发明名称 |
PHOTOGRAPHING LENS ASSEMBLY |
摘要 |
A photographing lens assembly 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 positive first lens element has a convex object-side surface. The second and the third lens elements have refractive power. The fourth lens element has positive refractive power. The negative fifth lens element has a convex object-side surface, a concave image-side surface, and at least one inflection point on at least one surface thereof, wherein the surfaces of the fifth lens element are aspheric. The negative sixth lens element has a concave image-side surface and at least one inflection point on at least one surface thereof, wherein the surfaces of the sixth lens element are aspheric. The photographing lens assembly has a total of six lens elements with refractive power. |
申请公布号 |
US2014254029(A1) |
申请公布日期 |
2014.09.11 |
申请号 |
US201313849556 |
申请日期 |
2013.03.25 |
申请人 |
LARGAN PRECISION CO., LTD. |
发明人 |
HSU Po-Lun;TSAI Tsung-Han;HUANG Hsin-Hsuan |
分类号 |
G02B13/18 |
主分类号 |
G02B13/18 |
代理机构 |
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代理人 |
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主权项 |
1. A photographing lens assembly comprising, in order from an object side to an image side:
a first lens element with positive refractive power having a convex object-side surface; a second lens element having refractive power; a third lens element having refractive power; a fourth lens element having positive refractive power; a fifth lens element with negative refractive power having a convex object-side surface and a concave image-side surface, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric, and the fifth lens element has at least one inflection point on at least one of the object-side surface and the image-side surface thereof; and a sixth lens element with negative refractive power having a concave image-side surface, wherein an object-side surface and the image-side surface of the sixth lens element are 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 photographing lens assembly has a total of six lens elements with refractive power, a focal length of the fifth lens element is f5, a focal length of the sixth lens element is f6, an axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD, a maximum image height of the photographing lens assembly is Y, an axial distance between the image-side surface of the sixth lens element and an image plane is BL, and the following relationships are satisfied:
0<f6/f5<1.2; and(TD/Y)+(BL/Y)<1.65. |
地址 |
Tiachung City TW |