US 2014/0211327 A1Published application

Optical image lens system

AssigneeLargan Precision Co., Ltd.

InventorsChun-Shan CHEN, Tsung-Han TSAI, Ming-Ta CHOU

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Abstract

An optical image lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The second lens element has positive refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element with refractive power has a convex object-side surface, wherein at least one of two surfaces of the fifth lens element is aspheric. The sixth lens element with negative refractive power has a concave image-side surface, wherein at least one of two surfaces of the sixth lens element is aspheric, and the sixth lens element has at least one inflection point on at least one of the surfaces thereof.

Claims25

Dependent claims

An optical image lens system comprising, in order from an object side to an image side:

a first lens element having positive refractive power;
a second lens element having positive refractive power;
a third lens element having refractive power;
a fourth lens element having refractive power;
a fifth lens element with refractive power having a convex object-side surface, wherein at least one of the object-side surface and an image-side surface of the fifth lens element is aspheric;
and
a sixth lens element with negative refractive power having a concave image-side surface, wherein at least one of an object-side surface and the image-side surface of the sixth lens element is aspheric, and the sixth lens element has at least one inflection point on at least one of the object-side surface and the image-side surface thereof;
wherein the optical image lens system has a total of six lens elements with refractive power, and of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element of the optical image lens system, there is a space in a paraxial region between every pair of lens elements that are adjacent to each other

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/243,886Filed 2 Apr 2014
Priority: TW 10111420420 Apr 2012
Published: 31 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G02B 13/0045
Having at least one aspherical surface: having five or more lenses
G02B 5/005
Optical elements other than lenses: diaphragms
G02B 5/208
Filters: for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
G02B 9/62
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having six…

Family

Application13/652,485Continuation · filed 16 Oct 2012
Application14/243,886Continuation
US 2013/0279021 A1Published application
US 9,354,426 B2Related patent
US 9,488,802 B2Related patent
US 2014/0211327 A1This patent

From the US filing history. Foreign family members aren’t listed.