Led color temperature: It is a key element of the quality of children's eye-protecting desk lamps. It is the unit of measurement that light gives people the feeling of cold and heat. The enterprise is k (Kelvin). The higher the LED color temperature, the colder the color of the light source, and the lower the LED color temperature, the warmer the color of the light source. The LED color temperature of the light source is in the middle of 1700-9300k. Suitable for reading articles, the LED color temperature of lighting fixtures is 4500-5500k.

Lumens: The total number of brightness transmitted by the luminous object per second, Enterprise: Lumens Lm. When the total area of the same category is the same, the brighter the luminous object, the higher its chromaticity. Illumination: Refers to the level at which the object is lit. It refers to the lumen value (lumens) of the object per square meter. Enterprise Lux (lux). The higher the illuminance, the brighter the surface of the object. The illuminance required by authoritative experts is 250 lux. Above.

Special effects: Special effects refer to the high efficiency of lighting, that is, how much light is emitted by the light source for each watt of electromagnetic energy. Enterprise: Lumens/W, the pursuit of perfect special effects and profit maximization is an eternal topic for discussion. It is a consideration. It is not a key criterion for environmental protection and energy saving. The higher the special effect, the higher the high efficiency of electric conversion of light, the more environmentally friendly and energy-saving. Light loss: After a long-term application of the lamp source, its chromaticity will gradually decline with the passage of time. This is the light loss. For the led lamp, the light loss is one of the key index values to measure its quality.

 Sunlight: Sunlight is also called sunlight, pure natural light. Sunlight is made up of the seven light sources of red, orange, yellow, green, blue, blue and purple. It can be seen directly by using a prism. It is suitable for mixing to produce sunlight, or close to the sunlight. This is the reason why professional reading articles, lighting fixtures and desk lamps should use three-primary fluorescent tube light. Human eyes grow, develop and evolve under the natural light source. Therefore, sunlight is a good source of light for human eyes. However, there are days and nights. It is reasonable to choose lighting sources that are close to the sunlight. Protect eyesight, prevent eye fatigue, myopia, and other eye problems.