Project Overview
This overview focuses on the runway facility of a renowned apparel enterprise as a case study. The facility features a main stage measuring 17 meters in width and 4.8 meters in depth, with a runway (catwalk) measuring 4 meters in width and 22 meters in depth, all situated within a space with a ceiling height of 6 meters. Designed to serve as a venue for showcasing fashion design concepts and hosting promotional events, the completed facility will accommodate a diverse range of activities—including various types of fashion shows, product launches, live performances, and film shoots. In terms of functional utility, the venue is equipped to host large-scale fashion shows, major theatrical productions, concerts, dance performances, variety galas, conferences, and similar events; furthermore, it possesses all the fundamental technical prerequisites for live television broadcasting and filming.
The runway lighting system is configured to operate in two distinct modes: one dedicated to runway fashion shows, and the other adapted for multi-functional stage variety performances. The runway lighting mode is primarily designed to illuminate models as they walk the catwalk; it comprises three distinct lighting groups:
I. Front lighting for models emerging from the main stage, positioned at a 45-degree angle to illuminate their faces without casting shadows or "dark spots."
II. Front lighting for models returning to the main stage, similarly positioned at a 45-degree angle to illuminate their faces without casting shadows.
III. General stage front lighting, positioned at a 45-degree angle to ensure comprehensive, even illumination across the entire stage area.
The runway lighting system is simultaneously utilized to provide general ambient illumination during variety performances. The lighting setup for stage variety performances incorporates a range of fixtures—including profile spotlights, LED front lights, LED wash lights, and intelligent moving-head lights capable of projecting patterns and color washes. For these performances, the general stage illumination provided by the runway lighting system serves as a foundational base layer, while specialized effect lighting fixtures are employed to enhance the overall artistic and visual impact of the stage production. III. Design Description:

Design Basis
 JGJ-57-2000/J67-2001 *Code for Design of Theater Buildings*
 GB/T50314-2000 *Standard for Design of Intelligent Buildings*
 JGJ/T16-92 *Code for Electrical Design of Civil Buildings*
 WH-0204-1999 *Testing and Evaluation of Optical Quality of Stage Lighting Fixtures*
 GB7000.14-2000 *Safety Requirements for Ventilated Lighting Fixtures*
 GB/T50311-2000 *Code for Design of Integrated Cabling Engineering for Buildings and Building Complexes*
 GB/T50312-2000 *Code for Acceptance of Integrated Cabling System Engineering for Buildings and Building Complexes*
 GB50259-96 *Code for Construction and Acceptance of Electrical Lighting Installations in Electrical Installation Engineering*
 GB50169-92 *Code for Acceptance of Construction Quality of Grounding Devices in Electrical Installation Engineering*
 GBJ54-83 *Code for Design of Low-Voltage Power Distribution Devices and Lines*
 GB50052-95 *Code for Design of Power Supply and Distribution Systems*
 GB50054-95 *Code for Design of Low-Voltage Power Distribution*
 GB50034-2004 *Standard for Lighting Design of Buildings*
 JGJ/T16-92 *Code for Electrical Design of Civil Buildings*
 GB15734-1995 Limits and Methods of Measurement of Radio Disturbance Characteristics of Electronic Dimming Equipment

Design Principles
The T-shaped stage lighting system is designed in strict accordance with the concepts of reliability, high quality, advanced technology, flexibility, and comprehensiveness. During the system design process, key equipment is selected from advanced domestic products; the overall solution fully utilizes the latest research findings and design concepts, and adheres to the following design principles:

(I) Advanced Nature, Scientific Soundness, and Economic Efficiency of the System
The configuration of the T-shaped stage lighting system is characterized by: advanced technology, scientific system structure, stability and reliability, powerful functionality, user-friendliness, and ease of maintenance.

1. **Advanced Nature**
In the design of the stage lighting system, full consideration has been given to the future requirements for continuous technological development and upgrades, as well as the system's scalability and compatibility. The aim is to accommodate future lighting expansion and technical upgrades—necessitated, for instance, by an increase in performance scale—with minimal or no need for additional hardware. The advanced technologies employed include:
 Computerized control consoles featuring powerful control, editing, and expansion capabilities;
 Stable and reliable intelligent dimming racks;
 Advanced 3D lighting design assistance and simulation software;
 Renowned domestic professional stage fixtures, including both conventional luminaires and intelligent effects lighting.
2. **Scientific Rigor**
The "T-type" lighting network control system is designed around the standard DMX512 signal protocol. This scientific approach ensures that control signals are delivered directly to every controlled point, endowing the stage lighting system with excellent potential for future growth and an open architecture. This design facilitates high-speed, efficient signal transmission, system expansion, and continuous technological upgrades, ensuring that the entire lighting system possesses not only technological sophistication but also a foundation of scientific rigor.
3. **Economic Efficiency**
Throughout the design process, factors related to operational management and running costs have been integrated into every stage. The system utilizes equipment that is technologically advanced, energy-efficient, and environmentally friendly—specifically, a significant number of low-power LED light sources and long-life halogen-tungsten fixtures. These components are characterized by high efficiency, low energy consumption, high brightness, low heat emission, and extended service life. Concurrently, the design establishes a modern hardware platform for stage management, thereby facilitating the achievement of operational goals characterized by high efficiency and low cost.

(II) **System Integrity and Practicality**
The technical design of the stage lighting system represents a complete departure from traditional design paradigms. It integrates and incorporates the spatial transformation forms and characteristics of modern lighting art, creating a unified and comprehensive solution—in terms of both two-dimensional layout and three-dimensional structure—capable of accommodating a wide variety of lighting design schemes. Furthermore, the design incorporates numerous well-defined interfaces. These interfaces are engineered not to impede the progress or expansion of the overall design scheme, but rather to specifically address several potential issues that the stage lighting system may encounter during its operational lifecycle:
 The continuous need for equipment updates within the lighting system (i.e., ensuring sufficient scope and depth for sustainable development);
 The need to continuously meet the evolving requirements of diverse performance genres (i.e., overcoming potential limitations inherent in two-dimensional layouts and three-dimensional spaces).
This commitment to integrity is fully manifested in the realization of the lighting system's functional capabilities, the configuration of lighting equipment, the interconnection of disparate devices, and the compatibility of signal transmission formats.

(III) System Scalability and Sustainability
The networked lighting system designed in this proposal serves as an open platform; its architecture fully anticipates the sustainable upgrading and evolution of both hardware and software in the future. The entire lighting system design—including equipment configuration and performance standards—is engineered to ensure the system's integrity. It incorporates multiple safeguards to guarantee stability and reliability, while also accommodating future system upgrade requirements.

(IV) Safety and Reliability
As the control hub of the lighting system, the dimming equipment—specifically its inherent stability and the reliability of the dimming control system—directly impacts the normal operation of the entire system and the overall quality of the performance. Therefore, the selection and configuration of stable and reliable dimming equipment constitute a fundamental prerequisite that must be prioritized.
 The system will feature DMX network input/output interfaces to ensure compatibility with—and allow for the connection of—lighting consoles, dimmer packs, and other equipment (both new and legacy models) from all major brands.
 All input/output (I/O) interfaces on the lighting control consoles are equipped with opto-isolation protection. Furthermore, all circuit boards within the lighting consoles and dimmer packs are manufactured using Surface Mount Technology (SMT).
 High-quality components are utilized for all signal interfaces, which also feature hot-swapping capabilities.

(V) Equipment Universality
The lighting control system is compatible with the following control signals: DMX512 and Ethernet. Network control operations adhere to either the ART-NET or ACN protocols. This ensures that the vast majority of digital equipment available globally—including digital control consoles, dimmer racks, intelligent lights, moving-head fixtures, scanners, and similar devices—can operate stably and seamlessly within this lighting system.
Design Rationale
Stage art is a multidisciplinary art form. Whether in the context of drama, music, dance, fashion shows, or general variety performances, a production requires not only playwrights, directors, actors, musical ensembles, and hosts, but also specialized departments covering art direction, stage machinery, set design, costumes, and props. The creative realization and presentation of these departments' work would be nearly impossible without lighting; conversely, even with lighting in place, poor lighting execution can directly undermine the effectiveness of the performance. Indeed, stage lighting can be aptly described as the very soul of stage art.
Much like other creative disciplines within the arts, lighting design cannot be pursued in isolation. Typically, it operates with the director as the central authority, employing various techniques—in accordance with the director's vision—to assist the actors in shaping their characters and enhancing their three-dimensional presence, thereby achieving the ultimate objective of highlighting the performance and accentuating the characters. Furthermore, the treatment of the style, mood, and atmosphere of the performance program—as well as the execution of stage scenery, props, costumes, and makeup—requires mutual collaboration, close coordination, and organic integration to achieve a unified and harmonious aesthetic.
To ensure that the lighting system design achieves its intended effects, it is essential not only to draw upon years of accumulated professional project design experience but also to utilize modern computer-aided design (CAD) tools. Integrating these tools into the design process allows for a more precise grasp and optimization of the proposed solution. These CAD tools include AutoCAD and specialized 3D lighting simulation software. CAD is widely applied across various industries; in this context, it is used to construct 3D architectural models, design lighting projection angles, and verify the logical placement of lighting fixtures.
Stage lighting fixtures constitute the final link in realizing stage lighting effects; consequently, the quality of the performance is directly influenced by the selection of these fixtures. Therefore, the fixtures we have selected for this configuration are all products from world-renowned brands. Specifically, the lighting equipment specified in this proposal is sourced from "Night Sun"—a leading domestic brand of professional stage lighting—and fully complies with all relevant national technical standards.
Color Rendering Index (Ra): > 92
Color Temperature (Standard Fixtures): 3050K ± 5%
Color Temperature (Other Fixtures): 5600K ± 5%
Illuminance (Runway/Catwalk): > 1000 LUX
Designed Lighting Circuits: 48 × 6kW dimming circuits. Additionally, a dedicated 50kW power supply for mobile performances has been established—located to the right of the main stage (within the audience area) and at the rear of the audience seating—to serve as an expansion capability for the lighting system circuits (with DMX512 interfaces routed to the Audio-Visual Control Room). Depending on the scale of a specific performance project, additional dimming circuits can be added by renting supplementary lighting equipment.
Lighting Layout Description
To accommodate the lighting requirements for both runway fashion shows and multi-functional variety stage performances, a total of 184 lighting fixtures are specified. The lighting fixtures are distributed as follows:
One circuit of *Front Light* for the main stage, serving as general illumination for the stage front; 16 LED profile spotlights are positioned at the front light stations.
One circuit of *Top Light* for the main stage, serving as general illumination for the stage floor; 18 LED wash lights are positioned at the top light stations.
Two circuits of *Side Light* for the main stage, serving as general illumination for the stage sides and designed to enhance the three-dimensional presence of performers on stage; 5 beam lights are positioned at each of the left and right side light stations.
One circuit each of *Cycs* (Sky/Ground Row lights) for the main stage, serving as general illumination for the stage background; 12 units each of sky-row and ground-row lights are positioned at the respective stations.
At the entrance to the rear stage, one LED PAR light is positioned on both the left and right sides; these serve as basic illumination for models during their entrance and can also be utilized for strobe effects.
Six circuits of *Top Light* for the T-stage (catwalk), serving as primary overhead lighting while also functioning as supplementary front lighting; each circuit features 4 profile spotlights and 1 moving head pattern light, designed to add dynamic visual elements (such as color shifts and light movement) specifically for T-stage fashion shows.
Two circuits of *Side Light* for the T-stage—one on the left and one on the right—each comprising 21 profile spotlights and