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Design lighting effects and lighting calculation methods
Aug 01, 2018

Design lighting effects and lighting calculation methods

Lighting layout

There are three types of lighting layouts, namely basic lighting (environmental lighting), accent lighting and decorative lighting. Basic lighting is generally used in office spaces, while homes and some clothing stores use a combination of three. The specific lighting method depends on the scene. At present, several kinds of lighting methods are commonly used. According to the spatial distribution of the luminous flux of the lamps and the installation method of the lamps, the indoor lighting methods can be divided into five types:

1, direct lighting

Light is emitted through the luminaire, where 90%-100% of the luminous flux reaches the assumed working surface. This illumination is direct illumination. This kind of illumination has a strong contrast between light and dark, and can create interesting and vivid light and shadow effects, which can highlight the dominant position of the working surface in the whole environment, but due to the high brightness, glare should be prevented. Such as factories, general offices, etc.

2, semi-direct lighting

The semi-direct illumination method is that the lampshade made of translucent material covers the upper part of the light source, and 60%-90% of the light is concentrated to the working surface, and 10%-40% of the light is diffused by the translucent lampshade and diffused upward. The light is softer. This type of luminaire is often used for general lighting in lower rooms. Since the diffused light can illuminate the flat top, the height of the top of the room is increased, resulting in a higher sense of space.

3. Indirect illumination Indirect illumination is the illumination method of indirect light generated by shielding the light source. 90%-100% of the luminous flux is applied to the working surface through the ceiling or wall reflection, and less than 10% of the light directly illuminates the working surface. There are usually two methods of treatment. One is to install an opaque lampshade on the lower part of the bulb, and the light is reflected on the flat top or other objects to reflect indirect light. One is to set the bulb in the light trough, and the light is reflected from the flat top to the indoor. Indirect light. When this type of illumination is used alone, pay attention to the heavy shadows in the lower part of the opaque lampshade. It is usually used in conjunction with other lighting methods to achieve special artistic effects. Shopping malls, clothing stores, conference rooms, etc., generally use as ambient lighting or improve the brightness of the scene.

4, semi-indirect illumination semi-indirect illumination, just the opposite of semi-direct illumination, the translucent lampshade is installed in the lower part of the light source, more than 60% of the light is directed to the flat top, forming an indirect light source, 10%-40% part of the light passes through the lampshade Diffusion. This method can produce a special lighting effect, so that the lower room has a higher feeling. It is also suitable for small space parts in residential buildings, such as entrance halls, aisles, clothing stores, etc. It is usually best to use this lighting method in the learning environment.

5. Diffuse illumination method The diffuse illumination method uses the refraction function of the lamp to control the glare and spread the light to the surrounding area. There are two general forms of such illumination. One is that light is emitted from the upper opening of the lampshade through the flat top, both sides are diffused from the translucent cover, and the lower part is diffused from the grille. The other is to use a translucent lampshade to completely block the light to create a diffuse. This type of lighting has soft lighting and visual comfort for the bedroom.