What is specular reflection?

Specular reflection means that if the reflecting surface is smooth, when parallel incident light hits this reflecting surface, it will still reflect in one direction in parallel. This kind of reflection belongs to specular reflection.

Features:

(1) The reflected wave (electromagnetic wave, or acoustic wave, water wave) in specular reflection has a definite direction; The included angle (reflection angle) between the reflected wave direction and the normal of the reflecting surface is equal to the included angle (incident angle) between the incident wave direction and the normal of the reflecting surface, and the incident wave and the reflected wave are in the same plane.

When taking pictures, it is necessary to avoid the specular reflection light from entering the camera lens. Because the specular reflection light is extremely strong, white bright spots will be formed in the photo, which will affect the appearance of the ground objects themselves in the photo.

(2) Specular reflection follows the law of light reflection.

(3) The nature of specular reflection imaging is vertical and equal in size, and the virtual image is located on the opposite side of the object.

(4) Mirror reflection means that when the incident light is parallel light, it will be reflected on a smooth mirror surface and then emitted as parallel light.