Holographic Element Projection for Data Eyeglasses
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Solution Overview
Problem
Current data eyeglasses are not transparent, blocking the outside world and lack efficient methods for superimposing virtual image content onto the real environment, limiting their application in augmented reality and other fields.
Innovation Solution
A projection apparatus for data eyeglasses featuring a holographic element on the eyeglass lens that deflects and focuses a light beam onto the retina, allowing for the overlay of image information onto the real world without the need for a digital light processing chip, enabling sharp virtual image perception and reducing manufacturing costs by omitting eye tracking units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If current data eyeglasses are used, then virtual image information can be introduced into the user's field of view, but the eyeglasses are not transparent and block out the outside world
Solution Approach 1:
The eyeglass lens is segmented into a transparent base lens and a separate holographic element. The holographic element is disposed on the surface of the eyeglass lens, allowing the lens to remain transparent while the holographic element provides the virtual image superposition capability. This segmentation enables the eyeglasses to maintain transparency while achieving augmented reality functionality.
2Productivity
If a digital light processing chip is used, then image content can be projected, but the device complexity and manufacturing cost increase
Solution Approach 1:
The invention extracts and eliminates the need for a DLP chip and eye tracking unit by using a holographic element that can be manufactured inexpensively. The holographic element performs the image projection function directly without requiring complex digital light processing hardware or active eye tracking mechanisms, thereby reducing device complexity and manufacturing costs while maintaining image projection capability.
3Adaptability or versatility
If the holographic element is disposed on the eyeglass lens, then image content can be superimposed onto the surroundings, but the depth of focus is limited
Solution Approach 1:
The holographic element utilizes optical path dimensionality to achieve depth of focus. By designing the holographic element to work with light beams that can be focused at different distances, the system achieves a large depth of focus while maintaining the superposition capability. The holographic element's optical design allows image content to be projected at various depths without sacrificing clarity.
4Manufacturing precision
If the light beam is scanned across the retina, then high-resolution image projection is achieved, but the scanning mechanism increases device complexity
Solution Approach 1:
Instead of using a complex scanning mechanism to move light across the retina, the holographic element creates a static or dynamically updated holographic image that is simultaneously visible across the entire field of view. The holographic element copies the image information in a distributed manner across its surface, eliminating the need for mechanical scanning while maintaining high resolution through the optical holographic reconstruction process.
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 allows for the implementation of augmented reality systems with a large depth of focus and high-resolution image projection, maintaining image sharpness across different gaze directions and planes, enhancing usability in work-related and leisure activities.
Implementation Method 1
at least one holographic element, disposed or disposable on an eyeglass lens of the data eyeglasses, for projecting an image onto a retina of a user of the data eyeglasses by deflecting and/or focusing the light beam onto a eye lens of the user
Implementation Method 2
at least one holographic element, disposed or disposable on an eyeglass lens of the data eyeglasses, for projecting an image onto a retina of a user of the data eyeglasses by deflecting and/or focusing the light beam onto a eye lens of the user
Data Source
AI summary
A projection apparatus for data eyeglasses. The projection apparatus encompasses at least one light source for emitting a light beam; and at least one holographic element, disposed or disposable on an eyeglass lens of the data eyeglasses, for projecting an image onto a retina of a user of the data eyeglasses by deflecting and/or focusing the light beam onto a eye lens of the user.