Wearable Image Display Modular Optical Sections
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Solution Overview
Problem
Existing wearable image displays face maintenance and usability challenges due to integrated structures, where the image generator and light guide unit are difficult to maintain separately, and the controller and frame are connected via a cable, making them cumbersome to use.
Innovation Solution
A wearable image display with separately divided image source and display side sections, featuring an image light output unit, image light transmission unit, and image light emitting unit, including a light source, light control component, reflective image modulation device, polarization beam splitter, light reflector, quarter-wave plate, and half mirrors, allowing for easy detachment and reattachment for maintenance and use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the image generator and light guide unit are structured integrally, then the device can be easily mounted on the head, but these components cannot be easily maintained individually
Solution Approach 1:
The patent divides the integrated structure into separate modules: the image generator unit and the light guide unit are separated and connected via a flexible cable. This allows the image generator to be maintained or replaced independently while the light guide unit remains mounted on the head, resolving the contradiction between easy mounting and easy maintenance.
Solution Approach 2:
The image generator is extracted from the head-mounted structure and placed in a separate controller unit connected by cable. This extraction enables the image generator to be carried in a pocket or bag independently, allowing easy maintenance while the lightweight light guide unit remains on the user's head for continuous operation.
2Ease of repair
If the controller and frame are connected via cable, then individual maintenance is easier, but the device becomes cumbersome to use
Solution Approach 1:
The patent applies different quality requirements to different parts: the frame (light guide unit) is made lightweight and compact for comfortable head-wearing, while the controller (image generator) can be larger and carried separately. The flexible cable connects these differently optimized components, allowing the head-mounted portion to remain convenient while enabling easy maintenance of the separate controller unit.
3Volume of moving object
If the image generator is integrated with the light guide unit, then the structure is compact, but maintenance requires disassembling the entire unit
Solution Approach 1:
The system is segmented into a compact light guide unit for head-wearing and a separate image generator connected by flexible cable. This segmentation maintains compactness where needed (on the head) while enabling easy maintenance of the image generator by simply disconnecting the cable, without requiring disassembly of the light guide unit.
4Ease of repair
If the controller is held in hand or carried separately, then maintenance is easier, but the device cannot be used easily
Solution Approach 1:
The image generator is extracted from the head-mounted structure and can be carried in a pocket or bag, making it easily accessible for maintenance. The flexible cable allows the user to wear only the lightweight light guide unit on the head while carrying the controller separately, maintaining usage convenience while enabling easy maintenance when needed.
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 easy maintenance and convenient use by allowing separate handling and attachment of the image source and display sections, improving usability and manufacturing efficiency while ensuring stable image quality and uniform brightness.
Implementation Method 1
a polarization beam splitter for reflecting the controlled light from the light control component to the reflective image modulation device
Implementation Method 2
a quarter-wave plate disposed between the polarization beam splitter and the light reflector
Implementation Method 3
a light guide plate for guiding the image light relayed by the transit optics to the image light output unit
Implementation Method 4
a plurality of half mirrors disposed in a light guide plate for emitting the image light guided in the light guide plate to the outside
Data Source
AI summary
In order to allow easy maintenance and convenient usage, the present invention is provided with an image light output unit, an image light transmitting unit, and an image light emitting unit. The image light output unit and a portion of the image light transmitting unit constitute an image source-side section. The remainder of the image light transmitting unit and the image light emitting unit constitute an image display-side section. The image source-side section and the image display-side section are respectively divided into separate unit structures. As a result, the present invention allows for easy maintenance and convenient usage.