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US 9,753,243 B2Granted
Plastic barrel, optical lens assembly, imaging apparatus and electronic device
AssigneeLargan Precision Co., Ltd.
InventorMing-Ta Chou
Life of this patent
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Abstract
A plastic barrel includes an object-end portion, an image-end portion and a tube portion. The object-end portion includes an object-end surface and an object-end hole, wherein the object-end surface includes a plurality of annular grooves, which are disposed coaxially to a central axis, and each of the annular grooves includes a stepped surface. The image-end portion includes an image-end opening. The tube portion connects the object-end portion and the image-end portion.
Claims19
A plastic barrel, comprising:
- an object-end portion comprising an object-end surface and an object-end hole, wherein the object-end surface comprises a plurality of annular grooves, which are disposed coaxially to a central axis, each of the annular grooves comprises a stepped surface, and the stepped surface of each of the annular grooves comprises a plurality of orthogonal stepped surfaces orthogonal to the central axis;
- an image-end portion comprising an image-end opening;
- and
- a tube portion connecting the object-end portion and the image-end portion;
- wherein a sum of the orthogonal stepped surfaces of every of the stepped surfaces is ΣN, and the following condition is satisfied:
- 7≦ΣN.
3 more elements
An optical lens assembly, comprising:
- a plastic barrel, comprising:
- an object-end portion comprising an object-end surface and an object-end hole, wherein the object-end surface comprises a plurality of stepped surfaces disposed coaxially to a central axis, and each of the stepped surfaces comprises a plurality of orthogonal stepped surfaces orthogonal to the central axis;
- an image-end portion comprising an image-end opening;
- and
- a tube portion connecting the object-end portion and the image-end portion;
- and
- a lens module disposed in the plastic barrel and comprising a plurality of lens elements;
- wherein a diameter of the object-end hole is φo, a sum of the orthogonal stepped surfaces of every of the stepped surfaces is ΣN, and the following conditions are satisfied:
- φo<4.5 mm;
- and
- 7≦ΣN.
8 more elements
Dependencies are inferred from the claim text.