Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2023/143235
Kind Code:
A1
Abstract:
An optical lens, which in total has six lenses, and which, along an optical axis from an object side to an image plane, sequentially comprises: a first lens (L1) having a negative optical power, the object side surface (S1) and the image side surface (S2) both being concave; a second lens (L2) having a negative optical power, the object side surface (S3) being concave, and the image side surface (S4) being convex; a third lens (L3) having a positive optical power, the object side surface (S5) and the image side surface (S6) both being convex; a fourth lens (L4) having a positive optical power, the object side surface (S7) and the image side surface (S8) both being convex; a fifth lens (L5) having a negative optical power, the object side surface (S9) being concave, and the image side surface (S10) being convex; and a sixth lens (L6) having a positive optical power, the object side surface (S11) being convex, and the image side surface (S12) being concave; the fourth lens (L4) and the fifth lens (L5) are adhered together to form a cemented lens; and the real image height IH corresponding to the maximal field of view and the effective focal length f of the optical lens satisfy: 0.55 < f / IH < 0.65.

Inventors:
CHEN WEIJIAN (CN)
XU YUXUAN (CN)
Application Number:
PCT/CN2023/072560
Publication Date:
August 03, 2023
Filing Date:
January 17, 2023
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JIANGXI LIANCHUANG ELECT CO LTD (CN)
International Classes:
G02B9/62
Domestic Patent References:
WO2021157959A12021-08-12
Foreign References:
CN114114649A2022-03-01
CN212647128U2021-03-02
CN113960754A2022-01-21
CN111352214A2020-06-30
CN111679408A2020-09-18
CN108983401A2018-12-11
CN107783256A2018-03-09
CN111367046A2020-07-03
CN112485889A2021-03-12
Attorney, Agent or Firm:
SHENZHEN ZHIQUAN INTELLECTUAL PROPERTY OFFICE (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: METHOD FOR DETERMINING MASTER AND SLAVE DEVICES IN KEY NEGOTIATION PROCESS, AND RELATED APPARATUS

Next Patent: 2H-INDAZOLE-7-FORMAMIDE COMPOUND, PREPARATION METHOD, PHARMACEUTICAL COMPOSITION, AND APPLICATION