Cold light bulbs. LED bulbs: yellow light or white

In office and industrial premises, it is customary to use white LED lamps, as they emit light that is as close as possible to natural daylight. Lamps with white light are often used to organize lighting in apartments. If radiate led lamp yellow light, then they are considered unsuitable for work. But at home, there are no strict requirements for lamps, especially for bedrooms and halls. This is where designers prefer to use the play of yellow light.

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Why can LEDs glow in different colors?

Each LED lamp contains several LEDs on an aluminum board, which are made of semiconductor materials. Why do some lamps emit yellow light, others white, others red or green?

The fact is that each semiconductor is capable of emitting light waves of only a certain length when converting electrical energy into light. The color of a light beam depends on its wavelength. So, the combination of gallium with nitrogen allows you to end up with green light. Yellow light is capable of emitting a compound of aluminum, gallium, arsenic and phosphorus, as well as a compound of phosphorus and gallium. Manufacturers sell LEDs in bulk, and each of them already has its own color.

The body of the LED lamp is painted in the same color that the lamp gives during operation. But it does not affect the color of the light flux itself. The color of the case is needed only in order to determine what kind of light it will emit without turning on the lamp in the network.

White and yellow LED lamps: which is better?

There are few disadvantages of LED lamps. For example, if it emits led lamp yellow light, and not white, then it cannot be used to organize lighting in an office where a working environment should reign. The light should be bright, like on a sunny day, and the sun gives white, daylight. The yellow color is soft, it is great for an apartment, but not in a room reserved for an office. Only yellow color will cope with the design task regarding the placement of accents in the interior, ceiling lighting or wall panels.

But both yellow and white LED light lamps have a lot of advantages over any other lamps:

• Saving electrical energy due to high light output (up to 90% instead of 10% for traditional lamps);
• Ensuring even illumination without flicker visible to the eye;
• Long service life, which is not reduced by repeatedly turning the light on and off, as is the case with incandescent lamps;
• The ability to choose between cold and warm shades of the same color;
• Housing resistance to mechanical stress;
• Ecological and fire safety of luminaire design;
• The ability of LEDs to glow with a strong voltage drop and with a slight jump.

The disadvantages of the yellow lamp and the fluorescent lamp are also the same. And they consist in the direction of the emitted light flux. However, in design art, it is low-voltage yellow LED lamps that are capable of highlighting the main element of the interior with their directional beam of light, dividing the space into functional zones. And the high price of LED lighting fixtures more than pays off with low energy costs.

In this way, yellow light led bulbs in no way inferior to white lamps. They differ only in the scope of their application: yellow light is decorative, while white is necessary for providing a working environment.

Warm white or cool white: which light is best? In the modern world, the vision of each person is under increased stress: computer monitors, TV screens and all kinds of gadgets are constantly in front of our eyes, at work and at home. Therefore, many people who seek to compensate for damage to vision, at least where possible, are concerned about which artificial light is better and more beneficial for the eyes - cold, warm white or yellow. In addition, the color of lighting affects the perception of the interior of the room, it can be emphasized favorably or vice versa, it is unpleasant to distort colors. From this it follows that even such a trifle as the choice of a light bulb should be treated with attention. The effect of lighting color on a person It is worth noting that you should not worry about the relationship between the color of lighting fixtures and eye health - color temperature does not affect vision. However, it still has a certain effect on a person: to some extent, our psycho-emotional state and mood depend on it. Warm light promotes relaxation, cold light invigorates and keeps in good shape, so each of them is appropriate in its place and at its time. ______________________________________________________________________________ No matter how many companies involved in the development of artificial lighting devices try to create a light bulb that is fully consistent in all respects with natural sunlight, to date, all attempts have been unsuccessful. ______________________________________________________________________________ Color temperature of the light source To find out what color the light from an energy-saving or LED lamp will be, you need to pay attention to the color temperature indicated on the package. The unit of measure is Kelvin (K). The lower the value of this value, the more yellow the light will be. Light from a light bulb with a high color temperature will be slightly bluish. Most often there are three main lighting colors: White warm light - 2700-3500 K. Neutral or natural white light - 3500-5000 K. Cool white light - 5000-5400 K. What shade is suitable for lighting different parts of the apartment, read on. Warm light Warm white lighting with a familiar yellowish tinge is comfortable and pleasing to the human eye, its color temperature is the same as that of yellow sunlight in the early morning or near sunset. Such a shade can be provided as conventional lamps incandescent and halogen. You can also find on sale fluorescent and warm spectrum LED lamps. Where is the best place to use this light? In the living room. It is recommended to use warm spectrum lighting in rooms where you want to create a relaxed and cozy atmosphere. For example, in a room where the family gathers in the evenings to have dinner and chat. ________________________________________________________________________ In the living room, it is best to install a chandelier that diffuses light that fills the entire space of the room. ________________________________________________________________________ 💡In the kitchen. Warm lighting is perfect for the area above the dining table: dishes lit with a yellowish light will look more appetizing and more beautiful. 💡In the bathroom. Soft warm light in the bathing area will help you relax. 💡In the bedroom. It is in this room that it is especially important to create a feeling of calm and comfort so that the eyes can rest. Warm light in the interior Lamps with a warm spectrum are used by designers to increase the color saturation of warm-colored interior items. Cold shades, on the contrary, will become less noticeable. Blue and green colors will be distorted: this is due to the fact that in the light of such a lamp there are no rays of the corresponding spectrum. Under such lighting, cool tones change as follows: 🎨 blue may appear greenish; 🎨 blue will become faded; 🎨 dark blue will look like black; 🎨purple can be confused with red. That is why you need to think through all the details in advance, before buying a lamp, so that the illuminated room does not take on an undesirable or even unpleasant look for you. Natural white light Halogen and some fluorescent lamps give lighting as close as possible to natural white light, so the colors are practically not distorted. It is advisable to install them: 🔆 in children's rooms; 🔆 in the hallway; 🔆in working area kitchens; 🔆 in a place intended for reading, for example, near an armchair or in a bedroom above a bed; 🔆 next to mirrors, as they correctly convey skin tone. ______________________________________________________________________________ It must be remembered that it is important to correctly position the light source relative to mirrors and reflective surfaces so as not to blind the eyes of a person looking into them. ________________________________________________________________________________ Cold light The light of the cold color spectrum resembles the white winter sun. It is often used in office spaces, as well as wherever it is necessary to create a working mood. It is neutral and cool shades that are suitable for those places where the presence of both natural and artificial light is expected, as lighting in these tones helps to improve concentration. _____________________________________________________________________________ Cold light is perceived by the human eye as brighter and more intense. _____________________________________________________________________________ In apartments, cold light sources are most often used: 💡In the kitchen, where accent lighting is required for cooking. 💡 In the office, because such light balances and increases efficiency. 💡 In the bathroom, in the wash area - cold bluish lighting will help you cheer up and wake up completely. 💡 In living rooms, it is recommended to use this spectrum when they have a modern design and a lot of free space. Colors in such lighting are also distorted, but the changes concern only warm tones. The red, orange, and yellow colors will change to appear purple, brown, and greenish, respectively. And here are the blue ones green colors, on the contrary, will look rich and juicy. ______________________________________________________________________________ Note! The color of lighting is affected not only by the color temperature of the light bulb, but also by the color of its bulb, as well as the lampshade or ceiling. ________________________________________________________________________________ Other parameters of light sources When choosing a light bulb, it makes sense to pay attention not only to color, but also to its other parameters. All light sources used today are characterized by several features: 📌 The principle of operation. The following types of light sources can be distinguished: LED, fluorescent, halogen, as well as the well-known incandescent lamps. 📌 Flask shape. The most common types of flasks are pear-shaped, spherical, tubular, fungus-shaped and the so-called "spots". 📌 Efficiency. LED lamps have the highest indicator today. 📌Cost. The cheapest light sources are incandescent lamps, the most expensive are LEDs. However, the latter are much more environmentally friendly and consume much less electricity. If you are interested in how the room will look when artificial lighting is on, it is better to further clarify the color rendering index of the light bulb at the time of purchase. The letters Ra are used to indicate the color rendering index, ideally its value should be 90 or higher, this will allow you to see the natural colors of objects in a room lit by a lamp. If the Ra value is less than 80, the visible colors will be distorted.

Light and color are connected in many ways, since color temperature determines what a person sees. In warm light, the outlines of objects acquire a certain comfort, a homely atmosphere. Cold light, in turn, can keep in good shape, stimulate the nervous system, help in work, ensuring high performance. Light can tire or invigorate, it all depends on the color.

Warm and cold light

Warm light (2700-3200 K) has a special yellowish glow, somewhat similar to the morning sun. For the eyes, this shade is considered the most optimal. For example, conventional or some halogen lamps can give the desired shade in your home. Moreover, it is the best for living quarters.

Professionals from the design world especially recommend choosing a similar option for those rooms that are designed for rest and relaxation. It's good to eat here, spend time with family, just sleep. A cozy atmosphere will be guaranteed with such lighting.

Cold light (4000 - 7700 K), on the contrary, has a "working purpose". It helps to concentrate, create the atmosphere necessary for work, so cold light lamps are used in rooms where you need to spend a lot of time in an active waking state.

In offices, offices, and enterprises, such lighting is most often used. Based on scientific research, it has been proven that the right lighting in the workplace significantly increases productivity.

How to choose the light "by eye" and soul

It must be remembered that each light has its own color temperature. Knowing this, you can roughly navigate when buying the right lamp. For example, a temperature of 2800 - 2854 K - these are ordinary gas-filled lamps with a tungsten spiral - the light that is most familiar to humans. At a temperature of 3400 K there will be a glow like that of the sun leaning towards the horizon. And if you want to see the morning sun, then a temperature of 4300 - 4500 K is suitable here.

The higher the temperature, the colder the light will be. So the flash works at 5500 - 5600 K, and a clear blue sky in winter is 15,000 K.

It is extremely important to know the color temperatures of light for photographers, filmmakers and television people. Properly set lighting in the studio is the key to a successful shot. And for photography - perhaps even some kind of award for the picture. You should keep this side of the question in mind so as not to get into a mess by taking a good shot and getting a cloudy dark something as a result.

It's no secret that all lamps differ in the spectrum of color radiation, which can be warm or cold. There is such a thing as color temperature - one of the main characteristics of LED lamps. It is measured in kelvins (K) and ranges from 800K to 20,000K as seen by the human eye.

Initially LED lights emitted only cold light, which was distinguished by a specific bluish tint. Now there are lamps on the market, the color temperature of which can vary from 2000 K to 18000 K. Conventionally, color radiation can be divided into three categories: warm light (up to 3500 K), neutral light (3500 K - 5000 K) and cold light (over 5000 K). TO).

Often the question arises, what kind of light is better to use for lighting - warm or cold. There is no single answer here, since the perception of light largely depends on the individual characteristics of a particular person. When choosing a lamp, you need to consider the purpose of the room.

So, in living rooms (bedrooms, living rooms), warm white light in the range of 2500-3200 K will be most comfortable. Such a cure gives the usual yellowish light, like in traditional incandescent lamps, creates the impression of comfort and homeliness. Such light will also look good in restaurants, hotels, family clubs - wherever it is desirable to create a pleasant homely atmosphere.

For work and reading, neutral light is more suitable, which is close to natural sunlight. Such lamps are more useful in terms of the level of illumination and are therefore recommended for installation in classrooms, offices, public institutions, shops.
Among the LEDs, fluorescent lamps with a radiation of 6000 K and are usually used in office lamps are especially distinguished. It has been established that such light adjusts to the working mood, promotes better concentration and increases working capacity. For the same reason LED lightening with a daylight color temperature is not recommended for use in residential areas, especially in bedrooms.

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