Abstract:This paper takes the floodlighting construction project of the Tianjin Global Financial Center as a case study.From the perspective of key technologies in the floodlighting of ultra-high-rise buildings with irregular curved surfaces,it analyzes the construction characteristics and challenges of such buildings,and provides a detailed introduction to installation techniques,safety assurance measures,and system control technologies.The approach ensured safe and efficient construction,achieved the expected lighting effects and control coordination,met the client's requirements,and gained industry recognition.The findings offer important references for similar projects and promote the advancement of floodlighting construction technologies for ultra-high-rise buildings.

Abstract:In 2025,the Stage,Film,and Television Lighting Professional Committee of the China Illuminating Engineering Society conducted on-site surveys of representative companies in stage equipment and engineering integration across five provinces and municipalities:Hubei,Hunan,Jiangxi,Shanghai,and Jiangsu.The survey focused on technologies including core functions of lighting network transmission and computation,intelligent rigging adaptable to various formats,underwater stage machinery and control systems,cultural tourism integration,simulation-based special effects generation,and multifunctional venue construction.By analyzing examples of technological innovation and engineering applications in stage,film,and cultural tourism performances,as well as their development trends,the study shares insights with the industry's demand side,user side,and manufacturing side,collectively promoting the progress and prosperity of China's stage and film lighting industry and advancing Chinese stage technology into the international market.

Abstract:Intelligent lighting is a crucial component in realizing smart buildings.The currently widely discussed inputs for intelligent lighting control include occupant presence sensing and real-time illuminance monitoring.Typically,real-time illuminance data are usually compared with preset illuminance thresholds and combined with occupant presence information to generate control outputs for switching lights on or off,achieving energy savings.Although this strategy attempts to mimic human control patterns,its performance in practical applications has been unsatisfactory.This study focuses on the thresholds corresponding to the environmental light triggering mechanisms for switching lights on or of,respectively.Through psychophysical experiments conducted under a reading scenario,the following conclusions were obtained:(1)The median illuminance threshold for environment-light-triggered switching on(i.e.,the switch-on threshold)is 212.65 lx,while the median illuminance threshold for switching off(i.e.,the switch-off threshold)is 472.75 lx,and the dispersion of the switch-off threshold is significantly greater than that of the switch-on threshold;(2)the initial illuminance level of the environment light change(decrease)significantly affects the switch-on threshold—the higher the initial illuminance,the higher the switch-on threshold—whereas the switch-off threshold is not affected;(3)the illuminance level of the controlled light significantly affects the switch-off threshold—the higher the illuminance of the controlled light,the higher the switch-off threshold—while the switch-on threshold is not affected.These results provide a scientific basis for intelligent lighting control strategies.

Abstract:In the context of accelerating global population aging,lighting environments—as a critical built environment factor influencing the mood,behavior,and health of the elderly—are increasingly drawing attention in age-friendly design.Given that international standards for lighting in elderly care facilities have not yet reached a unified conclusion,this study focuses on two typical reading media—printed materials and VDT—to systematically investigate the combined effects of illuminance(500lx/750lx/1000lx/1500lx)and color temperature(3500/4500K)on subjective evaluations,visual performance,and physiological responses of the elderly population.By controlling lighting parameters and media combinations,the study collected participants'subjective evaluations,reading rates,digital proofreading task scores,and multiple physiological indicators such as electrocardiogram(ECG),electrodermal activity(EDA),and electroencephalogram(EEG)under 16 different lighting conditions to assess the regulatory role of lighting conditions on reading performance.The results indicate that illuminance significantly affects both subjective and physiological indicators in paper-based reading,while color temperature and the interaction between color temperature and illuminance also significantly influence reading rate.In contrast,in VDT reading,illuminance significantly affects visual performance,while color temperature primarily influences physiological indicators.Based on the combined results of objective and subjective evaluations,a lighting condition of 1,000lx-3,500K is recommended for printed reading,with color temperature adjustable to 4500 K for specific visual tasks to enhance visual performance.For VDT reading,a condition of 1,000lx-4,500K is recommended;if circadian rhythm regulation is the primary objective,the color temperature should be appropriately reduced to 3,500K.These findings provide empirical evidence to guide lighting design in elderly care facilities.

Abstract:This paper investigates the structural characteristics of four types of bridges—beam bridges,arch bridges,cable-stayed bridges,and suspension bridges—and proposes differentiated lighting design strategies based on the enhancement of structural features.The relationship between structural systems and lighting expression is analyzed,and the effectiveness of the proposed design methods is verified through project practice.The results show that bridge lighting design should follow the principle of"light and shadow following the structure,"achieving visual expression of structural aesthetics through techniques such as precise light distribution and intelligent control,thereby providing theoretical support and practical guidance for improving the quality of bridge nightscapes.

Abstract:Taking the detection device of a fire engine elevating lighting system as the research object,this study addresses problems of current illuminance meters used in fire engine testing,such as the need for large open sites for testing and poor environmental adaptability.Through structural optimization design of the detection device,an integrated"angle-illuminance"detection device for fire engine elevating lighting systems was developed.The device mainly consists of three parts:an"angle detection unit,"an"illuminance detection unit,"and an"angle-illuminance data integration terminal,"enabling synchronous detection and real-time monitoring of luminaire angle and illuminance.The results show that the optimized detection device can perform illuminance testing of fire engine elevating lighting systems in small sites with long and narrow road sections.The angle detection resolution is 0.1°,and the illuminance detection resolution is 0.1 lx,with an error within±3%compared with currently used illuminance meters.In addition,the illuminance detection unit has an automatic leveling function,ensuring that testing can be smoothly completed even when the device is placed on uneven road surfaces.

Abstract:Under high-power operating conditions,stage lights are prone to shutter overheating and shortened service life.To address this issue,this paper proposes an efficient cooling solution based on the synergy of surface coatings and structural design.A high-reflectivity coating is applied to the light-incident surface of the shutter blade to reduce light absorption,while a high-emissivity heat-dissipation layer is designed on the back surface to enhance radiative heat dissipation.At the same time,a curved guiding mechanism is introduced to dynamically distribute the illuminated area on the shutter blade,avoiding long-term localized heating.Experimental and simulation results show that this scheme can reduce the overall temperature of the shutter blade by approximately 180℃and maintain stability during a 320 h aging test.The curved guiding structure further reduces local temperatures by 30～50℃,effectively slowing down thermal failure.The results provide a feasible approach and theoretical reference for efficient heat dissipation and long-lifetime applications of stage light shutters.

Abstract:Driver distraction is a critical factor affecting driving safety at night.With the rapid development of the urban nighttime economy,media facades,as dynamic display landscapes,have attracted widespread attention due to their significant impact on drivers.However,existing studies have not yet clearly identified the effects of nighttime media facades lighting parameters on driver distraction behavior.Therefore,based on a survey of the brightness and color data of media facades on 64 buildings in Chongqing,this study determined typical experimental scene parameters and investigated the effects of nighttime media facade brightness and colour on driver distraction behavior.Sixteen typical lighting scenarios were identified and combined with laboratory-based simulated driving experiments.Finally,the small-target reaction time and lapse points of 30 participants under the 16 lighting conditions were measured.The results show that multicolor media facades result in the longest small-target reaction time for drivers(517.23 ms),whereas white light produces the shortest reaction time(472.09 ms).Differences in brightness do not have a significant effect on distraction,but any bright condition is significantly higher than the non-lighting condition.The study indicates that color has a much greater impact on distraction than brightness:red and multicolor lighting have a stronger impact,while white or cyan lighting has a smaller impact.Brightness levels need to be coordinated with ambient lighting.This study provides a reference for evaluating the effects of brightness and color of nighttime media facades,ensuring nighttime road traffic safety,and supporting the formulation of future standards and design guidelines.

Abstract:Based on the 2025 survey conducted by the Stage,Film,and Television Lighting Professional Committee of the China Illuminating Engineering Society,this paper summarizes and synthesizes advancements in conventional fixtures,including improvements in light color and quality,application of intelligent color management technologies,light color calibration and fixture color gamut expansion,color temperature stability,enhanced color rendering,and light source consistency,as well as new technologies and concepts in special effects devices.

Abstract:In order to explore the relationship between the structural parameters of the collimating TIR lens and the light intensity and scattering angle,the response surface model is built with the structural parameters as the influencing factors and the light intensity and scattering angle as the response values.The results show that the response surface model has good significance,small variation and high fitting degree.For the prediction data,the maximum average percentage error of light intensity is 0.95%,and the maximum average percentage error of scattering angle is 1.06%,it has good engineering application value.

Abstract:To address the layout problem of a 26-color,544-LED packaged light source module for a color matching cabinet,this paper proposes a dispersed layout method based on a genetic algorithm,aiming to eliminate color ghosting in the color matching cabinet while improving correlated color temperature uniformity and illuminance uniformity.Using this method,a dispersed layout of the LED packaged devices was obtained.Compared with the linear layout,the dispersed layout exhibits no color ghosting.When the rectangular baffle opening width is 70 mm and the height is 260 mm,the mean chroma decreases from 14 to 6.9,the mean hue angle decreases from 111° to 64°,and the fluctuation range is smaller.The illuminance uniformity of all 22 colors is higher than that of the linear layout,with the mean value increasing from 89.0%to 92.8%.When synthesizing the D50 spectrum,the standard deviation of correlated color temperature decreases from 34 K to 10 K,and the illuminance uniformity reaches 92.8%.

Abstract:Visual field clarity is a key indicator for evaluating the quality of window views,and it is jointly influenced by the characteristics of shading measures,the attributes of the viewed content,and observer-related factors.Existing studies mostly focus on a single factor,while the combined effects of these three aspects lack systematic investigation and quantitative experimental validation.This study focuses on shading and window design from the perspective of visual field clarity,and establishes an experimental protocol that integrates objective visual function tests and subjective evaluations.It systematically assess the visual performance of three typical shading materials—window films,electrochromic glass,and fabric shading curtains—under various visible light transmittance(VLT)and color conditions.The experimental results demonstrate that shading materials have a significant impact on visual field clarity,and that VLT is the core parameter influencing visual performance,with high-VLT materials generally exhibiting better performance.This research provides quantitative evidence for architectural shading and window design,supporting a balance between shading efficiency and view quality.

Abstract:The period of the 14th Five-Year Plan represents a critical stage for the in-depth restructuring of both the technological roadmap and the standardization system of China's lighting industry.With LED light sources comprehensively replacing traditional light sources,the lighting standards system has undergone a systematic transition centered on LED technology,covering product scope,technical content,and structural framework,while standards for safety,performance,energy efficiency,and test methods have been updated in parallel.On this basis,through the streamlining and integration of mandatory national standards,the hierarchical structure of standards has become clearer and regulatory effectiveness has been significantly enhanced.Driven by the requirements of smart cities and digital applications,standards related to smart lighting have gradually taken shape,promoting the evolution of lighting systems from single lighting functions toward integrated capabilities in sensing,control,and information processing.At the same time,human-centric lighting standards have expanded from traditional requirements for visual comfort to non-visual effects such as photobiological safety and circadian rhythm regulation,and a preliminary quantitative technical evaluation framework has been established.In response to the"dual carbon"goals,lighting standards have further extended to areas including energy efficiency improvement,green design,and full life-cycle carbon footprint assessment of products,thereby strengthening standard support for the green and low-carbon development of the lighting industry.Meanwhile,the rapid growth of association standards has played a positive role in filling gaps in national standards and responding to emerging technologies;however,issues related to uneven quality have become increasingly evident,posing higher demands on coordination and governance within the standardization system.Overall,during the 14th Five-Year Plan period,the lighting standards system has advanced in a coordinated manner along the dimensions of intelligence,sustainability,and health,marking an accelerated transition from single-product specifications toward a comprehensive technical system that supports high-quality development and the realization of public value.

Abstract:Based on the 2025 survey conducted by the Stage,Film,and Television Lighting Professional Committee of the China Illuminating Engineering Society,this paper carried out on-site investigations of companies in stage lighting equipment,stage machinery,and engineering integration.It systematically examined each company's advancements and new approaches in technology development,R&D directions,production management processes,product application scenarios,and industry standards.Focusing on"the coordinated development of rigging and control systems under the large-scale application of stage and film lighting equipment,"this study analyzes the current state of the industry,explores development trends,and provides comprehensive assessments and specific recommendations,aiming to jointly promote technological progress and industry growth,and support the sustained prosperity of the cultural tourism market.

Abstract:With the rapid development of LED technology,the capability for spatial optical and color control has been significantly enhanced.However,traditional optical software is limited by accuracy and simulation speed and cannot precisely simulate subtle optical and color differences,which has become one of the urgent problems to be solved in the field of high-precision optical simulation.This paper focuses on the key role of near-field testing in the study of the spatial optical and color characteristics of white LEDs.By capturing LED light source data using multi-angle imaging colorimeters and spectrometers,the synergistic effect between blue LED chips and phosphors in the emission mechanism of white LEDs,as well as the complexity of optical non-uniformity issues,is briefly introduced.The importance of spatial optical and color characteristic testing in addressing LED color non-uniformity and in the field of high-precision optical simulation is analyzed.Optical simulation verification is carried out using a new generation of high-precision optical software.The results show that the technical approach combining high-precision testing and high-precision simulation can effectively reproduce"subtle"optical and color differences that cannot be captured by traditional simulation software.

Abstract:To address the industry challenges of traditional metal heat sinks being heavy and costly,and plastic heat sinks having insufficient thermal conductivity,this paper proposes an aluminum-plate-reinforced thermally conductive plastic composite heat sink(hereafter referred to as plastic-clad aluminum heat sink)design.Using finite element simulation combined with Box-Behnken experimental design within the response surface methodology(RSM),the effects of fin thickness,number,height,and embedded aluminum plate thickness on maximum junction temperature and heat sink mass were systematically analyzed,and a multi-objective optimization model was established.The NSGA-II multi-objective genetic algorithm coupled with the entropy weight TOPSIS decision method was applied to construct a comprehensive parameter selection system for the heat sink.Experimental results show that under high-power automotive lamp conditions,the optimized heat sink maintains LED junction temperatures at 74.19℃,with thermal performance approaching that of metal aluminum heat sinks;its mass is only 119.38 g(measured 120.00 g),representing a 60.85%reduction compared with the initial all-aluminum design,achieving a synergistic optimization of thermal efficiency and lightweight performance.Compared with traditional studies that focus on low-power LED modules,this plastic-aluminum composite structure innovatively addresses the thermal management challenges of thermally conductive plastic heat sinks in high-power automotive lighting scenarios,providing an engineering reference for efficient thermal design and lightweight development in smart lighting systems.

Abstract:To address the problem that building elevator buttons are easily contaminated with pathogens and cause cross-infection,this study adopts AlGaN-based deep ultraviolet LED technology for rapid sterilization and disinfection.According to the shape of the elevator panel,a unique disinfection device structure was designed,and an intelligent infrared sensing timed sterilization circuit was constructed based on practical application scenarios.The system can perform sterilization immediately after a person touches the button and automatically stop sterilization after a certain period of time.Through optical simulation,the scheme was optimized,and the optimal parameters of the core deep ultraviolet LED devices(including the number of light sources,emission angle,spacing between LED beads,inclination angle of the light source board,and optical power,etc.)were determined,thereby improving the irradiation intensity of the disinfection device and reducing disinfection time.Finally,prototype development verified that the device functions meet the requirements of intelligent control design,the measured irradiation intensity values are close to the simulation data,and simulated on-site surface disinfection tests as well as on-site surface disinfection experiments were conducted.The results show that with a preset sterilization time of 15 s,the device can achieve a 99.9%sterilization rate against Escherichia coli and Staphylococcus aureus,and up to a 90%sterilization rate against natural bacteria.This scheme can be promoted as a reference case for application in different object surface disinfection scenarios.

Abstract:Based on the 2025 survey conducted by the Stage,Film,and Television Lighting Professional Committee of the China Illuminating Engineering Society,this paper systematically reviews new technologies and products of intelligent lights in China.Using a three-dimensional research approach of"thematic reports+field inspections+performance measurements,"it focuses on analyzing innovations and development trends in light color and efficacy,performance functions,laser technology,scene applications,and intelligent upgrades,providing a reference for industry technological advancement and industrial upgrading.

Abstract:While shaping the skyline of modern cities,glass curtain walls also cause reflected glare pollution,which has negative impacts on the urban environment and residents'visual comfort.Current simulation methods for the reflected light of glass curtain walls are mostly based on the Boundary of Reflection Area(BRA)theory.These methods have limited analysis efficiency develops when addressing the impact of reflected light in complex environments.This study develops a simulation method suitable for complex urban morphologies based on the ray-tracing algorithm.The method allows for quantitative analysis of the influence range and duration of reflected light at different times,as well as residence range of fight spots in specific visually affected areas.At present,research on the reflected light of glass curtain walls are mainly focused on mid-to-high latitude regions,and quantitative simulation methods suitable for complex urban forms in low-latitude areas remain scarce.This study simulates and analyzes the characteristics of reflected light from glass curtain walls in low-latitude regions.It analyzes the effects of glass curtain wall materials,orientations,morphologies,and shading components on reflected light,and summarizes technical approaches to reduce the intensity of reflected light.On this basis,the method is applied to evaluate the reflected light performance of glass curtain walls on five newly-built super high-rise buildings in Sanya.It clarifies the potential glare influence range and duration of the project,and puts forward targeted prevention and control suggestions.This study can provide an analytical method and practical reference for light pollution control glass curtain walls in low-latitude regions.

Abstract:By analyzing the definition and calculation methods of energy-saving indicators for road lighting,the influencing factors of energy-saving indicators are analyzed.The energy consumption differences between high-pressure sodium lamps and LED street lamps are quantitatively studied,and different LED street lamps are selected for application in typical road scenarios.The influences of luminous efficacy,photometric type,and layout method on energy consumption are analyzed and discussed.Measures to improve the energy-saving level of LED road lighting are studied,and the recommended values of power density for LED road lighting are proposed.