Light-Emitting Device Phase Modulation Layer Inclined Lattice
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Solution Overview
Problem
Conventional light-emitting devices with phase modulation layers have limited design flexibility due to fixed positional relationships between modified refractive index regions and lattice points, restricting the range of optical image formation directions.
Innovation Solution
A light-emitting device with a phase modulation layer where the gravity-center positions of modified refractive index regions are arranged on straight lines passing through lattice points and inclined with respect to the lattice, allowing for individual adjustment of distances to form optical images in various directions, including normal and inclined directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the gravity-center positions of modified refractive index regions are arranged according to conventional fixed positional relationships with lattice points, then the manufacturing process is simplified, but the design flexibility and range of optical image formation directions are limited
Solution Approach 1:
The patent applies asymmetry by arranging the gravity-center positions of modified refractive index regions on straight lines that are inclined with respect to the virtual square lattice, rather than using symmetric arrangements relative to lattice points. This asymmetric positioning enables the light-emitting device to form optical images in inclined directions in addition to normal directions, thereby expanding design flexibility without significantly increasing manufacturing complexity
Solution Approach 2:
The patent introduces an additional degree of freedom by allowing gravity-center positions to be arranged on inclined straight lines passing through lattice points, rather than being constrained to positions relative to lattice points only. This dimensional extension in the positional arrangement space enables control over optical image formation in multiple directions (both normal and inclined), enhancing adaptability while maintaining a systematic structure
2Adaptability or versatility
If the gravity-center positions are fixed relative to lattice points, then the manufacturing precision is easier to control, but the range of optical image formation directions is restricted
Solution Approach 1:
The patent uses preliminary action by establishing a virtual square lattice as a reference framework before determining the final positions of modified refractive index regions. The gravity-center positions are predetermined to lie on specific inclined straight lines passing through lattice points, which simplifies the manufacturing process by providing clear positional guidelines while still enabling diverse optical image formation directions
3Adaptability or versatility
If conventional fixed positional relationships are used, then the device structure is simpler, but the design range of phase modulation layer is limited
Solution Approach 1:
The patent applies segmentation by dividing the phase modulation layer into a systematic array of modified refractive index regions positioned according to a virtual square lattice framework. Each region's gravity-center position is independently determined based on its relationship to the lattice structure, allowing for modular design and fabrication while achieving complex optical image formation capabilities in multiple directions
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 configuration expands the design range of the phase modulation layer, enabling the formation of optical images with arbitrary shapes in multiple directions, improving the flexibility and efficiency of light emission.
Implementation Method 1
The phase modulation layer has a base layer and a plurality of modified refractive index regions each of which has a refractive index different from a refractive index of the base layer
Data Source
AI summary
The embodiment relates to a light-emitting device in which a positional relationship between a modified refractive index region's gravity-center position and the associated lattice point differs from a conventional device, and a production method. In this device, a stacked body including a light-emitting portion and a phase modulation layer optically coupled to the light-emitting portion is on a substrate. The phase modulation layer includes a base layer and plural modified refractive index regions in the base layer. Each modified refractive index region's gravity-center position locates on a virtual straight line passing through a corresponding reference lattice point among lattice points of a virtual square lattice on the base layer's design plane. A distance between the reference lattice point and the modified refractive index region's gravity center along the virtual straight line is individually set such that this device outputs light forming an optical image.