Have you ever noticed that one day, the color of the light emitHave you ever noticed that one day, the color of the light emitted by your lamp suddenly changed?
This is actually a common issue that many people encounter. As LED product manufacturers, we are often asked about this problem.
This phenomenon is known as color deviation or color maintenance and chromaticity shift, which has been a long-standing issue in the lighting industry.
Color deviation is not unique to LED light sources. In fact, it can occur in any light source that uses phosphors and/or gas mixturees to produce white light, including fluorescent lamps and metal halide lamps.
For a long time, color deviation has been a problem that plagues electricFor a long time, color deviation has been a problem that plagues electric lighting and outdated technologies such as metal halide lamps and fluorescent lamps.
It is not uncommon to see a row of light fixtures where each fixture produces slightly different colors after only running for a few hundred hours.
In this article, we will tell you about the causes of color deviation in LED lights and simple methods to avoid it.
Causes of Color Deviation in LED Lights:
- LED Lamps
- Control System and Driver IC
- Production Process
- Improper Use
LED Lamps
(1) Inconsistent chip parameters
If the chip parameters of an LED lamp are not consistent, it may result in differences in color and brightness of the emitted light.
(2) Defects in encapsulant material
If there are defects in the encapsulant material of an LED lamp, it may affect the lighting effect of the lamp beads, leading to color deviation in the LED lamp.
(3) Errors in die bonding position
During the production of LED lamps, if there are errors in the positioning of the die bonding, it may affect the distribution of light rays, resulting in different colored lights emitted by the LED lamp.
(4) Errors in color separation process
In the process of color separation, if there are errors, it may result in uneven color distribution of the light emitted by the LED lamp, causing color deviation.
(5) Power supply issues
Due to technical limitations, some manufacturers may overestimate or underestimate the power supply and power consumption of their products, resulting in poor adaptability of the produced products to the power supply. This can lead to uneven power supply and cause color deviation.
(6) Lamp bead arrangement issue
Before filling the LED module with glue, if alignment work is carried out, it may make the arrangement of lamp beads more orderly. However, it may also cause disorderly misalignment of lamp beads and uneven color distribution, resulting in color deviation in the module.
Control System and Driver IC
If the design, development, testing, and production capabilities of the control system or driver IC are insufficient, it may also cause changes in the color of the LED display screen.
Production Process
For example, welding quality issues and poor assembly processes can all lead to color deviation in LED display modules.
Improper Use
When LED lights are working, LED chips continuously generate heat. Many LED lights are installed in a very small fixed device. If the lights work 24 hours a day for more than a year, excessive use can affect the color temperature of the chip.
How to avoid LED color deviation？
Color deviation is a relatively common phenomenon, and we can provide several simple methods to avoid it:
1. Choose high-quality LED products
By purchasing LED lighting products from reputable suppliers or those with CCC or CQC certifications, you can greatly reduce color temperature changes caused by quality issues.
2. Consider using intelligent lighting fixtures with adjustable color temperatures
This allows you to adjust the color temperature and brightness as needed. Some LED lighting fixtures on the market have the ability to adjust color temperature, through circuit design, the color temperature of the lamp can either change with the change in brightness or remain unchanged despite changes in brightness.
3. Avoid using excessively high brightness levels for prolonged periods of time
To reduce light source degradation. Therefore, we recommend users to choose appropriate color temperatures for suitable scenarios, if they are unsure about how to select a color temperature, they can refer to the previous issue (What is the Best Color Temperature for LED Lighting).
4. Regularly inspect and maintain LED lighting fixtures to ensure their proper functioning.
Summary
We believe that you have gained a general understanding of the causes of color deviation in LED lights and simple methods to avoid it.
If you are looking to purchase high-quality LED lights, Chiswear is always ready to serve you.Schedule your free lighting consultation today.
Post time: Dec-04-2023