A hollow sphere with a highly reflective inner surface.
A high-efficiency device for collecting light scattering or emission from a specimen either inside or outside a sphere and near a window.
Small Windows on the ball allow light to enter and stay close to the detector.
The integrating sphere, also known as the optical pass sphere, is a hollow and complete spherical shell. The inner wall is coated with a white diffuse layer, and the diffusion is uniform at each point on the inner wall of the ball. The illuminance produced by the light source S at any -point B on the wall of the sphere is the superposition of the illuminance produced by multiple reflected lights.