Composite Diffraction Element Void Support for Image Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing composite diffraction elements face challenges with nonuniformity of images due to bubbles and dust, and the process of peeling and reaffixing diffraction elements on support materials can lead to distortion and breakage of optical connections, affecting the quality of image display devices.
Innovation Solution
A composite diffraction element design featuring at least two diffraction elements with reflection surfaces facing each other across a void in a support body, which allows for separate interference exposure and reduces the risk of dust and distortion by avoiding direct contact between the diffraction elements and the support body, thereby maintaining optical connection integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If diffraction elements are placed close to each other on a support body, then the composite diffraction element can achieve wavelength and angular selectivity, but exposure becomes difficult due to mutual influence between the diffraction elements
Solution Approach 1:
The patent divides the support body into separate regions for each diffraction element, with each element positioned in its own void. This segmentation allows each diffraction element to be exposed independently without mutual interference, while still maintaining the close proximity needed for the composite diffraction element to function effectively.
Solution Approach 2:
The patent introduces voids as intermediary spaces between the diffraction elements and the support body. These voids act as mediators that prevent direct contact between the diffraction elements and the support body, eliminating mutual influence during exposure while maintaining the structural integrity and close spacing required for optical functionality.
2Stability of the object's composition
If diffraction elements are affixed to a support material, then the diffraction elements can be held in place, but minute dust may be mixed in or distortion may occur, breaking optical connections
Solution Approach 1:
The patent uses voids as intermediary spaces that separate the diffraction elements from direct contact with the support body. This intermediary structure provides mechanical support and stability while preventing dust contamination and distortion that would occur with direct affixing, thereby maintaining optical connection integrity.
Solution Approach 2:
The patent employs a configuration where diffraction elements are held in voids rather than being rigidly affixed to the support body. This approach类似于using a flexible mounting structure that allows for precise positioning without the constraints and contamination risks of traditional affixing methods.
3Ease of manufacture
If a temporary holding material is used for exposure and then reaffixing to final holding material, then exposure can be performed, but the process becomes complex and time-consuming
Solution Approach 1:
The patent extracts the diffraction elements from the support body during the exposure process by placing them in separate voids. This allows exposure to be performed directly on the final holding structure without requiring a temporary holding material, thereby eliminating the complex peeling and reaffixing operations while maintaining exposure feasibility.
4Adaptability or versatility
If diffraction elements are placed close to each other, then the composite structure can be achieved, but bubbles may form causing image nonuniformity
Solution Approach 1:
The patent introduces voids as intermediary spaces between diffraction elements that are placed close to each other. These voids prevent bubble formation by providing a controlled interface that eliminates air pockets and other contaminants, thereby maintaining image uniformity while allowing the composite structure to achieve its full optical functionality.
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 design prevents nonuniformity of images caused by bubbles and improves the quality of image display devices by ensuring consistent optical connections and reducing the risk of dust and distortion during the manufacturing and assembly processes.
Implementation Method 1
at least two diffraction elements 101, 102 each having a light reflection surface 105, 107
Implementation Method 2
a composite diffraction element 100 which includes... at least two diffraction elements 101, 102
Implementation Method 3
a photosensitive material layer 105, 107 on which a reflection surface is formed... undergo interference exposure
Data Source
AI summary
To provide a composite diffraction element capable of preventing nonuniformity of an image due to, for example, a bubble and improving quality. A composite diffraction element 100 includes: at least two diffraction elements 101 and 102 each having a reflection surface that reflects light; and a support body 103 placed between each of the diffraction elements 101 and 102, the support body 103 having a void 108, and each of the diffraction elements 101 and 102 are placed, facing each other across the void 108. Furthermore, in the composite diffraction element 100, the diffraction elements 101 and 102 are reflective diffraction elements, and transmit projected light while diffracting the projected light selectively. The diffraction elements 101 and 102 are volume hologram elements having protective layers 104 and 106, and photosensitive material layers 105 and 107 on each of which the reflection surface is formed.