Holographic Projection System Using Segmented Laser Subsystems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing three-dimensional holographic projection systems are limited by the need for larger components, increased weight, and reduced brightness when scaling up, and they often restrict viewing angles due to optical characteristics, making it difficult to project high-quality, large-scale 3D images without glasses.
Innovation Solution
A projection apparatus using a laser projection system with a diffuser, beam diverter, and adjustable concave mirror, along with multiple subsystems arranged in a circular or polygonal pattern, to project holographic images that appear as floating, 3D images viewable from multiple angles without glasses, utilizing a Fresnel lens and anti-reflective glass for improved brightness and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If larger components are used to scale up the projected image, then the image size is improved, but the system weight and cost increase
Solution Approach 1:
The projection system is divided into multiple independent projection subsystems, each projecting a portion of the overall image. This allows the system to achieve large-scale projection without requiring a single large component, thereby reducing weight while maintaining image size.
Solution Approach 2:
Multiple projection subsystems are arranged in a nested or distributed configuration where each subsystem contributes to the overall projected image. The subsystems can be compactly arranged within the housing, enabling large image projection without proportionally increasing system weight.
2Area of stationary object
If larger components are used to scale up the projected image, then the image size is improved, but the light brightness deteriorates
Solution Approach 1:
The projection system uses multiple independent laser projection subsystems, each contributing light to the overall image. This distributed light source approach maintains brightness across large image areas without requiring a single high-power source that would compromise overall luminance.
Solution Approach 2:
Multiple projection subsystems are optically combined to form a single coherent image. The light from multiple sources is merged through the beam diverter and concave mirror system, maintaining high brightness across the entire projected image area.
3Device complexity
If conventional optical systems are used, then the system structure is simple, but the viewing angle is limited
Solution Approach 1:
Multiple projection subsystems are arranged around the housing in a distributed configuration, with each subsystem projecting from a different angular position. This segmentation of the projection architecture enables multi-angle viewing without requiring a single complex optical system.
Solution Approach 2:
The system transitions from a single-point projection to a multi-point spatial distribution of projection subsystems. By arranging subsystems in different spatial positions around the housing, the system achieves 360-degree viewing capability through spatial dimensionality rather than complex optical manipulation.
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 the projection of high-quality, large-scale 3D holographic images that can be viewed from various angles without glasses, reducing the size and weight of the projection system while maintaining brightness and depth perception.
Implementation Method 1
a diffuser to diffuse the laser beam that is output from the laser projection system
Implementation Method 2
a concave mirror placed to receive the laser beam reflected by the beam diverter and to reflect the laser beam back through the beam diverter to project three-dimensional holographic images to a focal point
Implementation Method 3
reflect the laser beam back through the beam diverter to project three-dimensional holographic images to a focal point at the floating display position
Implementation Method 4
lens or series of lenses, placed inside of, and spaced away from, a wall of the housing, through which the laser beam that is reflected from the concave mirror is directed and passes
Implementation Method 5
lens or one of the series of lenses includes at least one Fresnel lens
Implementation Method 6
an anti-reflective glass is mounted outside of the housing, and the three-dimensional holographic images are projected through the anti-reflective glass to reduce image brightness outside of the housing
Data Source
AI summary
A projection apparatus projects holographic images. The projection apparatus includes, within a housing, a laser projection system that outputs a laser beam, a diffuser to diffuse the laser beam projected by the laser projection system, a beam diverter/splitter that polarizes the received beam after it has been diffused by the diffuser, and a concave mirror onto which the beam is diverted and which reflects the images to the floating display position that is outside the housing. The apparatus may further include an adjustable lens to adjust the focus and/or size of images that are reflected from the concave mirror. Multiple projection apparatuses may be mounted around the floating display position to synchronously project the holographic images. A conical mirror may be used with the projection apparatus or with multiple projection apparatuses to display the images at a position above the conical mirror.