Segmented Collimation Display for Wide Field of View
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Solution Overview
Problem
Existing collimation display apparatuses for large field of view and large exit pupil are bulky, heavy, difficult to manufacture, and costly, making them unsuitable for airborne and vehicle-mounted systems.
Innovation Solution
A collimation display apparatus comprising multiple image sources and relay lenses with a rectangular outermost optical lens, where the optical axes are parallel, and an image source driving circuit, allowing for a compact and lightweight design with a large exit pupil and wide field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional catadioptric type light path HUD display is used, then collimation display with large field of view and large exit pupil can be achieved, but the volume and weight become large
Solution Approach 1:
The patent divides the optical system into multiple discrete optical units, each comprising an image source and relay lens. These units are arranged in a matrix configuration, where each unit contributes to the overall field of view and exit pupil size without requiring a single large-volume optical path. This segmentation allows the system to achieve large field of view and exit pupil while maintaining compact individual unit volumes.
2Area of stationary object
If traditional catadioptric type light path HUD display is used, then collimation display with large field of view and large exit pupil can be achieved, but the weight becomes large
Solution Approach 1:
The patent divides the optical system into multiple discrete optical units, each comprising an image source and relay lens. These units are arranged in a matrix configuration, where each unit contributes to the overall field of view and exit pupil size without requiring a single large-volume optical path. This segmentation allows the system to achieve large field of view and exit pupil while maintaining compact individual unit volumes.
3Length of stationary object
If waveguide-type HUD with pupil expanders is used, then large exit pupil can be achieved, but the machining and assembly difficulty increases significantly
Solution Approach 1:
The patent divides the optical system into multiple discrete optical units, each comprising an image source and relay lens. These units are arranged in a matrix configuration, where each unit contributes to the overall field of view and exit pupil size without requiring a single large-volume optical path. This segmentation allows the system to achieve large field of view and exit pupil while maintaining compact individual unit volumes.
4Manufacturing precision
If waveguide-type HUD with high parallelism requirements is used, then double image avoidance can be achieved, but the system volume and weight increase
Solution Approach 1:
The patent divides the optical system into multiple discrete optical units, each comprising an image source and relay lens. These units are arranged in a matrix configuration, where each unit contributes to the overall field of view and exit pupil size without requiring a single large-volume optical path. This segmentation allows the system to achieve large field of view and exit pupil while maintaining compact individual unit volumes.
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 solution results in a compact, lightweight, and cost-effective collimation display apparatus that provides a wide field of view and reduced luminance requirements, enhancing the usability in airborne and vehicle-mounted applications while maintaining image clarity and redundancy.
Implementation Method 1
the relay lens is arranged on an emergent light path of the image source, and projects the image provided by the image source into a virtual image at infinity
Implementation Method 2
the relay lens comprises a plurality of optical lenses arranged along an axis
Data Source
Figure 1~3A
Figure 3B~4
Figure 5~6B
AI summary
A collimation display apparatus (100) and a vehicle-mounted or airborne head-up display apparatus. The vehicle-mounted or airborne head-up display apparatus comprises: the collimation display apparatus (100) and a transparent reflecting mirror (18). The collimation display apparatus (100) comprises: at least two groups of collimation display sub-modules, each group of collimation display sub-modules comprises an image source (1) and a relay lens (2), wherein the image source (1) provides an image; and the relay lens (2) is arranged on an emergent light path of the image source (1), and projects the image provided by the image source (1) into a virtual image at infinity, the relay lens (2) comprises a plurality of optical lenses arranged along an axis, the contour of the optical lens, which is on the outermost side and the farthest from the image source (1), is rectangular, and the relay lens (2) is densely arranged. The collimation display apparatus (100) has a compact structure, and is small in size, light in weight and wide in field of view.