Holographic Display Virtual Light Source Generation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional holographic display methods only display images to one eye of the viewer, resulting in a less desirable viewing experience.
Innovation Solution
A holographic display device and method that utilize a pair of virtual light sources with a predetermined frequency, alternately emitting light to create a 3D scene visible to both eyes by generating coding information for two view points and using a light modulator to display encoded hologram images corresponding to these points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single light source is used to display holographic images, then the computing amount is reduced, but the viewing experience deteriorates because only one eye can view the image
Solution Approach 1:
The patent divides the single light source into two virtual light sources, each corresponding to a different viewpoint. This segmentation allows separate holographic images to be displayed for each eye while maintaining the simplified architecture of a single physical light source system, thus resolving the contradiction between reduced computing complexity and improved viewing experience.
Solution Approach 2:
The patent introduces the dimension of multiple viewpoints by creating two virtual light sources at different positions. This dimensional expansion allows the system to provide stereoscopic viewing for both eyes while still using a single physical light source, effectively resolving the contradiction between device simplicity and viewing quality.
2Device complexity
If a single viewpoint is used for holographic display, then the system complexity is reduced, but the viewing experience deteriorates due to lack of stereoscopic effect
Solution Approach 1:
The patent creates virtual copies of light sources at different positions (two virtual light sources corresponding to left and right viewpoints). These virtual copies enable stereoscopic display without requiring duplicate physical light source systems, thus maintaining low system complexity while improving viewing experience quality through stereoscopic effect.
3Reliability
If holographic images are displayed alternately to two eyes, then stereoscopic viewing is achieved, but the light source must switch between two viewpoints increasing system complexity
Solution Approach 1:
The patent uses a single physical light source as an intermediary to generate two virtual light sources through optical path manipulation. This intermediary approach allows the system to achieve stereoscopic viewing with alternating light emission to two eyes without requiring complex dual light source switching mechanisms, thus resolving the contradiction between stereoscopic capability and system complexity.
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 solution allows viewers to see a reconstructed 3D scene with both eyes, enhancing the viewing experience by alternately displaying holographic images to each eye, providing a perception of continuous 3D scenes.
Implementation Method 1
at least one light expander, configured to expand the laser light from the at least one laser device into a plurality of beams of light
Implementation Method 2
at least one light condenser, configured to condense the plurality of beams of light from the at least one light expander to generate a pair of virtual light sources
Implementation Method 3
a collimator lens, configured for receiving the light emitted from each of the two virtual light sources to pass there-through and to be converged at a position corresponding to a view point
Data Source
AI summary
A holographic display device and holographic display method are provided. The holographic display device includes at least one light-source generator. The light-source generator includes: at least one laser device, configured to irradiate laser light; at least one light expander, configured to expand the laser light from the at least one laser device into a plurality of beams of light; and at least one light condenser, configured to condense the plurality of beams of light from the at least one light expander to generate a pair of virtual light sources capable of alternately emitting light at a predetermined frequency.