Lenticular Print Dot Matrix Rotation for Ghosting Reduction
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Solution Overview
Problem
Current lenticular print technology faces issues such as ghosting due to misalignment of vertical strip pitch with lenticular sheet pitch, limited angular resolution, and spatial banding effects, which restrict the number of frames that can be printed and result in irregular transitions when viewing angles change.
Innovation Solution
A method that rotates the dot matrix sample points of a multi-frame image relative to the printer's X-Y axis before printing, allowing for increased angular resolution and reducing interframe pixel pitch distance, thereby eliminating interpolation between pixels and enabling more frames to be placed within the lenticular element pitch, thus minimizing ghosting and banding effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If vertical strip pitch is precisely matched with lenticular sheet pitch, then ghosting is reduced, but the number of frames that can be printed is limited
Solution Approach 1:
The patent transitions from traditional vertical strip arrangement to a diagonal/dot matrix arrangement of sample points. By changing the spatial dimension and orientation of how frames are arranged on the lenticular sheet, the system can fit more frames within the same pitch constraints, thereby increasing the number of printable frames while maintaining alignment precision.
Solution Approach 2:
The patent changes the arrangement parameters from vertical strips to diagonal/dot matrix patterns with specific angular orientations. This parameter change allows for more efficient space utilization within the lenticular pitch, enabling a higher frame count while maintaining precise alignment to prevent ghosting.
2Measurement precision
If more frames are printed within lenticular element pitch, then angular resolution is improved, but printer pixel pitch limitations are exceeded
Solution Approach 1:
The patent employs a diagonal arrangement of dot matrix sample points rather than traditional horizontal/vertical alignment. This dimensional change allows the system to effectively increase angular resolution by utilizing diagonal spacing, which fits more sample points within the printer's native pixel pitch constraints.
Solution Approach 2:
The patent uses asymmetric angular orientations for the dot matrix arrangement that are specifically calculated to maximize frame density within printer pixel constraints. This asymmetric configuration allows optimal utilization of available resolution while maintaining precise pixel pitch matching.
3Manufacturing precision
If interpolation is used to match pitches, then alignment is achieved, but spatial banding effects occur
Solution Approach 1:
The patent performs preliminary arrangement of dot matrix sample points at precise diagonal angles before printing. By pre-calculating and pre-positioning the sample points to match both lenticular and printer pitches exactly, the system eliminates the need for interpolation during printing, thereby avoiding spatial banding effects while maintaining precise alignment.
Data Source
AI summary
A lenticular print and method of producing that substantially reduces progressive pixel misalignment to produce a lenticular print that has increased angular resolution. The lenticular print includes a dot matrix pixel arrangement that is rotated with respect to the X-Y axis of a printer. The printed output of the rotated dot matrix pixel arrangement requires substantially no re-sampling interpolation. The lenticular print includes a conventional lenticular sheet having a plurality of convex shaped lenticular elements wherein the axis of the lenticular elements are substantially aligned with the axis of the pixel direction.