Color temperature is a quantity that represents the color table (appearance color expression) of a light source seen by the human eye. When the light emitted by a light source has the same color as the light emitted by a black body at a certain temperature, the temperature is the color temperature. In the field of lighting, color temperature is an important parameter describing the optical properties of a light source. The theory of color temperature is derived from blackbody radiation, which can be obtained from the color coordinates containing the blackbody locus through the color coordinates of the light source.
The color rendering index shows how well the light emitted by a light source accurately reflects the color of the object being illuminated. Usually, the color rendering index Ra is usually used, which is the arithmetic mean of the color rendering index of the light source on eight color samples. As an important parameter to measure the quality of a light source, the color rendering index determines the application scope of the light source. Improving the color rendering index of white light Petrol Car LEDs has become one of the important topics in the research and development of Petrol Car LEDs.
1. Light intensity distribution test
The relationship between light intensity and spatial angle (direction) is called false light intensity distribution, and the closed curve connected by this distribution is called light intensity distribution curve. Because there are many measurement points, and each point is measured with an automatic goniophotometer after data processing.
2. The impact of temperature effect on the optical characteristics of LEDs in Volkswagen Car
Temperature affects the optical properties of Petrol Car LEDs. A large number of experiments can show that temperature affects the emission spectrum and color coordinates of Petrol Car LEDs.
3. Surface brightness measurement
The brightness of a light source in a certain direction is the luminous intensity of the light source per unit projected area in that direction. Generally, a surface brightness meter and a aiming brightness meter are used to measure the surface brightness. The aiming brightness meter consists of a aiming light path and a measuring light path.
1. Light intensity distribution test
The relationship between light intensity and spatial angle (direction) is called false light intensity distribution, and the closed curve connected by this distribution is called light intensity distribution curve. Because there are many measurement points, and each point is measured with an automatic goniophotometer after data processing.
2. The impact of temperature effect on the optical characteristics of LEDs in Volkswagen Car
Temperature affects the optical properties of Petrol Car LEDs. A large number of experiments can show that temperature affects the emission spectrum and color coordinates of Petrol Car LEDs.
3. Surface brightness measurement
The brightness of a light source in a certain direction is the luminous intensity of the light source per unit projected area in that direction. Generally, a surface brightness meter and a aiming brightness meter are used to measure the surface brightness. The aiming brightness meter consists of a aiming light path and a measuring light path.