PHOTOGRAPHIC LENS OPTICAL SYSTEM
A disclosed photographic lens optical system is sequentially arranged from the object side to the upper surface side, and comprises: a first lens in a meniscus form having negative refractive power and protruding toward the object side; a second lens in a meniscus form having negative refractive pow...
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Main Authors | , , , , |
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Format | Patent |
Language | English Korean |
Published |
03.07.2015
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Subjects | |
Online Access | Get full text |
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Summary: | A disclosed photographic lens optical system is sequentially arranged from the object side to the upper surface side, and comprises: a first lens in a meniscus form having negative refractive power and protruding toward the object side; a second lens in a meniscus form having negative refractive power and protruding toward the object side; a third lens in a meniscus form having positive refractive power and protruding toward the object side; and a fourth biconvex lens having positive refractive power. The optical system satisfies a condition 0.18 < ¦tan / f¦< 0.35 ( , and f are respectively an angle of view and the focal distance of the photographic lens optical system).
개시된 촬영 렌즈 광학계는 물체측에서 상면측으로 순서대로 배열된 것으로, 부의 굴절력을 가지며, 물체측으로 볼록한 메니스커스 형상의 제1렌즈; 부의 굴절력을 가지며, 물체측으로 볼록한 메니스커스 형상의 제2렌즈; 정의 굴절력을 가지며, 물체측으로 볼록한 메니스커스 형상의 제3렌즈; 정의 굴절력을 가지며, 양볼록의 제4렌즈;를 포함하며, 다음 조건을 만족한다. 0.18 < |tan θ / f| < 0.35 여기서, θ 및 f는 각각 상기 촬영 렌즈 광학계의 화각 및 초점거리이다. |
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Bibliography: | Application Number: KR20130162911 |