Binocular Device With Obscured Adapted Lens Area
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Solution Overview
Problem
Monocular display devices cause visual fatigue and discomfort due to the rivalry between real and virtual visions, limiting the wearer's binocular field and increasing the risk of diplopia, as they do not effectively manage the difference in brightness, contrast, and field of view between the two eyes.
Innovation Solution
A binocular device with a first lens displaying a virtual picture and a second lens having an adapted area that overlaps with the field of view of the second eye, which is obscured to reduce the competition between real and virtual visions, using techniques such as light darkening, defocusing, or scattering, adjustable based on wearer and display parameters to maintain a binocular field while minimizing fatigue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a monocular display device displays a virtual picture to one eye while the other eye views the real world, then supplementary information is provided to the wearer, but visual fatigue and diplopia occur due to rivalry between ophthalmic and supplementary vision
Solution Approach 1:
The patent applies local quality by creating an adapted area on the second lens that corresponds to the field of view of the virtual picture displayed to the first eye. This adapted area has different optical properties (obscured, defocused, or with altered brightness/contrast) compared to the rest of the second lens, thereby locally modifying the real-world view to reduce binocular rivalry while preserving supplementary information display.
Solution Approach 2:
The patent changes optical parameters (brightness, contrast, focus, or obscuration) of the adapted area on the second lens to reduce the rivalry between the two eyes. By adjusting these parameters, the real-world image in the corresponding field of view is modified to be less competitive with the virtual picture, thereby reducing visual fatigue and diplopia while maintaining information delivery.
2Reliability
If the second eye is entirely closed to improve monocular vision, then visual fatigue is reduced, but the binocular field and perception of the real environment are drastically reduced
Solution Approach 1:
Instead of closing the entire second eye, the patent applies local quality by creating an adapted area only in the specific region of the second lens corresponding to the virtual picture's field of view. This localized modification reduces visual fatigue in the critical area while preserving the rest of the binocular field for natural environment perception.
Solution Approach 2:
The patent applies partial action by obscuring or modifying only the adapted area corresponding to the virtual picture's field of view, rather than the entire second lens. This partial modification is sufficient to reduce binocular rivalry and visual fatigue while maintaining adequate binocular field for spatial awareness and real environment perception.
3Reliability
If an adapted area is created on the second lens to reduce rivalry, then visual comfort is improved, but device complexity increases
Solution Approach 1:
The patent implements local quality by applying the adapted area only to the specific region of the second lens needed for reducing rivalry, rather than modifying the entire lens system. This localized approach minimizes the added complexity while achieving the visual comfort benefit in the critical field of view area.
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 reduces visual fatigue and diplopia, allowing the wearer to maintain a wide binocular field by attenuating the real-world view corresponding to the virtual picture's field of view, enhancing comfort and perception of the real environment.
Implementation Method 1
the adapted area is configured to be obscured
Implementation Method 2
using techniques such as light darkening, defocusing, or scattering
Implementation Method 3
the virtual picture being transmitted at least through the back face of the first lens defining a display area on the back face
Data Source
AI summary
A binocular device adapted to a wearer comprising: a first lens and a second lens, respectively designed to be placed in front of first and second eyes of the wearer, the first lens comprising at least a back face, a monocular display device designed and arranged to display a virtual picture towards the first eye of the wearer, the virtual picture being transmitted through the back face of the first lens defining a display area on the back face, wherein: the second lens comprises an adapted area and a corresponding area, the corresponding area is the area scanned by the second eye of the wearer when the first eye scans the virtual picture through the display area, and the adapted area is arranged so that the adapted area overlaps at least a part of the corresponding area, and the adapted area is configured to be obscured.