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액체와 DHM을 이용한 소형 광학부품의 굴절률 및 형상측정

Determining the Refractive Index and Three-Dimensional Shape of an Optical Component using Digital Holographic Microscopy with Liquid

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주제분류물리학

초록

디지털 홀로그래피 현미경은 기준광과 시료의 굴절률과 두께에 의한 물체광의 광 경로차를 측정하여 3차원 형상을 측정하는방법이다. 대량 생산을 위해 사용되는 사출방법을 이용한 광학제품은 공정 조건에 의해 굴절률과 같은 물성이 변화한다. 소형사출 광학제품의 정확한 광학적 기능을 디자인하기 위해서는 물질의 굴절률과 3차원 형상을 정확히 측정 할 필요가 있다. 본연구에서는 2개의 액체와 투과형 디지털 홀로그래피 현미경을 이용하여 사출된 소형 코너 큐브의 굴절률과 3차원 형상을 측정하는 연구를 하였다.

Abstract

In this study a method is proposed for measuring both the refractive index and the shape of a transparent object. The proposedmethod combines a digital holographic microscope with a liquid. The holograms of a sample immersed in different liquids arerecorded and then the three-dimensional phase information of the sample is reconstructed numerically. In particular, we haveproposed a theoretical model for determining both the refractive index and shape of a sample, and micro-corner cubes areexamined experimentally.

참고문헌 (20)

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