Adjustable Lens Module for Image Projector Optical Alignment
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Solution Overview
Problem
Conventional image projectors lack an adjustable lens module, leading to tolerance issues between optical components, which prevents precise image projection onto a screen, requiring manual compensation that is time-consuming and labor-intensive.
Innovation Solution
An adjustable lens module with a base plate and positioning means, including screws and elastic components, allows for quick adjustment of the lens position within a lens barrel and housing to align the central axis with the optical axis, ensuring precise image projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the lens is fixed within the lens barrel using conventional mounting methods, then the structure is simple and stable, but the lens position cannot be adjusted to compensate for tolerance variations in optical components
Solution Approach 1:
The lens module transitions from a fixed structure to an adjustable structure. The lens can be positioned at different locations within the lens barrel along the optical axis by adjusting the lens barrel's position relative to the lens housing, enabling dynamic compensation for tolerance variations in optical components.
Solution Approach 2:
The lens module is divided into separable components: the lens barrel that can move independently within the lens housing, and the positioning means that controls the lens barrel's position. This segmentation allows independent adjustment of the lens position without affecting other optical components.
2Manufacturing precision
If manual adjustment of the lens position is performed to compensate for tolerance variations, then optical path alignment precision is improved, but assembly time and labor costs increase
Solution Approach 1:
The positioning means enables the lens module to be self-adjusting during assembly. The adjustable mechanism allows operators to quickly reposition the lens barrel to achieve proper optical alignment without requiring complex manual adjustment procedures or specialized tools, reducing assembly time while maintaining precision.
Data Source
AI summary
An adjustable lens module applied to an image projector is provided. The lens is positioned in a lens barrel situated within a lens housing mounted on a frame. The adjustable lens module includes a base plate, and a first, a second and a third positioning means. The base plate connected to the lens barrel is attached to the lens housing and mounted on the frame. The first, second and third positioning means are respectively positioned at the first, second and third corners of the base plate. The first and second corners are arranged diagonally on the base plate. At least the first and second positioning means are adjustably secured at the first and second corners respectively. By adjusting the relative position between the base plate and the first, second and third position means, a central axis of the lens is substantially parallel to or overlapped with an optical axis.