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Field-Curvature Correction According to the Curvature of a CMOS Image-Sensor Using Air-Gap Optimization
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 Title & Authors
Field-Curvature Correction According to the Curvature of a CMOS Image-Sensor Using Air-Gap Optimization
Kwon, Jong-Hoon; Rhee, Hyug-Gyo; Ghim, Young-Sik; Lee, Yun-Woo;
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Lens designers generally refer to flat image fields and attempt to minimize the field curvature. Present-day CMOS image sensors for mobile phone cameras, however, are not flat, but curved. Sometimes it is necessary to generate an intentional field curvature according to the degree and direction of the CMOS image-sensor’s curvature. This paper presents the degree of curvature of a CMOS image sensor measured using an interferometer, and proposes an effective compensation method that minimizes the net field curvature through optimizing the air gap between lens elements, which is demonstrated using simulations and experiments.
Phone camera lens module;Field curvature compensation;Air gap optimization;
 Cited by
모바일 폰 카메라 패키지의 다이 본딩 에폭시가 Warpage와 광학성능에 미치는 영향 분석,손석우;김학용;양호순;

반도체디스플레이기술학회지, 2016. vol.15. 4, pp.1-9
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