Switchable Liquid Crystal Film for Sunlit Surface Transformation
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Solution Overview
Problem
Projection-based surface transformation techniques are ineffective in outdoor, brightly lit environments due to the brightness of sunlight and viewer interference, which diminishes or ruins the transformation effect.
Innovation Solution
A display system utilizing a switchable liquid crystal film that changes from an opaque to a transparent state, allowing a background image element to be visible through a foreground image element, enabling real-time surface transformation without altering lighting levels, using a controller to switch the film's state and embedded within structures like building walls for seamless integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If projection-based techniques are used to transform surfaces, then surface transformation can be achieved in controlled lighting environments, but the transformation effect is diminished or ruined in brightly lit outdoor environments due to sunlight brightness and viewer interference
Solution Approach 1:
Instead of using emissive projection to create images, the patent uses reflective technology where the surface reflects ambient light to display images. This inverts the approach from active light emission to passive light reflection, allowing the surface to be transformed even in bright sunlight without being overwhelmed by environmental illumination.
Solution Approach 2:
The patent employs switchable films that can change their optical properties, including transparency and reflectivity, to display different images on the surface. By changing the optical characteristics of the film rather than changing light emission, the surface transformation remains effective across varying illumination conditions.
2Adaptability or versatility
If emissive projection techniques are used, then images can be displayed on surfaces, but the technique fails in daylight conditions and requires controlled lighting environments
Solution Approach 1:
The patent transitions from emissive projection to reflective display technology. Instead of projecting light onto the surface, the system uses switchable films that reflect ambient light to create images, enabling operation in full daylight conditions without requiring controlled lighting environments.
Solution Approach 2:
The reflective display system uses ambient light from the environment as its light source, eliminating the need for separate illumination systems. The surface essentially serves itself by reflecting available light rather than requiring external light projection, providing adaptability across all lighting conditions.
3Manufacturing precision
If viewers are positioned close to the surface to observe transformations, then detailed surface changes can be seen, but viewers shadow or block the projected light and ruin the effect
Solution Approach 1:
By switching from emissive to reflective technology, the system eliminates the light source behind the surface that would be blocked by viewers. Since the reflective film uses front-lit ambient light rather than backlit projection, viewers can observe the surface up close without casting shadows that would interfere with the 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
Enables effective visual transformation of surfaces in direct sunlight or high illumination settings, providing a reflective, non-emissive effect that maintains the illusion of surface changes without the need for altering lighting, ensuring the transformation is perceivable by viewers without shadowing or blocking issues.
Implementation Method 1
the optical element includes a pane (or sheet or film) that is substantially opaque in the first operating state and substantially transparent in the second operating state... the pane is a liquid crystal (LC) film, and the controller operates a power source, which may be part of the display system, to provide electric current to the LC film to switch the optical element to the second operating state
Data Source
AI summary
A display system for transforming sunlit and other brightly lit surfaces while being observed by viewers or an audience. The display system includes an optical element switchable between first and second operating states, and the optical element includes a pane that is opaque in the first operating state and transparent in the second operating state. The display system includes a controller operable to switch the optical element between the first and second operating states. Further, the display system includes a background image element positioned adjacent to a first surface of the pane of the switchable optical element. The pane may be a liquid crystal (LC) film, and the controller operates a power source to provide electric current to the LC film to switch the optical element to the second operating state. The display system may include a foreground image element positioned proximate to a second surface of the pane.