Although the color temperature problem highlighted in this issue can also be reflected by specific indicators, it is more related to our subjective feelings. Human beings can directly identify it through the naked eye, and people with different skin colors have different feelings about the same color temperature.
For most shops, we can watch them with the naked eye. The use of high-quality lighting color temperature not only enriches the space level of the store, but also multiplies the texture of the products and attracts more eyeballs, so as to improve customers' goodwill and purchase desire for the brand.
Therefore, it is very important to select the color temperature of the lighting products of the store during the decoration of the store. Different color temperatures have different effects on the atmosphere and mood:
When the color temperature is less than 3300K, the light is mainly red, giving people a warm and relaxed feeling;
When the color temperature is 3300-6000k, the content of red, green and blue light accounts for a certain proportion, giving people a natural, comfortable and stable feeling;
When the color temperature is above 6000K, the proportion of blue light is large, which makes people feel serious, cool and low.
Many store owners have reported similar problems: after the decoration of the whole store, the lights will appear in different colors. Some places are white and some places are yellow. They feel very uncomfortable and not up to grade. This is actually the problem of color temperature consistency of lighting fixtures.
How can you attract customers into the store with such inferior lighting?
Of course, this color temperature consistency does not require that the entire store must adopt the same color temperature, but that the color temperature consistency should be considered in the same illuminated surface and range.
◆ concept of color temperature
The color temperature is simply the luminous color of the light. This concept is familiar to everyone.
Color temperature, abbreviated to CCT (correlated color temperature).
The source of color temperature is to heat a black body (this black body is not a specific black substance understood by everyone, but a theoretical black body). It starts heating from absolute zero (-273 ℃) and presents color with the change of heating temperature: it gradually changes from black to red, yellow and white, and finally emits blue violet light. That is the common color temperature of 1800k~7000k.
You can also learn about the color temperature calculation method: for example, if we want to obtain a color temperature of 2700k, that is, when the standard blackbody is heated to 2427 ℃, the color of the blackbody is 2700k (=2427 ℃ +273 ℃).
Similarly, 6500k=6227 ℃ +273 ℃.
You can think about what objects can still exist at 6227 ℃ or even 10000 ℃? Because we still have 12000k and 20000k light color temperature products.
We should know that the metal with the highest melting point is tungsten, which is no more than 3500 ℃ (this is also the reason why the bulb chose tungsten wire at the beginning), and the highest melting point of other composite materials is no more than 4300 ℃. Therefore, theoretical blackbody should be used for this blackbody.
◆ common lighting color temperature
The color temperature commonly used in the lighting is 2400k~6500k, which is the most acceptable lighting environment for the human body.
◆ consistency of color temperature:
In fact, we are more concerned about the consistency of color temperature.
（1） Monochrome product
For the same batch of lamps, the normal positive and negative deviation of color temperature will lead to poor consistency of on-site lights. Some deviations can be clearly seen by our own eyes, especially in the places where low color temperature lights are used. Many customers have great opinions on this kind of situation.
People who have worked in star rated hotels and high-end display cabinets will have a deep understanding: designers and Party A's customers will light up each light-emitting point for short-distance inspection, testing and comparison, and no color difference is allowed to appear with the naked eye.
Color difference is generally measured by color tolerance SDCM, and sdcm<5 is required for most indoor lighting places (national standards for some places also have requirements).
Although the current light source suppliers can provide a variety of color temperature products for lamp manufacturers to choose from, there is also a factor to be considered here. The same standard product will have a sub bin situation. For example, all take 3000K lamp bead products, and the products of the same supplier will be supplied from 2850k~3150k. The difference is 300K (this ± 150k is still a high standard), which can be distinguished by human eyes, Therefore, this situation will test the product standards and negotiation ability of lamp manufacturers.
Color difference is generally measured by color tolerance SDCM, and sdcm<5 is required for most indoor lighting places (national standards for some places also have requirements).
Although the current light source suppliers can provide a variety of color temperature products for lamp manufacturers to choose from, there is also a factor to be considered here. The same standard product will have a sub bin situation. For example, all take 3000K lamp bead products, and the products of the same supplier will be supplied from 2850k~3150k. The difference is 300K (this ± 150k is still a high standard), which can be distinguished by human eyes, Therefore, this situation will test the product standards and negotiation ability of lamp manufacturers.
We can take a look at the lighting effects of the following stores:
(some stores with poor effect)
Seeposh has been a mature supplier for many years. The lamp standards are strictly controlled, and the product color temperature consistency will be better in the industry. For example, for 3000K lamp products, the difference is 50~80k (± deviation).
（2） Two color temperature products
Two color warm lighting is also very popular now.
Because it can achieve various effects, it has been widely used in recent years.
In fact, you may also ignore a problem: when the LED lights are dimmed or tinted, there will be color inconsistencies in the same batch of lamps, and the color differences of some lamps are very obvious, resulting in poor results. Most stores are decorated in light colors. The color difference of lights with different colors will be more obvious. Many users do not know whether it is the product or the debugging system.
In fact, it is related to these two aspects:
01 related to product selection
In terms of products, the consistency standard of the selected two-color temperature light source is not high. The color temperature difference of LED light source is easier to be amplified, especially if it emits light through the lens (such as diffuse reflection light strip, light box module, ceiling spotlight, guide rail lamp and other products of lens type).
02 is also related to the commissioning system
The two-color temperature is mostly implemented by a special debugging system, which needs to send instructions through the system; At present, there are many manufacturers doing single control dimming or intelligent system dimming in the market. The effect is closely related to the professionalism, compatibility and stability of such debugging systems.
For most shops, we can watch them with the naked eye. The use of high-quality lighting color temperature not only enriches the space level of the store, but also multiplies the texture of the products and attracts more eyeballs, so as to improve customers' goodwill and purchase desire for the brand.
Therefore, it is very important to select the color temperature of the lighting products of the store during the decoration of the store. Different color temperatures have different effects on the atmosphere and mood:
When the color temperature is less than 3300K, the light is mainly red, giving people a warm and relaxed feeling;
When the color temperature is 3300-6000k, the content of red, green and blue light accounts for a certain proportion, giving people a natural, comfortable and stable feeling;
When the color temperature is above 6000K, the proportion of blue light is large, which makes people feel serious, cool and low.
Many store owners have reported similar problems: after the decoration of the whole store, the lights will appear in different colors. Some places are white and some places are yellow. They feel very uncomfortable and not up to grade. This is actually the problem of color temperature consistency of lighting fixtures.
How can you attract customers into the store with such inferior lighting?
Of course, this color temperature consistency does not require that the entire store must adopt the same color temperature, but that the color temperature consistency should be considered in the same illuminated surface and range.
◆ concept of color temperature
The color temperature is simply the luminous color of the light. This concept is familiar to everyone.
Color temperature, abbreviated to CCT (correlated color temperature).
The source of color temperature is to heat a black body (this black body is not a specific black substance understood by everyone, but a theoretical black body). It starts heating from absolute zero (-273 ℃) and presents color with the change of heating temperature: it gradually changes from black to red, yellow and white, and finally emits blue violet light. That is the common color temperature of 1800k~7000k.
You can also learn about the color temperature calculation method: for example, if we want to obtain a color temperature of 2700k, that is, when the standard blackbody is heated to 2427 ℃, the color of the blackbody is 2700k (=2427 ℃ +273 ℃).
Similarly, 6500k=6227 ℃ +273 ℃.
You can think about what objects can still exist at 6227 ℃ or even 10000 ℃? Because we still have 12000k and 20000k light color temperature products.
We should know that the metal with the highest melting point is tungsten, which is no more than 3500 ℃ (this is also the reason why the bulb chose tungsten wire at the beginning), and the highest melting point of other composite materials is no more than 4300 ℃. Therefore, theoretical blackbody should be used for this blackbody.
◆ common lighting color temperature
The color temperature commonly used in the lighting is 2400k~6500k, which is the most acceptable lighting environment for the human body.
◆ application scenarios of color temperature
Generally, the household color temperature is 3000-4000k, and the commercial color temperature is 3000-5000k.
The color temperature for household use is matched according to the decoration style and color, and the color temperature for commercial use is selected according to the commodity type.
In store lighting, the color temperature of lights is selected for different commodities and different lighting application places.
◆ consistency of color temperature:
In fact, we are more concerned about the consistency of color temperature.
（1） Monochrome product
For the same batch of lamps, the normal positive and negative deviation of color temperature will lead to poor consistency of on-site lights. Some deviations can be clearly seen by our own eyes, especially in the places where low color temperature lights are used. Many customers have great opinions on this kind of situation.
People who have worked in star rated hotels and high-end display cabinets will have a deep understanding: designers and Party A's customers will light up each light-emitting point for short-distance inspection, testing and comparison, and no color difference is allowed to appear with the naked eye.
Color difference is generally measured by color tolerance SDCM, and sdcm<5 is required for most indoor lighting places (national standards for some places also have requirements).
Although the current light source suppliers can provide a variety of color temperature products for lamp manufacturers to choose from, there is also a factor to be considered here. The same standard product will have a sub bin situation. For example, all take 3000K lamp bead products, and the products of the same supplier will be supplied from 2850k~3150k. The difference is 300K (this ± 150k is still a high standard), which can be distinguished by human eyes, Therefore, this situation will test the product standards and negotiation ability of lamp manufacturers.
Color difference is generally measured by color tolerance SDCM, and sdcm<5 is required for most indoor lighting places (national standards for some places also have requirements).
Although the current light source suppliers can provide a variety of color temperature products for lamp manufacturers to choose from, there is also a factor to be considered here. The same standard product will have a sub bin situation. For example, all take 3000K lamp bead products, and the products of the same supplier will be supplied from 2850k~3150k. The difference is 300K (this ± 150k is still a high standard), which can be distinguished by human eyes, Therefore, this situation will test the product standards and negotiation ability of lamp manufacturers.
We can take a look at the lighting effects of the following stores:
(some stores with poor effect)
Seeposh has been a mature supplier for many years. The lamp standards are strictly controlled, and the product color temperature consistency will be better in the industry. For example, for 3000K lamp products, the difference is 50~80k (± deviation).
(color temperature zoning range)
（2） Two color temperature products
Two color warm lighting is also very popular now.
Because it can achieve various effects, it has been widely used in recent years.
In fact, you may also ignore a problem: when the LED lights are dimmed or tinted, there will be color inconsistencies in the same batch of lamps, and the color differences of some lamps are very obvious, resulting in poor results. Most stores are decorated in light colors. The color difference of lights with different colors will be more obvious. Many users do not know whether it is the product or the debugging system.
In fact, it is related to these two aspects:
01 related to product selection
In terms of products, the consistency standard of the selected two-color temperature light source is not high. The color temperature difference of LED light source is easier to be amplified, especially if it emits light through the lens (such as diffuse reflection light strip, light box module, ceiling spotlight, guide rail lamp and other products of lens type).
02 is also related to the commissioning system
The two-color temperature is mostly implemented by a special debugging system, which needs to send instructions through the system; At present, there are many manufacturers doing single control dimming or intelligent system dimming in the market. The effect is closely related to the professionalism, compatibility and stability of such debugging systems.
