Title:
INTERNAL REFLECTION-TYPE TELECENTRIC LENS
Document Type and Number:
WIPO Patent Application WO/2022/042714
Kind Code:
A1
Abstract:
An internal reflection-type telecentric lens, comprising a first lens assembly, a reflection device (3) and a second lens assembly sequentially arranged along an optical path; the first lens assembly is used for receiving telecentric light beams, and converging the telecentric light beams, so that the telecentric light beams are reflexed by the reflection device (3) and then converged at the position of a diaphragm (5) of the second lens assembly; and the second lens assembly is used for receiving the telecentric light beams reflected by the reflection device (3) and projecting same for imaging. The length of the optical path of the entire telecentric lens can be shortened, and the height of the telecentric lens can be decreased, so that the telecentric lens can be applied to electronic equipment having requirement on thickness, such as a mobile phone.
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Inventors:
ZHANG TIANSHU (CN)
HUANG RUIBIN (CN)
ZHU LI (CN)
LYU FANGLU (CN)
WANG BO (CN)
HUANG RUIBIN (CN)
ZHU LI (CN)
LYU FANGLU (CN)
WANG BO (CN)
Application Number:
PCT/CN2021/115224
Publication Date:
March 03, 2022
Filing Date:
August 30, 2021
Export Citation:
Assignee:
SHENZHEN GUANGJIAN TECH CO LTD (CN)
International Classes:
G02B13/22; G02B1/04; G02B13/18; G02B15/14
Foreign References:
| CN213987009U | 2021-08-17 | |||
| CN213957737U | 2021-08-13 | |||
| CN102169222A | 2011-08-31 | |||
| CN110488469A | 2019-11-22 | |||
| CN206020790U | 2017-03-15 | |||
| US20170322390A1 | 2017-11-09 |
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