Different light have different effects on health

- Oct 04, 2018 -

Different light sources have different effects on health



The health effects of lighting are not only the spectral components of the light source, but also the electromagnetic radiation, noise, glare of the light source or luminaire, the strobe of the light source, the safety of the luminaire, etc., so that the spectrum is harmful. Wavelength does not mean that it must have an adverse effect on health. In fact, these light sources have been associated with people's work and life for many years.


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The basic components of all illumination sources are red, green and blue. The influence of the blue part of the illumination source on the retina of the human eye has always existed and will always accompany human life. We only need to learn reasonable avoidance and scientific use. The harmfulness of blue light can be controlled within safe values.

Based on the full spectrum of professional-grade artificial light sources, we will provide you with scientific knowledge from a professional perspective, hoping to help you clearly understand the health effects of artificial light sources.



Health effects in the incandescent spectrum


1. Ultraviolet UV-A content is extremely low, and the effect of ultraviolet light on health can be ignored.

2. UV-B content is not available;

3, the blue component content is small, the stimulation to the eyes is small, and the blue light contained in the incandescent lamp spectrum is the safest in indoor lighting;

4, high near-infrared content, long-term lighting will lead to dry skin, easy to cause wrinkles; high temperature surface temperature is easy to burn.


High-intensity infrared rays can cause cataracts by directly illuminating the eyes for a long time. Because incandescent lamps have low luminous efficiency and high energy consumption, they have been phased out. From a health point of view, incandescent lamps have little effect.


Health effects in the spectrum of halogen lamps


1. Ultraviolet UV-A content is extremely low, and the effect of ultraviolet light on health can be ignored.

2. UV-B content is not available;

3, the blue component content is small, the stimulation to the eyes is small, and the blue light contained in the spectrum of the halogen lamp is safe in indoor lighting;

4, high near-infrared content, long-term lighting will lead to dry skin, easy to cause wrinkles; high temperature surface temperature is easy to burn.


High-intensity infrared rays can cause cataracts by directly illuminating the eyes for a long time. Due to the low luminous efficiency and high energy consumption of halogen lamps, they have been phased out. From a health perspective, halogen lamps are the least influential.

Health effects in the spectrum of LED lights


1. Ultraviolet UV-A content is extremely low, and its influence can be ignored.

2. UV-B content is not available;

3, blue light content is high, may cause retinal damage, blue light radiation with color temperature below 3500K is safer;

4. There is almost no near-infrared content, and it is not necessary to consider its influence.


LED white light is white light produced by a mixture of a blue light-emitting chip inside the lamp bead and a yellow phosphor covered on the chip.


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LED lighting sources have many advantages over traditional light source sources, and are the development direction of lighting sources. We have begun to enter the era of LED lighting, but if we do not pay attention to the influence of blue light on the human eye in LED lighting, it will cause "blue light hazard". Exceeding metal halide lamps and fluorescent lamps, high color temperature LED light sources will cause "blue light hazard" to be more serious. "Blue light hazard" is produced without any awareness in the lighting environment. Only under scientific use can safety be guaranteed; The source of light source needs to have this basic knowledge.

“Blue light hazard” is a public health issue. Product information should include these contents. The blue light radiation detection of LED illumination source is the only method for judging safety products. It should be noted that LED illumination source does not mean there must be “blue light hazard”, blue light. The amount of radiation and the time of radiation are the premise for judging the "blue light hazard".

The higher the power of LED lighting products, the higher the blue light hazard. Generally, the LED light source above 20W pays attention to the installation height when using. The higher the installation height, the smaller the blue light hazard.

The amount of blue light emitted by the LED illumination source decreases with the decrease of the color temperature. The low-power LED light source with the color temperature of 3500K-2800K basically conforms to the national standard. The white light with a color temperature above 6500K has the influence of blue light radiation. It is incredible that the LED lighting produced in China Light source, mostly high color temperature products;


With the increase of color rendering, the amount of blue light radiation decreases, and the increase in color rendering means that the phosphor needs to absorb more blue radiant energy to excite a wider spectrum. Therefore, a high color rendering index LED illumination source Relatively safe.


1. For commercial lighting, it is recommended to use LED white light with a color temperature below 6000K, up to a maximum of 6500K;

2. For office lighting, it is recommended to use a color temperature between 5000K and 3200K;

3. For home lighting, try to use LED lights with a single lamp power less than 8W, and the color temperature is below 3500K;

4. For LEDs for lighting, try to use products with high color rendering;

5. For reading desk lamps, it is best to use LED light source with high color rendering and color temperature below 3200K and the power is lower than 6W;