Optical Element Adjusting Mechanism Using Voice Coil Motor
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Solution Overview
Problem
Existing optical element adjusting mechanisms in projectors face challenges in quickly, easily, and accurately adjusting the mounting angle of optical elements and reliably fixing these adjustments, which affects the brightness and quality of the projection.
Innovation Solution
An optical element adjusting mechanism comprising a frame, a carrier with a hollow body, and a driving element, where the optical element is fixed on the carrier, and the carrier's angle is adjusted using a driving coil module and magnet to synchronize with the frame's positioning, with adhesives used to secure the adjusted position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional mechanical adjusting mechanisms are used for optical elements, then the structure is simple, but the adjustment speed and accuracy are insufficient
Solution Approach 1:
The patent replaces traditional mechanical adjusting mechanisms with a voice coil motor (electromagnetic actuator) to drive the optical element carrier. This substitution provides finer control precision for angle adjustment while maintaining reasonable structural complexity through the use of positioning portions that guide the adjustment process.
Solution Approach 2:
The positioning portions on the frame and carrier work together to automatically guide and constrain the adjustment process. The groove-shaped positioning portions enable the carrier to rotate along a predetermined trajectory, providing self-guided adjustment without requiring complex external control mechanisms.
2Reliability
If adjustable mounting mechanisms are implemented, then the angle can be modified, but the reliability of fixing the adjusted angle is insufficient
Solution Approach 1:
The positioning portions are pre-configured in specific groove shapes and arrangements before the adjustment process begins. This preliminary configuration ensures that when the voice coil motor drives the carrier, the positioning portions automatically constrain the movement along the correct trajectory, ensuring reliable angle fixation without requiring additional locking operations.
3Productivity
If the optical element angle is adjusted manually, then the process is simple, but the adjustment speed is slow
Solution Approach 1:
The patent employs a voice coil motor to replace manual adjustment operations. The electromagnetic actuator provides both rapid response for fast adjustment speed and fine control capability for high precision, simultaneously improving both productivity and measurement precision compared to manual methods.
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 allows for quick, accurate, and reliable adjustment of the optical element's angle, enhancing the brightness and projection quality by stabilizing the optical element's position, thereby improving the overall performance of the projection device.
Implementation Method 1
The driving element includes a driving coil module and a magnet. The driving coil module is detachably disposed on the frame, and the magnet is detachably disposed on the hollow body.
Data Source
AI summary
An optical element adjusting mechanism is provided, including a frame, a carrier, and an optical element. The frame includes a plurality of first positioning portions. The carrier includes a hollow body, a first axial portion connected to the hollow body, and a plurality of second positioning portions connected to the hollow body. The hollow body is connected to the frame through the first axial portion. The plurality of second positioning portions are disposed corresponding to the plurality of first positioning portions. The optical element is fixed on the hollow body. The plurality of second positioning portions are fixed to the plurality of first positioning portions through a plurality of adhesives. An optical element adjusting system and a projection device are also proposed. The optical element adjusting mechanism, the optical element adjusting system, and the projection device quickly, easily, and accurately adjust a rotation angle of the optical element.