It is suggested to use "fluorescent lamp" because "fluorescent lamp" is the color closest to sunlight, that is, "daylight color". Don't believe in "eye protection" and "tricolor"!
Use fluorescent lamps for children's eyes.
Please adopt it if it is useful, thank you! !
Question 2: What kind of light source is good for eye protection desk lamp? At present, it is better to use LED for desk lamps, although it is still more expensive than energy-saving lamps or light bulbs, but it is worth the money: the selection of LED should have the following key points: first, look at the shape of LED light beads, which must be patch (that is, there are many square yellow spots on an aluminum substrate). If it is spherical light beads or several high-power light beads, discard it decisively, because those are old-fashioned and not good for eyes, but LED was used before. Use the mobile phone to test whether there is no strobe, turn on the camera and point it at the LED light source. If the screen does not flash, there is no strobe, and if it flashes, it will not work. See if it's bright enough. Generally speaking, 4W is already very bright, but it can meet the above requirements, and this is basically no problem. LED is the general trend: first of all, it saves much electricity than energy-saving lamps and light bulbs. Saving electricity means less heat, you know summer; Then there is the security issue. Led doesn't need glass and won't break. Both light bulbs and energy-saving lamps have this defect, and the fluorescent powder in energy-saving lamps is toxic, which makes people hurt and troublesome. Other benefits are secondary, and the most important ones are the above two. As for dimming table lamps, incandescent lamps were used to dim the light at first, and then energy-saving lamps were used to dim the light (the structure of energy-saving lamps was not suitable for dimming, and some styles were introduced later, which were relatively expensive and stable, even for big brands). Up to now, LED dimming is the same as incandescent lamp, with low voltage dimming and high voltage lighting (but LED needs DC voltage), so please see more answers for the current LED dimming table lamp price >>
Seek adoption
Question 3: What kind of lighting is good for protecting eyes? Generally speaking, when people are reading, the most commonly used lighting is fluorescent lamp, light bulb and yellow fluorescent lamp. In principle, readers should have a correct sitting posture and good reading habits; Then according to personal habits, no matter which color of light you choose, it will not cause great harm to your eyes. However, in contrast, fluorescent tubes are constantly flashing; This unstable flicker is far more than solar lamps and light bulbs. Just like watching TV, the picture is composed of many pictures, which are constantly connected and combined. The pupil of human eyes will tremble because of the factory flash, and it will continue to enlarge and shrink; So when reading a book, it is better to use a sun lamp or a light bulb. Duolaiming "Bright Duoduo" eye protection lamp adopts non-stroboscopic warm light technology, which is the most suitable three-color professional light-emitting tube with a color temperature of 5000 K. Soft warm light source, such as natural light at 10 in the morning, has stable brightness, uniform illumination and large area, making you look relaxed and comfortable, and eye protection is more obvious.
Question 4: What kind of light source is good for eye protection desk lamp? 1, incandescent lamp
Advantages: no blue light, high-frequency flash and little pollution.
Disadvantages: large radiation, large power consumption and high calorific value.
As a close-range lighting, the desk lamp is used for a long time because it is close to the head. Using incandescent lamp as light source, the most intuitive reaction is dry eyes and bloated mind, because it has high calorific value. )
2. Fluorescent lamps
Advantages: no blue light, high-frequency flash and high-frequency ballast.
Disadvantages: radiation, serious mercury pollution, unstable light source, high color temperature, easy to dazzle as close-range lighting.
(The stroboscopic flash produced by alternating current lighting alternating current electric lamp will also cause damage to the cornea and iris of human eyes, which will lead to fatigue and decreased vision, and also cause dizziness and other similar neurasthenia symptoms. )
3, LED eye protection desk lamp
Advantages: no strobe, no radiation, low energy consumption, mainly used for large-scale landscape lighting.
Disadvantages: the color spectrum of blue light and light is too narrow.
(It has blue light that can't be eliminated. The blue light component is too strong, which is easy to cause irreversible eye diseases and is not suitable for high-eye environment. )
4. DC eye protection lamp
Advantages: no blue light, no strobe, no radiation.
Disadvantages: high price, low popularity and single product.
5, vision coach light
Advantages: simulating natural light, uniform spectrum, high saturation, no stroboscopic, etc.
The dynamic light wave of natural light is loaded while providing illumination, so that the eyes unconsciously follow the light, thereby relieving eye fatigue, avoiding eye stiffness, improving eye vitality and achieving the purpose of eye health. )
Question 5: Is the old-fashioned light bulb suitable for 25w still under study? It is yellow. . . Led lamp is better than this one, which is eye protection. The brightness of a 25-watt light bulb is not so good. Although it is cheaper than led lamps, if it is a lamp with the same wattage, there are more than two LEDs.
Old light bulbs are suitable for frequent switching. If the number of switches is small, the led is more energy-saving and has a longer life.
From the point of view of protecting eyes, led is better.
Question 6: Which has the best eye protection effect, incandescent led lamp or energy-saving lamp? But choose the milky one where you can't see the beads inside.
Question 7: What kind of light source is good for eye protection desk lamp? First, expert analysis, as far as light source is concerned, the closer to sunlight, the more suitable for eye development. So the most eye-protecting light is actually natural light. Most of the "eye protection lamps" sold in the market are marketing concepts, and it is not sure whether they have the effect of "eye protection".
Second, DC lamps are aimed at stroboscopic phenomena. Later, someone invented the DC eye protection lamp. By changing alternating current into direct current and lighting it with direct current, it does not flash at all, so it is truly stroboscopic. Moreover, the light emitted during use is continuous, uniform and bright like natural light, but it is not dazzling at all, very soft, which greatly relieves visual fatigue and effectively avoids electromagnetic radiation. However, the technology of DC eye protection lamp is difficult, the cost is high and the price is definitely not low.
Thirdly, the vision coach lamp has recently attracted the interest of experts and scholars. The vision coach lamp not only provides illumination, but also loads dynamic light waves simulating natural light, so that users can make unconscious movements with the help of light when studying and working, effectively alleviating visual fatigue, improving eye vitality, and achieving the purpose of eye protection with its eyesight improving effect, from "passive eye protection" to "active eye protection".
Question: Which brand of led eye protection lamp is good? Before saying which brand of LED eye protection lamp is good, let's talk about seven points that should be paid attention to when choosing eye protection lamps:
Point 1: The irradiation range is wide enough.
Usually, the central illumination range of a desk lamp is only 30 cm, but the length of a 22-inch screen used in a family or office is 50 cm. When the desk lamp is used, the left side of the screen is bright, the right side is dark, and the lighting is not complete. Or the desktop is too big, the keyboard on the left is bright, and the book on the right is dark, so it is difficult to take into account the lighting. It is suggested to choose eye protection lamps with irradiation range greater than 60 cm, so that the irradiation range covers the main areas commonly used in desks.
Point 2: the light is even and sufficient.
The light is not uniform enough, which is easy to cause the screen to be bright and dark at one side, or bright in the middle and dark at both sides, forming glare, which is what we usually call reflection. Glare is very strong, which will be higher than the brightness of visible light that human eyes can bear. Strong light leads to accelerated glycolysis of retina, which is prone to eye fatigue, such as eye pain, scalp tension and other uncomfortable feelings, which will lead to long-term vision loss.
The third point: the eye protection lamp is smart enough.
When looking at the screen, the brightness of the surrounding environment is different, and the brightness of the eye protection lamp should be adjusted accordingly to meet the most suitable brightness at the scene. It is suggested to choose intelligent mode lamp, which can actively detect ambient light, adjust the brightness output in the central area and on both sides of the lamp, and solve the contrast glare caused by the difference between lamp, screen and ambient light. Intelligent mode can also set the color temperature to 4000K light source suitable for screen reading (confirmed by human factor lighting engineering specialty), and adjust the light source to the most comfortable color temperature suitable for screen reading.
The fourth point: the brightness and color temperature of the eye protection lamp can be adjusted.
Working in the daytime requires concentration and concentration, which requires cool colors, and working in the evening is suitable for warm colors. It is suggested to choose eye protection lamps with adjustable brightness and color temperature, so that the appropriate brightness and color temperature can be selected according to different working environments and conditions to provide the most suitable light for screen reading.
Fifth point: the light source is stable and does not strobe.
Frequency flash source is a very important cause of eye discomfort. It is suggested to choose LED eye protection lamp with non-stroboscopic driving chip, which is specially designed to stabilize the LED output light source, so that the light source is stable and does not flicker.
Sixth point: EU certification has no blue light hazard.
Light source is an important parameter and index for choosing eye protection lamps. For the sake of eye health, it is suggested that the eye protection lamp certified by IEC/EN6247 1 of the European Union should be truly free from blue light. Now everyone in the market claims that they don't have blue light, but they don't have formal proof. Therefore, we must see the certification of IEC/EN6247 1 of the European Union, which proves that there is no blue light hazard.
Seventh point: environmental protection is harmless.
The bulb of the desk lamp is hot, which will make the plastic lampshade emit some smells and cause harm to human body. It is suggested to choose a smaller power, which can save electricity and reduce heat dissipation. In addition, the use of special aluminum alloy in materials is also a good choice, which is light, tough and has good heat dissipation ability.
Therefore, eye protection lamps should not only have a wide illumination range, uniform light, no blue light hazard, no environmental hazard, adjustable brightness and color temperature, but also be intelligent. The most important thing is that the light source is stable and not stroboscopic.
Therefore, I recommend BenQ Wit LED eye protection lamp, 0 Flash, which was developed by BenQ in cooperation with many medical experts. Big brands are trustworthy! !
Question 9: What kind of eye protection lamp is the best for students? At present, it is generally not recommended to buy high-frequency eye protection lamps. The closer to natural light, the better. In addition, it's best to buy one that is illuminated by direct current. Because there will be no flicker and radiation of direct current. Now there is a multi-light DC eye protection lamp, which is not bad. It has a national patent number, so you can pay attention to it. But the price should be around 400 yuan.
Question 10: What kind of eye protection lamp is the best? Today's children are facing heavy academic pressure. Parents want their children to succeed in their studies, but they are worried that their children will suffer from myopia at a young age. Therefore, choosing an eye protection lamp has become a compulsory course for parents.
The interview found that there is no definition of eye protection lamp in the national standard. Many parents buy eye protection lamps under the promotion of merchants. Many parents don't know whether the lamp they bought can "protect their eyes".
Parents follow this concept.
"What kind of lamp do you recommend to me?" In the lighting counters of supermarkets, many parents often blurt out the same sentence.
The reporter found that in some large supermarkets and shopping malls, "eye protection lamps" accounted for more than half of the sales of table lamps. "Eye protection lamp" not only has many brands and different shapes, but also has a great price difference, ranging from 30 to 40 yuan to 450 yuan.
"The light emitted by our lamps is closest to natural light and can protect our eyesight." In a large supermarket on Garden Road, the marketer of a well-known lamp brand said that this kind of lamp uses frequency conversion technology and flashes 50,000 times per second, which is faster than the nerve reaction speed of human eyes, and the human eyes can't feel the change at all. People will feel more comfortable when studying and working in this light.
The reporter noticed that almost all of these "eye protection lamps" were marked with the words "no stroboscopic light", "natural light", "protect eyesight" and "relieve fatigue" in the instructions and packaging, and some even printed "no radiation", "brain protection and eye protection" and "myopia prevention".
"Although the eye protection lamp is a little more expensive, it costs more for children!" Several citizens who buy eye protection lamps are for school children, and they don't care much about the price when buying them. Opening their mouths is the best way to protect their eyes. Most of these parents are attracted by the materials presented by marketers, but the reporter noticed that these materials were printed by the manufacturers themselves, not the test reports issued by relevant state departments to protect their eyesight.
There is no national standard for eye protection lamps.
Six indicators to measure the effect
The interview found that there is no national standard for eye protection lamps in China at present, but according to the requirements of relevant national and international standards, table lamps should cover at least six indicators in order to achieve the effect of eye protection.
People from the provincial quality supervision department said that most of the "eye protection lamps" on the market are from the perspective of preventing stroboscopic, and the fluorescent lamps are changed from 100 low-frequency flashes per second to tens of thousands of flashes per second, so that the eyes can't feel the stroboscopic change of light, but it is not enough to solve the stroboscopic problem. According to the national standard "Performance Requirements for Reading and Writing Desk Lamps" and CIE international standard "Lighting Guide for Indoor Workplaces" S800-200 1, at least six requirements must be met to achieve eye protection:
To have uniform light distribution, the recommended value of lighting uniformity of working face is >;