Title:
IMAGE-SPACE TELECENTRIC OPTICAL LENS AND SPECTRAL CAMERA COMPRISING THE SAME
Document Type and Number:
WIPO Patent Application WO/2023/240836
Kind Code:
A1
Abstract:
An image-space telecentric optical lens (100) that may be efficiently used in spectral cameras of mobile user devices. The optical lens (100) comprises a first lens group (102) and a second lens group (104) which are arranged in sequence along an optical axis (106) of the optical lens (100). The first lens group (102) comprises at least one aspherical lens element. The second lens group (104) comprises a first aspherical lens element (104-1), a second aspherical lens element (104-2) and a third aspherical lens element (104-3). The first and second aspherical lens elements (104-1,104-2) of the second lens group (104) are configured to correct a chromatic aberration of the optical lens (100). The third aspherical lens element (104-3) of the second lens group (104) is configured to refract chief rays substantially parallel to the optical axis of the optical lens (100). The first lens group (102) has a total optical power higher than that of the second lens group (104). Also given are preferable parameter values for each of the aspherical lens elements of the optical lens (100).
Inventors:
AYRAS PEKKA (FI)
JUHOLA MIKKO (FI)
LU JIANLONG (CN)
JUHOLA MIKKO (FI)
LU JIANLONG (CN)
Application Number:
PCT/CN2022/121593
Publication Date:
December 21, 2023
Filing Date:
September 27, 2022
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B13/00
Foreign References:
| CN207216120U | 2018-04-10 | |||
| CN110058387A | 2019-07-26 | |||
| CN112649940A | 2021-04-13 | |||
| CN208833995U | 2019-05-07 | |||
| JP2013007872A | 2013-01-10 | |||
| US20200319437A1 | 2020-10-08 |
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