AR Optical Apparatus with Vision Correction Curved Surfaces
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Solution Overview
Problem
Conventional augmented reality devices face challenges in providing effective vision correction for users with refractive errors, such as nearsightedness or farsightedness, due to limitations in field of view, eyebox, image quality, and design flexibility.
Innovation Solution
The optical apparatus for augmented reality incorporates a reflective unit and an optical means with curved surfaces to efficiently provide vision correction, allowing for a combination of methods including curved design of optical and reflective units, and the use of auxiliary optical elements to enhance image correction and reduce device volume and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a holographic film is attached to a vision correction lens to serve as an optical combiner, then the vision correction function is provided, but the field of view and eyebox are severely limited
Solution Approach 1:
The patent applies curved surfaces to the optical combiner (either the vision correction lens surface or the holographic film mounting surface) to expand the effective area for light reflection. This curvature allows a wider field of view and larger eyebox while maintaining the vision correction function, resolving the contradiction between providing vision correction and limiting the viewing area.
2Adaptability or versatility
If a separate lens clip is mounted on a glasses-type augmented reality device for focus correction, then the vision correction function is provided, but the volume and weight of the device increase
Solution Approach 1:
The patent merges the vision correction lens and the augmented reality optical combiner into a single integrated structure. The holographic film is mounted directly on the vision correction lens, eliminating the need for separate lens clips or additional components. This integration reduces the overall device volume and weight while maintaining both vision correction and augmented reality functions.
3Adaptability or versatility
If a separate lens clip is always worn inside glasses to perform vision correction for both virtual and real images, then the vision correction function is provided, but the design flexibility is limited
Solution Approach 1:
The patent creates a universal optical combiner that simultaneously serves as both the vision correction element and the augmented reality display element. This single component handles both virtual image projection and real image correction, eliminating the need for separate components that must be worn in specific configurations. The design becomes more flexible as it no longer requires separate alignment of multiple components.
4Device complexity
If vision correction is performed using a single curved surface, then the structure is simplified, but the vision correction range is limited to −4D to +2D
Solution Approach 1:
The patent applies different curvatures to different regions or surfaces of the optical combiner. By using a first surface with a first curvature and a second surface with a second curvature, the system can correct a broader range of vision defects while maintaining structural simplicity. Each surface can be optimized for specific correction needs, expanding the overall correction range beyond what a single curved surface can achieve.
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
This solution enables efficient vision correction for users with refractive errors, achieving a small volume and light weight, while increasing design flexibility and maintaining high image quality and resolution.
Implementation Method 1
a reflective unit configured to transfer the augmented reality image light, output from the image output unit, to the pupil of a user's eye by reflecting the augmented reality image light toward the pupil
Implementation Method 2
an optical means configured such that the reflective unit is disposed therein, and configured to transmit therethrough at least part of real object image light, which is image light output from a real object, toward the pupil of the user's eye; wherein at least any one of the first and second surfaces of the optical means is formed as a curved surface
Data Source
AI summary
The present invention is directed to an optical apparatus for augmented reality with a vision correction function. The optical apparatus for augmented reality with a vision correction function includes: an image output unit configured to output augmented reality image light; a reflective unit configured to transfer the augmented reality image light to the pupil of a user's eye; and an optical means configured such that the reflective unit is disposed therein, and configured to transmit therethrough at least part of real object image light toward the pupil of the user's eye; wherein the optical means includes a first surface and a second surface; wherein the reflective unit is disposed inside between the first and second surfaces of the optical means; and wherein at least any one of the first and second surfaces of the optical means is formed as a curved surface.