What are the principles and key points of school lighting design?

What are the principles and key points of school lighting design?**Principles**- **Functionality Principle**: Meet the lighting requirements of different places in the school. For example, in classrooms, it should ensure that students can clearly see the blackboard and textbooks. In the library, it should provide suitable light for reading and searching for materials. In corridors and staircases, it should ensure the safe passage of pedestrians.- **Comfort Principle**: The lighting should be soft and uniform, avoiding glare and shadows, reducing the visual fatigue of students and teaching staff, and creating a comfortable learning and working environment.- **Safety Principle**: The lighting system should be safe and reliable, conforming to relevant electrical safety standards. The lamps should be installed firmly to prevent safety accidents caused by lamp failures. At the same time, emergency lighting facilities should be provided to deal with situations such as sudden power outages.- **Energy Conservation Principle**: On the premise of meeting the lighting requirements, give priority to the selection of energy-saving lamps and intelligent control systems to reduce energy consumption, save operation costs, and achieve green lighting.- **Aesthetics Principle**: The lighting design should be coordinated with the overall architectural style and environment of the school. Through reasonable selection and arrangement of lamps, create a beautiful and comfortable campus atmosphere.**Key Points**- **Classroom Lighting**    - **Desktop Illuminance**: The average illuminance value of the desk surface should not be lower than 300lx, and the illuminance uniformity should not be lower than 0.7. The average illuminance of the blackboard surface should not be lower than 500lx, and the illuminance uniformity should not be lower than 0.8.    - **Lamp Arrangement**: Use batwing-type light distribution lamps to reduce glare. The lamps should be arranged perpendicular to the blackboard, and the distance from the blackboard is 0.7 - 1m. At the same time, ensure that the light in the classroom is uniform and avoid uneven light and dark.    - **Light Source Selection**: Give priority to fluorescent lamps or LED lamps with a color temperature of 4000 - 5000K, and the color rendering index Ra should not be lower than 80 to provide lighting effects close to natural light, which is beneficial to the protection of students' eyesight and the improvement of learning efficiency.- **Library Lighting**    - **Reading Area**: The illuminance is generally 300 - 500lx, requiring soft and uniform light and avoiding glare. A combination of indirect lighting and local lighting can be used. For example, install hidden light strips above the bookshelves to provide overall uniform basic lighting, and at the same time, set adjustable-angle table lamps on the reading desks to meet personalized reading needs.    - **Bookshelf Area**: The illuminance should not be too high, generally 150 - 300lx, to avoid direct light affecting the search for books. The lamps can be installed on the side or top of the bookshelves, and lamps with a narrow beam angle can be used to project the light onto the bookshelves to ensure that the book labels are clearly visible.- **Gymnasium Lighting**    - **Competition Venue**: According to the type and level of the competition, the illuminance requirement is relatively high, generally between 1000 - 2000lx. The lamps should use high-brightness and high-efficiency metal halide lamps or LED lamps. Through reasonable optical design, the light is evenly distributed in the venue to avoid shadows and glare to meet the visual needs of athletes and spectators.    - **Audience Area**: The illuminance is relatively low, generally 100 - 300lx, mainly to ensure that the audience can see the competition venue and the passage clearly. Pendant lamps or wall lamps can be used for lighting, and the arrangement of the lamps should avoid interfering with the sight of the audience.- **Corridor and Staircase Lighting**    - **Illuminance Requirement**: The average illuminance of the corridor and staircase is generally 50 - 100lx to ensure the safe passage of pedestrians. In the staircase, ensure that each step has sufficient light and avoid shadows.    - **Lamp Selection**: Select waterproof and dustproof lamps, such as ceiling lamps, wall lamps, etc. The installation position of the lamps should be reasonable to avoid being blocked by objects, and at the same time, consider the convenience of maintenance and replacement.    - **Emergency Lighting**: Set up emergency lighting lamps, use lamps with built-in batteries or centralized emergency power supply systems to ensure that emergency lighting can be provided for at least 30 minutes in case of power outages or other emergencies.- **Campus Landscape Lighting**    - **Lighting Purpose**: Highlight the landscape features of the campus and create a comfortable and pleasant campus environment. The iconic buildings, sculptures, gardens, trees, etc. of the campus can be illuminated by light to show the cultural heritage and artistic atmosphere of the campus.    - **Lamp Selection**: Select appropriate lamps according to different landscape elements, such as lawn lamps, buried lamps, floodlights, wall lamps, etc. The color and style of the lamps should be coordinated with the surrounding environment, and warm-toned lights can be used to create a warm atmosphere.    - **Lighting Control**: Use an intelligent lighting control system to automatically adjust the brightness and on-off status of the lights according to different time periods and scenarios. For example, during holidays or special events, special lighting effects can be set to increase the festive atmosphere of the campus.