What is the optical center of a lens?

Among the paraxial rays of the convex lens, the incident rays and the corresponding parallel outgoing rays form a * * * yoke ray. The intersection of the connecting line between the incident point and the outgoing point and the main optical axis is called the focal point of the convex lens, and the point at the center of the lens is called the optical center.

Chinese name

Photo center

Foreign name

optical center

presenter

El Nino Ou Man Misniadi

Applicable field

Photoelectric field

Applied discipline

Physics, optics

Photo center

optical center

The optical center of concave lens is the point where the centers of two refraction surfaces coincide, and it is also the point where the node and the principal point coincide. When the refractive index of the object and the medium in the image space are the same, the incident point and the exit point pass through the optical center of the concave lens.

The intersection of the shooting point connecting line and the main optical axis is called the optical center of the thick lens.

As can be seen from the figure, O is the optical center and F is the focus. There is a special point on the principal axis of each lens, and the propagation direction of light through this point remains unchanged. This point is called the optical center.

Features: the propagation direction of light through the optical center will not change.