WO2025245720 - OPTICAL SYSTEM
National phase entry is expected:
Publication Number
WO/2025/245720
Publication Date
04.12.2025
International Application No.
PCT/CN2024/095962
International Filing Date
29.05.2024
Title **
[English]
OPTICAL SYSTEM
[French]
SYSTÈME OPTIQUE
[Chinese]
光学系统
Applicants **
AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
Inventors
SHI, Xiuting
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
CNIPA
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1619 | |
| EPO | Filing, Examination, Granting | 11606 | |
| Japan | Filing, Examination, Granting | 2142 | |
| South Korea | Filing, Examination, Granting | 1958 | |
| USA | Filing, Examination, Granting | 4740 |

Total:
22,065
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Abstract[English]
Disclosed in the present invention is an optical system, sequentially comprising, from the rear side to the front side, an aperture located on the rear side of the optical system, a first lens, a second lens, a circular polarizer, and an image plane. The circular polarizer is attached to the rear side surface of the image plane; a composite film is arranged provided on the rear side surface of the first lens; the composite film comprises a reflective polarizing film and a quarter-wave plate; and the reflective polarizing film is provided on the rear side of the quarter-wave plate. The maximum semi-diameter of the first lens and the second lens is Max SD, the focal length of the optical system is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the central radius of curvature of the front side surface of the second lens is R4, and the following relational expressions are satisfied: Max SD ≤ 25.60 mm; -0.61 ≤ R4/f2 ≤ -0.17; and 19.00 ≤ |f1/f| + |f2/f| ≤23.20.[French]
Est divulgué dans la présente invention un système optique, comprenant séquentiellement, du côté arrière au côté avant, une ouverture située sur le côté arrière du système optique, une première lentille, une seconde lentille, un polariseur circulaire et un plan d'image. Le polariseur circulaire est fixé à la surface latérale arrière du plan d'image ; un film composite est disposé sur la surface latérale arrière de la première lentille ; le film composite comprend un film polarisant réfléchissant et une lame quart d'onde ; et le film polarisant réfléchissant est disposé sur le côté arrière de la lame quart d'onde. Le demi-diamètre maximal de la première lentille et de la seconde lentille est Max SD, la distance focale du système optique est f, la distance focale de la première lentille est f1, la distance focale de la seconde lentille est f2, le rayon de courbure central de la surface latérale avant de la seconde lentille est R4, et les expressions relationnelles suivantes sont satisfaites : Max SD ≤ 25,60 mm ; -0,61 ≤ R4/f2 ≤ -0,17 ; et 19,00 ≤ |f1/f| + |f2/f| ≤23,20.[Chinese]
本发明公开了一种光学系统,自后侧至前侧依次包含:光圈,位于所述光学系统的后侧;第一透镜;第二透镜;圆起偏器;影像面;所述圆起偏器贴设于所述影像面的后侧面;所述第一透镜的后侧面设有复合膜;所述复合膜包括反射偏振膜和四分之一波片,所述反射偏振膜设于所述四分之一波片的后侧;所述第一透镜和所述第二透镜的最大半口径为Max SD,所述光学系统的焦距为f,所述第一透镜的焦距为f1,所述第二透镜的焦距为f2,所述第二透镜的前侧面的中心曲率半径为R4,且满足下列关系式:Max SD≤25.60mm;-0.61≤R4/f2≤-0.17;19.00≤|f1/f|+|f2/f|≤23.20。