Hands-Free Head Mount with Adjustable Converging Lenses
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Solution Overview
Problem
Conventional head mounts for electronic display units require users to hold the device with one or both hands, limiting the ability to use control options freely.
Innovation Solution
A hands-free head mount with adjustable optical converging lenses and sensors that allow independent adjustment for each eye, enabling precise focus and alignment without the need for electrical contacts, and incorporating a safety latch and optional inertial measurement unit for enhanced control and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hands-free head mount is used to hold the display unit, then the user can control the unit without difficulty and both hands are free for operating controls, but the device complexity increases due to adjustable lenses and sensors
Solution Approach 1:
The patent implements dynamic adjustability of the optical converging lenses along their optical axes and transverse to the optical axes, allowing the system to adapt to different user needs and eye distances. This dynamic configuration enables hands-free operation while maintaining ease of use through automated or user-adjustable positioning.
Solution Approach 2:
The patent replaces manual mechanical adjustment mechanisms with sensor-based systems that automatically detect and measure the distance between converging lenses and the user's eyes. This substitution of mechanical measurement with sensor-based detection reduces the complexity of manual adjustment while maintaining or improving ease of operation.
2Adaptability or versatility
If adjustable optical converging lenses are mounted to be adjustable in the direction of the optical axis, then the user can adjust the focus to personal needs, but the device complexity increases
Solution Approach 1:
The patent applies dynamics by making the optical converging lenses adjustable along their optical axes, allowing the focus distance to be dynamically changed according to each user's personal needs. This adjustability enhances adaptability while the systematic implementation keeps the complexity manageable.
Solution Approach 2:
The patent changes the parameter of lens position along the optical axis to enable focus adjustment. By systematically varying this parameter, the system achieves adaptability for different user needs without requiring overly complex mechanisms, as the adjustment is performed in a controlled manner.
3Adaptability or versatility
If two converging lenses are mounted adjustable in a direction transverse to the optical axes, then the distance between lenses can be adjusted for each eye, but the device complexity increases
Solution Approach 1:
The patent implements dynamics by allowing transverse adjustment of the two converging lenses independently, enabling the distance between lenses to be adapted to match each user's inter-eye distance. This dynamic adjustment enhances personalization while the independent adjustment capability keeps the mechanism relatively simple.
Solution Approach 2:
The patent applies segmentation by treating the two converging lenses as independently adjustable elements rather than a single unified mechanism. This segmentation allows each lens to be adjusted independently, simplifying the overall mechanism while achieving precise adaptation to individual user needs.
4Measurement precision
If sensors are provided to sense the distance between the two converging lenses, then the presentation can be adapted for each individual use, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical measurement systems with sensor-based detection to measure the distance between converging lenses and the user's eyes. This substitution provides precise measurement capability while keeping the overall system complexity manageable through the use of compact sensor elements.
Solution Approach 2:
The patent implements feedback by using sensors to detect the actual distances and using this information to adjust the lens positioning and presentation parameters. This feedback mechanism enables precise adaptation to individual users while the automated feedback loop reduces the need for manual measurement and adjustment.
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
Enables users to control the electronic display unit without hands, providing a natural and realistic viewing experience while maintaining the ability to use controls and camera functions, and allowing for augmented reality applications.
Implementation Method 1
An optical converging lens is placed between the front face of the frame that fits against the user's head and the rear face that has the holder or retainer for the device. This is done to reduce the length of the tube section, i.e., the length of the frame, to a manageable size.
Implementation Method 2
At least one sensor that senses the distance between the two converging lenses is provided in the carrier device according to the invention.
Data Source
AI summary
A carrier device for an electronic display unit, having a frame with a front face and a rear face, whereby the front face has a seating surface for placing against the forehead of a user and the rear face has a surface designated a device mount, against which the electronic display unit is placed. The electronic display unit is a device separate from the carrier device. At least one optical converging lens is placed between the front and rear faces of the frame. The carrier device is constructed to be mounted or carried on the head of a user, thereby enabling hands-free viewing of the electronic display unit.