Optical Module Lens Barrel Assembly for Compact AR Glasses
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Solution Overview
Problem
Optical modules in electronic devices such as AR glasses have complex structures, making assembly difficult and resulting in large volume and weight, which in turn increases the size and weight of the devices.
Innovation Solution
The optical module design includes a lens barrel main housing with limiting portions to secure dimming lenses, a cover assembly with a light source, and a transparent component, utilizing adhesives for fixation and a simple structure for easy assembly, reducing the overall size and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a complex structure is used to secure components, then component stability is improved, but device volume and weight increase
Solution Approach 1:
The patent integrates the limiting portion directly into the lens barrel main housing structure, combining the housing and positioning features into a single integrated component. This eliminates the need for separate securing mechanisms while maintaining component stability and reducing overall device volume.
Solution Approach 2:
The dimming lens is nested within the lens barrel main housing, with the limiting portion providing internal positioning. This nested arrangement secures the lens firmly while minimizing the external dimensions of the optical module.
2Stability of the object's composition
If a complex structure is used to secure components, then component stability is improved, but device weight increases
Solution Approach 1:
The limiting portion is merged with the lens barrel main housing, eliminating the need for additional securing components. This integration reduces the total material required and thus decreases device weight while maintaining the stability of the dimming lens positioning.
3Adaptability or versatility
If multiple components are used, then functional requirements are met, but assembly difficulty increases
Solution Approach 1:
The limiting portion is formed as an integral part of the lens barrel main housing through molding or machining, reducing the number of separate components. This simplification directly reduces assembly steps and difficulty while still meeting all functional requirements for securing the dimming lens.
4Volume of moving object
If a compact design is used, then device volume is reduced, but assembly precision requirements increase
Solution Approach 1:
The limiting portion is designed with specific local geometric features that provide precise positioning for the dimming lens. These localized precision features are concentrated in critical areas, allowing the rest of the compact structure to maintain smaller dimensions without compromising overall assembly precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves a compact and stable optical module that simplifies assembly, reduces device volume and weight, and enhances beam propagation stability, facilitating convenient portability.
Implementation Method 1
the light source is configured to emit image beams to the at least one dimming lens
Implementation Method 2
the transparent component is capable of transmitting the image beams passing through the at least one dimming lens
Data Source
AI summary
An optical module includes a lens barrel main housing, at least one dimming lens installed in the lens barrel main housing, a first cover assembly and a second cover assembly. Opposite ends of the lens barrel main housing are provided with a first opening and a second opening. The inner circumferential wall of the lens barrel main housing is provided with at least one limiting portion. Each dimming lens abuts against a limiting portion in the preset direction. The first cover assembly is arranged on the first opening and includes a light source configured to emit image beams to the at least one dimming lens. The second cover assembly is arranged on the second opening and includes a transparent component being capable of transmitting the image beams passing through the at least one dimming lens to an outside of the lens barrel main housing.