Optical Element Fixing Base with Nonparallel Grooves
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Solution Overview
Problem
Existing fixing bases for optical elements in projection devices often result in displacement or tilt due to manufacturing tolerances, increasing assembly complexity and cost, as they do not accurately fit the optical elements and require additional components.
Innovation Solution
A fixing base with a fixing groove and an elastic member fixing groove, equipped with elastic members that provide a push force to securely position optical elements, ensuring accurate alignment and preventing tilt or displacement by being nonparallel to the optical axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fixing bases are used to fix optical elements, then the assembly process requires additional components such as screws, but this increases assembly complexity and component cost
Solution Approach 1:
The fixing groove and elastic member fixing groove are integrated into a single fixing base structure, combining multiple fixing functions into one component. This eliminates the need for separate screws and additional fixing components, thereby reducing assembly complexity while maintaining reliable fixation of the optical element
Solution Approach 2:
The elastic members automatically provide pushing force to the optical element through the integrated grooves, creating a self-fixing mechanism. The structure utilizes the elastic deformation of the members themselves to achieve fixation without requiring external fastening components, simplifying the overall assembly
2Reliability
If traditional fixing bases are used to fix optical elements, then the assembly process requires additional components such as screws, but this increases assembly time
Solution Approach 1:
By integrating the fixing groove and elastic member fixing groove into one component, the patent enables simultaneous fixation of the optical element without sequential screw tightening steps, significantly reducing assembly time while maintaining reliable fixation
Solution Approach 2:
The elastic members are pre-installed in the fixing base with their supporting parts abutting against the inner surface of the elastic member fixing groove. This preliminary arrangement allows the optical element to be directly positioned and fixed without requiring additional fastening operations, thereby reducing assembly time
3Manufacturing precision
If the fixing groove is designed to fit the optical element, then manufacturing tolerance causes displacement or tilt under vibration, but increasing precision increases manufacturing cost
Solution Approach 1:
The patent changes the geometric parameters of the fixing groove and elastic member fixing groove such that their opening directions are nonparallel to the optical axis direction. This parameter change allows the elastic members to provide a pushing force that counteracts vibration-induced displacement and tilt, maintaining stability without requiring extremely tight manufacturing tolerances
Solution Approach 2:
The elastic members provide a dynamic pushing force that adapts to vibration conditions. The supporting parts abutting against the inner surface of the elastic member fixing groove allow the members to deform elastically under vibration, maintaining continuous contact and preventing displacement or tilt of the optical element
4Reliability
If additional components such as screws are used to fix the optical element, then the component cost increases
Solution Approach 1:
The fixing groove and elastic member fixing groove are merged into a single integrated structure, eliminating the need for separate screws and fastening components. This reduces the total quantity of components required while maintaining reliable fixation of the optical element, thereby reducing component cost
Solution Approach 2:
The elastic members serve as both the fixing mechanism and the pushing force provider, eliminating the need for additional fastening components. The structure uses the elastic deformation of the members themselves to achieve fixation, reducing component quantity and cost while maintaining fixing reliability
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 solution allows for precise and quick assembly of optical elements, reducing assembly complexity and cost while ensuring stability and preventing issues like tilt or displacement.
Implementation Method 1
Each of the at least two elastic members includes an urging part and a supporting part. The supporting part abuts against an inner surface of the elastic member fixing groove to provide the urging part with a push force toward the optical element
Data Source
AI summary
A fixing base for fixing an optical element and disposing at least two elastic members is provided. The fixing base includes a fixing groove and an elastic member fixing groove. The elastic members abut against the elastic member fixing groove to provide the elastic members with a push force toward the optical element, so that the optical element abuts against the fixing groove. An opening direction of the fixing groove and an opening direction of the elastic member fixing groove are nonparallel to the optical axis of the optical element, and the elastic members and the optical element are respectively disposed in the elastic member fixing groove and the fixing groove along a direction nonparallel to the optical axis. The invention also provides a projection device including the fixing base. The fixing base provided by the invention can accurately and easily fix the optical element.