Light Field Print Manufacturing With Press Calibration
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Solution Overview
Problem
Conventional techniques for producing 3D effects in printed documents, such as holography and lenticular printing, face challenges with high costs, complexity, and vulnerability to counterfeiting, while micro-lenticular printing is limited by small lens size and sampling constraints.
Innovation Solution
A method using a printing press to print front and back target patterns on a substrate, accounting for press characteristics like registration tolerance and alignment, to create high-quality light field prints that enhance security and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional holography or lenticular printing is used to produce 3D effects, then 3D visual effects are achieved, but manufacturing complexity and costs increase
Solution Approach 1:
The patent uses computational methods to generate target patterns that replicate the optical effects of complex holographic and lenticular systems. Instead of physically manufacturing complex optical components, the invention creates digital representations (target patterns) that when printed on substrate produce the same 3D visual effects through computational photography and rendering techniques
Solution Approach 2:
The invention replaces mechanical/optical systems (holographic foils, lenticular lenses, specialized printing machinery) with a digital computing and standard printing press system. The complex optical physics problems are solved through computational algorithms that generate patterns compatible with conventional printing presses, eliminating the need for specialized manufacturing equipment
2Reliability
If specialized machinery and materials are used for holographic or lenticular printing, then 3D effects are achieved, but vulnerability to counterfeiting increases
Solution Approach 1:
The patent creates digital twins of physical optical systems through computational modeling. The target patterns are generated by calculating the exact optical response of light interacting with the printed patterns, creating a digital copy of the physical optical effect that can be reproduced without physical specialized materials
Solution Approach 2:
The invention transforms the physical parameters of optical systems (lens curvature, holographic fringe spacing, material properties) into digital parameters (pattern geometry, frequency content, phase information). This parameter transformation allows the same 3D effects to be achieved through different physical implementations, making counterfeiting difficult as the digital patterns can be easily replicated and distributed
3Reliability
If micro-lenticular printing is used, then 3D effects are achieved, but lens size and sampling constraints limit performance
Solution Approach 1:
The patent replaces physical micro-lenses with computationally generated patterns that simulate lens behavior. Instead of physically constraining light with small optical elements, the invention uses digital pattern recognition and rendering to create the appearance of depth, effectively copying the optical function without the physical constraints
Solution Approach 2:
The invention transitions from physical dimension constraints (lens size, sampling resolution) to computational dimension control. By working in the digital domain during pattern generation and then translating to physical printing patterns, the system achieves 3D effects without being limited by the physical size of printing components or substrate thickness
4Productivity
If standard printing presses are used without calibration, then production speed is maintained, but manufacturing precision deteriorates
Solution Approach 1:
The patent performs calibration measurements and target pattern generation before actual production printing. By pre-characterizing the printing press response (dot gain, registration tolerance, alignment) and pre-computing compensated target patterns, the system ensures high precision without slowing down actual production runs
Solution Approach 2:
The invention incorporates calibration patterns and measurement of actual printing press characteristics to create feedback loops that adjust target pattern generation. By measuring actual press performance (registration tolerance, alignment, dot gain) and using this feedback to compute corrected patterns, the system maintains high precision while using standard high-speed printing equipment
Data Source
AI summary
Techniques for manufacturing a light field print using a printing press. The techniques include: identifying at least one characteristic of the printing press at least in part by printing at least one calibration pattern; obtaining content to be rendered using the light field print, the content comprising multiple scene views; generating, based at least in part on the content and the at least one characteristic of the printing press, a front target pattern and a back target pattern; and using the printing press to: print the front target pattern on a first side of a substrate; and print the back target pattern on a second side of the substrate.