As an LED strip manufacturer, we often encounter a common but puzzling issue: the color temperature of non-waterproof LED strips shifts after installation in aluminum channels with PC covers. For example, a 2800K LED strip may drop to 2700K once installed. This phenomenon can affect the final lighting effect and customer satisfaction. In this article, we’ll explore why this happens and provide practical solutions to address the issue.
The Problem: Color Temperature Shift in LED Strips
LED strips are designed to emit light at a specific color temperature, such as 3000K for warm white. However, when these strips are installed in aluminum channels with PC (polycarbonate) covers, the final color temperature can shift. In this case, the 3000K light may appear closer to 2850K, resulting in a warmer tone than intended.
See the following test:
1). IP20 COB LED Strip Light CCT: 2968K
2). Installed the IP20 COB LED Strip Light into the Aluminium profile with transparent Cover, CCT: 2966K
3). Installed the IP20 COB LED Strip Light into the Aluminium profile with Opal PC Cover, CCT: 2835K
This shift occurs due to the interaction between the LED light and the materials used in the installation:
- PC Cover’s Light Transmission Properties
PC covers are not perfectly transparent and may absorb or scatter certain wavelengths of light. If the PC material absorbs more blue light (which is common in warmer color temperatures), the overall light output will appear warmer, causing the color temperature to drop.
- Color Tint of the PC Cover
Some PC covers have a slight yellow or warm tint, which can further absorb blue light and shift the color temperature toward the warmer end of the spectrum.
- Light Scattering Effect
The PC cover can scatter the light, changing its path and distribution. This scattering effect can make the light appear softer and slightly warmer, altering the perceived color temperature.
- Reflectivity of the Aluminum Channel
The aluminum channel’s reflective properties can also play a role. If the aluminum reflects light with a warm tone, it can amplify the color temperature shift.
Solutions to Prevent Color Temperature Shift
To ensure that your LED strips maintain their intended color temperature, consider the following solutions:
1. Adjust the Initial Color Temperature of the LED Chips
If the PC cover and aluminum channel consistently cause a 100K drop in color temperature, you can compensate by using LED chips with a slightly higher initial color temperature. For example, if the target is 2800K, use 2900K chips to account for the shift.
2. Optimize the PC Cover Material
Choose PC covers with high light transmittance and neutral color properties. This minimizes the absorption of specific wavelengths and reduces the impact on color temperature.
3. Conduct Pre-Production Testing
Before mass production, test the LED strips in the intended aluminum channels and PC covers. Measure the final color temperature and adjust the design or materials as needed to achieve the desired result.
4. Use High-Reflectivity Aluminum Channels
Select aluminum channels with high reflectivity and a neutral surface finish. This ensures that the reflected light does not introduce additional color temperature shifts.
5. Educate Customers on Installation Effects
Inform your customers about the potential for color temperature shifts when using aluminum channels and PC covers. Provide guidelines on how to achieve the desired lighting effect, such as recommending specific materials or configurations.
Conclusion
The color temperature shift in LED strips installed in aluminum channels with PC covers is a common issue, but it can be effectively managed with the right approach. By understanding the causes and implementing the solutions outlined above, you can ensure that your LED products deliver consistent and accurate color temperatures, meeting customer expectations and enhancing your brand’s reputation.
If you’re looking for high-quality LED strips and accessories designed to minimize color temperature shifts, AIDIWATT Lighting Co., Ltd. is here to help. Contact us today to learn more about our products and solutions!
