Micro-lens array capable of receiving and transmitting ultrasound

A microlens array and microlens technology, which is applied in the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, the use of sound waves/ultrasonic waves/infrasonic waves for material analysis, instruments, etc., can solve the inconvenience of miniaturization, complex optical or acoustic structures, and difficult to The integration of optics and acoustics at the scale can achieve the effects of eliminating multiple reflection attenuation, reducing complexity and laser attenuation, and improving coupling efficiency and detection sensitivity

Active Publication Date: 2019-12-20
南昌洋深电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the laser ultrasonic testing systems of the latter two modes are composed of two independent systems of laser and ultrasonic, and most of the optical or acoustic structures are complex and inconvenient to realize miniaturization, and it is difficult to truly realize the integration of optics and acoustics on the same scale

Method used

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  • Micro-lens array capable of receiving and transmitting ultrasound
  • Micro-lens array capable of receiving and transmitting ultrasound
  • Micro-lens array capable of receiving and transmitting ultrasound

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Experimental program
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Embodiment

[0022] Embodiment: A kind of microlens array that can receive and emit ultrasound, it is characterized in that, comprises the base substrate 1 that adopts the piezoelectric material of high optical transmittance to make, has the electrode layer 2 with high optical transmittance, has high optical transmittance An optical mask layer 3 with reflectivity, and an acoustic matching layer 6 with high optical transmittance.

[0023] Further, the base base plate 1 selects a PMNT single crystal material with high optical transmittance; the base base plate 1 is engraved with a 10mm×10mm array composed of microlenses 4 with a diameter of 250 μm and a radius of curvature of 835 μm, and a single microlens 4 The effective focal length of the microlens 4 is less than 1.8mm; the array of the microlens 4 adopts a 40×40 square arrangement; the microlens 4 adopts a two-dimensional spherical square structure, and the center distance between each microlens 4 is 250 μm; The surface of the electrode ...

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Abstract

The invention discloses a micro-lens array capable of receiving and transmitting ultrasound. The micro-lens array comprises a base substrate made of a piezoelectric material with high optical transmittance, an electrode layer with high optical transmittance, an acoustic matching layer with high optical transmittance, and an optical mask with high optical reflectivity. The micro-lens array can simultaneously realize two types of functions such as optical array microscopic focusing, ultrasonic array type transmitting and receiving and the like of a large field of view, has the advantages of simple structure, small volume, light weight and the like, is convenient for large-area industrial preparation and system integration, and is expected to be applied to the fields of biological identity recognition, medical imaging diagnosis, industrial nondestructive detection, multifunctional underwater detection robots and the like developed by adopting a laser ultrasonic technology.

Description

technical field [0001] The invention relates to optical components, in particular to a microlens array capable of receiving and emitting ultrasound, which is applicable to fields such as biological identification, medical imaging diagnosis, industrial nondestructive testing, and multifunctional underwater detection robots developed by laser ultrasound technology. Background technique [0002] Microlens array, also known as fly-eye lens or fly-eye lens, is usually an array composed of a series of tiny lenses with apertures ranging from a few microns to hundreds of microns in a certain order, and can be easily fabricated on optically transparent materials such as glass or resin. superior. It not only has the basic functions of focusing and imaging of traditional optical lenses, but also has the characteristics of small unit size and high integration, which enables it to complete functions that traditional optical components cannot complete, and can constitute many new optical ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01N21/17G01N21/01G01N29/06G01N29/24
CPCG01N21/1702G01N21/01G01N29/0681G01N29/2418G01N2021/1708
Inventor曾吕明纪轩荣吴俊伟邓丽军朴忠烈丁宇周阳
Owner南昌洋深电子科技有限公司