Micro Light Emitting Units for Lensless Head Mounted Display
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Solution Overview
Problem
Traditional head-mounted devices are bulky and heavy due to the need for optical lenses, which increases manufacturing and maintenance costs and compromises user experience.
Innovation Solution
A display panel using micro light emitting units that project images directly to the observer's eyes from multiple angles without lenses, reducing the device's volume and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If optical lenses are used to image the display panel, then the head mounted device can provide theater-level visual effects and allow people to see large-size images, but the device becomes heavier and bulkier
Solution Approach 1:
The patent extracts and removes the optical lens component from the traditional head-mounted display system. By using micro light emitting units that directly emit light without requiring lenses for imaging, the patent eliminates the heavy optical module while maintaining the ability to provide large-size virtual images and theater-level visual effects.
Solution Approach 2:
The patent replaces the mechanical optical system (lenses) with a direct light emission system. Instead of using optical lenses to focus and project light from a display panel, the invention uses micro light emitting units that directly emit light in multiple directions to form virtual images, substituting the mechanical optical path with a more compact light emission approach.
2Illumination intensity
If optical lenses are used to image the display panel, then the head mounted device can provide theater-level visual effects, but the device becomes more complex and requires high assembly precision
Solution Approach 1:
The patent extracts and removes the optical lens component from the traditional head-mounted display system. By using micro light emitting units that directly emit light without requiring lenses for imaging, the patent eliminates the heavy optical module while maintaining the ability to provide large-size virtual images and theater-level visual effects.
Solution Approach 2:
The patent replaces the mechanical optical system (lenses) with a direct light emission system. Instead of using optical lenses to focus and project light from a display panel, the invention uses micro light emitting units that directly emit light in multiple directions to form virtual images, substituting the mechanical optical path with a more compact light emission approach.
3Reliability
If the object distance from the display panel to the lenses is fixed and the optical path is kept clear, then the imaging function is maintained, but the volume of the head mounted device becomes large
Solution Approach 1:
The patent replaces the mechanical optical system (lenses) with a direct light emission system. Instead of using optical lenses to focus and project light from a display panel, the invention uses micro light emitting units that directly emit light in multiple directions to form virtual images, substituting the mechanical optical path with a more compact light emission approach.
Solution Approach 2:
The patent transitions from a traditional two-dimensional display panel requiring three-dimensional optical path space to micro light emitting units that emit light in multiple dimensions simultaneously. Each micro light emitting unit can emit light in different directions to form virtual images at various distances, effectively utilizing spatial dimensions to reduce the overall device volume while maintaining imaging functionality.
4Volume of moving object
If a more complex optical path is designed to reduce the volume of the head mounted device, then the device size is reduced, but the manufacturing and maintenance costs greatly increase
Solution Approach 1:
The patent extracts and removes the optical lens component from the traditional head-mounted display system. By using micro light emitting units that directly emit light without requiring lenses for imaging, the patent eliminates the heavy optical module while maintaining the ability to provide large-size virtual images and theater-level visual effects.
Solution Approach 2:
The patent replaces the mechanical optical system (lenses) with a direct light emission system. Instead of using optical lenses to focus and project light from a display panel, the invention uses micro light emitting units that directly emit light in multiple directions to form virtual images, substituting the mechanical optical path with a more compact light emission approach.
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
The solution allows for a smaller, lighter head-mounted device with reduced manufacturing and maintenance costs while maintaining a good viewing experience by eliminating the need for lenses.
Implementation Method 1
a plurality of micro light emitting units (12a to 12e) are arranged and disposed on the substrate (10)
Data Source
AI summary
The present invention discloses a display panel and a head mounted device. The display panel includes a substrate and a plurality of micro light emitting units. A first position and a second position are defined at an edge and a center of the substrate respectively. The micro light emitting units are arranged and disposed on the substrate. Any two of the micro light emitting units are disposed at the first position and the second position respectively. Wherein each micro light emitting unit defines a luminating top surface, and a reference angle is defined between each luminating top surface and a reference plane respectively. Wherein the reference angle defined between each luminating top surface and the reference plane gradually decreases from the first position to the second position, and the luminating top surface of the micro light emitting unit located at the second position is parallel to the reference surface.