AR Optical Device Multi-Reflective Pinhole Units
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Solution Overview
Problem
Conventional optical devices for augmented reality have limitations such as complex configurations, high manufacturing costs, and a narrow field of view, as well as requiring separate operations or hardware to adjust focal length.
Innovation Solution
The optical device uses a plurality of image output units and reflective units to provide a wide field of view, with each reflective unit corresponding to at least one image output unit, and the reflective units are designed to have a size of 4 mm or less to achieve a pinhole effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single image output unit is used, then the device complexity is reduced, but the field of view becomes narrow
Solution Approach 1:
The patent divides the single image output function into multiple image output units (first and second image output units), each responsible for different regions of the field of view. This segmentation allows the system to achieve a wider overall field of view while keeping each individual output unit relatively simple
Solution Approach 2:
The patent extends the system from a single-point image output to a multi-point distributed output system. By arranging multiple image output units at different positions and orientations, the system achieves expansion in spatial dimensions, thereby widening the field of view without proportionally increasing overall device complexity
2Manufacturing precision
If high-resolution devices are used for all image output units, then the image quality is improved, but the manufacturing cost increases
Solution Approach 1:
The patent applies different resolution qualities to different image output units based on their specific functional requirements and viewing importance. Not all image output units need to use high-resolution devices, allowing cost optimization while maintaining overall image quality where it matters most
Solution Approach 2:
The patent uses multiple image output units that can display different images or different portions of the same image. This allows the system to achieve high overall image quality by distributing the high-resolution requirement across multiple units rather than requiring all units to be high-resolution, thereby reducing manufacturing costs
3Illumination intensity
If the reflective unit size is increased, then the brightness is improved, but the depth of field decreases
Solution Approach 1:
The patent divides the light reflection function across multiple reflective units (first and second reflective units) positioned at different locations. Each reflective unit can be kept small to maintain deep depth of field, while the collective arrangement of multiple units provides sufficient total brightness through distributed light reflection
Solution Approach 2:
The patent compensates for the reduced brightness of individual small reflective units by distributing them across multiple spatial positions and orientations. The cumulative effect of multiple small reflective units equals or exceeds the brightness of a single large reflective unit, while maintaining the depth of field benefits of small unit sizes
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 configuration allows for a wide field of view and efficient provision of images with different resolutions, reducing manufacturing costs by allowing only some image output units to use high-resolution devices.
Implementation Method 1
a plurality of reflective units configured to transfer the respective rays of image light corresponding to the images for augmented reality and output from the plurality of image output units to a pupil of an eye of a user by reflecting the image light toward the pupil
Implementation Method 2
an optical means in which the reflective units are disposed and configured to transmit at least part of image light output from a real object therethrough toward the pupil of the eye of the user
Data Source
AI summary
The present invention relates to an optical device for augmented reality using a plurality of images for augmented reality, the optical device including: a plurality of image output units configured to output respective rays of image light corresponding to images for augmented reality; a plurality of reflective units configured to transfer the respective rays of image light to the pupil of an eye of a user; and an optical means in which the reflective units are disposed and configured to transmit at least part of image light output from a real object therethrough; wherein each of the plurality of reflective units corresponds to at least any one of the plurality of image output units, and transfers image light corresponding to an image for augmented reality and output from the corresponding image output unit to the pupil of the eye of the user.