Lenticular Photo-Substrate for Direct Optical Image Registration
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Solution Overview
Problem
Existing lenticular printing methods are laborious, imprecise, and limited to thick lenticular lenses, leading to issues like ghosting, double images, and blurred effects, especially when using non-linear lens arrays, and require complex registration processes.
Innovation Solution
The method involves using a photo-substrate with a hemi-spherical or spherical lenticular lens array and energy-reactive materials, where images are directly imaged through the lens array by narrowly collimated light or laser beams at specific angles, automatically interlacing and registering the images without the need for software algorithms, allowing for thinner lenses and improved alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional lenticular printing methods are used with software interlacing, then images can be produced with linear lenticular lenses, but registration precision deteriorates to 11-22 microns causing ghosting and double images
Solution Approach 1:
The patent replaces the mechanical/software-based interlacing and registration system with a direct optical imaging system. Instead of using software algorithms to interlace images and then attempting to register them mechanically during printing or lamination, the invention uses optical projection through the lenticular lens array itself to directly form the interlaced image pattern on the substrate, eliminating registration errors entirely.
Solution Approach 2:
The patent introduces an optical projection system as an intermediary between the image source and the substrate. This intermediary uses the lenticular lens array to optically interlace and register multiple images simultaneously during exposure, acting as a mediator that automatically performs the complex registration task that previously required separate mechanical alignment steps.
2Adaptability or versatility
If complex interlacing software and registration processes are used, then linear lenticular lens arrays can be processed, but device complexity increases significantly
Solution Approach 1:
The patent replaces complex software-based interlacing algorithms and multi-step registration processes with a straightforward optical projection method. The system simply projects images through the lenticular lens array at the appropriate angles during exposure, allowing automatic optical interlacing without requiring complex software processing or manual registration procedures.
Solution Approach 2:
The lenticular lens array itself performs the interlacing function optically during the exposure process. Instead of requiring external software to pre-process images into interlaced formats, the lens array automatically interlaces the projected images through its optical properties, making the system self-sufficient and eliminating the need for complex pre-processing software.
3Ease of manufacture
If thick lenticular lenses are used, then manufacturing is easier, but product thickness increases limiting applications in fashion and packaging
Solution Approach 1:
The patent changes the optical parameters of the lenticular lens array, specifically using lenses with focal lengths optimized for the direct projection method. This allows the system to achieve proper image formation and interlacing with much thinner lens substrates than traditional methods require, enabling applications where thinness is critical while maintaining ease of manufacture through standard optical fabrication processes.
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 approach simplifies the production process, enables thinner lenticular lenses, and improves registration accuracy, making it feasible for applications in fashion, packaging, and security features, while eliminating the need for complex interlacing and registration processes.
Implementation Method 1
images are directly imaged through the lens array by narrowly collimated light or laser beams at specific angles
Implementation Method 2
a lenticular photo-substrate comprising a lenticular lens array
Implementation Method 3
a substrate comprising one or more photo-reactive materials adhered to the backside of the lenticular lens array
Data Source
Figure 1a~1b
Figure 2a1~2c
Figure 3a~3c
AI summary
The present invention provides a photo-substrate for printing of lenticular images that comprises a lenticular lens array, and an energy-reactive material adhered to the backside of the lenticular lens array. According to the methods of the present invention, the lenticular image is printed directly through the lenticular lens array onto the energy-reactive material, using, for example, collimated light or laser. The photo-substrate of the present invention can be adapted for large scale or industrial production to print lenticular images on a wide array of substrates, including such things as packaging and clothing.