GPH Element Inverse Dispersibility Augmented Reality Optical Apparatus
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Solution Overview
Problem
Existing optical apparatuses designed for immersive virtual reality do not allow external light to pass through, making them unsuitable for augmented reality applications where external light and images need to be overlaid.
Innovation Solution
An optical apparatus that includes an image optical system with a lens power element and a reflecting element, utilizing a GPH element with inverse dispersibility to overlay image light on external light, ensuring the resultant light is guided to the user's eyes without distortion or enlargement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional optical system with lens power is used to guide image light, then the image can be focused and guided to the user's eyes, but chromatic aberration occurs due to wavelength dispersibility of the optical elements
Solution Approach 1:
A GPH element with inverse dispersibility is introduced as an intermediary component between the image optical system and the reflecting element. This GPH element has opposite wavelength dispersibility to the optical elements in the image optical system, thereby compensating for and canceling out the chromatic aberration caused by the lens power elements while still allowing the image to be properly focused and guided to the user's eyes
2Measurement precision
If immersive virtual reality optical apparatus is used, then image light can be guided to user's eyes, but external light from the real world cannot pass through
Solution Approach 1:
Instead of using a fully reflective optical system that blocks external light, the patent inverts the approach by using a reflecting element with specific orientation that reflects image light toward the user's eyes while allowing external light to pass through. This enables the optical apparatus to function as an augmented reality device rather than immersive virtual reality, providing adaptability for both image guidance and external light transmission
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 creation of visual augmented reality by overlaying image light on external light, maintaining the natural appearance of real-world objects and preventing chromatic aberration, thus providing an immersive and accurate visual experience.
Implementation Method 1
the image optical system has a GPH element having inverse dispersibility, the inverse dispersibility being opposite to wavelength dispersibility of the optical element
Implementation Method 2
a reflecting element to overlay, by reflecting at least part of the image light, the at least part of the image light and the at least part of the external light
Data Source
AI summary
Optical apparatuses used for so-called immersive virtual reality (VR), as it is, can not be used for augmented reality (AR) that overlays external light and images. An optical apparatus to overlay image light on external light and guide resultant light in a downstream side, including: an image optical system including an optical element having lens power with respect to at least the image light; and a reflecting element to overlay, by reflecting at least part of the image light, the at least part of the image light and the at least part of the external light, wherein the image optical system has a GPH element having inverse dispersibility that is inverse to the wavelength dispersibility of the optical element.