Optical Element Adjustment Mechanism for Tilt and Axial Deviation Control
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Solution Overview
Problem
Existing optical adjustment mechanisms for optical elements face challenges in precisely adjusting the position and tilt of optical elements, particularly in maintaining alignment and preventing axial deviation, which can affect the performance of imaging systems.
Innovation Solution
An optical adjustment mechanism comprising an outer frame, an inner frame, a biasing member, and an axial deviation suppression portion with protruding portions and contact portions that allow for precise adjustment of the inner frame's position and tilt, using biasing members and pressing mechanisms to maintain alignment and suppress axial deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional adjustment mechanisms (cylindrical cam, tilt adjustment washer, guide bars) are used to adjust the tilt of optical elements, then the tilt adjustment function is achieved, but axial deviation occurs affecting imaging system performance
Solution Approach 1:
The adjustment mechanism is segmented into independent functional components: protruding portions for axial deviation suppression, contact portions for tilt adjustment, and pressing members for applying controlled force. This segmentation allows each component to perform its specific function optimally without interfering with others, resolving the contradiction between tilt adjustment and axial deviation.
Solution Approach 2:
The invention introduces a new dimensional approach by using protruding portions extending in the optical axis direction to suppress axial deviation, while contact portions adjust tilt in a direction intersecting the optical axis. This multi-dimensional constraint system independently controls axial position and tilt angle, eliminating the trade-off between these parameters.
2Stability of the object's composition
If the inner frame is pressed against the outer frame to maintain alignment, then alignment stability is improved, but the adjustment range and ease of adjustment are reduced
Solution Approach 1:
The pressing members are designed to be movable along the optical axis, allowing dynamic adjustment of the pressing force. During adjustment, the pressing members can be repositioned to provide sufficient clearance for tilt adjustment; after adjustment, they are moved to apply optimal pressing force for stability. This dynamic capability resolves the contradiction between stability and adjustability.
Solution Approach 2:
The pressing degree (force and position) of the pressing members is changed during the adjustment process. By varying these parameters, the system transitions from a high-adjustability state (low pressing force) to a high-stability state (optimal pressing force), allowing both easy adjustment and stable alignment to be achieved at different stages.
3Reliability
If multiple contact points are used to suppress axial deviation, then axial deviation suppression is improved, but the device complexity increases
Solution Approach 1:
The protruding portions serve multiple functions: they constrain axial deviation, provide reference surfaces for positioning, and work in conjunction with contact portions for tilt adjustment. This multi-functionality reduces the need for separate components, suppressing axial deviation without significantly increasing overall device 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 mechanism enables precise adjustment of optical elements' position and tilt, reducing axial deviation and enhancing the performance and stability of imaging systems by ensuring accurate alignment and preventing unwanted movement.
Implementation Method 1
a biasing member that is disposed around the outer frame and biases the inner frame in an optical axis direction of the optical element
Data Source
AI summary
One embodiment according to the technique of the present disclosure provides an optical adjustment mechanism that adjusts a position and/or a tilt of an optical element. An optical adjustment mechanism according to one aspect of the present invention includes: an outer frame; an inner frame that is held by the outer frame and holds an optical element; a biasing member that is disposed around the outer frame and biases the inner frame in an optical axis direction of the optical element; and an axial deviation suppression portion that suppresses deviation of the inner frame in a direction intersecting the optical axis direction with respect to the outer frame, in which the axial deviation suppression portion has protruding portions disposed at a plurality of locations of the outer frame around the optical axis and protruding in the optical axis direction and contact portions formed in the inner frame and coming into contact with the respective protruding portions.