Headup Display Parallel Optical Member for Stable Light Emission
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Solution Overview
Problem
Conventional headup display devices require precise alignment of parallel mirrors, which is difficult to maintain, leading to unstable emission of display light.
Innovation Solution
A headup display device with a collimating optics system that includes a parallel optical member with a semi-transparent surface and a reflection surface, where the parallel light enters at a predetermined angle, ensuring stable emission of display light by maintaining precise parallelism between the surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pair of parallel mirrors is used to emit stable display light, then the display light emission stability is improved, but the alignment precision requirement increases and assembly difficulty increases
Solution Approach 1:
The patent combines the first mirror and second mirror into a single integrated parallel mirror assembly where the mirrors are fixed in parallel arrangement. This merging reduces the alignment precision requirements between separate mirrors while maintaining the stable display light emission function through the combined structure's inherent parallelism.
Solution Approach 2:
The parallel mirror assembly serves multiple functions: it reflects light from the display device, emits stable parallel display light, and maintains geometric precision through its integrated structure. This multi-functionality reduces the need for separate precision alignment components while achieving reliable light emission.
2Reliability
If parallel mirrors are aligned with high precision, then the display light emission stability is improved, but the assembly difficulty increases
Solution Approach 1:
By merging the first and second mirrors into an integrated assembly with fixed parallel arrangement, the patent simplifies the assembly process. The combined structure maintains precision through its design rather than requiring precise alignment of separate components during assembly.
Solution Approach 2:
The parallel mirror assembly is pre-configured with the correct parallel arrangement and geometric precision before installation. This preliminary preparation of the mirror geometry eliminates the need for complex real-time alignment during assembly, reducing assembly difficulty while maintaining emission stability.
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 configuration allows for stable and precise emission of parallel display light at a predetermined angle, enhancing the reliability of the headup display device.
Implementation Method 1
a collimating optics that collimates the light emitted from the display means into parallel light
Implementation Method 2
reflecting a part of the parallel light
Implementation Method 3
transmitting a part thereof as transmitted light
Implementation Method 4
the second surface reflecting the parallel light to the first surface
Data Source
AI summary
Provided is a headup display apparatus that is capable of accurately outputting stable display light, a collimator lens, collimates image light, as parallel light, said image light having been outputted from a display means. A parallel light guide has a first surface, which has the parallel light from the collimator lens inputted thereto, and which reflects a part of the parallel light and transmits a part of the parallel light as transmitted light beams, and a second surface that reflects the parallel light to the first surface, said first surface and second surface being provided in parallel to each other. The parallel light guide outputs the transmitted light beams from the first surface, and the parallel light is inputted to the first surface at a predetermined angle.