Good afternoon dear friends! Once all welcome to the site "Electrician in the House". V recent times the demand for LED products is constantly growing. The use of innovative light sources is used in various sectors of the national economy.
New cars are equipped with LED lamps, houses, business premises and outdoor advertising stands are illuminated. They are used in spotlights, street and office lamps, and in many other human inventions.
Chromaticity diagram and color temperature. The color scale diffused by the lamp is very important. Each color is appropriate for use. In addition, everyone will have their own preferences. The poisoning on the products seems more flattering because the neutral white shade resembles the sun we have in the middle of the day. It is also a way to give the impression that the light is natural in order to create an artificial atmosphere in enclosed spaces.
As for cool white, it is a shade that turns blue, it has a very specific application and is very much appreciated by professionals. The working temperature of the bulbs should not be confused with their color temperature! Bulb color temperature is measured in Kelvin.
Concept does not even imply the amount of heat given off by them, but has a completely different meaning. It - visual effect perception of the light source by the human eye. As the color spectrum of light approaches that of the sun (yellow), the "warmth" of each lamp is determined.
You can also associate it with a candle flame, and you will immediately understand how this phenomenon is described. On the contrary, the bluish tint of light is associated with a cloudy sky, snowy night lights. This light evokes cold, pale images in us. But there is a definite scientific explanation for everything.
Have you ever had to pick a color in a flower shop and when you come home find out that it is different from how you saw it. This phenomenon is called "metamerism", i.e. as the color changes when it meets in different sources Sveta. For this reason, it is always best to evaluate the colors selected in environment, and the lighting conditions in which they will be used.
There are some colors that are particularly metamorphic, such as some neutral shades coloring light brown, gray, gray dominant gray, dominant yellow-green gray, mulberry and lilac. Light has great importance in color rendition. Before making a choice, you must appreciate the kind of light that you will receive in daytime in the environment that we will be decorating or painting.
When a piece of metal is heated, it has a characteristic glow. First, the color range is in reds. As the temperature rises, the color spectrum gradually begins to shift towards yellow, white, bright blue and violet.
Each color of the metal glow corresponds to its own temperature range, which makes it possible to describe the phenomenon using well-known physical quantities... This helps to characterize the color temperature not as a random value, but as a certain heating interval until the desired color of the spectrum is obtained.
Light essentially consists of two types, natural and artificial, and is classified according to its color temperature - important feature visible light. Colour temperature- it is nothing more than a light shade and is measured in degrees Kelvin.
Consider a piece of dark metal heating up to become luminous; at first it emits red light as it will heat up, it will turn yellow and then white and finally blue. This is an experiment that led to the graduation of color temperature in Kelvin. Important: the colder the light, the higher the value in degrees Kelvin.
The emission color spectrum of LED crystals is somewhat different. It differs from the possible glow colors of the metal due to a different method of its origin. But the general essence remains the same: to obtain the selected shade, a certain color temperature is required. It should be noted that this indicator has nothing to do with the amount of heat generated by the lighting fixture.
Change according to the direction it is coming from, by the season of the year, by the time of day, by latitude and where the accommodation is located, here are some guidelines for getting started. A room facing north receives a fairly limited amount of cool light, the dominant blue color, which means that shades of blue will be more intense.
If you want to optimize brightness, it is better to use warm shades- yellow, red, orange - clear enough, avoiding, if possible, gray as they will make the room look dry on and off. The light coming from the north is fairly constant throughout the day, so the colors you choose won't undergo major changes.
Once again, I want to note, do not be confused color temperature and the physical temperature (amount of heat) that your lamp emits, these are different indicators.
Color temperature scale for LED lamps
Today's domestic market offers a huge range of LED crystal light sources. They all work in different temperature ranges. Usually they are chosen depending on the place of the intended installation, because each such lamp creates its own, individual appearance. One and the same room can be significantly transformed by changing only the color of the lighting in it.
However, on the south side of the room, there are many bright and warm colors. The decoration of such a room is very simple, and you can use both warm and warm colors... As with northern rooms, even those exposed to the south are constantly illuminated throughout the day, avoiding crisp color changes.
The light coming from the south makes the colors especially vivid and vivid, which allows you to achieve an "energizing" effect even in light colors... An open room in the East gets a lot of light in the early morning to keep warm, and gets colder and colder during the day. The tip is designed for use with both hot and cold colors. However, the shades should be read with, say, pastels. Green tones can be a good choice.
For optimal use of each LED source light, you should decide in advance which color is most convenient for you. The concept of color temperature is not specifically related to LED lamps, it cannot be tied to a specific source, it depends only on the spectral composition of the selected radiation. Each lighting device has always had a color temperature, just when standard incandescent lamps were released, their glow was only "warm" yellow (the emission spectrum was standard).
The room on the west side begins to receive sunlight during the day, so in this setting it will be cold in the morning during the day. The best way optimize its brightness - use neutral colors with either light or cool dominance. Gray tones are also very good, although they will get colder and warmer in the morning in the afternoon.
It is also necessary to take into account the change in light that occurs in different seasons of the year, for example, in winter, and not because this season less light, but its quality changes, it becomes colder, and this can significantly change the color of our interior and, in particular, the color of the walls.
With the advent of fluorescent and halogen light sources, white "cold" light came into use. LED lamps are characterized by an even wider colors, due to what independent choice optimal lighting became more complicated, and all its shades began to be determined by the material from which the semiconductor was made.
A room facing the West will be very bright in the summer, but much less in the winter due to the sun will soon disappear, the same applies to the room that is exposed to the east, which will receive much more light in the mornings than in the winter in summer. ... You must remember this always, when you fall in love with a dark color, imagine our room in winter with a little light.
The last element to evaluate is the quality of the artificial light we will be using in our room. Fluorescent high performance bulbs tend to emit a cool green light despite the availability of hot light fluorescent lamps on the market. Halogen lamps and incandescent bulbs have a warm light and LEDs emit very bright and White light.
Relationship between color temperature and lighting
A clear knowledge of the tabular values of this characteristic helps to understand what color will be discussed further. Each of us differs in our color perception, therefore, visually determine coldness or warmth luminous flux only a few succeed.
The averaged indicators of a group of products operating in a given spectrum are taken as a basis, and in the final selection of LED lamps, the specific conditions of their operation (installation site, illuminated space, purpose, etc.) are taken into account.
Illuminated room with warm light will have colors in the reds and high yellows, and those in the blues and greens will be disabled. However, in cold light such as a fluorescence light bulb, green and blue will be elevated, while red and yellow will be dim and off.
Last thing: dark colors absorb a lot of light, this means more artificial light needs to be used, and as we all know, it's not free. Can light affect your health? Alexander Wunsch, an internationally renowned expert in photobiology, shares the hidden dangers of LEDs that most people are completely unclear about. In fact, it can be one of the most important topics affected on this site as it has a huge impact not only to prevent blindness with old age, but also to the pervasive hidden risk factor that can sabotage our health.
Today, all light sources, depending on their range of luminescence, are classified into three main groups:
- - warm white light- work in temperature range from 2700K to 3200K. The spectrum of white warm light emitted by them is very similar to the glow of a conventional incandescent lamp. Lamps with such color temperature recommended for use in living quarters.
- - daylight white light(normal white) - ranging from 3500K to 5000K. Their glow is visually associated with sunlight in the morning. This is a luminous flux in the neutral range, which can be used in apartment technical areas (hallway, bathroom, toilet), offices, classrooms, production halls, and so on.
- - cold white light(daytime white) - ranging from 5000K to 7000K. Reminiscent of bright daylight. They illuminate hospital buildings, technical laboratories, parks, alleys, parking lots, billboards, etc.
| Colour temperature | Type of light | Where is applied |
| 2700 K | light "warm white", "reddish white", warm part of the spectrum | Typical for conventional incandescent lamps, but also found in LED lamps... Used in cozy home interior, promotes rest, relaxation. |
| 3000 K | light "warm white", "yellow-white", warm part of the spectrum | Occurs in some halogen lamps, also found in LED lamps. Slightly colder than the previous one, but also recommended for residential use. |
| 3500 K | daylight white, white part of the spectrum | Created by fluorescent tubes and some modifications of LED lamps. Suitable for apartments, offices, public spaces. |
| 4000 K | light "cold white", the cold part of the spectrum | An irreplaceable attribute of high-tech style, but suppresses with its deathly pallor. Used in hospitals and underground facilities. |
| 5000 K - 6000 K | light "daytime" "white-blue", daytime part of the spectrum | Perfect imitation of the day for workers and industrial premises, greenhouses, greenhouses, terrariums, etc. |
| 6500 K | light "cold daytime" "white-lilac", the cold part of the spectrum | Suitable for street lighting, warehouses, lighting of industrial facilities. |
It is clearly seen from the given characteristics that at low color temperature red predominates, and blue is absent. As the temperature rises, green and blue colors appear, and red disappears.
In this regard, this type of lighting has had a huge impact on real opportunity reduction in energy consumption by as much as 95 percent compared to similar incandescent bulbs. Investigating the causes of degeneration macular associated with aging, researchers have focused on the blue portion, which complements the visible spectrum in the human eye. According to recent research, this type of radiation can cause harmful effect on the retina.
If you ignore this new knowledge, you can face serious consequences in the long run. Other health problems are rooted in mitochondrial dysfunction, which can also be expanded, starting with metabolic disease and cancer.
Where can I find out about this parameter?
Manufacturers indicate on the packaging of each lighting lamp. specifications... Among all other characteristics, such as power, voltage, network frequency, must be indicated (this applies not only to LED lamps). You should definitely pay attention to this main factor before buying a lamp.
The definition of light applied to artificial sources is very specific. Light is only visible between 400 nm and 780 nm, but the "light" is actually much more than the eye can see. For example, red light phototherapy lamps can be used in medical therapy to increase blood circulation, and this is the part that is not counted until it is limited to the visible part.
Physicists believe that infrared radiation is just heat waste. But from a medical point of view, this is absolutely wrong; over the past 30 years, hundreds of scientific articles have appeared on the positive aspects of the “near infrared” part of the spectrum.
By the way, given characteristic is displayed not only on the packaging, but also on the lamp itself. Here is one example, a 7W LED lamp with a temperature of 4000K. It is installed in my home, in the kitchen, and shines with pleasant daylight.
And here is another example of the designation on the LED spotlight for plasterboard ceilings, temperature 2800 Kelvin. Luminaires with this color temperature shine with a warm light similar to an incandescent lamp and were installed in the bedroom on one of the objects.
What makes infrared near so special? You cannot hear the near infrared ray as heat, and you cannot see it, but it has wonderful health benefits. Basically, there are two different but related issues: the problem of analog light versus a digital light source and the difference in spectral wavelengths. From the latter, when you look at the spectrum of the rainbow, the visible part of the light ends in red. Then follow the infrared and infrared range.
As long as the mid and far infrared ranges are not visible, the same can be felt as warm. In this region, water molecules have very low absorption and therefore radiation has very high transmission. In other words, it penetrates deeply into the tissues of the body. The adjacent infrared region does not heat tissues for which it does not directly produce any thermal effect.
What lamps to choose for the office
V normative document SP 52.13330.2011 "Natural and artificial lighting" recommends the use of various radiation sources, depending on their type, power, construction and characteristics of the luminous flux. It is prescribed to equip the premises of the housing stock with small and low-temperature "warm" lighting devices, and install larger lamps of normal "white" light in the non-residential stock.
All of this changes significantly when the wavelength is increased by, say, 000 nm. Here we are in the infrared B field, which is already perceived as heat. Starting from 000 nm, we absorb almost completely, mainly by water molecules, which are felt as heating.
The near infrared is essential for mitochondria and eye health. The near infrared range affects health in many ways. For example, it helps repair and regenerate essential cells in the retina. Chromophores are molecules that absorb light. This optical tissue window allows radiation to penetrate tissues larger than 50 cm or more.
It has been proven that white lighting is optimal for the work process, since the part of the blue spectrum contained in it has a beneficial effect on a person, helps him to concentrate, accelerates the reaction and working processes of the body. It is good to choose light sources from 3500K to 5600K, with white or neutral light, with a slightly bluish tint. Such lighting will make it possible to increase efficiency up to the maximum mark.
Lighting plays an important role in biological energy production
Adenosine Triphosphate - Cellular Energy - End Product. This is why the lighting problem is important. As Wunsch further explains. Infrared rays are the body's way of supplying light in the near infrared range. But not an infrared sauna. Most of them only offer infrared and do not have full spectrum. They emit most of the hazardous natural electromagnetic fields that are hazardous. So you must choose infrared saunas that emit very low or non-trivial unnatural electromagnetic fields.
Both fluorescent and LED lamps are suitable, although the latter will give significant energy savings.
On the contrary, it would be a big mistake to install cold white light fixtures with a range close to 6500K in such a place. This will lead to rapid fatigue of employees, complaints of headaches and a sharp decrease in efficiency.
Infrared radiation is used for wound healing and anti-aging treatments
Beneficial effects can be obtained through wound healing and anti-aging procedures that use the near infrared region. More near infrared light is produced and less nutritional energy is needed to maintain thermal homeostasis. This requires clarification. Most of the metabolic energy used does not come from food. In this case, there is also a thermodynamic aspect. Maintaining a normal body temperature involves two mechanisms: the production of energy in the mitochondria from food and the energy of the near infrared photons from the sun and incandescent lamps, which are able to penetrate deep into tissues even through clothing.
Which lamps are suitable for the home
White light is not recommended in apartments and private houses. It is not necessary to place the same lamps everywhere; it is better to use individual recommendations for lighting equipment in such rooms. You can install white neutral lights in the kitchen, bathroom and hallway. Their temperature can range from 4000K to 5000K.
But for the bedroom, nursery and rooms where you are relaxing, it is preferable to use warm tones of the light spectrum. Here the best solution there will be warm white light closer from 2700K to 3200. It will relieve daytime tension, create coziness and allow you to relax.
It is convenient and effective to use normal white light in the reading area and work area, as well as to illuminate mirrors in front of which makeup is applied. This will maximize color contrast and ease of use.
The child's desk is better equipped lamp with a temperature of 3200-3500K... It will not create unnecessary fatigue for the eyes, and the proximity to the white spectrum will help you get ready and tune in to work. For all LED lamps their working temperature indicated on the package.
This is actually all dear friends. If you liked the article, I would be grateful if you share it on social networks.
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