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Principle of Thin Film Interference 1. The volatility of light In the 1860s, American physicist Maxwell developed the electromagnetic theory, pointing out that light is

The main optical coating devices include reflective film, anti-reflection film, polarizing film, interference filter and beam splitter, etc. They have been widely used in the

At present, there are more than 60 common varieties of optical coating materials, and their varieties and application functions are still being developed. In recent

The optical film is formed by agglomeration of bulk materials on the substrate after solid-liquid-gas-solid or solid-gas-solid transformation, so its microstructure, crystal structure and film

Because the laser has excellent time coherence, its coherence distance can reach several kilometers, so since the advent of the laser, laser interferometer using laser

A polarization beam splitter (PBS) is an optical element that divides a beam of incident light into two beams of light whose propagation directions are

The earliest lens glass was taken from the glass used to make windows at that time. Because its shape is somewhat similar to a crown,

Optical materials are an important part of optical instruments and the objects of optical parts processing. Optical materials include optical glass, optical crystals, and optical

Otto Schott, the father of modern glass material science, is actually a junior in front of Zeiss. In the 1840s, Carl Zeiss had become a

The evaluation criteria for the surface quality of optical components mainly include surface deviation, surface roughness and surface defects. Among them, the surface defects are

Achromatic wave plate Wave plates are generally made of birefringent materials, and the resulting phase retardation is： Among them, n0 and ne are the refractive

Introduction to Telecentric Lenses Telecentric lens, translated from Telecentric Lens. “Tele” is far,  which translates as “centric”. The literal translation of “Telecentric Lens” means “telecentric