COB light strip changes color temperature principle
December 11, 2023
COB light strip changes color temperature principle
Taking the topic of how cob light strips change color temperature, we first need to understand what cob light strips are and the concept of color temperature. The full name of COB light strip is Chip on Board light strip. It is an integrated circuit packaging technology that directly packages multiple LED chips on the same circuit board. It has the characteristics of uniform light and high brightness. Color temperature refers to the color characteristics of the light source, expressed by an absolute temperature scale with the unit of Kelvin (K). Below we will introduce in detail the principle of changing the color temperature of the cob light strip.
一、The concept and classification of color temperature
Color temperature refers to a physical quantity that refers to the color of light emitted by a light source, usually expressed in Kelvin (K).
The classification of color temperature is generally divided into three levels: warm light, neutral light and cold light. The color temperature of warm light is generally between 2700K and 3500K, and the light emitted appears warmer yellow; the color temperature of neutral light is between 3500K and 5000K, and the light emitted appears neutral white; the color temperature of cold light is above 5000K, and the light emitted appears neutral. The light appears a cooler bluish-white color.
二、 Working principle of COB light strip
COB light strips are realized by packaging multiple LED chips directly on the same circuit board. In a COB strip, the LED chips are connected together through a circuit while being powered by a power source on the circuit board. When the power supply is powered on, current flows through the LED chip, exciting the electrons in the LED chip, causing the electrons to transition and release energy, producing visible light. The number of LED chips in the COB light strip is larger, so it can produce more uniform and high-brightness light.
三、The principle of COB lamp strip changing color temperature
The principle of changing the color temperature of COB light strips is mainly achieved by controlling the proportion of LED chips of different colors emitting light. In COB light strips, LED chips of different colors including warm LED chips, neutral LED chips and cold LED chips are generally used. By controlling the brightness and light-emitting ratio of LED chips of different colors, the color temperature of the light emitted by the COB light strip can be changed.
Specifically, when it is necessary to change the color temperature of the COB light strip, it can be achieved by adjusting the brightness of the LED chips of different colors on the light strip and the proportion of the LED chips of different colors emitting light. By increasing the brightness and proportion of the warm LED chip, the light emitted by the COB light strip can be made to appear warmer yellow, thereby increasing the color temperature; by increasing the brightness and proportion of the cold light LED chip, the light emitted by the COB light strip can be made Appears a cooler bluish-white color, thus lowering the color temperature. By adjusting the brightness and lighting ratio of LED chips of different colors, the color temperature requirements of COB light strips in different scenarios can be achieved.
四、Application of COB lamp strips to change color temperature
The ability of COB light strips to change color temperature makes them widely used in different scenarios. In home lighting, COB light strips can adjust the color temperature of the light emitted according to different activity needs, such as using warmer light when resting at night, and using cooler light when a clear and bright working environment is required. In commercial lighting, COB light strips can adjust the color temperature of the light emitted according to different display needs. For example, warmer light is used in clothing stores to create a warm and comfortable atmosphere, while cooler light is used in jewelry stores. Highlight the brightness and sparkle of jewelry.
Summarize:
COB light strips can change the color temperature of the light emitted by the light strips by controlling the brightness and lighting ratio of LED chips of different colors. This flexible color temperature adjustment capability makes COB light strips widely used in home lighting, commercial lighting and other fields. By rationally using COB light strips, you can create a comfortable, warm or bright and clear lighting environment to meet people's lighting needs in different scenarios.