Galvanometer Mirror Layout for High-Resolution DMD Projection
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Solution Overview
Problem
The high development cost of pixel conversion technology for projection apparatuses due to the need for specific galvanometer mirrors to match different digital micromirror device arrangement modes, limiting their application and increasing production costs.
Innovation Solution
A projection apparatus design that includes a digital micromirror device and a galvanometer mirror, where a translucent lens is vibrated by a drive circuit board to move light beams in specific directions, allowing the use of a single galvanometer mirror with multiple digital micromirror device arrangements, and adjusting the relative placement angle between the galvanometer and digital micromirror devices to enhance image resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a specific galvanometer mirror is designed for each digital micromirror device arrangement mode, then the image resolution is improved, but the development cost and device complexity increase
Solution Approach 1:
The patent makes the galvanometer mirror universal by enabling it to work with multiple digital micromirror device arrangement modes (orthogonal and diagonal). This is achieved by making the relative placement angle adjustable, allowing the same galvanometer mirror to be adapted to different DMD configurations without requiring separate specialized mirrors for each mode.
Solution Approach 2:
The patent introduces adjustability in the relative placement angle between the galvanometer mirror and the digital micromirror device. This dynamic configuration allows the system to adapt to different arrangement modes, transforming a static, mode-specific design into a flexible, multi-mode compatible system that reduces development costs.
2Measurement precision
If a specific galvanometer mirror is designed for each digital micromirror device arrangement mode, then the image resolution is improved, but the production time increases
Solution Approach 1:
The patent creates a universal galvanometer mirror that can serve multiple DMD arrangement modes through adjustable relative placement angles. This eliminates the need to develop separate mirrors for orthogonal and diagonal arrangements, significantly reducing development time while maintaining high image resolution performance.
Solution Approach 2:
The patent establishes a preliminary adjustable configuration system that allows the galvanometer mirror to be pre-adapted to different arrangement modes. By designing the system with built-in adjustability from the outset, it prevents the need for time-consuming redevelopment when switching between orthogonal and diagonal DMD configurations.
3Measurement precision
If the translucent lens is vibrated at high frequency, then the image resolution is increased, but the device complexity increases
Solution Approach 1:
The patent applies mechanical vibration to the translucent lens through the drive circuit board to achieve pixel shift resolution enhancement. By vibrating the lens at high frequency, the system moves the light beam to adjacent pixels, effectively increasing the perceived resolution without requiring additional optical elements or complex mechanical structures.
Solution Approach 2:
The patent replaces complex mechanical pixel-shifting mechanisms with a simpler vibrational approach. Instead of moving entire optical components or using complex mechanical systems to shift pixels, the invention uses high-frequency vibration of the translucent lens to achieve the same effect, reducing overall system 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
Reduces development costs and time by enabling the use of a single galvanometer mirror across various digital micromirror device arrangements, increasing image resolution through high-frequency light beam movement, and optimizing the projection apparatus's size and illumination efficiency.
Implementation Method 1
the translucent lens is vibrated by the drive circuit board so that a light beam projected by the projection apparatus is moved at high frequency in a specific moving direction
Implementation Method 2
The digital micromirror device is adapted to reflect the illumination beam through the color wheel towards the lens
Data Source
AI summary
A projection apparatus with high resolution includes a digital micromirror device and a galvanometer mirror. The digital micromirror device includes a plurality of digital micromirrors set in orthogonal arrangement. The galvanometer mirror includes a drive circuit board and a translucent lens. The translucent lens aligns with the digital micromirror device with a diagonal direction of the translucent lens perpendicular or parallel to an arrangement direction of the plurality of digital micromirrors. The drive circuit board can vibrate the translucent lens so that a light beam projected by the projection apparatus is moved in the diagonal direction.