Detachable Light Guide Plate Unit for Wearable Displays
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Solution Overview
Problem
Conventional wearable devices with integrated display units do not allow for the replacement of light guide plate units, necessitating the purchase of a new device when the light guide plate becomes dirty, damaged, or when a design change is desired.
Innovation Solution
An optical apparatus featuring a light guide plate unit, an optical unit, and a fixing mechanism that detachably secures the light guide plate unit, enabling easy replacement and alignment through a positioning structure with pins and a cap unit that covers the light guide plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the light guide plate unit is integrally fixed to the optical unit, then the optical alignment is maintained, but the light guide plate unit cannot be replaced
Solution Approach 1:
The device is divided into separable components: the optical unit and the light guide plate unit are detached from each other through a fixing mechanism with pins and fitting portions. This segmentation allows the light guide plate unit to be independently replaced while maintaining the overall structural integrity and optical alignment through precise positioning features.
Solution Approach 2:
The positioning pins are inserted through the light guide plate unit and fitted into corresponding holes in the optical unit, creating a nested arrangement where the light guide plate unit is positioned within the optical unit structure. This nesting enables secure attachment while allowing for controlled detachment and replacement.
2Manufacturing precision
If pins are used for positioning, then the alignment precision is improved, but the risk of pin loss increases
Solution Approach 1:
The fixing unit acts as an intermediary component between the light guide plate unit and the optical unit. It provides a structured interface with multiple pins and corresponding fitting portions, ensuring that pins remain retained during assembly and disassembly operations while maintaining precise alignment through the positioning features.
Solution Approach 2:
The fixing mechanism is designed to allow for the controlled detachment and reattachment of the light guide plate unit. The pins are recovered during disassembly and can be reused in subsequent assembly operations, maintaining alignment precision while enabling replaceability.
3Ease of operation
If the light guide plate unit is detachably fixed, then the replaceability is enabled, but the fixing mechanism becomes more complex
Solution Approach 1:
The fixing mechanism is segmented into distinct functional elements: positioning pins, fitting portions, and a cap unit. This segmentation simplifies the overall structure by assigning specific functions to each component, making the detachment and attachment processes straightforward while maintaining ease of replacement.
Solution Approach 2:
Instead of using complex locking mechanisms to secure the light guide plate unit, the design inverts the approach by using simple positioning pins and fitting portions that guide the assembly process. The cap unit provides a user-friendly interface for attachment and detachment, simplifying operation while maintaining security.
Data Source
AI summary
The present technology provides an optical apparatus in which different light guide plate units can be used. The present technology provides an optical apparatus including: a light guide plate unit including a light guide plate; an optical unit that guides incident light to the light guide plate unit; and a fixing mechanism that detachably fixes the light guide plate unit to the optical unit. In accordance with the present technology, an optical apparatus in which different light guide plate units can be used can be provided.