-
Xuntong specializes in testing services for electrical accessories, consumer electronics, lighting, wireless, toys and other products.
The integrating sphere is a hollow sphere with a white diffuse reflective material on its inner wall, also known as a luminosity sphere, a light-passing sphere, etc. One or more windows are opened on the wall of the ball to be used as light inlet holes and receiving holes for placing light receiving devices.
The inner wall of the integrating sphere should be a good spherical surface. It is usually required that its deviation from the ideal spherical surface should be no more than 0.2% of the inner diameter. The inner wall of the sphere should be coated with an ideal diffuse reflection material, that is, a material with a diffuse reflection coefficient close to 1. The commonly used material is magnesium oxide or barium sulfate. After mixing it with a colloidal adhesive, it is sprayed on the inner wall.
The spectral reflectance of the magnesium oxide coating in the visible spectral range is above 99%. In this way, the light entering the integrating sphere is reflected multiple times by the inner wall coating, forming uniform illumination on the inner wall. In order to obtain high measurement accuracy, the opening ratio of the integrating sphere should be as small as possible. The opening ratio is defined as the ratio of the sphere area at the opening of the integrating sphere to the area of the entire sphere inner wall.
WeChat Consultation
Submission Successful
WeChat Official Account