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1. CN109239894 - Optical imaging system

Office China
Application Number 201811448647.5
Application Date 28.11.2018
Publication Number 109239894
Publication Date 18.01.2019
Publication Kind A
IPC
G02B 13/00
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
G02B 13/18
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
18with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
CPC
G02B 13/0045
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
001Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
0015characterised by the lens design
002having at least one aspherical surface
0045having five or more lenses
G02B 13/18
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
18with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Applicants ZHEJIANG SUNNY OPTICS CO., LTD.
浙江舜宇光学有限公司
Inventors HUANG LIN
黄林
JI YUNBING
计云兵
Agents 北京英赛嘉华知识产权代理有限责任公司 11204
北京英赛嘉华知识产权代理有限责任公司 11204
Title
(EN) Optical imaging system
(ZH) 光学成像系统
Abstract
(EN)
The invention discloses an optical imaging system. The optical imaging system sequentially includes a first lens, a second lens, a third lens, a fourth lens, a fifth a lens, a sixth lens and a seventhlens along the optical axis from object side to image side, and the first lens, the second lens, the third lens, the fourth lens, the fifth a lens, the sixth lens and the seventh lens have focal power. The first lens has positive focal power and is a lens made of glass. The surface of the object side of the second lens is a convex surface, and the surface of the image side of the second lens is aconcave surface. The fourth lens and the fifth lens both have negative focal power. The aperture value F of the optical imaging system satisfies that the aperture value F is less than1.4.

(ZH)
本申请公开了一种光学成像系统,该成像系统沿着光轴由物侧至像侧依序包括:具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜。第一透镜具有正光焦度,且其为玻璃材质的透镜;第二透镜的物侧面为凸面,像侧面为凹面;第四透镜和第五透镜均具有负光焦度。其中,光学成像系统的光圈值Fno满足Fno<1.4。

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