US 11,693,213 B2Granted

Optical system

AssigneeTDK Taiwan Corp.

InventorsChih-Wei Weng, Chia-Pin Hsu, Shao-Kuang Huang, Kun-Shih Lin, Shou-Jen Liu, Sin-Jhong Song

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Abstract

An optical system includes a fixed module, a movable module and a driving assembly. The movable module moves relative to the fixed module, and the movable module includes a lens unit which includes a first lens, a second lens, a first side wall and a second side wall. The first side wall has a first surface, which directly contacts the second lens, and the second side wall directly contacts the first lens. A portion of the driving assembly is directly disposed on the lens unit, configured to drive the lens unit to move along an optical axis of the first lens. The first side wall further has a second surface opposite to the first surface, and the second surface directly contacts the portion of the driving assembly. The thickness of the first side wall is different from the thickness of the second side wall.

Claims20

Dependent claims

An optical system, comprising:

a fixed module;
a movable module, movable relative to the fixed module, the movable module comprising a lens unit, and the lens unit comprising:
a first lens;
a second lens;
a first side wall, comprising a first surface, wherein the first surface is in direct contact with the second lens;
and
a second side wall, being in direct contact with the first lens;
and
a driving assembly, a portion of the driving assembly being directly disposed on the lens unit, configured to drive the lens unit to move along an optical axis of the first lens;
wherein the first side wall further comprises a second surface opposite to the first surface, the second surface is in direct contact with the portion of the driving assembly, and a thickness of the first side wall is different from a thickness of the second side wall;
wherein the length of the second side wall along the optical axis is less than the length of first side wall along the optical axis so that the second lens is partially exposed from the second side wall.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/399,641Filed 11 Aug 2021 · division
Priority: CN 201810607026.013 Jun 2018
Published: US 2021/0382271 A19 Dec 2021
Granted: 4 Jul 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G02B 13/0015
Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras: characterised by the lens design
G02B 7/021
For lenses: for more than one lens
G02B 7/10
With mechanism for focusing or varying magnification: by relative axial movement of several lenses, e.g. of varifocal objective lens
G02B 7/102
By relative axial movement of several lenses, e.g. of varifocal objective lens: controlled by a microcomputer

Family

Application62/532,117Us provisional application · filed 13 Jul 2017
Application16/044,254Parent of this division · filed 24 Jul 2018
US 2021/0382271 A1Pre-grant publication · published 9 Dec 2021
US 11,119,294 B2Parent of this division
US 2019/0018222 A1Published application
US 11,693,213 B2This patent

From the US filing history. Foreign family members aren’t listed.