Monocular Display Electrochromic Filter Binocular Rivalry
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Solution Overview
Problem
Monocular image display devices cause binocular rivalry due to differences in luminance between the image viewed by one eye and the surroundings, leading to decreased visibility of the image displayed when used outdoors, as existing solutions either reduce external light transmittance or increase manufacturing costs.
Innovation Solution
Incorporating a primary light amount adjuster, which is an electrochromic filter disposed closer to one eye than the optical axis of the other eye, to control the amount of external light and reduce luminance differences, thereby enhancing visibility while maintaining a clear field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screen is used to screen out external light, then binocular rivalry is suppressed and visibility of the displayed image is improved, but transmittance of external light is decreased and visibility of the surroundings is degraded
Solution Approach 1:
The image display device is divided into two separate optical paths: one for viewing the displayed image and another for viewing the surroundings. This segmentation allows each eye to receive optimized light conditions without compromise, resolving the contradiction between image visibility and surroundings visibility.
Solution Approach 2:
Different optical characteristics are applied to different regions: the image viewing path uses optical elements optimized for image display, while the surroundings viewing path maintains high transmittance for natural vision. This local differentiation allows each function to operate at optimal performance.
2Reliability
If a screen is used to suppress binocular rivalry, then visibility of the displayed image is improved, but manufacturing cost increases
Solution Approach 1:
The transparent image display component serves multiple functions simultaneously: it displays information to the user while also allowing passage of external light for surroundings viewing. This multi-functionality eliminates the need for separate screen components, reducing manufacturing complexity and cost.
Solution Approach 2:
The transparent display acts as an intermediary element that mediates between the need for image display and the need for light transmission. Rather than using a screen that blocks light, the transparent display allows both functions to coexist through its optical properties.
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 solution effectively reduces binocular rivalry by adjusting light transmittance to improve visibility of the displayed image and surroundings, without degrading the field of view or increasing manufacturing costs.
Implementation Method 1
a primary light amount adjuster, which is an electrochromic filter
Data Source
AI summary
A monocular image display device includes a virtual image former to display an image in front of one eye of a user and a primary light amount adjuster being in front of another eye of the user. The primary light amount adjuster is disposed closer to the one eye of the user than an optical axis of the another eye of the user is.