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With the continuous development of science and technology, people's living standards have also risen to a new well-off era. There are more and more highways, urban roads and vehicles, so there are...

1. Optical properties of transparent optical materials (transmissive materials)It is mainly determined by the transmittance and refractive index of various colors of light, and most of the optical par...

Commonly used optical filter cleaning methods are:Ⅰ. Solvent cleaning of optical filtersCommonly used solvents are aqueous solutions (acid or alkali solutions, detergent aqueous solutions, etc.); anh...

Before cleaning the surface of the optical filter, the cleanliness of the glass surface must be checked, and the cleaning method should be selected based on this. Commonly used inspection methods are:...

Ⅰ. Reasons affecting the performance of narrow band optical filterThere are a certain number of pores in the film. Before the film is not absorbent, the pores in the film are filled by air and the re...

1. What is a narrow band optical filter?The so-called narrow band optical filter is subdivided from the bandpass filter. Its definition is the same as that of bandpass filter: this filter allows light...

1. What is the plano convex lens?The plano convex lens is a positive lens in the optical system, whose main functions are beam expansion, imaging, beam collimation, focus collimation, the collimation ...

1. What is the plane concave lens?Plane concave lens is a negative lens with a negative focal length, and the parallel light beam will diverge after incident on the plane concave lens. The outgoing li...