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US 9,429,688 B2Granted
Image capturing device having lens with low lens sag
AssigneeHimax Technologies Limited
InventorsYin-Dong Lu, Chuan-Hui Yang
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Abstract
An image-capturing lens is disclosed in the disclosure. The image-capturing lens includes a central portion and a periphery portion. The central portion includes a plurality of optical elements arranged in a circular fashion, and each of the optical elements differs in thickness. The periphery portion extends peripherally from the central portion and has a constant thickness. The thickness of the periphery portion is smaller than a thickness of one of the plurality of optical elements that is approximate to the periphery portion.
Claims9
A lens module, comprising:
- a first image-capturing lens comprising:
- a first central portion comprising a plurality of first optical elements arranged in a circular fashion, wherein each of the plurality of first optical elements differs in thickness;
- and
- a first periphery portion extending peripherally from the first central portion and having a constant thickness, wherein the thickness of the first periphery portion is smaller than a thickness of one of the plurality of first optical elements that is approximate to the first periphery portion;
- and
- a second image-capturing lens, wherein the first and second image-capturing lenses are arranged in the same optical axis;
- wherein the first image-capturing lens and the second image-capturing lens are arranged in order from an image side to an object side of the lens module, and the first optical elements are adjacent to the image side;
- wherein the second image-capturing lens comprises:
- a second central portion having varying thicknesses;
- and
- a second periphery portion extending peripherally from the second central portion and having a constant thickness, wherein a width of the first central portion is larger than a width of the second central portion.
8 more elements
An image-capturing device, comprising
- a lens module comprising a plurality of image-capturing lenses;
- and
- an image sensor for receiving light passing through the lens module, wherein a first image-capturing lens of the image-capturing lenses which is closest to the image sensor comprises a Fresnel lens;
- the first image-capturing lens comprising:
- a first central portion, wherein the Fresnel lens is formed on the central portion;
- and
- a first periphery portion extending peripherally from the first central portion and having a constant thickness;
- and
- the others of the image-capturing lenses of the lens module comprises:
- a second image-capturing lens comprising:
- a second central portion having varying thicknesses;
- and
- a second periphery portion extending peripherally from the second central portion and having a constant thickness, wherein a width of the first central portion is larger than a width of the second central portion,
- wherein the first and second image-capturing lenses are arranged in the same optical axis.
11 more elements
A lens module, comprising:
- a plurality of image-capturing lenses arranged along an optical from an object side to an image side;
- wherein a first image-capturing lens of the image-capturing lenses which is closest to the image side comprises:
- a first central portion, comprising a Fresnel lens;
- and
- a first periphery portion extending peripherally from the first central portion and having a constant thickness;
- wherein a second image-capturing lens of the image-capturing lenses comprising:
- a second central portion having varying thicknesses;
- and
- a second periphery portion extending peripherally from the second central portion and having a constant thickness, wherein a width of the first central portion is larger than a width of the second central portion.
6 more elements
Dependencies are inferred from the claim text.