Side-Mounted Optical Engine for Glasses-Type Display
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Solution Overview
Problem
Wearable display apparatuses, such as glasses-type displays, face challenges in mechanical stability and external shape limitations due to the need for lightness and thinness, which can lead to misalignment of optical components and user discomfort.
Innovation Solution
A glasses-type display apparatus with an improved mechanical arrangement, featuring an optical engine integrated into the side portions of a waveguide, utilizing a fixing member to adjust the optical axis and a light path changer to minimize the size of the optical components, allowing for accurate alignment and reduced distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the wearable display apparatus is made light and thin to be worn by users, then the weight and thickness are reduced, but the mechanical stability deteriorates
Solution Approach 1:
The patent relocates the optical engine from a conventional position to the side portion of the waveguide, utilizing previously unused spatial dimensions. This dimensional reconfiguration allows for better weight distribution and improved mechanical stability without increasing the overall weight or thickness of the wearable device.
Solution Approach 2:
The patent introduces a fixing member with adjustable projection position capability that can be localized at specific positions around the waveguide. This allows for precise local adjustment of the optical engine's position to optimize mechanical stability and alignment, rather than requiring uniform reinforcement throughout the entire structure.
2Weight of moving object
If the optical components are minimized in size to reduce device weight, then the weight is reduced, but the alignment precision deteriorates
Solution Approach 1:
The patent employs a fixing member with adjustable projection position capability, transforming the static optical engine mounting into a dynamic,可调 system. This allows for precise alignment adjustment of the optical engine relative to the waveguide, ensuring accurate optical component alignment even when components are minimized in size.
3Stability of the object's composition
If the optical engine is positioned at the side portion of the waveguide to improve mechanical stability, then the mechanical stability is improved, but the device complexity increases
Solution Approach 1:
The fixing member serves multiple functions: it mounts the optical engine to the waveguide, allows for projection position adjustment, and provides alignment correction. This multi-functionality reduces the need for separate adjustment mechanisms, thereby limiting the increase in device complexity while achieving improved mechanical stability.
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
Enhances mechanical stability, maintains accurate alignment of optical components, and reduces user discomfort by minimizing the size and weight of the display apparatus while maintaining a conventional glasses design, thus improving the overall user experience.
Implementation Method 1
a waveguide including an input region for receiving the projected light and an output region for outputting at least a portion of the received light
Data Source
AI summary
Provided is a glasses-type display apparatus. The glasses-type display apparatus includes an optical engine configured to project light containing an image; a waveguide including an input region for receiving the projected light and an output region for outputting at least a portion of the received light; and a glasses-type body for holding the waveguide and the optical engine where a portion of the optical engine is arranged at a side portion of the waveguide.