Optical Device Window Section for Coil Magnet Alignment
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Solution Overview
Problem
Existing optical devices with electromagnetic drive mechanisms for shifting the axis of picture light suffer from unclear alignment between the coil and permanent magnet, affecting vibration characteristics.
Innovation Solution
An optical device design featuring a window section in the support section to visually check and control the gap between the coil and permanent magnet, with an air core coil and nonmagnetic holding section to enhance vibration characteristics and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnetic drive mechanism is used to shift the axis of picture light, then the light path control function is achieved, but the alignment between coil and permanent magnet becomes unclear, deteriorating vibration characteristics
Solution Approach 1:
A transparent member is introduced as an intermediary component between the coil and permanent magnet. This transparent member allows visual observation of the gap and alignment between the coil and permanent magnet through its translucent or transparent property, enabling easy detection and adjustment of the electromagnetic drive mechanism's alignment without interfering with the magnetic field generation.
Solution Approach 2:
The transparent member utilizes optical property changes (translucency/transparency) to enable visual detection of the gap between coil and permanent magnet. By making the support section transparent or translucent in the gap region, the alignment state becomes visually observable, allowing for precise adjustment of the electromagnetic drive mechanism.
2Manufacturing precision
If the gap between coil and permanent magnet is not precisely controlled, then manufacturing is simpler, but the magnetic field generation efficiency deteriorates, affecting vibration characteristics
Solution Approach 1:
The transparent member serves as a visual intermediary that allows the gap between coil and permanent magnet to be observed during assembly. This enables precise control of the gap dimension without requiring complex alignment tools or procedures, simplifying the manufacturing process while achieving high precision.
Solution Approach 2:
The transparent member enables self-inspection and self-adjustment of the gap alignment during assembly. The visual feedback provided through the transparent member allows operators to directly observe and adjust the alignment without external measurement devices, making the manufacturing process both precise and simple.
3Strength
If the support section is made opaque for structural strength, then mechanical strength is improved, but visual inspection of coil and permanent magnet alignment becomes difficult
Solution Approach 1:
The support section is designed with different optical properties in different regions. The regions requiring structural strength remain opaque, while the specific region where the gap needs to be observed is made transparent or translucent. This local differentiation of material properties allows both structural integrity and visual inspection to be achieved simultaneously.
Solution Approach 2:
The support section is segmented into different functional zones: opaque regions for structural support and transparent/translucent regions for visual inspection. This segmentation allows the support section to fulfill multiple functions - providing mechanical strength where needed and enabling optical observation where required - without compromising either function.
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
Facilitates easy alignment and control of the coil and permanent magnet, resulting in improved vibration characteristics and efficient magnetic field action, leading to enhanced optical device performance.
Implementation Method 1
a coil disposed so as to be opposed to the permanent magnet, and generating a magnetic field acting on the permanent magnet
Implementation Method 2
generating a magnetic field acting on the permanent magnet
Implementation Method 3
an optical section having a plane of incidence of light to which light can be input
Data Source
AI summary
An optical device includes a glass plate, a movable section adapted to support the glass plate, shaft sections adapted to support the movable section so as to be able to oscillate around an oscillation axis, a support section adapted to support the shaft sections, a permanent magnet provided to the movable section, and a coil disposed so as to be opposed to the permanent magnet, and generating a magnetic field acting on the permanent magnet, and the support section has a window section through which a gap between the permanent magnet and the coil can visually be recognized.