HUD Collimation Apparatus Reducing LED Beam Mixing
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Solution Overview
Problem
Existing heads-up display systems using light-emitting diodes face challenges in efficiently presenting images due to wide opening angles of electromagnetic beams, leading to mixed beams and reduced image quality.
Innovation Solution
The use of a collimation apparatus, such as a lens array or pinhole plate with sub-lenses, to reduce the opening angle of light-emitting diode beams, combined with a combination optical unit to superpose electromagnetic rays from multiple arrays, preventing overlap and enhancing image presentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light-emitting diodes are used to present an image for heads-up display, then the image can be displayed, but the wide opening angle of electromagnetic beams causes mixed beams and reduced image quality
Solution Approach 1:
A collimation apparatus is introduced as an intermediary component between the light-emitting diodes and the combination optical unit. This collimation apparatus includes collimation lenses that receive the wide-angle electromagnetic beams from the LEDs and convert them into narrow, parallel beams, thereby preventing beam mixing and improving image quality.
Solution Approach 2:
The opening angle parameter of the electromagnetic beams is changed from wide to narrow through the collimation apparatus. By adjusting the beam parameters (opening angle) before the beams enter the combination optical unit, the system achieves better image quality and reduced beam mixing.
2Productivity
If multiple arrays of light-emitting diodes are used to form an image, then the image can be presented, but overlap of partial images beyond the specified image area occurs
Solution Approach 1:
The collimation apparatus acts as an intermediary that ensures precise spatial separation of beams from different LED arrays. By collimating the beams before they enter the combination optical unit, the system achieves accurate image positioning and prevents overlap beyond the specified image area.
Solution Approach 2:
The collimation of beams is performed in advance (preliminary action) before the beams are combined by the optical unit. This preliminary collimation ensures that when the beams are later combined to form the final image, they maintain precise boundaries and do not overlap beyond the specified image area.
3Reliability
If collimation apparatus is added to reduce opening angles, then beam mixing is reduced and image quality improves, but device complexity increases
Solution Approach 1:
The collimation apparatus is segmented into multiple collimation lenses, with each lens corresponding to specific light-emitting diodes. This segmentation allows the system to achieve collimation functionality while maintaining a modular structure that manages complexity through functional decomposition.
Solution Approach 2:
The collimation lenses serve multiple functions: they collimate the beams from LEDs, position the beams spatially, and prepare them for combination by the optical unit. By making the collimation apparatus multi-functional, the system reduces the need for additional separate components, thereby managing 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 improves image presentation by reducing beam mixing, increasing light intensity, and preventing overlap, resulting in higher image quality and precision on heads-up displays.
Implementation Method 1
a collimation apparatus provided on the emission side at a specified spacing in front of the array of the light-emitting diodes, wherein the collimation apparatus reduces the first opening angles of the beams of the light-emitting diodes downstream of the collimation apparatus
Implementation Method 2
a combination optical unit arranged downstream of the collimation apparatus in the emission direction, the combination optical unit superposes the electromagnetic rays from the three arrays to form an image for the head-up display
Data Source
AI summary
An apparatus for presenting an image for a heads-up display includes three arrays of light-emitting diodes, wherein the light-emitting diodes of an array are arranged and output electromagnetic beams in an emission direction of an emission side of the array, the light-emitting diodes output an electromagnetic beam with a first opening angle in the emission direction, a collimation apparatus provided on the emission side at a specified spacing in front of the array of the light-emitting diodes, wherein the collimation apparatus reduces the first opening angles of the beams of the light-emitting diodes downstream of the collimation apparatus in the emission direction to a second opening angle, the second opening angle is smaller than the first opening angle, and a combination optical unit arranged downstream of the collimation apparatus in the emission direction, the combination optical unit superposes the electromagnetic rays from the three arrays to form an image for the head-up display.