Optical Driving Assembly for Lightweight AR Glasses
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Solution Overview
Problem
Existing glass-type electronic devices fail to achieve lightweight and transverse balance, obstruct the user's field of view, and cause image distortion, which are critical issues for augmented reality applications requiring mobility and clear, undistorted visuals.
Innovation Solution
The design includes a binocular lens system with an optical driving assembly that features an image source panel, an emitting lens group, and a reflective mirror, where the optical driving assembly is centrally located to minimize obstruction and distortion, and the electronic component case is designed with a transverse width variation and inclined mounting surfaces to optimize balance and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the optical driving assembly is positioned to provide adequate image output, then image quality is improved, but the device weight and volume increase
Solution Approach 1:
The patent implements nesting by placing the reflective mirror inside the electronic component case, which itself is mounted within the lens frame structure. This nested arrangement allows the optical driving assembly components to be compactly integrated without adding external bulk or weight, while still providing adequate image output quality through the coordinated optical path of these nested elements.
Solution Approach 2:
The patent utilizes the transverse dimension by positioning the reflective mirror on an inclined mounting surface that extends transversely across the electronic component case. This transverse arrangement allows the optical components to be distributed across the width of the device rather than stacking them vertically, reducing the overall device volume and weight while maintaining image quality through optimized optical path length.
2Manufacturing precision
If the electronic component case is enlarged to accommodate optical components, then image output is improved, but the device obstructs the user's field of view
Solution Approach 1:
The patent transitions from a vertical stacking arrangement to a transverse distribution arrangement. The reflective mirror is positioned on an inclined mounting surface that extends across the transverse width of the electronic component case, allowing the optical components to be spread out horizontally rather than vertically. This reduces the device height and prevents obstruction of the user's field of view while maintaining adequate image output quality through optimized optical path length across the transverse dimension.
Solution Approach 2:
The patent employs an asymmetric inclined mounting surface for the reflective mirror, where the inclination angle is specifically designed to optimize the optical path. This asymmetric configuration allows the optical components to be positioned in a way that minimizes field of view obstruction while still providing adequate image output, by creating an optimized light path that bypasses the central viewing area.
3Manufacturing precision
If the optical components are arranged to provide adequate image output, then image quality is improved, but image distortion occurs
Solution Approach 1:
The patent reduces image distortion by transitioning from a vertical optical path arrangement to a transverse arrangement. The reflective mirror is positioned on an inclined mounting surface that extends transversely, allowing the optical components to be distributed across the width of the device. This transverse configuration shortens the optical path length and reduces the angle of incidence, thereby minimizing optical aberrations and image distortion while maintaining adequate image output quality.
Solution Approach 2:
The patent optimizes the optical path parameters by adjusting the inclination angle of the reflective mirror mounting surface. This parameter change allows the optical components to be positioned at optimal angles to minimize optical aberrations. By carefully selecting the inclination angle, the system achieves a balance between providing adequate image output quality and minimizing image distortion through optimized light path geometry.
4Weight of moving object
If the device is designed for mobility and comfort, then weight and volume are reduced, but transverse balance is compromised
Solution Approach 1:
The patent addresses transverse balance by employing an asymmetric inclined mounting surface for the reflective mirror. The inclination angle is specifically designed to offset the weight distribution of the optical components, creating a balanced transverse profile. This asymmetric configuration allows the device to maintain mobility and comfort with reduced weight while achieving proper transverse balance through careful geometric design of the mounting surface.
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 enables a lightweight, balanced, and non-obstructive glass-type electronic device that provides clear, undistorted augmented reality visuals by centralizing the optical components and optimizing the electronic component case's layout, enhancing user experience and mobility.
Implementation Method 1
an emitting lens group exposing an exit surface to outside of the electronic component case and configured to adjust an exit angle and a focal length of the light
Implementation Method 2
a reflective mirror exposed to outside of the electronic component case and configured to reflect the light, emitted from the emitting lens group, to the binocular lens
Data Source
AI summary
Provided is a glass type electronic device including a binocular lens, a lens frame fixed to the binocular lens and seated on a head of the wearer, an electronic component case fixed to the lens frame, and an optical driving assembly mounted in the electronic component case and emitting light to the binocular lens. The optical driving lens can include an image source panel for generating light corresponding to a content image, an emitting lens group provided to expose an exit surface to an outside of the electronic component case and for adjusting an exit angle and a focal length of the light, and a reflective mirror provided to expose a reflection surface to an outside of the electronic component case and for reflecting the light, emitted from the emitting lens group, to the binocular lens.