Adjusting Module for Projector Optical Assembly Positioning
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Solution Overview
Problem
In projector manufacturing, the relative position between incident light and the light entrance of an integration rod often deviates from the optimal position due to manufacturing tolerances, leading to reduced optical efficiency, as existing methods cannot adjust the position of lenses fixed by elastic pieces.
Innovation Solution
An adjusting module that includes a frame, an optical assembly, and an elastic assembly with adjusting members, allowing the optical assembly to be displaced relative to the frame in a plane perpendicular to the incident optical axis, enabling optimal positioning for improved optical efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If lenses are fixed by elastic pieces in setting grooves, then the structure is simple and easy to manufacture, but the position of lenses cannot be adjusted, leading to deviation from optimal optical position
Solution Approach 1:
The patent transforms the static fixed lens structure into a dynamic adjustable structure by introducing adjusting members (screws) that enable the optical assembly to be positioned at different locations along the optical axis and in the radial direction, allowing optimization of optical efficiency while maintaining structural simplicity through the elastic assembly's detachable design
Solution Approach 2:
The patent divides the fixing mechanism into separate functional components: the elastic assembly provides detachable mounting with hooks engaging grooves, while adjusting members (screws) provide fine position control. This segmentation allows independent optimization of each function - simple detachable mounting plus precise positional adjustment - resolving the contradiction between manufacturing simplicity and positioning precision
2Manufacturing precision
If the integration rod is displaced relative to incident light to adjust optical efficiency, then optical efficiency can be optimized, but the adjusting range is limited and the structure becomes more complex
Solution Approach 1:
The patent makes the optical assembly dynamically adjustable along the optical axis and radially through threaded adjusting members, enabling continuous position variation within a larger range than fixed integration rod methods. The elastic assembly's detachable hooks allow the optical assembly to be repositioned at different locations, expanding adaptability while maintaining structural simplicity
Solution Approach 2:
The patent extends the adjustment from one-dimensional (only axial displacement of integration rod) to two-dimensional adjustment by enabling radial positioning of the optical assembly through the elastic assembly's hook-groove mechanism combined with threaded adjustment, thereby increasing the adjustable range and adaptability without proportionally increasing structural complexity
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 adjusting module effectively displaces the optical assembly to achieve better optical efficiency and enhances projection quality by allowing precise adjustment of the light beam's entry point into the integration rod.
Implementation Method 1
the elastic assembly includes a fixing portion, a first elastic portion and a second elastic portion... the first elastic portion includes a first hook and a first elastic arm connected to each other... the second elastic portion includes a second hook and a second elastic arm connected to each other
Data Source
Figure 1~2A
Figure 2B
Figure 2C
AI summary
An adjusting module and a projector are provided. The adjusting module includes a frame, an optical assembly, an elastic assembly and an adjusting member. The optical assembly is fixed to the elastic assembly. The elastic assembly is detachably assembled on the frame, and includes a fixing portion, a first elastic portion and a second elastic portion. The fixing portion is fixed to the optical assembly. The first and second elastic portions respectively include first and second hooks and first and second elastic arms. The first and second elastic arms are respectively connected to the fixing portion, and the first and second hooks are respectively assembled to the frame. The adjusting member penetrates through the through hole and leans against the optical assembly. When the adjusting member is adjusted, the optical assembly is displaced relative to the frame in a plane perpendicular to an incident optical axis.