AR Glasses Optical Engine Weight Reduction via Temple Arm Mounting
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Solution Overview
Problem
Current AR glasses are bulky and heavy, leading to discomfort and poor user experience when worn for extended periods.
Innovation Solution
The design incorporates multiple display screens emitting different monochromatic colors, a color combination device to fuse these colors, a projection lens, and a waveguide element, resulting in a compact and lightweight structure that enhances user comfort and experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional AR glass components are used, then display and interaction functions are achieved, but the glasses become large in size and overweight
Solution Approach 1:
The patent combines multiple optical components (display screen, optical engine, waveguide, focus adjustment mechanism) into an integrated modular assembly that is mounted on the temple arm of the glasses. This merging approach allows the heavy components to be consolidated in one location rather than distributed throughout the frame, reducing overall perceived weight and improving balance.
Solution Approach 2:
The patent moves the heavy optical components from the front of the glasses (where they would directly affect the user's face and balance) to the temple arm (side mounting). This spatial repositioning in another dimension improves weight distribution and comfort while maintaining all AR display functions.
2Adaptability or versatility
If traditional AR glass components are used, then display and interaction functions are achieved, but the glasses appear bulky in appearance
Solution Approach 1:
The patent integrates the display screen, optical engine, and waveguide into a compact modular unit mounted on the temple arm. This merging eliminates the need for bulky front-mounted components, resulting in a sleek, minimalist appearance that resembles traditional glasses while maintaining full AR functionality.
Solution Approach 2:
The patent extracts the heavy optical components from the traditional front-mounted configuration and relocates them to the temple arm. This extraction and repositioning creates a clean, uncluttered front appearance while preserving all display and interaction functions in the relocated components.
3Adaptability or versatility
If traditional AR glass components are used, then display functions are achieved, but they feel very uncomfortable when worn for a long time
Solution Approach 1:
The patent relocates heavy optical components from the front (directly on the user's face) to the temple arm (side mounting). This dimensional change in component placement significantly improves comfort for extended wear by distributing weight away from the face and improving balance, while maintaining full AR display functionality.
Solution Approach 2:
The patent incorporates a focus adjustment mechanism that allows dynamic adaptation of the optical path to match the user's viewing distance preferences. This dynamic adjustment capability enhances comfort during prolonged use by allowing users to optimize the display for their specific needs, reducing eye strain and fatigue.
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 enables AR glasses that are comfortable to wear for long times, providing a better user experience through a compact and lightweight design while maintaining effective image formation and display capabilities.
Implementation Method 1
the color combination device used for fusing the monochromatic colors emitted by the display screens to form an image
Implementation Method 2
a waveguide element, disposed on one side of the projection lens away from the color combination device
Data Source
AI summary
AR glasses includes a display device, a color combination device (20), a projection lens (50), and a waveguide element (60). The display device includes multiple display screens. The display screens are respectively arranged around the color combination device (20). The color combination device (20) can be used for fusing the monochromatic colors emitted by the display screens to form an image. Light that constitutes the image enters user's eyes after being transmitted through the projection lens (50) and the waveguide element (60). The AR glasses have a compact structure and light weight to be worn for a long time.