Rotatable Reflector Head-Up Display for Adjustable Field of View
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Solution Overview
Problem
Conventional head-up display (HUD) devices have a fixed field of view, limiting the ability to display multiple information sources without increasing the size of components, which in turn increases manufacturing costs.
Innovation Solution
A head-up display system with a rotatable reflector controlled by a reflector control unit, allowing adjustment of the optical path to project multiple images on a surface within a predetermined region, enabling an expanded and adjustable field of view without enlarging the light source, relay lens unit, or reflector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the sizes of the CRT display, relay lens unit, reflector and combiner are increased to display more information simultaneously, then the field of view is expanded, but the manufacturing cost of the HUD device increases
Solution Approach 1:
The reflector is made rotatable about a rotational center, allowing dynamic adjustment of the optical path. The reflector control unit rotates the reflector by predetermined rotational angles to project different images on different regions of the combiner surface, enabling multiple information sources to be displayed sequentially rather than requiring a larger static display area
Solution Approach 2:
The patent introduces temporal dimension to the display system by rotating the reflector to switch between different optical paths. This allows the system to display multiple images at different time intervals on the same combiner surface, effectively expanding the field of view without increasing the physical size of components
2Adaptability or versatility
If the field of view is expanded by increasing component sizes, then more information can be displayed simultaneously, but the device complexity increases
Solution Approach 1:
The rotatable reflector serves multiple functions: it can be rotated to different predetermined angles to select different optical paths, and it can remain stationary to maintain a fixed optical path. This single component provides both flexibility for displaying multiple information sources and stability for maintaining a fixed field of view, reducing the need for additional complex mechanisms
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 allows for an expanded field of view, enabling the display of multiple images or information sources without increasing component sizes, thereby reducing manufacturing costs and enhancing user experience.
Implementation Method 1
The reflector is disposed rotatably in a first optical path of the light signal provided by the light source for reflecting the light signal provided by the light source to a second optical path
Data Source
AI summary
A head-up display device includes a light source, a reflector, a reflector control unit, and a surface. The light source provides a light signal that corresponds to display data. The reflector is disposed rotatably in a first optical path of the light signal. The reflector control unit receives a control signal corresponding to the display data and controls rotation of the reflector about a rotational center. The surface is disposed in a second optical path. When the reflector is rotated for a predetermined rotational angle by the reflector control unit according to the control signal, the light signal reflected by the reflector is projected on the surface to display an image corresponding to the display data on a predetermined region of the surface.