Square Profile Microlens Beam Mapper for 3D Display Moiré Reduction
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Solution Overview
Problem
Multi-display systems experience moiré interference due to interactions between color filters in stacked display layers, which affects image quality and resolution when displaying three-dimensional features.
Innovation Solution
The use of a refractive beam mapper with microlenses having a square profile, which directs rays from one display through sub-pixels of another display in a pseudo-random manner to reduce or eliminate moiré interference, combined with techniques like color filter offset or diffuser elements, maintains image quality and contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional stacked display arrangement is used to display three-dimensional features, then depth information is provided, but moiré interference occurs due to interactions between color filters in stacked layers
Solution Approach 1:
A refractive beam mapper is introduced as an intermediary optical element between the stacked display layers. This beam mapper uses microlenses to redirect and scramble the light paths from the color filters, preventing the regular patterns from interacting and creating moiré interference while still allowing the depth information to be conveyed to the viewer's retina
Solution Approach 2:
The patent changes the optical parameters of the system by introducing a refractive beam mapper with specific microlens configurations. The beam mapper modifies the light paths and scattering patterns to eliminate the periodic interactions that cause moiré interference, while maintaining the three-dimensional display capability through controlled light redirection
2Manufacturing precision
If refractive beam mapper with square profile microlenses is used to reduce moiré interference, then image quality is improved, but device complexity increases
Solution Approach 1:
The patent specifies that the microlenses in the refractive beam mapper have a substantially square profile rather than the conventional circular profile. This parameter change in the microlens geometry optimizes the beam mapping to better reduce moiré interference patterns while maintaining manufacturing feasibility through standard optical fabrication processes
Solution Approach 2:
The refractive beam mapper uses an array of microlenses that replicate a standardized square-profile lens structure across the entire display area. This copying approach allows for efficient manufacturing using repetitive fabrication processes while achieving the complex function of moiré interference reduction across the whole display
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 effectively minimizes moiré interference in multi-display systems without significantly sacrificing resolution or contrast, enhancing the display of three-dimensional features by optimizing the beam mapping and diffuser techniques.
Implementation Method 1
a refractive beam mapper (RBM) may be utilized in order to reduce or eliminate moire interference
Data Source
AI summary
A multi-display system (e.g., a display including multiple display panels) includes at least first and second displays (e.g., display panels or display layers) arranged substantially parallel to each other in order to display three-dimensional (3D) features to a viewer(s). An optical element(s) such as at least a refractive beam mapper (RBM) is utilized in order to reduce moiré interference.