Optical Assembly Fixing Device for Camera Alignment

Solution Overview

Problem

The assembly of front-facing camera modules in mobile devices is prone to misalignment with the display screen and can interfere with nearby antenna data transmission, affecting assembly accuracy and signal integrity.

Innovation Solution

A fixing device with a cover plate and bracket is used to securely position the optical assembly within a predetermined space, limiting movement in specific directions and ensuring accurate alignment while shielding the antenna from interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the front-facing camera module is snap-fittingly connected to the circuit board and guided through an alignment ring, then the assembly process is simple, but the positional accuracy of the optical assembly deteriorates when deviation is too large

Engineering Contradiction:

Improveassembly process simplicityVSAvoidpositional accuracy of optical assembly

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by pre-positioning the optical assembly on the circuit board before final assembly. The optical assembly is temporarily fixed at a predetermined position on the circuit board, ensuring accurate alignment before the display screen is installed. This preliminary positioning prevents misalignment issues that would otherwise require complex alignment rings and manual adjustment during final assembly.

Inventive Principle:

Principle #10Preliminary action

2Volume of moving object

If the front-facing camera module is installed in the rear shell, then the device structure is compact, but it interferes with the data transmission of nearby antennas

Engineering Contradiction:

Improvedevice compactnessVSAvoidinterference with antenna data transmission

Core Design Contradiction:

Volume of moving objectVSObject-generated harmful factors

Solution Approach 1:

The patent applies segmentation by dividing the device into functionally isolated zones. The optical assembly is positioned in a specific region of the circuit board that is spatially separated from the antenna areas. This segmentation ensures that the optical components and antenna elements do not interfere with each other, allowing both the compact device structure and reliable data transmission to coexist.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If the optical assembly is loosely positioned, then the assembly process is flexible, but the positional stability and alignment accuracy deteriorate

Engineering Contradiction:

Improveassembly flexibilityVSAvoidpositional stability of optical assembly

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary action by pre-positioning the optical assembly on the circuit board before final assembly. The optical assembly is temporarily fixed at a predetermined position on the circuit board, ensuring accurate alignment before the display screen is installed. This preliminary positioning prevents misalignment issues that would otherwise require complex alignment rings and manual adjustment during final assembly.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11768424B2Fixing device for accurate positioning of optical assembly, optical module, and electronic device

Publication Date: 2023.09.26 CHIUN MAI COMM SYST INC

AI summary

A fixing device for accurately fixing an optical assembly to a rear housing of an electronic device fixes the optical assembly in a predetermined position and includes a cover plate. The cover plate defines a hole and a limiting portion. The hole corresponds to a photosensitive portion of the optical assembly and the photosensitive portion is configured to protrude out of the cover plate. The limiting portion is configured to limit a movement of the optical assembly away from the rear housing before being fixed in position. The fixing device fixes the optical assembly in the predetermined position so that the assembly accuracy and efficiency are improved. An optical module including the fixing device, and an electronic device including the optical module are also provided.