The lighting design of the museum pays special attention to three aspects: the protection of exhibits; the visual presentation of exhibits and exhibition space; and other design, engineering and maintenance issues. Exhibit protection 1. Control infrared radiation and ultraviolet radiation Infrared and ultraviolet radiation from illumination is minimized by selecting a source that does not contain infrared or ultraviolet radiation, or by adding a lens that filters out infrared or ultraviolet radiation. 2. Limit illumination and annual exposure The light sensitivity of different categories of exhibits varies greatly. According to the "Museum Lighting Design Code" (the National Standard of the People's Republic of China GB/T 23863-2009), compare the lighting design specifications of other national museums, and select the illuminance and annual exposure standards that are suitable for specific projects. According to the standard, the exhibits are classified according to light sensitivity, and accordingly, the illumination and annual exposure limit values ​​for each exhibit are determined. Visual presentation of exhibits and exhibition space 1. Visual adaptation. In the spatial sequence before entering the exhibition hall, the brightness should be gradually lowered to a level lower than the brightness in the exhibition hall, or at least close to the brightness level in the exhibition hall. The brightness distribution in the exhibition hall has a great correlation with the planning of the exhibition and the design of the exhibition. For example, exhibitions by chronology and exhibitions by material, the distribution of brightness may vary greatly. An exhibition by chronology may put a piece of bronze and a piece of colored silk together. The illuminance limits of the two are very different (300lx and 50lx), which may cause an excessive brightness ratio in a field of view. Need to be resolved from the perspective of design or lighting design. Exhibitions made by materials, such as bronze exhibitions or silk exhibitions, may not encounter such problems. 2. Acquisition of exhibit data and spatial interface data. The lighting design should be a brightness design, which is a design that is aimed at intuitive visual results. To design the brightness, the shape and material data of the exhibit (such as 3D model, color, finish, reflectance), the shape and material data of the exhibition hall space and interface are all necessary prerequisites for lighting design. 3. The creation of the light environment atmosphere of the exhibition hall. The lighting of the museum, especially the lighting of the exhibition space, has different styles. The lighting style of the exhibition space is largely determined by the architectural style and style of the exhibition. The space and the way of exhibition may be a completely calm and objective background, or it may be a participatory narrative with a story-like role, and the lighting will adopt a corresponding way to form a corresponding style. In addition to coordinating the style of exhibition, it is another important function of lighting to reduce the fatigue of the exhibition by creating or changing the atmosphere of the light environment. The introduction of natural light, or the introduction of natural light impressions, has a very positive significance for the creation of a museum's light environment. Of course, the introduction of natural light must be effectively controlled to ensure that it does not harm the exhibits. 4. Lighting of the showcase. Due to the limitations of the interior space of the showcase, the selection, location and projection angle of the lamps in the showcase are greatly limited. If it is not possible to carry out the design and lighting design of the specific exhibits in a targeted manner, the lighting in the showcase is difficult to achieve the desired effect. For the purpose of exhibit protection or scene setting, the control of the lighting in the showcase may be incorporated into the control system of the entire exhibition hall. The control mode and wiring shall be considered as early as possible. The reflected glare on the glass surface of the showcase is another key factor affecting the lighting effect of the showcase. The use of low-reflection glass to control the brightness of the opposite side of the glass and the space (the viewer through the space) is an effective means of controlling the reflection of glare. When the glass surface of the showcase is opposite to other exhibits, it is very difficult to control the reflection glare. 5, to meet the flexibility of exhibition. Museum lighting should have some flexibility to accommodate the needs of exhibition adjustments and temporary exhibitions. Flexibility includes flexibility in power transfer locations, flexibility in illuminance distribution, and flexibility in controlling device setup (mainly the flexibility of sensing device setup). 6, glare control. The level of glare control has a decisive influence on the visual quality of the museum. Among the lighting of museums, glare generally consists of three categories: Direct glare, mainly the glare directly generated by the luminaire, such as seeing the illuminating surface of the luminaire in a normal field of view; One reflection glare is mainly caused by the glare generated by the virtual image of the illuminating surface of the luminaire. For example, the virtual image of the illuminating surface of the luminaire can be seen on the surface of the relatively smooth exhibit or the glass surface of the showcase, and the exhibit cannot be seen; Secondary reflection glare, that is, glare caused by the virtual image of the illuminated object, such as the virtual image of other exhibits on the glass surface of the showcase, can not see the exhibits in the showcase. By selecting luminaires and anti-glare accessories, direct glare can be eliminated or attenuated, such as selecting a luminaire with a deep light source, an anti-glare grille, a honeycomb, an angled visor, and the like. By controlling the projection angle, direct glare and primary reflection glare can be eliminated or attenuated, for example, the angle between the projection direction and the horizontal plane is greater than 60 °, so that the illumination of the luminaire has less influence on the normal field of view; The display cabinet and the like reflect the brightness of the face-to-face entity and the space (the viewer passing through the space), so that the brightness of the virtual image is lower than the brightness of the viewing object to eliminate the secondary reflection glare. heat shrinkable cap heat shrinkable cap,Heat-shrink tube,Heat shrinkable tubing,thermal contraction pipe,Shrink tube Mianyang Dongyao New Material Co. , https://www.mydyxc.com