Virtual Image Display Apparatus Light Guidance Adjustment
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Solution Overview
Problem
Existing virtual image display apparatuses that guide imaging light from the ear side to the nose side often result in a large apparatus size and design challenges when attempting to change the display positions of images for the right and left eyes, particularly in head-mounted designs.
Innovation Solution
A virtual image display apparatus featuring a first display device for the right eye and a second display device for the left eye, with an adjustment mechanism that guides imaging light in a direction intersecting the alignment of the devices, allowing for overlapping and independent recognition areas, thereby adjusting the display positions without increasing the apparatus size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the light-guiding device is moved to the right and left to change the display positions of the first image and the second image, then the display position adjustment is achieved, but the apparatus size becomes large
Solution Approach 1:
The patent changes the direction of image light guidance from the right-left direction (first direction) to the up-down direction (second direction intersecting the first direction). This dimensional change allows the display devices to guide light in a direction perpendicular to their alignment, enabling display position adjustment without extending the apparatus in the right-left direction, thus maintaining a compact apparatus size while achieving the desired adjustment capability
2Ease of operation
If the light-guiding device is moved to the right and left to change the display positions, then the display position adjustment is achieved, but the design becomes problematic for head-mounted type
Solution Approach 1:
By guiding image light in the second direction (up-down direction) that intersects the first direction (right-left alignment direction), the patent simplifies the design for head-mounted applications. This allows the display devices to be positioned closer together in the right-left direction while still achieving display position adjustment through movement in the perpendicular up-down direction, reducing design complexity and making head-mounted implementation feasible
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
Enables the formation of a wide field of view while maintaining a compact design, allowing for independent and overlapping image recognition areas, enhancing the user's visual experience without enlarging the apparatus.
Implementation Method 1
a first display device configured to display a first image for a right eye, a second display device configured to display a second image for a left eye... configured to guide imaging light in a second direction intersecting a first direction
Data Source
AI summary
A virtual image display apparatus includes a first display device for a right eye, a second display device for a left eye, and an adjustment device configured to adjust display positions, and the first display device and the second display device are configured to guide imaging light in a second direction intersecting a first direction in which the first display device and the second display device are aligned, and display the first image and the second image and the adjustment device makes an adjustment to provide an overlapping area in which the first image and the second image are visually recognized in the overlapping area and an independent area in which the first image and the second image are visually recognized independently.