People generally admire the exhibits that can enter the museum. When they visit, they always hope to observe as much as possible. Therefore, presenting the exhibits in all directions, clearly and truly showing the shape, texture, color, production process and other details of the exhibit is the central task of museum lighting design.
The exhibits in all aspects of the exhibition hall lighting need to be selected according to the characteristics of the exhibits. The two-dimensional exhibits require vertical illumination or horizontal illumination with uniform brightness to make the exhibits appear stably; the three-dimensional exhibits require the light to be illuminated from different angles, and by controlling the contrast ratio between the light-receiving surface and the backlight surface, the exhibits are full of three-dimensionality. . The specific method can be a combination of several concentrated lights, or a combination of diffused light and concentrated light.
In order to restore the true color of the exhibits, the light source is required to have excellent color rendering, and the color rendering index is generally greater than 90. The light with high color rendering index can truly represent the original appearance and color of historical artifacts, and the civilization left by the ancestors. Really presented to the audience, close the distance between the museum and the audience. LED lights, color rendering index of up to 95, can more realistically present the original appearance, texture, detail craftsmanship and color of the exhibits.
In the museum lighting, the exhibits displayed in each showroom are not the same. Different types of exhibits have different sensitivities due to their different materials and colors. Different exhibits need different light to achieve the best display effect. . Therefore, the general illumination of the showroom should be determined according to the type of exhibit. Selecting the appropriate illumination for the display can achieve good display results, as shown in the table below.
In the museum lighting design, any glare phenomenon will affect the audience's meticulous observation of the exhibits, as much as possible to eliminate the glare in the audience's view is the must for museum lighting design. Glare includes direct glare, reflected glare, and contrast glare. The use of anti-glare design luminaires can greatly reduce direct glare. In addition, for the direct glare generated by the light source, a method of controlling the incident angle of the light and adding a shutter to the luminaire can be adopted to eliminate the light directly incident on the viewer's eyes. In general, the 30° angle of incidence not only effectively avoids glare, but also helps shape the three-dimensionality of the three-dimensional exhibits, hence the name of the museum.
In the Expo Pavilion lighting, for the reflected glare generated by the glass showcase, it is calculated according to the relationship between the incident angle and the reflection angle to determine a non-light source reflection image area, and the light emitted by the light source is controlled in this area to ensure that there is substantially no reflection. Glare enters the eyes of the audience. Eliminate the reflection and shadow on the glass surface of the showcase. One is to adjust the illumination angle of the light source, and the other is to ensure that the ambient brightness is lower than the brightness in the showcase. Precise optics and illumination are designed to avoid contrast glare caused by uneven brightness distribution and mismanagement.
The anti-glare design and reasonable arrangement of LED lamps can greatly avoid the direct glare caused by direct illumination of the human eye, and the uniquely designed spotlight anti-glare ring and diffuser mirror make the beam less light, softer light and greatly reduce glare. The possibility of emergence; the deep tube design of the embedded downlight reduces the angle of the direct view light source, plus the anode surface treatment of the reflector, avoiding the generation of glare in the space, thus creating a harmonious and comfortable consumption atmosphere.
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