Title:
PHOTOGRAPHING OPTICAL SYSTEM AND OPTICAL PHOTOGRAPHING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/183509
Kind Code:
A1
Abstract:
An optical system (10), being small and capable of maintaining sufficient imaging performance, and obtaining a large angle of visual field. The optical system (10) comprises: a first lens (11), having negative diopter, wherein the image-side surface (11b) of the first lens is a concave surface; a second lens (12), having negative diopter, wherein the image-side surface of the second lens is a concave surface (12b); a third lens (13), having positive diopter, wherein the image-side surface (13b) of the third lens is a concave surface; a fourth lens (14), having positive diopter, wherein the image-side surface (14b) of the fourth lens is a convex surface; a fifth lens (15), having positive diopter, wherein the object-side surface (15a) of the fifth lens is a concave surface, and the image-side surface (15b) of the fifth lens is a convex surface; a sixth lens (16), having negative diopter, wherein the object-side surface (16a) of the sixth lens is a concave surface, and the image-side surface (16a) of the sixth lens is a convex surface; and a seventh lens (17), wherein the seventh lens is an aspheric lens, the center portion (171a) of the object-side surface (17a) of the seventh lens is a convex surface, the center portion (171b) of the image-side surface (17b) of the seventh lens is a concave surface, and the peripheral portions (172a, 172b) of the center portions (171a, 171b) of the object-side surface (17a) and the image-side surface (17b) have at least one inflection point.
More Like This:
| JP6422224 | Compound eye optics |
| JP2008181638 | COUPLING OPTICAL SYSTEM, OPTICAL ELEMENT AND OPTICAL PICKUP DEVICE |
| JP2024035865 | Large aperture ratio optical system |
Inventors:
ARITA SHINICHI (JP)
HOU XIANCHANG (CN)
HOU XIANCHANG (CN)
Application Number:
PCT/CN2021/079395
Publication Date:
September 09, 2022
Filing Date:
March 05, 2021
Export Citation:
Assignee:
BEIJING XIAOMI MOBILE SOFTWARE CO LTD (CN)
International Classes:
G02B13/00; G02B9/64; G02B13/18
Foreign References:
| CN111566536A | 2020-08-21 | |||
| CN108732727A | 2018-11-02 | |||
| CN109765678A | 2019-05-17 | |||
| CN110045486A | 2019-07-23 | |||
| CN111736299A | 2020-10-02 | |||
| US20160139372A1 | 2016-05-19 | |||
| CN107577031A | 2018-01-12 | |||
| CN107305274A | 2017-10-31 | |||
| CN108732716A | 2018-11-02 | |||
| CN107957621A | 2018-04-24 |
Attorney, Agent or Firm:
FASHENG INTELLECTUAL PROPERTY COMPANY, LTD. (CN)
Download PDF: