Projector Light Valve Dynamic Angle Adjustment Mechanism
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Solution Overview
Problem
Projectors are limited by design constraints that require a fixed angle between the projection plane and the optical axis of the projection lens, leading to unbalanced image resolution when the focal plane and projection plane are not aligned.
Innovation Solution
A dynamic angle adjustment device for the light valve of a projector, which includes a carrier supported by actuators and elastic members, allowing the light valve to tilt or rotate in real-time to match the orientation of the target projection plane, thereby adjusting the focal plane and achieving balanced image resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the projection plane is fixed at a specific angle relative to the optical axis, then the image resolution is balanced, but the projector cannot adapt to different projection environments and orientations
Solution Approach 1:
The light valve is made dynamically adjustable through a drive mechanism that enables real-time angle adjustment. The carrier supporting the light valve can rotate and tilt under the control of actuators, transforming the static projection system into a dynamic one that adapts to different projection planes and orientations.
Solution Approach 2:
The projector is designed with multi-functional capability to project images onto planes with different orientations and angles. By enabling the light valve to adjust its orientation in multiple dimensions, the device can universally adapt to various projection environments including ceiling projection, wall projection at different angles, and oblique projection.
2Manufacturing precision
If the light valve orientation is adjusted to match tilted projection planes, then image resolution remains balanced, but the drive structure becomes more complex
Solution Approach 1:
The drive mechanism is segmented into independent rotational and tilting components, each controlled by separate actuators. The carrier can rotate about a first axis and tilt about a second axis independently, allowing precise orientation adjustment without requiring a fully complex integrated mechanism.
Solution Approach 2:
The carrier acts as an intermediary component between the light valve and the actuators. It provides a simplified interface that translates actuator movements into precise orientation adjustments of the light valve, reducing the overall complexity of the drive structure while maintaining control precision.
3Measurement precision
If multiple actuators are used to control light valve orientation in two dimensions, then the adjustment precision is improved, but the device complexity and cost increase
Solution Approach 1:
The drive mechanism uses an asymmetric arrangement where one actuator controls rotation about the first axis and another actuator controls tilting about the second axis. This asymmetric control scheme achieves two-dimensional orientation adjustment with only two actuators, optimizing the balance between precision and 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
Enables the light valve to adjust its orientation in two dimensions, ensuring balanced image resolution across the projection image, even when the target projection plane is tilted up to 45 degrees relative to the optical axis, simplifying the drive structure by using only two actuators on adjacent sides of the carrier.
Implementation Method 1
a first elastic member and a second elastic member, wherein the carrier is connected to an outer frame via the first elastic member and the second elastic member
Implementation Method 2
a first part and a second part of the first actuator cooperate with each other to generate a force at a distance
Data Source
AI summary
A dynamic angle adjustment device for a light valve includes a carrier capable of supporting the light valve, a pair of first axes, a pair of second axes, a first actuator and a second actuator. A first part of the first actuator is disposed on the carrier, a second part of the first actuator is disposed on the second outer frame, and the first part and the second part of the first actuator cooperate with each other to generate a force at a distance. A first part of the second actuator is disposed on the first outer frame, a second part of the second actuator is disposed on the second outer frame, and the first part and the second part of the second actuator cooperate with each other to generate a force at a distance.