A microlens array capable of receiving and transmitting ultrasound

A microlens array and microlens technology, applied in the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, material analysis using sound waves/ultrasonic waves/infrasonic waves, instruments, etc., can solve the inconvenient miniaturization and difficult optical and acoustic integration of the same scale Integration, complex optical or acoustic structures, etc., to eliminate multiple reflection attenuation, improve coupling efficiency and detection sensitivity, reduce complexity and laser attenuation

Active Publication Date: 2022-07-08
南昌洋深电子科技有限公司
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  • 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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  • A microlens array capable of receiving and transmitting ultrasound
  • A microlens array capable of receiving and transmitting ultrasound
  • A microlens array capable of receiving and transmitting ultrasound

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Embodiment

[0022] Embodiment: a microlens array capable of receiving and transmitting ultrasound, characterized in that it includes a base plate 1 made of piezoelectric materials with high optical transmittance, an electrode layer 2 with high optical transmittance, and a high optical transmittance. The optical mask layer 3 with reflectivity, and the 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 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 microlenses 4 adopts a 40×40 square arrangement; the microlens 4 adopts a two-dimensional spherical square structure, and the center distance between the microlenses 4 is 250 μm; the The surface of the electrode layer 2 ...

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Abstract

The invention discloses a microlens array capable of receiving and transmitting ultrasound, comprising a base plate made of piezoelectric material with high optical transmittance, an electrode layer with high optical transmittance, and acoustic matching with high optical transmittance layer, optical mask with high optical reflectivity. The microlens array can simultaneously realize two types of optical and acoustic functions, such as optical array microfocusing with large field of view, ultrasonic array transmitting and receiving, and has the advantages of simple structure, small size, light weight, etc., and is convenient for large-area industrial preparation It is expected to be applied to the fields of biometric identification, medical imaging diagnosis, industrial non-destructive testing, and multi-functional underwater inspection robots developed by laser ultrasound technology.

Description

technical field [0001] The invention relates to optical components, in particular to a microlens array capable of receiving and transmitting ultrasound, which is suitable for fields such as biometric identification, medical imaging diagnosis, industrial non-destructive testing, and multifunctional underwater detection robots developed by using laser ultrasound technology. Background technique [0002] Microlens array, also known as fly-eye lens or fly-eye lens, usually consists of a series of micro-lenses with apertures ranging from several microns to hundreds of microns in a certain order, which can be easily fabricated on optically transparent materials such as glass or resin. superior. It not only has the basic functions such as 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, and can form many new optical detectio...

Claims

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Application Information

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Patent Type & AuthorityPatents(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