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How to judge the light quality of solar street lights

Update:04-06-2021
Abst:

The development process of lamps has mainly experienced […]

The development process of lamps has mainly experienced the evolution from incandescent lamps to LED energy-saving street lamps, and because of the green environmental protection, low glare, and no radiation of the LED light source, it has become the required light source for solar street lamps. How to judge the quality of the light source?

We can proceed from the following 3 aspects:

1. The shape of the light source

This is mainly to look at the shape of the light source projected on the plane, which is the most important and intuitive criterion for judging the quality of the light source of the lamp.

For high-quality solar street lights, the optical treatment is very particular. The reflector generally adopts the light distribution method of secondary light distribution-there are two reflectors, the first is the reflector for the entire light distribution, and the second is the reflector for the entire light distribution. The anti-glare reflector cup can make the light spot appear uniform and round, and the central light intensity is 30% higher than that of ordinary LEDs. The light spot presented by it should gradually blur from the inside to the outside, the peripheral light diffuses naturally, and the secondary light spot is well weakened, not obvious, the transition is very uniform, it looks very soft and comfortable, and there is no noise and dark spots. As for the LED light source with less uniform light distribution in the reflector, the quality is naturally not high. This kind of light source will have obvious dark spots and dark areas, the transition of the light spot is blunt and dazzling, and there are some noises and ghosts, and the secondary light spot is very Obviously, the lighting effect is not ideal, and human eyes will be very uncomfortable.

2. Whether the light source has glare

For outdoor lighting, once the halo phenomenon occurs, it will cause serious consequences. In addition to making people’s eyes uncomfortable, it may also reduce the visibility of visual objects, which is very dangerous. Generally speaking, the light source The higher the brightness, the more obvious the glare; the closer the light source is to the line of sight, the more obvious the glare. The larger the apparent area, the more the number of light sources, the more prominent the glare. Use the scientific secondary light distribution design. Secondly, the reflector must not use mirror design, with a little matte, or use new nano-coating technology to strengthen its anti-glare function. In order to ensure the effect, the lampshade also adds an anti-glare design. When purchasing non-transparent lampshades, pay attention to the design of these details to ensure the quality of the solar street lamp LED light source.

3. The color temperature of the light source

The color temperature of the light source is also an important point to consider. Too low or too high color temperature is not suitable. Too low color temperature presents warm colors. Although it will give people more warmth in terms of perception, such lighting effects are also easy It gives people a feeling of drowsiness, which is very dangerous for drivers who need to stay awake at all times.

If the color temperature is too high, the light will be too white. For the place illuminated by the light, the color reproduction will not be so true, which will bring visual discomfort, and it will easily give people a sense of tension and depression, which will bring trouble to the driver. Bright emotions are obviously not conducive to driving scenes. The color temperature is best to choose a neutral light close to natural light, which can restore the original color of the object very well, and will be very comfortable visually, and will not bring bad emotions to people, and it will be safer to drive at night.

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