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Image capturing optical lens system

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Image capturing optical lens system


This invention provides an optical lens system comprising: a first lens element with positive refractive power; a second lens element with negative refractive power; a third lens element with negative refractive power having a concave object-side surface and at least one of the object-side surface and the image-side surface thereof being aspheric; a plastic fourth lens element having at least one of the object-side surface and the image-side surface thereof being aspheric; a plastic fifth lens element having a concave image-side surface, at least one of the object-side surface and the image-side surface thereof being aspheric, and at least one inflection point is formed on at least one of the object-side surface and the image-side surface thereof. By such arrangement, photosensitivity and total track length of the system can be reduced, and the aberration and astigmatism of the system can be effectively corrected. Moreover, high image resolution can be obtained.

Browse recent Largan Precision Co., Ltd. patents - Taichung, TW
Inventors: Hsiang-Chi Tang, Ming-Ta Chou, Tsung-Han Tsai
USPTO Applicaton #: #20120314302 - Class: 359714 (USPTO) - 12/13/12 - Class 359 


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The Patent Description & Claims data below is from USPTO Patent Application 20120314302, Image capturing optical lens system.

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stats Patent Info
Application #
US 20120314302 A1
Publish Date
12/13/2012
Document #
File Date
09/30/2014
USPTO Class
Other USPTO Classes
International Class
Drawings



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