Dynamic Projection Range Adjustment for Vehicle HUDs
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Solution Overview
Problem
Existing vehicle head-up displays (HUDs) have fixed projection range shapes, which cannot be adjusted to suit different driving situations or driver preferences, leading to increased manufacturing costs due to the need for multiple configurations to accommodate various vehicle types and countries with different windshield shapes and usage requirements.
Innovation Solution
A projection type display device with multiple projection units and a drive mechanism controlled by a controller to change the shape of the projection range, allowing for smooth switching between lateral and longitudinal screen modes, enabling optimal projection range configuration based on usage and driver preference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple HUD configurations are manufactured to accommodate different vehicle types and countries, then adaptability to various usage requirements is improved, but manufacturing cost increases
Solution Approach 1:
The patent implements a dynamically adjustable projection range shape by enabling switching between horizontal arrangement and vertical arrangement of projection units. This dynamic reconfiguration allows a single HUD device to adapt to different vehicle types and country-specific requirements without manufacturing multiple fixed configurations, thereby resolving the contradiction between adaptability and manufacturing cost.
Solution Approach 2:
The patent creates a universal HUD system that can serve multiple functions and applications through the controllable arrangement of projection units. By designing the system to accommodate both horizontal and vertical projection ranges, a single device can universally apply to different vehicle types (automobiles, aircraft, trains) and different country regulations, eliminating the need for multiple specialized configurations.
2Adaptability or versatility
If fixed projection range shapes are used in HUDs, then device complexity is reduced, but adaptability to different driving situations and preferences deteriorates
Solution Approach 1:
The patent introduces dynamic controllability to adjust the projection range shape between horizontal and vertical arrangements based on driving situations and driver preferences. This dynamic feature enhances adaptability while maintaining relatively simple device architecture through controlled reconfiguration rather than multiple complex fixed designs.
Data Source
AI summary
Provided are a projection type display device, a projection control method, and a non-transitory recording medium readable by a computer for recording a projection control program capable of smoothly changing shapes of projection ranges of image light. A projection type display device 1 includes: projection units 11 and 12 that project image light to a projection surface 4; a drive mechanism 13 for controlling a position, on the projection surface, of a projection range of the image light projected by the projection unit 12; and a controller 60 that controls the drive mechanism 13 and changes a length, in one direction, of a range obtained by combining projection ranges of the image light projected by the respective projection units 11 and 12 and a length, in a direction orthogonal to the one direction, of the range, respectively.