The lights that can be seen everywhere, do you know how they emit light?
Jun 02, 2021
According to the light flux distribution ratio of the space of the upper and lower hemispheres, the lamps can be classified into the following five categories: direct lighting, semi-direct lighting, general diffuse lighting, semi-indirect lighting, and indirect lighting.
In order to be easy to learn and use, we also spelled it out. The diagram for you is as follows:
Direct lighting
Features: As long as the light is concentrated in the lower part, it is assumed that the working surface can get sufficient illumination.
Typical examples: downlights, desk lamps, etc.
Semi-direct lighting
Features: Most of the light is concentrated in the lower part. Assuming that the working surface can get proper illuminance, the space can also get a certain illuminance.
Typical examples: ceiling lamps, chandeliers, floor lamps, etc.
General diffuse lighting
Features: uniform illuminance in all directions in the space, soft light in the space, not easy to produce glare.
Typical examples: chandeliers, table lamps, bulbs, etc.
Semi-indirect lighting
Features: The upper space gets more illuminance, there is a certain amount of reflected light, and the space illuminance is more evenly distributed.
Typical examples: chandeliers, floor lamps, wall lamps, etc.
Indirect lighting
Features: The light is mainly concentrated on the upper part, and the light is uniform, which is often suitable for ambient lighting.
Typical examples: chandeliers, floor lamps, underground lamps, etc.
