Near-Eye Display Optics for Multi-Depth Focus Without Heavy Assemblies
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Solution Overview
Problem
Traditional near-eye displays require complex and heavy optical assemblies to adjust focus, which are cumbersome for users and increase manufacturing costs, limiting their acceptance and expansion in consumer markets.
Innovation Solution
A near-eye displaying method that enables lights emitted by two pixels to intersect and focus at different locations, using self-emissive displays, collimators, and collimated light direction altering units like microlenses, liquid crystal spatial light modulators, or flat metalenses to create multiple depths of field without the need for redundant optical elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex and heavy optical assembly is used to adjust focus, then image focus can be adjusted, but device weight increases and manufacturing cost increases
Solution Approach 1:
The patent extracts the focus adjustment function from the complex optical assembly and implements it through a computational algorithm that calculates light beam intersection points. This removes the need for heavy physical optical components while maintaining the ability to adjust image focus, directly resolving the contradiction between focus adjustment capability and device weight.
Solution Approach 2:
The patent replaces the mechanical optical assembly with a computational system that uses algorithms to determine light beam paths and intersection points. This substitution eliminates moving mechanical parts and heavy optical components, achieving focus adjustment through calculation rather than physical manipulation, thereby reducing device weight while maintaining focus adjustment capability.
2Reliability
If complex and heavy optical assembly is used to adjust focus, then image focus can be adjusted, but manufacturing cost increases
Solution Approach 1:
The patent extracts the focus adjustment functionality from expensive optical assemblies and implements it through software algorithms that calculate light beam intersections. This extraction eliminates the need for costly optical components and their associated manufacturing processes, reducing manufacturing cost while preserving focus adjustment capability.
Solution Approach 2:
The patent substitutes mechanical optical systems with computational algorithms, replacing expensive physical components with software-based solutions. This substitution significantly reduces manufacturing costs as algorithms can be implemented without costly materials or complex assembly processes, while maintaining the essential focus adjustment function.
3Reliability
If traditional optical assembly is used, then focus adjustment is achievable, but device complexity increases
Solution Approach 1:
The patent extracts the focus adjustment function from the complex optical assembly and relocates it to a computational domain. By calculating light beam intersection points algorithmically, the system removes the need for complex optical components and their intricate arrangements, simplifying the overall device architecture while maintaining focus adjustment capability.
Solution Approach 2:
The patent replaces the complex mechanical optical system with a computational approach that uses algorithms to determine light paths and focus points. This substitution eliminates moving parts, alignment mechanisms, and complex optical component arrangements, dramatically reducing device complexity while preserving the essential focus adjustment function.
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
This method reduces manufacturing costs and enhances displaying efficiency by allowing multiple depths of field imaging without the need for heavy optical assemblies, providing a more comfortable user experience and expanding market potential.
Implementation Method 1
one or more pixels of a self-emissive display emitting a light to a collimator such that the light passing through the collimator is collimated to form a collimated light
Implementation Method 2
providing at least one collimated light direction altering unit on a path of the light from the collimator to change direction of the collimated light to enable the collimated light from at least two pixels to intersect and focus at a different location
Data Source
AI summary
Disclosed are near-eye displaying methods and systems capable of multiple depths of field imaging. The method comprises two steps. At a first step, one or more pixels of a self-emissive display emit a light to a collimator such that the light passing through the collimator is collimated to form a collimated light. At a second step, the self-emissive display provides at least one collimated light direction altering unit on a path of the light from the collimator to change direction of the collimated light to enable the collimated light from at least two pixels to intersect and focus at a different location so as to vary a depth of field.