Compact zoom lens

PURPOSE: A small zoom lens is provided to implement high optical performance and a compact structure by using a small number of lenses. CONSTITUTION: A first lens group(G1) has a negative refractive index. A second lens group(G2) has a positive refractive index. A third lens group(G3) has a negative...

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Bibliographic Details
Main Authors HEU, MIN, PARK, YOUNG WOO
Format Patent
LanguageEnglish
Korean
Published 12.06.2012
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:PURPOSE: A small zoom lens is provided to implement high optical performance and a compact structure by using a small number of lenses. CONSTITUTION: A first lens group(G1) has a negative refractive index. A second lens group(G2) has a positive refractive index. A third lens group(G3) has a negative refractive index. A fourth lens group(G4) has a positive refractive index. A distance between the first lens group and the second lens group is decreased, a distance between the second lens group and the third lens group is increased, and a distance between the third lens group and the fourth lens group is decreased when a wide angle terminal is magnified into a telephoto terminal.
Bibliography:Application Number: KR20100087665