Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
OPTICAL SYSTEM, IMAGE CAPTURING DEVICE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/087669
Kind Code:
A1
Abstract:
An optical system, an image capturing device and an electronic device. The optical system comprises, in order from the object side to the image side along an optical axis: a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), a fifth lens (L5), a sixth lens (L6) and a seventh lens (L7); the first lens (L1) has a positive refractive power, the object side surface (S1) thereof is convex at the optical axis, and the image side surface (S2) thereof is concave at the optical axis; the second lens (L2) has a positive refractive power, and the object side surface (S3) thereof is convex at the optical axis; the third lens (L3) has a negative refractive power, the object side surface (S5) thereof is convex at the optical axis, and the image side surface (S6) thereof is concave at the optical axis; the fifth lens (L5) has a positive refractive power, and the image side surface (S10) thereof is convex at the optical axis; the seventh lens (L7) has a negative refractive power, and the image side surface (S14) thereof is concave at the optical axis. The optical system satisfies the following relationship: TTL/ImgH<1.3, wherein TTL is the distance from the object side surface (S1) of the first lens (L1) to an imaging plane (S17) of the optical system on the optical axis, and ImgH is half of the diagonal length of an effective pixel region on the imaging plane (S17) of the optical system.

More Like This:
JP6501955Imaging optical lens
WO/2020/015818A PROTRUDING AND FOLDING CAMERA SYSTEM FOR A PORTABLE ELECTRICAL DEVICE
JP6836142Imaging optical system and imaging device
Inventors:
YANG JIAN (CN)
LI MING (CN)
Application Number:
PCT/CN2019/115349
Publication Date:
May 14, 2021
Filing Date:
November 04, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NANCHANG OUFEI PREC OPTICAL PRODUCT CO LTD (CN)
International Classes:
G02B13/00; G02B9/64; G02B11/34
Domestic Patent References:
WO2015159721A12015-10-22
Foreign References:
CN108089317A2018-05-29
CN107102425A2017-08-29
CN110618522A2019-12-27
TWI655474B2019-04-01
TWI640811B2018-11-11
CN109283665A2019-01-29
CN106842512A2017-06-13
CN110398815A2019-11-01
CN106896474A2017-06-27
Other References:
See also references of EP 3896510A4
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: WET-DRY VACUUM CLEANER DEVICE

Next Patent: FIXING ASSEMBLY FOR ELECTRONIC CIGARETTE AND METHOD FOR FIXING ELECTRONIC CIGARETTE COMPONENT