OPTICAL SYSTEM FOR CAMERA

PURPOSE: An optical system for a camera is provided to obtain a wide angle with the minimum number of lenses and to reduce manufacturing costs by employing plastic lenses. CONSTITUTION: A first lens(L1) has a negative refractive power and is in a meniscus shape swollen toward an object. A second len...

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Bibliographic Details
Main Authors JUNG, PHIL HO, KIM, DUCK HUN
Format Patent
LanguageEnglish
Korean
Published 07.08.2012
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:PURPOSE: An optical system for a camera is provided to obtain a wide angle with the minimum number of lenses and to reduce manufacturing costs by employing plastic lenses. CONSTITUTION: A first lens(L1) has a negative refractive power and is in a meniscus shape swollen toward an object. A second lens(L2) has a negative refractive power. A third lens(L3) has a positive refractive power, and the object side of the third lens is swollen toward the object. A fourth lens(L4) has a positive refractive power, and the upper side of the fourth lens is swollen upward.
Bibliography:Application Number: KR20110008823