Projector Display Panel Adjusting Mechanism for Focus and Pixel Correction
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Solution Overview
Problem
There is a need for an adjusting mechanism that can effectively adjust the position of a liquid crystal panel in a projector's optical system, as existing methods lack a specific mechanism for focus adjustment.
Innovation Solution
The proposed adjusting mechanism includes a first plate, a second plate, and a third plate, each with position adjusting actuators, allowing for movement in various directions (Z, θx, θy, X, θz, and Y axes) to precisely adjust the display panel's position relative to the projection lens, utilizing linear movers and elastic members for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a specific adjusting mechanism is introduced to enable precise focus adjustment and position control of the display panel, then manufacturing precision and reliability are improved, but device complexity increases due to the addition of multiple actuators and plates
Solution Approach 1:
The adjusting mechanism is divided into multiple independent functional modules: a first position adjusting actuator for focus adjustment, a second position adjusting actuator for pixel deviation correction, and a third position adjusting actuator for additional positioning. Each actuator operates independently on different plates (first plate, second plate, third plate), allowing precise control of the display panel position without requiring a single complex mechanism. This segmentation enables high manufacturing precision while keeping each individual actuator relatively simple.
2Adaptability or versatility
If multiple position adjusting actuators are added to achieve independent focus adjustment and pixel deviation correction, then functionality and reliability are improved, but the mechanism's size and weight increase
Solution Approach 1:
The adjusting mechanism employs a nested structure where the first plate, second plate, and third plate are arranged in layers along the optical axis. The display panel is mounted on the first plate, which is positioned on the second plate, which in turn is positioned on the third plate. This nesting arrangement allows multiple adjustment functions to be integrated in a compact vertical space, minimizing the overall footprint and reducing the weight of the moving components compared to a horizontal expansion layout.
3Volume of stationary object
If external guides are minimized to reduce mechanism size, then device compactness is improved, but manufacturing precision and stability may deteriorate
Solution Approach 1:
The adjusting mechanism uses self-aligning features where the multiple plates and actuators inherently guide each other through their geometric relationships and mechanical constraints. The nested plate structure provides automatic alignment during assembly and operation, eliminating the need for separate external guide rails or complex guidance systems. This self-service approach maintains position stability and reliability while keeping the mechanism compact.
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 mechanism enables independent focus adjustment and pixel deviation correction, maintaining image quality over time by allowing for precise positioning of the display panels, reducing the need for external guides and minimizing the mechanism's size and weight.
Implementation Method 1
the first actuator includes a first linearly mover configured to linearly move in the direction along the Z axis, the second actuator includes a second linearly mover configured to linearly move in the direction along the Z axis, the third actuator includes a third linearly mover configured to linearly move in the direction along the Z axis
Data Source
AI summary
An adjusting mechanism for adjusting a position of a display panel includes a first plate including a placing portion on which the display panel is placed, a second plate on which the first plate is placed, the second plate disposed on the opposite side of a display panel side with respect to the first plate, a third plate on which the second plate is placed, the third plate disposed on an opposite side of a first plate side with respect to the second plate, a first position adjusting actuator configured to move the first plate in a direction along a Z axis, a θx direction, and a θy direction, a second position adjusting actuator configured to move the second plate in a direction along an X axis and a θz direction, and a third position adjusting actuator configured to move the third plate in a direction along the Y axis.