Led the most important is the temperatura de culoare. Customer order the led strip light and led linear light , they will let us know what color they want. That is important for us to make the right products to customer.We can know some more in this post about CCT. Then we can know what led color temperature we can offer.
Color consistency represents a light quality index for led light fittings. The indicator called correlated color temperature, describes white light as neutral, warm (reddish), or cool (bluish). Even when the CCT value is same, there is variation that can be easily discerned. LED lighting manufacturers aim to ensure color consistency by developing methods to strictly control color variations.
For this reason, LED manufacturers develop various proprietary binning optimization processes in order to achieve the best possible color consistency. Through high performance LED optimization processes, the color variations are tightly controlled. Some LED manufactures employ advanced bin selection formulas that exceed chromaticity coordinates industry standards in order to guarantee consistency and uniformity of color temperature and hue.
CCT – Color Temperature
The temperature in CCT refers to the black-body radiation. This is actually the emitted light by a solid object heated to the point of incandescence. The CCT value is expressed in degrees Kelvin, which is absolute temperature standard measurement. The emitted light by a black body as it gets hotter progresses through a particular sequence of colors that follows a curve within a color space. Starting from red, the light passes to orange, yellow, white and blue.
For example, The color of the emitted light by an incandescent lamp is around 2700K. This value is toward the reddish or warm scale’s end. Visible light’s spectral analysis allows defining color temperatures for white light sources that are non-incandescent, such as LED lighting and fluorescent tubes. Even if the LED provides same light color as a 2700 K heated filament, it has an actual temperature of around 80C.
There are several standards defining the various light sources’ chromaticity. For example, for LED sources there are 8 nominal CCTs that range from 6500 K (daylight white) to 2700 K (warm white). Among these CCTs, six correspond to the compact fluorescent lamps’ chromaticity specifications, in order to ensure some consistency across various types of light sources. Another two additional CCTs have been defined in order to cover the gaps not accounted for by the CFL chromaticity standard along the curve, since LEDs can produce any variation of the color temperature within the range.
Variațiile CCT permise
An allowable range of tolerance or variation corresponds to each nominal CCT, both perpendicular to the curve and along the curve. Variations along the curve cause the light source to look more bluish or reddish, while those variations that are above and below the black-body curve cause the light to look more pinkish or greenish. These variations along the black body curve are measured in degrees Kelvin, while variations perpendicular to the curve are notated as Duv.
Within each color temperature’s color space, the allowable CCT variations both perpendicular and along to the curve define a quadrangle. The Duv and CCT ranges for the temperature of each color determine each quadrangle’s size.
For instance, the nominal CCT of 3000 K’s quadrangle has a tolerated variance of plus or minus 175 K, being centered on 3045 K. The 3000 K quadrangle covers along the black- body curve from 2870 K to 3220 K. In practice, even if the measured Duv and CCT of LEDs can vary considerably, the values are still considered to have a nominal 3000 K CCT.
Achieving Consistent Color
LEDs vary in lumen, CCT and voltage during the production process. Because these differences can be significant, LEDs are delivered to the market in bins. This binning process makes it possible selecting LEDs that conform to the stated specifications. For example, binning allows selecting LEDs for car lights that meet the American standard when it comes to the specific color required.
Lighting fixture manufacturers develop various methods of selecting LEDs bins in a way that allows minimizing color differences that might be visible from production run to production run or from fixture to fixture.
Some LEDs Manufacturers offer 16 bins for a 2700 K nominal CCT. However, there will always be a certain range of variation in Duv and degrees K from bin to bin. In order to ensure color consistency, some LED lighting manufacturers aim to exceed the standard by adopting standards for LED packaging. For example, Lightstec has designed a sorting mathematical model, called Lightstec bin. This mathematical model guarantees color uniformity across production runs for all led strip lights.
Rather than following the 7-step ellipse of the ANSI standard, LED fixtures’ hue tolerances and Lightstec bins CCT fall within a 4-step MacAdam ellipse. Lightstec bin will use LEDs from bins that are as close as possible to the curve within a 4-step ellipse in order to ensure that the color variations are barely noticeable.
Within a 4-step MacAdam ellipse, there are 4 bins. However, for manufacturing run to manufacturing run it is used only one bin, so the consistency is always within 2 SDCM per batch and per reel.
Proprietary Lightstec bin algorithms are used in order to ensure led strip lights color consistency from batch to batch and reel to reel. It is particularly important to ensuring reliable color consistency over time for expansion and multi-site installations, for phased installations where fixtures are purchased and installed at different times, and in case of fixture failure for color-matching replacement fixtures.
You can check the different from this PDF file:
3 Step Mcadam VS 5 Step Mcadam VS 7 Step Mcadam
What CCT led strip light can we offer?
Lightstec can offer white color temperature of led strip lights from 1900K to 6500K.Check the following photo of different color temperature strip light effect. welcome Email us: [email protected]
Fondator al Lightstec. Gradul de inginerie. Mai mult de 13 ani de experiență în domeniul iluminatului cu led. Cunoscut cu producerea de produse de iluminat cu led. Acest blog vă împărtășește cunoștințele și soluția în domeniul iluminatului cu led. Bun venit la aprovizionarea cu led din China.
Aflați mai multe cursuri profesionale pe care vi le spun mai puțini oameni înainte de a greși.
CCT is led color temperature.It is using for mark the color of the led.Such as warm white, nature white,cool white,etc.
We can offer ultra warm white 1800k, 2400k,warm white 3000k,nature white 4000k, cool white 6500k,10,000k
We offer 3 step Mcadam,then the color will the same in strip light.
14 gânduri pe "Ce temperatură de culoare LED putem oferi”
How are you?
Galaxy LED Batten light with 3 CCT adjustable. Terminal block in end cap got great
feedback from our customers.
How do you think of this batten light?
Dear,nice you are interesting in our cct adjustable led strip light,we will send products detail to you by mail
i was looking on alibaba for led strips adjustable temperature from cool to warm white 5050, 12V voltage, 14,4W/meter.
Can you send me a price list, and do you sending a sample too?
We have cct adjustable led strip light . SMD2835-120LED/M -DC12V and DC24V vision. Color can from 2200K to 6500K.
I will send you price list by mail.
Am găsit compania dumneavoastră prin căutarea pe google și suntem foarte interesați de produsele dumneavoastră.
Could you please send us pricelist for your LED products with terms of payment and other relative information?
Our company “LEDLIGHTPROMER” is one of the leader Russian LED market and specialized in LED-goods distribution.
Aștept cu nerăbdare o cooperare fructuoasă.
Hi Sir,Nice you are interesting in our led lights. Our sales team will following your request.
How are you? I am a private’s business consultant and I do have many clients around the world.
I have one good client that is interested in your product and they are ready to buy large quantity. But I will need 4% commission on whatever they buy and also I near future, if he place any order from your company’ my 4% should be sent to me. If your company agrees then we can do business.
I have attached the company quotation so please go through and get back to me. Meanwhile I will also like to know whether my 4% is acceptable also.
Thank you and hoping to see your mail soon.
Hi Lillian, welcome you have your own business.
let’s check what we can do.
Could you please quote me based on below request from my customer? Pls try to be back to me asap.
UL or ETL Listed Tape Light in 3528 SMD and 5050 SMD LEDs that are jacketed and un-jacketed. Our goal is to offer a complete range of tape light that we would hopefully buy from one source, rather than just the 5050 Jacketed product we are offering now from Wufeng. UL or ETL Listed product is a MUST for us moving forward. We realize that the power supplies are UL Listed, but we want an entire system (drivers and tape light) that is UL Listed.
Hi Jamie, our strip light have FCC ,does it ok for your market ?
We are very interested your some of your led strip.
Could u pls send the datasheet with excel format to us?
Hi Terry , Nice to have your message. Our sales team will contact with you via mail.
we would like to order CRI 90 led strip light. Send me your price.
Hi Flex,we have CRI>90 led strip light, can send you price.