Compact Display Apparatus with Nested Optical Components
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Solution Overview
Problem
Conventional display apparatuses for virtual, augmented, and mixed reality are bulky due to complex component arrangements and space constraints, making them either too large and cumbersome or too small to effectively accommodate optical components, leading to design challenges.
Innovation Solution
A compact display apparatus with a plurality of housings connected by an adjustable device, featuring a first image source, a second image source with higher resolution and narrower field of view, an optical combiner for image superimposition, a magnification lens to increase field of view, an eyepiece lens to reduce focal distance, and a controller to compensate for distortion, allowing for a simple and user-friendly design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional specialized devices are designed to be large in size to accommodate components, then components can be properly arranged at specific positions, but the device becomes bulky and cumbersome to use
Solution Approach 1:
The patent integrates multiple optical components (optical combiner, magnification lens, eyepiece lens) into a nested arrangement where components are positioned within each other's optical paths. The optical combiner is positioned to receive light from image sources, the magnification lens is placed between the combiner and image sources, and the eyepiece lens is positioned near the user's eye, creating a compact nested structure that reduces overall device size while maintaining proper component spacing
Solution Approach 2:
The patent transitions from a linear arrangement of components to a three-dimensional optical path configuration. By positioning components in different spatial dimensions and utilizing angular offsets between image sources and the optical combiner, the design achieves proper component separation in a compact form factor, effectively using spatial dimensions to resolve the contradiction between component arrangement requirements and device size
2Ease of operation
If conventional specialized devices are designed to be small in size, then portability is improved, but accommodating components within the device becomes challenging due to space limitations and optical path requirements
Solution Approach 1:
The patent merges multiple optical functions into a compact integrated assembly. The optical combiner simultaneously serves as a beam splitter and combiner for multiple image sources, the magnification lens combines magnification and field-of-view expansion functions, and the eyepiece lens integrates focus adjustment and eye relief functions. This merging of functions into compact components enables small device size while maintaining all necessary optical capabilities
Solution Approach 2:
The patent incorporates adjustable elements that allow dynamic optimization of the optical path. The adjustable device modifies the spacing between housings to accommodate different user requirements, and the optical components are positioned to allow adjustment of focal lengths and field of view. This dynamic adjustability enables the compact device to adapt to various usage conditions without requiring larger fixed dimensions
3Measurement precision
If the second image source with higher resolution is used, then image quality is improved, but the narrower field of view reduces the overall viewing experience
Solution Approach 1:
The magnification lens serves as an optical intermediary between the second image source and the optical combiner. It magnifies the high-resolution image from the second image source, effectively expanding the field of view while preserving the high resolution. The lens acts as a mediator that transforms the narrow field of view output into a wider angular coverage without sacrificing image quality
Solution Approach 2:
The patent changes the optical parameters of the light path by introducing the magnification lens, which alters the angular distribution of light rays from the second image source. By adjusting the focal length and position of the magnification lens, the system expands the field of view parameter while maintaining the high resolution parameter, effectively decoupling these two previously conflicting specifications
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 provides a compact, user-friendly display apparatus that effectively presents a simulated environment with improved component arrangement and optical performance, addressing the bulkiness and space constraints of conventional devices.
Implementation Method 1
an optical combiner positioned in the housing between the first and second image sources, on which a first image from the first image source and a second image from the second image source are superimposed and made visible to a user's eye
Implementation Method 2
a magnification lens for magnifying the second image to increase the image field of view, wherein the magnification lens is attached to the housing between the second image source and the optical combiner
Implementation Method 3
an eyepiece lens for reducing a focal distance between the optical combiner and the user's eye, wherein the eyepiece lens is mounted to a side of the housing opposite the first image source, wherein the eyepiece lens is interposed between the optical combiner and the user's eye
Data Source
AI summary
A display apparatus includes a plurality of housings connected by adjustable device for setting spacing between centers of the plurality of housings, each housing including: first image source mounted to side of housing; second image source mounted to housing angularly offset from first image source, wherein second image source includes higher resolution and narrower image field of view than first image source; optical combiner positioned in housing between first and second image sources, on which first image from first image source and second image from second image source are superimposed and made visible to user's eye; magnification lens for magnifying second image to increase image field of view; eyepiece lens for reducing focal distance between the optical combiner and the user's eye; and controller configured to control output of second image source to render colors to compensate for distortion and chromatic aberrations introduced by magnification lens.