2 minutes to understand the principle of the microstructure array lens

Introduction to the microstructure array len
Microstructure array lenses are formed by nanoscale sub-lenses arranged in a certain order. Since each sublens in the microstructure array lens has an independent optical axis, a main optical axis is formed. Therefore, compared with the traditional compound eye single lens, the microstructure array lens has extremely high parallelism, and each sub-lens can transmit the light source independently of each other without interfering with each other. 

Microstructure array lens product display diagram:

Application areas for microstructure array lenses

Microstructure array lenses are mainly customized production, including beam shaping, beam homogenization, optical fiber coupling, 3 D imaging, etc., and also used in medical treatment, wavefront sensors, optical communication, laser optics, measurement, etc.

How does a microstructure array lens achieve uniform light?

A: For traditional optical components, microstructure array lenses pay more attention to the unification of customer system and diversity. They can be professionally evaluated and customized according to the different needs of customers for light spots. It not only has the basic functions such as focusing and imaging, but also has the characteristics of small sublens size and high integration, which can realize the effect that the traditional optical components cannot achieve. It is the core device of many new optical systems. Thus playing an indispensable role in the optical field. The following is a brief description of one of the principles of microstructure array lenses.

Schematic diagram of microstructure array lens homogenization:

As shown, when the laser shines each independent small lens, each small lens can unify the light and finally present.

What are the categories of microstructure array lenses? What advantages do they each have?

A: Microstructure array lenses are mainly divided into two types of refractive microlens arrays and diffraction microlens arrays.

The principle of refractive microlens arrays is similar to the refractive principle of geometric optics, with light in the junction of the two transparent media, which will bend to the area of high refractive index. The higher the refractive index of the material, the stronger the ability of the incident light to undergo refraction. The main applications are light spot shaping and beam conversion.

Optical path design effect drawing:

(2) The diffraction microlens array is similar to the diffraction principle of physical optics. The laser diffracts after each small lens, and produces interference at a certain distance to form a specific light intensity distribution. It is mainly used in optical communication and medical cosmetology fields.

With the continuous development of optical technology, microstructure array lenses will increase the conditions to achieve customization and spot diversification effects on the basis of traditional optics, and we believe that microstructure array lenses will increase year by year in future laser applications.