Light Field Display Simulating Open Views
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Solution Overview
Problem
As human populations increase, interior spaces become more densely populated, leading to a lack of perceived openness and natural light, which can negatively impact mental health and productivity, and existing technologies struggle to efficiently simulate open views and provide energy-efficient lighting solutions.
Innovation Solution
A light field display system comprising multiple projection units with imaging, optical, and diffusion systems that create an angular image with multiple depth planes, simulating a partially diffusing window by redirecting and diffusing light to provide a perception of depth and openness while minimizing the visibility of the projection units and optimizing light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple projection units are used to create angular images with depth planes, then the perception of openness and depth is improved, but the complexity of the device increases
Solution Approach 1:
The display system is divided into multiple projection units, each responsible for specific angular views. Each projection unit independently creates a portion of the angular image, allowing the system to simulate depth and openness through composite viewing angles while maintaining modular complexity
Solution Approach 2:
The system transitions from displaying flat 2D images to creating 4D light fields by adding angular and depth dimensions. Multiple projection units emit light from different positions and angles, reconstructing scenes with perceived depth planes and spatial relationships
2Object-affected harmful factors
If the number of windows is reduced to maintain interior space enclosure, then space security is improved, but the amount of natural light decreases
Solution Approach 1:
The system creates optical copies of outdoor scenes by projecting light fields that replicate the appearance of windows and exterior views. Multiple projection units generate synthetic light distributions that mimic natural daylight entering through windows, providing visual access to outdoor scenes without physical openings
Solution Approach 2:
The projection units act as intermediaries between the interior space and outdoor scenes. Instead of direct visual access through windows, the system mediates the connection by capturing outdoor light fields and reprojecting them into the interior, maintaining security while preserving natural light perception
3Illumination intensity
If the overall luminance of lighting system is increased to compensate for loss of natural light, then illumination intensity is improved, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts light field parameters including intensity, angular distribution, and temporal characteristics to match natural daylight conditions. By controlling the optical properties of projected light rather than simply increasing overall luminance, the system achieves natural-looking illumination with optimized energy consumption
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
The system effectively simulates open views, improving mental health and productivity while reducing energy consumption by providing a configurable and efficient lighting solution that mimics natural light distribution, enhancing the perceived spaciousness of interior spaces.
Implementation Method 1
an optical system comprising one or more lenses shaped and located to receive light from pixels of the precursor image and to emit redirected light transmitted therethrough
Implementation Method 2
a diffusion system located to receive the redirected light and operative to laterally spread light that is transmitted therethrough and to thereby emit diffuse light
Data Source
AI summary
An angular image of a scene may be displayed using a light field display. The light field display may comprise a plurality of projection units. Each of the projections units may comprise an imaging system and an optical system. The imaging system may illuminate pixels of a planar image of the scene. Light corresponding to each of the pixels may be directed towards the optical system. The optical system may comprise first and second lenses for redirecting each light beam corresponding to a pixel in different directions. In some embodiments the first and second lenses form a globe lens. A diffusion system may conceal the optical systems. Additionally, or alternatively, the diffusion system may produce a uniform distribution of light at a plurality of different viewing angles.