Title:
IMAGING LENS
Document Type and Number:
WIPO Patent Application WO/2023/221637
Kind Code:
A1
Abstract:
An imaging lens, comprising a lens barrel (4) and light-transmitting sheets. The light-transmitting sheets comprise at least a first light-transmitting sheet (1) and a second light-transmitting sheet (2); the first light-transmitting sheet (1) is mounted in the lens barrel (4); the first light-transmitting lens (1) is located on a first end portion of the lens barrel (4) facing a light incidence direction; an intervening space (11) is comprised between the first light-transmitting sheet (1) and an adjacent light-transmitting sheet thereof; the second light-transmitting sheet (2) is mounted in the lens barrel (4); the imaging lens further comprises a sealing structure (5); the sealing structure (5) is provided between the second light-transmitting sheet (2) and the inner wall of the lens barrel (4). Because the sealing structure (5) is provided between the second light-transmitting sheet (2) and the inner wall of the lens barrel (4), high-temperature gas will not enter the intervening space (11) via a gap between the lens barrel (4) and the second light-transmitting sheet (2), such that on the one hand, the flowing of gas inside a photographing apparatus is reduced, and on the other hand, the rise of the temperature of gas in the intervening space (11) caused by gas convection is reduced, thereby avoiding or reducing the problem of fogging of the inner surface of the first light-transmitting sheet (1).
Inventors:
XU SHENWEI (CN)
ZHANG KOUWEN (CN)
XU YI (CN)
DING ZHI (CN)
ZHANG KOUWEN (CN)
XU YI (CN)
DING ZHI (CN)
Application Number:
PCT/CN2023/082455
Publication Date:
November 23, 2023
Filing Date:
March 20, 2023
Export Citation:
Assignee:
ZHEJIANG SUNNY SMARTLEAD TECH CO LTD (CN)
International Classes:
G02B7/02
Foreign References:
| CN115047580A | 2022-09-13 | |||
| CN212905653U | 2021-04-06 | |||
| CN209356730U | 2019-09-06 | |||
| US20180372983A1 | 2018-12-27 | |||
| US20200409016A1 | 2020-12-31 |
Attorney, Agent or Firm:
BEIJING JUNTAI-MIZUKI INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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