Overview of the characteristics of desk lamp

★ Enjoy modern lighting and avoid the impact of bad lighting on human health. Experts suggest that when indoor lighting must be used, five principles of lighting should be mastered:

1, widely used lighting, light to illuminate the whole desktop;

2, the use of uniform lighting, each part of the illumination should be consistent;

3. Keep stable lighting, and the light source cannot be dark or flashing;

4. Keep sufficient lighting;

Finally, be careful not to let the light shine directly on your eyes.

★ Common sense of healthy lighting when using lamps: For example, the best illumination for reading has a great relationship with age, and the illumination required by the elderly is 15 times that of children.

★ Why does the high-frequency eye protection lamp have electromagnetic radiation?

In order to overcome the stroboscopic of 50hz fluorescent lamp, the high-frequency eye protection lamp uses the frequency of 40000 ~ 55000hz, which will inevitably bring electromagnetic radiation from high-frequency power supply. Environmental experts point out that excessive electromagnetic radiation may lead to palpitations, insomnia, leukopenia, memory loss, and even decreased immune function, and cause damage to the cardiovascular system and nervous system.

Electromagnetic radiation damage is cumulative. The closer the distance, the lighter the weight and the greater the damage. More protection and less danger have become a kind of knowledge.

★Led is a semiconductor solid-state light-emitting device, which has the advantages of small volume, light weight, high brightness, low energy consumption, long service life, high safety, high color purity, good directivity, low maintenance cost, environmental protection and no pollution.

★Led lighting is a kind of green light source: low working voltage and low power consumption; Stable performance and long service life (generally 654.38+ 10,000 hours); Strong shock resistance and vibration resistance; Led lighting products can provide high-quality light environment, improve the light efficiency of the lighting system, have no infrared and ultraviolet components, and have high color rendering and strong luminous direction; Good dimming performance, no visual error when the color temperature changes; The cold light source has low calorific value and can be safely touched; Improve glare, reduce and eliminate light pollution. Zero stroboscopic, no eye fatigue. No electromagnetic radiation, prevent radiation pollution and protect the brain. It can not only provide comfortable lighting space, but also meet people's physiological health needs. It is an environmentally friendly and healthy light source. Long-term use can protect eyesight and prevent myopia. Disadvantages: 1, expensive; 2. There is still a big gap between the generally achievable light effect and the theoretical light effect; 3. There is a big gap between the achievable life and the theoretical life (10w hour); 4. There is still a certain calorific value; 5. Light attenuation can be greatly reduced. ★ High-quality light source is the basis of green lighting. A high-quality light source should have the following three characteristics.

First, there must be no ultraviolet light and infrared light in the spectral components. Long-term excessive exposure to ultraviolet rays is not only easy to cause keratitis, but also harmful to lens, retina and choroid. Infrared rays are easily absorbed by water and absorb too much infrared rays when they gather through the lens of human eyes. Over time, the lens will degenerate, leading to cataracts.

Second, the color temperature of light should be close to natural light. People live in natural light for a long time, and the human eye has strong adaptability to natural light and good visual effect.

Third, the lights are stroboscopic. The power supply frequency of ordinary fluorescent lamp is 50 Hz, that is to say, it lights up and down 100 times per second, which is a low-frequency flash, which will make the regulating organs of human eyes in a tense state of adjustment, leading to visual fatigue. If the luminous frequency is raised to hundreds or tens of thousands of hertz-high frequency, the human eye will not feel stroboscopic; But the true stroboscopic light is the light from DC power supply or semiconductor solid-state light-emitting devices (such as led), which is called stroboscopic light.

★ There are many eye protection desk lamps called stroboscopic. Most desk lamps work by using electronic ballasts to increase the frequency, which can only be called high-frequency flash rather than real stroboscopic desk lamps.

★ DC eye protection lamp, a new milestone cup in the history of desk lamp, turns alternating current into direct current, illuminates with direct current, and supplies power with direct current without flashing at all. When in use, the light is close to natural light, very bright, but not dazzling at all. Realize true no stroboscopic and no radiation. Due to the diversity of desk lamps, the size, style and material of desk lamps are slightly different for different places of use. For example, the table lamps used in hotels are much larger than those used in home decoration, especially those used in hotel lobby, which are bigger, heavier and more luxurious. European antique desk lamp is durable, supports European architectural style, and has the effect of adding flowers. Modern business hotel suites are equipped with some modern and simple desk lamps, which are refreshing and concise and will make people feel refreshed. Luxury and high-grade desk lamp, with suitable environment, decorated the space well, no matter whether the lamp is on or off, it is a work of art! Therefore, for designers, we must consider whether the style, style and price of the desk lamp you designed can meet this demand.