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KMID : 1011420130180040503
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Journal of Korean Ophthalmic Optics Society
2013 Volume.18 No. 4 p.503 ~ p.507
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The Design of Wide Angle Mobile Camera Corrected Optical Distortion for Peripheral Area
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Kim Se-Jin
Jeong Hye-Jung
Lim Hyeon-Seon
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Abstract
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Purpose:This study was to design wide angle mobile camera corrected optical distortion for peripheral area,
which were reduced optical distortion and TV distortion by using 4 aspherical lenses.
Methods:The optical design was satisfied with ±1% optical distortion in viewing angle of 95o and total length of optical system was less than 4.5 mm which was considering a thickness of mobile camera. 1/3.2 inch (5M) CCD sensor was used in the optical system and set design condition to satisfy MTF which was over than 20% in 140 lp/mm.
Results: Optimized wide angle mobile camera showed ±1% optical distortion in full field of 95o viewing angle and TV distortion was 0.46% so that distortion of peripheral area was reduce. MTF showed over than 20% in every field.
Ray aberration and astigmatism were small amount so that it showed stable performance.
Conclusions:Obtain wider and clearer view which is reduced image distortion of surrounding area via optical method in wide angle mobile camera which has wider view angle than current mobile camera. And it was able to fix a demerit when it occurred via software correction. It is able to apply to study of camera which is related to spectacles.
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KEYWORD
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Wide angle , Mobile camera , Distortion
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