Design of hybrid lens for compact camera module considering diffraction effect

Hyun Choi; Yong Joong Yoon; Byungwook Kim; Sang Hyuck Lee; Wan Chin Kim; No Cheol Park; Young Pil Park; Shinill Kang

doi:10.1143/JJAP.47.6678

Design of hybrid lens for compact camera module considering diffraction effect

Hyun Choi, Yong Joong Yoon, Byungwook Kim, Sang Hyuck Lee, Wan Chin Kim, No Cheol Park, Young Pil Park, Shinill Kang

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We introduce the design method of a hybrid lens composed a refractive lens and a diffractive optical element (DOE) considering the diffraction effect for a compact camera module. When imaging optical system is designed using the DOE, diffraction efficiency of the DOE and stray light due to the unintended diffraction light should be considered. Therefore, to analyze the effect of diffraction efficiency of the DOE on image characteristics, we evaluate the performances of two designed compact camera lenses, which have different construction wavelengths, using the modulation transfer function (MTF) considering diffraction efficiency. The stray light that is induced by the diffraction effect of the DOE is analyzed by calculating the focal position according to each diffraction order, and a method for the reduction of the stray light is proposed.

Original language	English
Pages (from-to)	6678-6682
Number of pages	5
Journal	Japanese journal of applied physics
Volume	47
Issue number	8 PART 2
DOIs	https://doi.org/10.1143/JJAP.47.6678
Publication status	Published - 2008 Aug 22

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.47.6678

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title = "Design of hybrid lens for compact camera module considering diffraction effect",

abstract = "We introduce the design method of a hybrid lens composed a refractive lens and a diffractive optical element (DOE) considering the diffraction effect for a compact camera module. When imaging optical system is designed using the DOE, diffraction efficiency of the DOE and stray light due to the unintended diffraction light should be considered. Therefore, to analyze the effect of diffraction efficiency of the DOE on image characteristics, we evaluate the performances of two designed compact camera lenses, which have different construction wavelengths, using the modulation transfer function (MTF) considering diffraction efficiency. The stray light that is induced by the diffraction effect of the DOE is analyzed by calculating the focal position according to each diffraction order, and a method for the reduction of the stray light is proposed.",

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AU - Choi, Hyun

AU - Yoon, Yong Joong

AU - Kim, Byungwook

AU - Lee, Sang Hyuck

AU - Kim, Wan Chin

AU - Park, No Cheol

AU - Park, Young Pil

AU - Kang, Shinill

PY - 2008/8/22

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N2 - We introduce the design method of a hybrid lens composed a refractive lens and a diffractive optical element (DOE) considering the diffraction effect for a compact camera module. When imaging optical system is designed using the DOE, diffraction efficiency of the DOE and stray light due to the unintended diffraction light should be considered. Therefore, to analyze the effect of diffraction efficiency of the DOE on image characteristics, we evaluate the performances of two designed compact camera lenses, which have different construction wavelengths, using the modulation transfer function (MTF) considering diffraction efficiency. The stray light that is induced by the diffraction effect of the DOE is analyzed by calculating the focal position according to each diffraction order, and a method for the reduction of the stray light is proposed.

AB - We introduce the design method of a hybrid lens composed a refractive lens and a diffractive optical element (DOE) considering the diffraction effect for a compact camera module. When imaging optical system is designed using the DOE, diffraction efficiency of the DOE and stray light due to the unintended diffraction light should be considered. Therefore, to analyze the effect of diffraction efficiency of the DOE on image characteristics, we evaluate the performances of two designed compact camera lenses, which have different construction wavelengths, using the modulation transfer function (MTF) considering diffraction efficiency. The stray light that is induced by the diffraction effect of the DOE is analyzed by calculating the focal position according to each diffraction order, and a method for the reduction of the stray light is proposed.

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Design of hybrid lens for compact camera module considering diffraction effect

Abstract

All Science Journal Classification (ASJC) codes

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