Imaging Principles of LED Optical Systems

Optical imaging is the process of converting optical information on an object into an image through an optical system. An optical system is composed of multiple optical devices, such as lenses, prisms, reflectors, etc., the most basic of which is a lens. The imaging principle of LED Optical Systems is based on the basic laws of light propagation, refraction, and reflection, and the imaging of objects is achieved through the combination of lenses and optical devices.

The imaging principle of LED Optical Systems can be divided into two situations: convex lens imaging principle and concave lens imaging principle.

The principle of concave convex lens imaging

The principle of convex lens imaging mainly involves the direction of the image. When the object is located on the left side of the lens focus, the image formed by the refraction of light through the lens is located on the right side of the lens; When the object is located on the right side of the lens focus, the image formed by the refraction of light through the lens is located on the left side of the lens. If the object is located at the focal point of the lens, the light rays after imaging will be parallel and there will be no deviation in the light path.

The principle of concave lens imaging is also similar. However, due to the spherical aberration of concave lenses, they are rarely used in practical applications.

Propagation of light path

The basis of imaging principle is the propagation of incident light along a traceable optical path. The factors that affect the optical path in LED Optical Systems include the refractive index of imaging optical devices, the possible scattering of light when passing through optical devices, and so on. We can predict the propagation and imaging of light in optical devices through classical geometrical optics or radiation metrology.

The imaging principle of LED Optical Systems is based on the basic laws of light propagation, refraction, and reflection, and the combination of optical devices such as lenses is used to achieve the imaging of objects. Understanding and mastering the imaging principles of LED Optical Systems is of great significance for the design and application of LED Optical Systems.