Title:
OPTICAL SYSTEM AND VIDEO GLASSES
Document Type and Number:
WIPO Patent Application WO/2022/213381
Kind Code:
A1
Abstract:
An optical system (10) and video glasses (100), the optical system (10) comprising a first lens (101) having a positive focal power, a second lens (102) having a negative focal power, a third lens (103) having a positive focal power, a fourth lens (104) having a positive focal power, and a fifth lens (105) having a negative focal power, which are all sequentially disposed from the image side to the object side. The optical system (10) satisfies the expression: 1.7≤N1≤1.9, V1≥37, V4≥37 and 15≤V5≤24, wherein N1 is the refractive index of the first lens (101), V1 is the dispersion coefficient of the first lens (101), V4 is the dispersion coefficient of the fourth lens (104), and V5 is the dispersion coefficient of the fifth lens (105).
Inventors:
MAO QING (CN)
Application Number:
PCT/CN2021/086253
Publication Date:
October 13, 2022
Filing Date:
April 09, 2021
Export Citation:
Assignee:
SZ DJI TECHNOLOGY CO LTD (CN)
International Classes:
G02B9/60; G02B13/18; G02B25/00; G02B27/01
Domestic Patent References:
| WO2021016810A1 | 2021-02-04 |
Foreign References:
| CN110426838A | 2019-11-08 | |||
| CN108333763A | 2018-07-27 | |||
| CN111458846A | 2020-07-28 | |||
| CN108064352A | 2018-05-22 | |||
| TWI537590B | 2016-06-11 | |||
| JP2013250506A | 2013-12-12 |
Attorney, Agent or Firm:
SHENZHEN LIDAO INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
Download PDF: