Pixel Shift Unit Angle Adjustment for Projector Resolution Compatibility
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Solution Overview
Problem
Existing projector systems require different pixel pitches for light modulation elements with varying resolutions, necessitating custom optical systems and plane plate glass configurations, which increases costs and complexity.
Innovation Solution
A projector design that employs a common pixel shift unit with a plane plate optical element, adjustable by changing the attachment angle, allowing for optical path shifting to accommodate different pixel pitches, enabling the use of a single pixel shift unit across various light modulation elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a common optical system is used for light modulation elements with different resolutions, then cost is reduced, but the pixel pitch varies requiring different plane plate glass slopes
Solution Approach 1:
The pixel shift unit is designed with a rotatable structure that allows dynamic adjustment of the plane plate glass angle. This enables the same optical system to adapt to different pixel pitches by changing the inclination angle of the plane plate glass, thereby resolving the contradiction between cost reduction through commonality and adaptability to different resolutions
Solution Approach 2:
The invention changes the angular parameter of the plane plate glass in the pixel shift unit to accommodate different pixel pitches. By adjusting this geometric parameter, the system maintains compatibility across various light modulation element resolutions while using a common optical system, thus reducing cost without sacrificing adaptability
2Adaptability or versatility
If plane plate glass with different slopes is used for different pixel pitches, then compatibility is improved, but device complexity and cost increase
Solution Approach 1:
The pixel shift unit is designed as a universal component that can serve multiple light modulation elements with different resolutions. Through rotational adjustment of the plane plate glass, a single pixel shift unit can be configured for different pixel pitches, eliminating the need for multiple specialized components and reducing overall device complexity
Solution Approach 2:
The rotatable mechanism allows the same plane plate glass to perform multiple functions by changing its angle, effectively replacing what would otherwise require multiple static components with different slopes. This dynamic adjustment capability simplifies the optical system while maintaining broad compatibility
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 use of a common pixel shift unit across projectors with different light modulation element resolutions, reducing costs and simplifying the optical system while maintaining high image resolution by adjusting the attachment angle of the pixel shift unit.
Implementation Method 1
an optical element that shifts an optical path of light from a pixel in the light modulation element
Data Source
AI summary
An image projection apparatus includes a light modulation element, a pixel shift unit that includes an optical element configured to shift an optical path of light from a pixel in the light modulation element and to shift a position on a projection surface of projected pixel formed on the projection surface by a projection optical system with the light, and an attachment portion to which the pixel shift unit is attached. The optical element shifts the optical path by a shift amount in accordance with an attachment angle of the pixel shift unit relative to a plane orthogonal to an optical axis from the light modulation element to the projection optical system. The attachment portion is configured to select a plurality of angles for the attachment angle.