The difference between specular reflection and diffuse reflection

Differences: 1. Different reflecting surfaces: the reflecting surface of specular reflection is smooth; The reflecting surface of diffuse reflection is rough. 2. The reflected light propagates in different directions: for example, when a beam of parallel light is specularly reflected, the reflected light is still parallel light and propagates in a specific direction; If diffuse reflection occurs, the reflected light will spread around.

Physical definition of specular reflection

A beam of parallel light hits a plane mirror, and the reflected light is parallel. This kind of reflection is called specular reflection.

specular reflection refers to the reflection of reflected waves (electromagnetic waves, or acoustic waves, water waves) in a certain direction; The included angle (reflection angle) between the direction of the reflected wave and the normal of the reflection plane is equal to the included angle (incident angle) between the direction of the incident wave and the normal of the reflection plane, and the incident wave, the reflected wave and the normal of the plane are in the same plane. When taking pictures, it is necessary to avoid the mirror reflected light from entering the camera lens. Because the mirror reflected light is extremely strong, a white bright spot will be formed on the photo, which will affect the appearance of the ground object itself on the photo.

specular reflection follows the law of light reflection. The nature of specular reflection imaging is upright, equal, and the virtual image is located on the opposite side of the object.