Which protects the eyes, white light or warm light?

Which protects the eyes, white light or warm light?

Which energy-saving lamp protects eyes, white light or warm light? Warm light and white light actually have their own advantages and disadvantages. Warm light is easier for people to adapt, but it is easier to see things clearly. White light is bright enough, but it will cause visual fatigue. Let's take a look at energy-saving lamps. Is it white light or warm light that protects the eyes?

White light or warm light, which energy-saving lamp protects the eyes 1, which involves the specifications of a lamp. Some people think that the higher the brightness of white light, the more dazzling it is. Relatively speaking, warm light is yellowish light, which may be better for the eyes, so this is not necessarily right. In fact, what kind of light does not irritate the eyes is mainly determined by its color temperature, and there is also a color rendering index of lamps, which are two indicators.

Generally speaking, the color temperature is below 5 K, and the color rendering index of lamps is above 95, which basically meets the requirements. On the basis of this standard, neither warm light nor white light should be too irritating to the eyes. What kind of lamp to use when reading, doing homework or watching other things mainly depends on the design of the specific room and the user's hobbies.

What is the difference between warm white and warm yellow of energy-saving lamps?

The difference between warm white and warm yellow is that the color temperature is different. The color of light is usually between 2700k and 7000k K. The higher the color temperature, the whiter it is and the brighter it looks visually. Warm color means 2700k, sunlight means 6400k, and cooldaylight means 6500k-6700k.

Light sources with different color temperatures have different light colors and bring different feelings:

1, the color temperature of 5000K is a bluish white that gives people a cold feeling.

Extended data:

Different color temperatures of light sources bring different feelings. Under the irradiation of high color temperature light source, if the brightness is not high, it will give people a cold feeling; Under the irradiation of low color temperature light source, too high brightness will give people a sultry feeling. The lower the color temperature, the warmer the color tone (reddish); The higher the color temperature, the colder (bluish) the hue.

Sunny day 10 from noon to 2 pm, there is no cloud and no direct sunlight in Wan Li, and the standard sunlight is about 5200 ~ 5500 K; The color temperature of news photography lamp is 3200 k; Generally, the color temperature of tungsten lamp, tungsten lamp used for black-and-white photos and ordinary light bulbs is around 2800k.

Energy-saving lamp, white light or warm light, which protects eyes, two LED bulbs and energy-saving lamp, which is better?

1. Mercury pollution exists in energy-saving lamps during production and after being abandoned. At present, western countries attach great importance to mercury pollution. People in China are increasingly aware of the "harmfulness" of mercury pollution. Led lamps are environmentally friendly and do not contain harmful substances such as mercury. The assembly parts of LED lamps can be easily disassembled and assembled, and can be recycled by others without recycling by manufacturers.

2. Energy-saving lamps are glass products, which are easily broken and difficult to transport and install. The solid-state package of Led lamp belongs to the type of cold light source. Therefore, it is very convenient to transport and install, and can be installed in any miniature and closed equipment, without fear of vibration and basically without considering heat dissipation.

Energy-saving lamps still consume too much electricity. The energy consumption of white LED is only110 of incandescent lamp and14 of energy-saving lamp.

4. Energy-saving lamps are easy to be damaged and have short service life. The led lamp has a long service life, which can reach more than 65438+ 10,000 hours and can work at high speed. If the filament of energy-saving lamp is frequently switched on and off, it will turn black and soon break down.

5. The power of a single LED is low, and multiple LEDs need to be used in parallel to achieve the same brightness as energy-saving lamps.

6. The color rendering index is low, and the color displayed under LED illumination is not as real as that of energy-saving lamps.

7.LED lighting technology is not as mature as energy-saving lamp technology. In addition, at present, LEDs are more expensive than energy-saving lamps.

Energy-saving lamp: white light or warm light, which protects the eyes? Compared with energy-saving lamps, which one is better?

LED lights are better.

1, technical comparison:

The main luminescent material of energy-saving lamps is tungsten wire. The principle is that the tungsten wire will generate electrons after being electrified and heated, and the electrons will be accelerated by certain technical means. The lamp tube of the energy-saving lamp is designed to be vacuum, and it is filled with mercury, that is, mercury.

Accelerated electrons react with evaporated mercury atoms to produce ultraviolet light. The fluorescent substance is coated in the energy-saving lamp tube, and the fluorescent substance emits light when irradiated by ultraviolet light.

2. Energy consumption comparison:

Under the same luminous flux, the energy consumption of LED lamps is only 1/4 of that of energy-saving lamps. This is because a small part of the energy consumed by energy-saving lamps will be converted into heat energy, while LED lamps do not have this problem. In daily use, 10W LED lamp uses 1 00h, and only consumes1kWh, which is far superior to energy-saving lamps.

Methods to prevent LED light from fading;

1. Try to choose LED lamps with good quality and good heat dissipation. In the process of use, we should also try to reduce the workload of lamps, so as to delay the speed of light decay and prolong the service life of lamps.

2. Correct installation of indoor lamps is the premise of prolonging the service life of lamps. If it is not installed correctly, the lamps are easy to break down, and sometimes even burst, short circuit and catch fire, which is very dangerous.

3. Pay attention to the use of indoor lamps at home. Don't switch them on and off frequently, because the current passing through the light source at the moment of frequent start-up is greater than that during normal operation, which makes the filament temperature rise sharply and accelerates sublimation, thus greatly reducing its service life.