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          5 ways to teach you how to choose a good desk lamp
          Time: 2018-06-06

          I believe a lot of people have found that the age of myopia is getting lower and lower now. Children who have just entered kindergarten can wear a pair of big eyes. They feel lovable and pitiful. The reason is very simple, and many kinds of things, often watching mobile phones, playing games and improper use of the habit of using the eyes, but more important is that children in reading or writing homework, without the correct use of lighting results.
          Many people use table lamps, especially parents think that the brighter the lamp is, the better it is for children to read and write, but in fact it is not!
          Because brightness is not a standard for testing and measuring a desk lamp.
          To measure a qualified desk lamp, the most important thing is to choose a "eye protection", which meets the following requirements:
          1, low blue light
          In 2010, at the ARVO, Dr. Danny published an amazing survey of ophthalmologists: most of the lighting in the market contains "blue light" that has great damage to the eyeball. Long time reading under the harmful blue light can lead to myopia, computer syndrome, cataract and even blindness. "Blue light," doctors warn: "blue light" "The harm to the eyeball of children is more serious!"
          What is blue light?
          Blue light (HEV) is a high energy visible light, which directly penetrates the cornea and lens, reaches the yellow spot directly, accelerates the oxidation of the macular area, causes photochemical damage to the retina, and the blue light (HEV) hurts the children's retina more seriously, and the blue light (HEV) is nowhere to be found in the daily life, the sun and the sun. Tubes, computers and liquid crystal displays contain blue light (HEV). Therefore, blue light (HEV) has been proved to be the most hazardous visible light.
          If you are worried about the "blue light excess" of the LED lights or other appliances you buy, you can judge whether the blue light of the LED lamp is not overdose according to the People's Republic of China national standard GB/T 20145-2006 / CIE S 009/ E:2002 (light and light system's light biosecurity) - the standard gives a blue light in a specific space. The upper limit of the luminous flux at the angle.
          Generally speaking, more than 0.2 of Blu ray is regarded as high blue light.
          So when buying a lamp, you must choose a low blue light.
          2. No stroboscopic
          Stroboscopic is extremely easy to cause eye fatigue, dizziness, eye uncomfortable light symptoms, serious also may cause headache, vision loss and other problems.
          The most direct way to check whether there is a strobe is to open the camera to the light source. If there is no flash line on the screen, there is no flicker, and the flow of the dark line is happy so the more frequent.
          3. The light is soft.
          What is the soft light? In a flat day, the color temperature of the daylight we see is about 5600K, which is about the same as the direct sunlight at noon, but for desktop reading, it is high and white, so the eyes are very tired.
          The best light is 1-2 hours after sunrise, and the color temperature is between 4000 and 5000K. This color temperature range is comfortable and soft, and suitable for reading and writing. Generally speaking, if you want to choose a slightly higher color temperature in this range, you need to choose a relatively low color temperature.
          4, illuminance and illumination range
          Lamp intensity measurement: the center of light from the center of the read-write desktop height 400mm illumination at 750-1500 Lx is the best visual light environment. Generally speaking, only from the illuminance value, the lamp below 500LX is not qualified, its lighting brightness is low, and it can not be used as reading and writing lighting.
          The range of illumination is the area that we usually call the light of a table lamp. The average table lamp is usually about 55cm. The size of a magazine is far from enough for students to read or write. If the irradiation scope is too low, it is easy to lead to improper posture, causing hunchback and shortsightedness.
          Generally speaking, in order to create a comfortable and comfortable lighting environment for reading and writing, the light range of the table should not be less than two books, which ensures that the person can read and write at the most comfortable height.
          In terms of ergonomics, the light of the ring light source is most suitable for reading. The 16:9's light source distribution design is most suitable for the human eye's visual proportion.
          5, 3C certification
          National certification requirements: learning desk lamp must pass the national mandatory 3C certification, and within the validity period.
          Children are our future. We should learn to be rational when we care for our children. In fact, every child is born in a blank sheet of paper. What kind of environment do you create for him and what things he uses are imperceptibly affecting him. Please don't let our little neglect bring pain to our children's growth.
          So a good desk lamp can give children a good future. I think the lamp will not disappoint you.
          Tencent children's intelligent desk lamp
          A reading and writing light reading lamp for children and young students
          - - the following contents are long and patient to learn dry goods.
          Safety and environmental protection, far from light pollution
          The potential hazards of a lamp are: blue light, stroboscopic radiation and radiation. To know if there are such hazards, no authoritative inspection report is more direct.
          Stroboscopic test - 315 evening show us to use the camera function to test stroboscopic. Let us demonstrate the flicker situation of our children's intelligent table lamp for.
          The motion picture shows no flicker. The test shows that the frequency >3125Hz of the light output waveform of the Tencent children's intelligent desk lamp K8 is >3125Hz, which is exempt from the check class through the strobe authentication standard of the IEEE PAR-1789 (Electrical Electronics Engineer Society) standard.
          Three authoritative accreditation, respectively, from EN (EU) and IEC (