Reflector Adjustment Mechanism for Optical Machine Modules
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Solution Overview
Problem
The cumulative tolerances in optical machine modules of projectors cause optical path deviations, affecting performance, as each optical element and mechanical component have assembly-related inaccuracies.
Innovation Solution
An optical machine module with a reflector adjustment mechanism, comprising a movably positioned adjustment base, a fulcrum adjustment member, and axial adjustment members, allows for external adjustment of the reflector's position and angle without disassembling the housing, using elastic members to secure the base and prevent dust entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If each optical element is fixed through corresponding mechanical components with tolerances, then the assembly is straightforward, but cumulative tolerances cause optical path deviation
Solution Approach 1:
The reflector is designed with dynamic adjustment capabilities through three adjustment members that enable positional and angular changes. The adjustment base can move relative to the housing along the optical axis, and the reflector can be tilted around two orthogonal axes, transforming a static assembly into a dynamically adjustable system that compensates for manufacturing tolerances
Solution Approach 2:
The adjustment mechanism is segmented into three independent adjustment members, each responsible for a specific degree of freedom. This segmentation allows independent adjustment of each parameter (position and two angular orientations) and simplifies the adjustment process by breaking down the complex alignment task into manageable, isolated adjustments
2Manufacturing precision
If the adjustment base is made movable to enable reflector adjustment, then optical path correction is possible, but dust entry risk increases
Solution Approach 1:
A flexible seal structure is employed at the interface between the movable adjustment base and the housing. This seal allows the adjustment base to move along the optical axis while maintaining dust-tight closure, preventing harmful dust particles from entering the optical system during adjustment operations
Solution Approach 2:
The seal acts as an intermediary element between the movable adjustment base and the housing, mediating the contradiction between mobility and sealing. It enables relative movement while maintaining the barrier function against dust contamination
3Object-affected harmful factors
If an airtight design is implemented to prevent dust entry, then dust contamination is reduced, but manufacturing cost increases
Solution Approach 1:
Instead of implementing a complex airtight design, a simple flexible seal is used to achieve dust protection. This seal is inexpensive to manufacture and install, providing effective dust prevention without the high costs associated with complex airtight mechanisms
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
This solution effectively corrects optical path deviations by adjusting the reflector's position and angle, maintaining optical performance while preventing dust entry and reducing costs by avoiding the need for an airtight design.
Implementation Method 1
each reflector adjustment mechanism further includes a first elastic member. The first elastic member is located outside the optical machine housing and abuts between the fulcrum adjustment member and the optical machine housing
Data Source
AI summary
An optical machine module includes an optical machine housing and at least one reflector adjustment mechanism. The reflector adjustment mechanism includes an adjustment base movably disposed in the optical machine housing, at least one reflector disposed on the adjustment base, a fulcrum adjustment member including a fulcrum adjustment part located outside the optical machine housing and a fulcrum connection part extending into the optical machine housing and adjustably connected to a center of the adjustment base, a first axial adjustment member including a first axial adjustment part and a first connection part, and a second axial adjustment member including a second axial adjustment part and a second connection part. The first and second axial adjustment parts are located outside the optical machine housing. The first and second connection parts extend into the optical machine housing and are adjustably connected to the adjustment base.