display module is in the unfolded state; and at least part of the second supporting layer with low elastic modulus corresponds to the non-bending area, so that a flexible buffer area easy to compress and deform is provided for the non-bending area needing to absorb material redundancy when the display module is in the bending state.

The invention provides a novel target and background contrast ratio measuring method, and belongs to the field of precise instrument manufacturing. When an image gray value is used for measuring the contrast ratio of a target and a background, imaging parameters of a detector and parameters of an optical system need to be calibrated, so that brightness information of the target and the background is truly reflected. The method comprises the following steps: respectively carrying out contrast measurement calibration on standard target plates with different contrast values under different illuminations by using a brightness meter, measuring the contrast values of the standard target plates by using an image gray value, fitting the contrast measured by the image gray value with the contrast measured by the brightness value in software by using a mathematical fitting algorithm, and calculating the contrast value of the standard target plates. The purpose of measuring the target background contrast value by using the image gray value is achieved. And establishing relational mapping between brightness and a gray value, defining a rule of a sampling sample, selecting a target and a background, and finally calculating a contrast ratio between the target and the background.

The invention belongs to the technical field of arc welding, and particularly relates to an arc welding gun which comprises a holding rod, a top connecting block fixedly arranged on the upper end face of the holding rod, a pushing outer frame fixedly arranged on the upper end face of the top connecting block, a welding rod pushing frame fixedly arranged on the upper end face of the pushing outer frame, and a fixed connecting frame fixedly connected between the lower end face of the pushing outer frame and the upper end face of the holding rod. According to the automatic welding device, the welding pushing block and the welding rod pushing rod slowly move leftwards, and a welding strip is slowly pushed to move leftwards, so that the welding strip can continuously descend along with loss and keep a constant welding distance; and therefore, the working requirement of the welding gun is lowered, the situation that the height of the welded welding plane is uneven is avoided, and the welding working quality is greatly improved.

The invention discloses an intelligent follow-up rotating cockpit system for port mobile machinery, and relates to the technical field of port mobile machinery cockpits, and the intelligent follow-up rotating cockpit system comprises a middle annular sliding rail mechanism and a flexible suspension frame mechanism which are fixed in a cockpit. The flexible suspension frame mechanism is in sliding connection with the annular sliding rail through an arc-shaped sliding plate, and a seat chassis and a seat are installed on the flexible suspension frame mechanism through a spring damping assembly. The annular sliding rail is further rotationally connected with a display screen, the main operation table and the auxiliary operation table are installed on a seat chassis, and the display screen and the seat achieve synchronous follow-up rotation through magnetic coupling. According to the system, a traditional ground rotating base is replaced with the middle annular sliding rail, and the structure is more compact; the flexible suspension frame provides multi-direction vibration reduction, and comfort is improved. According to the invention, the real-time consistency of the operation visual field and the control direction is realized, and the harbor machinery operation efficiency, the man-machine work efficiency adaptability and the long-term driving comfort are obviously improved.

This invention relates to a fast selection interaction method, apparatus, and electronic device for an electronic paper display, comprising: rendering and displaying an interactive interface containing multiple candidate options on an electronic paper display unit, wherein the interactive interface does not display a movable visual focus used to indicate the current candidate option; establishing a corresponding mapping relationship between each option in the multiple candidate options and each specific physical direction button, the mapping relationship being determined based on the spatial arrangement of each option in the interactive interface; responding to a detected trigger operation on a target physical direction button in a group of physical direction buttons, identifying the trigger operation as a selection operation on the option mapped to the target physical direction button according to the mapping relationship, and executing the subsequent logic corresponding to that option; during the process of the trigger operation being responded to and the subsequent logic being executed, interface refresh triggered by moving the movable visual focus is not performed. This invention can avoid frequent screen refreshes and operation delays caused by cursor movement.

The utility model belongs to the medical technology field, concretely is a kind of automatic identification drug liquid foreign matter device, including base, the bottom of base is provided with the wheel with self-locking;Connecting piece, the connecting piece includes the shaft rod rotationally connected with base and the connecting handle fixedly connected at the top end of shaft rod.The utility model in anti-skid lens of bearing prevents the sliding of medicine bottle, cooperate inner cavity illuminating lamp to assist medical staff preliminary identification luminous impurity in drug liquid with naked eye, without wearing tinted glasses, effectively reduce vision impairment and visual fatigue, solve the problem of heavy burden of existing technology with eye;Detection component is received by ultraviolet light source emission and spectrum sensor, compare with wavelength reference spectrum, can accurately judge tinted liquid or impurity difficult to distinguish with naked eye, improve detection accuracy;Realize the reciprocating lifting of detection component by lifting component, drive component drives detection component to rotate around medicine bottle, realize the multidirectional detection of detection component to medicine bottle, avoid impurity omission.

The invention relates to a system for controlling electronic equipment from a vehicle, comprising: at least one command device of the vehicle; at least one voice recognition device of the vehicle; a communication unit capable of establishing communication with the electronic equipment and exchanging data; a conversion device configured to transform, when a connection is established, the at least one command device into at least one means for commanding the electronic equipment; in response to the detection of a manual command by a first detection module, transmitting a first command instruction to the electronic equipment via the communication unit; in response to the detection of a voice command by a second detection module, transmitting a second command instruction to the electronic equipment via the communication unit.

The utility model relates to a spot lamp in a double-light-emitting mode. The spot lamp comprises a mounting base, a first light-emitting assembly and a second light-emitting assembly, wherein the first light-emitting assembly and the second light-emitting assembly are both arranged on the mounting base. The second light-emitting assembly is annular and sleeves the outer side of the first light-emitting assembly; a light reflecting plate is arranged between the first light-emitting assembly and the second light-emitting assembly. The end, away from the mounting base, of the light reflecting plate inclines towards the second light-emitting assembly. When the mounting base is mounted in place, the inclined surface of the light reflecting plate reflects light emitted by the second light emitting assembly to the periphery of the mounting base; the spotlight provided by the utility model can simultaneously give consideration to key lighting and the brightness of the surrounding environment, and has better practicability.

The present invention provides an antenna that takes into account both low transmission loss and visual recognition. The antenna has a transparent film substrate, an antenna element disposed on one of the two surfaces of the transparent film substrate, and a grounding portion disposed on the other of the two surfaces of the transparent film substrate. The antenna element and the grounding portion are composed of a mesh pattern formed by silver fine wires, and the line width of the fine wires is greater than 1.0 μm and less than 5.0 μm. The thickness of the transparent film substrate is greater than 30 μm and less than 300 μm.

The invention discloses a cultural heritage three-dimensional digital reconstruction display method and system, and relates to the technical field of computer vision, and the method comprises the steps: constructing a multi-dimensional radiation distribution data set containing an observation angle and radiation intensity; calculating a surface displacement rate and an observation angle conversion rate of the radiation peak value, and determining a highlight migration characteristic according to a ratio of the two; generating a mask and decoupling to generate an initial diffuse reflection texture and material parameter map; further performing orthogonal decomposition on the difference vector based on a reference illumination direction, and performing anisotropic compensation on the texture by using a vertical component to generate a target texture; rendering the initial three-dimensional geometric model according to the target texture and the material parameter map to generate a three-dimensional digital reconstruction model; through physical optical decoupling and vector compensation, the problems of dynamic highlight misjudgment and inherent texture loss are effectively solved, and high-fidelity three-dimensional digital reconstruction is realized.

The invention provides an adaptive SSMVEP-MI fusion brain-computer interface method and system based on eye movement tracking. The method comprises the following steps: determining a current effective fixation area of a user in real time through eye movement tracking; based on the region, only activating a corresponding local SSMVEP visual stimulation target, and generating associated specific motor imagery prompt information; electroencephalogram signals are synchronously collected, and SSMVEP features and MI features are extracted; self-adaptively selecting a decoding path according to whether the accumulated number of the MI effective samples with the labels reaches a threshold value or not: if not, independently decoding by using the SSMVEP features; if yes, fusion decoding based on signal quality evaluation is carried out on the bimodal features; and finally outputting a control signal to drive external equipment or update an interactive interface. According to the method, the visual interference is remarkably reduced, the recognition accuracy and the training efficiency at the initial stage of motor imagery are improved, and the robustness and the availability of the system are ensured through a dual adaptive mechanism of the sample number and the signal quality.

This invention relates to the field of mortar testing, specifically to a mortar consistency testing device for environmentally friendly mortar. It includes a lead screw slide with its output end fixed to a worktable. A cover is located beside the worktable, and a cone-shaped device coaxially and detachably holds the mortar. A vibration mechanism is located at the lower end of the cover. An infrared sensor is fixedly connected to the lead screw slide near the cover, and the infrared sensor is electrically connected to a controller. An electromagnet is fixedly connected to the lead screw slide below the sensor. A support is fixedly connected to the lead screw slide below the electromagnet, and an electric actuator is fixedly connected to the upper end of the support. A retaining ring is fixedly connected to the end of the support away from the lead screw slide, and a guide rod is coaxially connected to the retaining ring. A permanent magnet is fixedly connected to the upper end of the guide rod near the lead screw slide, and a cone-shaped device coaxially with the cone-shaped device is fixed to the lower end of the guide rod. During testing, the cone is filled with mortar and fixed coaxially with the cover cylinder. The vibration mechanism disperses the mortar. The screw slide and electric actuator adjust the position of the cone, and the electromagnet attracts the guide rod. After the power is cut off, the cone falls, the infrared sensor detects the displacement and transmits it to the controller to calculate the consistency, thus achieving accurate testing.

The patrol robot comprises a main body, a plurality of ultrasonic sensors, a panorama camera, a thermal image camera, a plurality of gas sensors and a UWB (Ultra Wideband) positioning following module, the main body comprises an upper assembly component and a moving component used for driving the upper assembly component to walk along the surface of a medium, and the moving component is used for driving the upper assembly component to move along the surface of the medium. The upper assembly component comprises an installation platform, an electric cabinet and an upper assembly shell, the ultrasonic sensors are fixed to the installation platform through front, rear, left and right installation supports respectively, the panorama camera is arranged on the upper side of the front portion of the upper assembly shell, the thermal image camera is arranged at the front end of the upper assembly shell, and a plurality of sensor fixing covers are arranged on the electric cabinet. The gas sensor is detachably mounted in the sensor fixing cover, and the UWB positioning following module is mounted in the upper mounting component. The patrol robot can replace human beings to carry out patrol operation, so that the personal safety of the human beings, especially police officers is guaranteed, and the patrol robot is diversified in function, reasonable in layout and suitable for autonomous patrol in various complex environments.

The invention belongs to the field of display brightness adjustment of an aviation airborne head-up display, and particularly relates to a manual-automatic integrated airborne head-up display brightness adjustment method, which comprises the following steps of: reading a real-time ambient light value through an ambient light sensor, acquiring a current gear value through a gear encoder, and adjusting the brightness of the airborne head-up display according to different ambient light values. Different brightness adjusting curves are constructed, and the brightness adjusting curves meet the requirement that the display brightness contrast ratio of the head-up display remains unchanged only when the ambient light changes; in the manual-automatic integrated mode, the manually adjustable brightness range is from the minimum brightness set by the head-up display to the maximum brightness, the maximum brightness adjusting space is provided for a pilot, and the pilot can more easily adjust the brightness of the head-up display to adapt to external ambient light through the gear encoder.

The invention relates to the technical field of airport monitoring, in particular to airport remote control tower multi-source information fusion monitoring equipment, which comprises a video monitoring module, a meteorological information module, a communication module, a data processing module and a display module, and is characterized in that the data processing module comprises an image enhancement module, a video splicing module, a target detection module and a data fusion module; the image enhancement module is used for enhancing images based on an improved multi-scale Retinex algorithm, the video stitching module is used for extracting feature points based on an SURF algorithm and stitching adjacent images, the target detection module is used for detecting targets in the images based on a YOLOv5 target detection algorithm, and the data fusion module is used for fusing multi-source data based on an improved random forest and inputting abnormal condition classification. According to the invention, through the multi-source information fusion and intelligent identification and tracking technology, the controller can master the operation condition of the airport more quickly and accurately, and the control efficiency is improved.

The present invention provides a method and system for personalized control of an in-vehicle display based on deep learning, which relates to the technical field of in-vehicle display control, including obtaining multi-dimensional data of a driver's state, and adaptively determining personalized configuration parameters of an in-vehicle display interface; obtaining the driver's historical preference data from a cloud knowledge base, generating an in-vehicle display optimization strategy based on driving scenarios and driver preferences, and generating a personalized in-vehicle display interface according to the in-vehicle display optimization strategy; obtaining the driver's visual behavior and human-computer interaction behavior, as well as subjective and objective feedback data on the personalized in-vehicle display interface, and continuously optimizing a state detection model and personalized display rules using an adaptive optimization algorithm, wherein the adaptive optimization algorithm uses the driver's subjective and objective feedback data as reward and punishment signals, updates weight parameters of the state detection model and personalized rules of a display template library, and realizes adaptive evolution of the in-vehicle display system.

The high-temperature disinfection device comprises a disinfection box, a box door is connected to the exterior of a box body of the disinfection box, a disinfection cavity is connected to the interior of the box body of the disinfection box, and an opening of the disinfection cavity corresponds to the box door; the material frame mechanism comprises rotating discs and material frames, the rotating discs are symmetrically arranged at the two ends of the interior of the disinfection cavity and are in sliding connection with the disinfection cavity, and the multiple material frames are connected between the two rotating discs in a hung mode; the flow guide mechanism is rotationally connected with the end, away from the box door, of the disinfection cavity, the conveying pipe is connected with the two rotating discs, and the outer portion of a pipe body, extending into the disinfection cavity, of the conveying pipe is connected with an exhaust flow guide plate; a frame body air inlet assembly is connected to a frame body of the material frame. The gas path system comprises a steam generator, an axial flow fan and a reversing valve. Even for medical apparatuses and instruments with complex structures, comprehensive and uniform sterilization and drying can be realized, and the treatment effect is far better than that of static disinfection equipment.

This application provides a collaborative interaction method, device, electronic device, computer-readable storage medium, and computer program product for virtual characters. The method includes: upon receiving a collaborative prompt message triggered by a first virtual character for a target collaborative action, and when a second virtual character enters a preset perception range, displaying multiple available collaborative spaces in a selectable state; in response to a crosshair aligning with a target space, updating the target space to a selected state and displaying an add control; in response to a trigger operation on the add control, controlling the second virtual character to perform a sub-action after joining the target space, and updating the target space to an occupied state; and in response to a synchronous display command received when all collaborative spaces are occupied, displaying the sub-actions performed by the first virtual character and the virtual characters joined in each collaborative space. This application improves the efficiency and flexibility of multi-person collaborative interaction.

This invention belongs to the field of multi-live-room synchronous live streaming technology, specifically involving a method for multi-live-room synchronous live streaming based on AI digital humans. The method includes: deploying a system template; constructing audience profiles and script templates; rendering seeds and initializing a lightweight ledger; performing edge deterministic rendering during live streaming; employing distributed ledger recording and local perception optimization; performing playback verification based on the ledger and frame records; quantifying business effects and conducting offline training. This invention can reduce the cross-node consistency of visual and audio-visual aspects of digital humans in multiple live-streaming rooms, thereby reducing the perceptual latency on the viewing end and improving the real-time viewing experience for the audience.

The utility model provides a nursing car, relates to nursing equipment technical field, including car body, vomit bucket and cleaning device, vomit bucket is provided in the car body, the upper part of car body is provided with vomit area, vomit bucket is provided just under vomit area; the cleaning device is fixedly connected with the trolley body, the cleaning device comprises a fixing frame, a disinfection structure and roll paper, the disinfection structure is fixedly connected with the fixing frame, the fixing frame is fixedly connected with the trolley body, and the roll paper is arranged on the disinfection structure in a sleeving mode. According to the nursing trolley, clinical nursing efficiency and safety are remarkably improved, hands or other parts in contact with vomitus of a patient can be cleaned and disinfected in time after the patient vomits, and the risk of cross infection is reduced.

The invention relates to the technical field of video transcoding, in particular to an intelligent distribution method and device based on CDN node dynamic video transcoding. Comprising the following steps that: terminal equipment reports context sensing information to a server, an edge node of a content distribution network CDN receives a video content request and the context sensing information, generates a transcoding strategy identifier, dynamically determines a video output parameter combination suitable for the video content request, and transmits the video output parameter combination to the server; and when the edge node queries that no transcoded video data corresponding to the transcoding strategy identifier exists in a local cache, a transcoding component is called to transcode the original video data stream in real time according to the video output parameter combination, and adaptive video stream data is generated. According to the invention, the transcoding decision and execution unit sinks to the edge node within one hop from the user, the image quality change is accurately matched with the network capability, smooth and smooth quality transition is realized, buffer pause and visual step brought by version jump are eliminated, and real seamless viewing is realized.

This invention relates to the field of arthroscopic technology and discloses an arthroscopic endoscope with assisted positioning function and its control method. The endoscope includes a guiding component and a control panel. The guiding component includes a rotating plate movably mounted inside a handheld block, protrusions movably mounted on the rotating plate, and a membrane layer fixedly mounted on one side of the handheld block. The control panel includes a pose acquisition module, a voice processing module, a marker management module, a guiding control module, a tactile feedback module, and a data storage module. This invention transforms abstract navigation information into orientation and pressure signals that can be perceived by the fingers in real time through the protrusions and membrane layer, enabling users to efficiently and accurately reposition the endoscope using only touch. Combined with a multimodal feedback system, it achieves precise marking and intelligent return of key points and automatically generates structured surgical records containing timestamps, images, poses, and voice, greatly improving surgical efficiency and medical safety.

The application relates to the technical field of semiconductor lighting, in particular to a full-spectrum high-color-rendering LED lamp bead. The lamp bead comprises an LED support, a blue light excitation chip, a red light enhancement chip, a multi-component fluorescent material system, a silicone encapsulation lens and a heat management structure. The blue light excitation chip and the red light enhancement chip are die-bonded on the LED support and form electrical connections with the positive and negative electrode pads respectively; the multi-component fluorescent material system is formed on the chip surface by adopting a partition coating process; the heat management structure comprises a high-thermal-conductivity ceramic substrate and a silver-plated copper alloy support frame. The application realizes full-spectrum coverage through the blue light excitation chip combined with the multi-component fluorescent material system, and simultaneously configures the red light enhancement chip to supplement the red light band energy, adopts an optimized partition coating process and a multi-layer fluorescent structure design, effectively controls the proportion of blue light overflow, and improves the light conversion efficiency. The lamp bead can significantly improve the general color rendering index Ra and the special color rendering index R9, realizes low blue light hazard, high luminous efficiency and good thermal stability.