Pinhole Array Layer for Lensless Barcode Scanning
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Solution Overview
Problem
Barcode scanning technologies require focusing mechanisms, which increase time and power consumption due to the need for lenses, limiting efficiency and practicality in applications like mobile payment and logistics.
Innovation Solution
A display device comprising a display array with self-luminous elements, an imaging array, and a pinhole array layer that allows for barcode imaging without lenses by using pinholes to transmit light and separate imaging pixels, enabling efficient barcode scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a lens is used for focusing in barcode scanning, then imaging accuracy is improved, but time consumption and power consumption increase
Solution Approach 1:
The patent removes the lens component from the barcode scanning system entirely. Instead of using a lens for focusing, the invention employs a pinhole array layer that directly transmits light to imaging pixels without requiring optical focusing elements, thereby eliminating the time and power consumption associated with lens-based focusing mechanisms while maintaining imaging accuracy through the pinhole aperture principle
Solution Approach 2:
The patent introduces a pinhole array layer as an intermediary component between the light source and imaging pixels. This pinhole array serves as a mediator that enables light transmission and image formation without requiring a lens, thus resolving the contradiction by providing an alternative mechanism that achieves imaging accuracy without the temporal and energetic costs of lens-based focusing
2Measurement precision
If a lens is used for focusing in barcode scanning, then imaging accuracy is improved, but power consumption increases
Solution Approach 1:
The patent removes the lens component from the barcode scanning system entirely. Instead of using a lens for focusing, the invention employs a pinhole array layer that directly transmits light to imaging pixels without requiring optical focusing elements, thereby eliminating the time and power consumption associated with lens-based focusing mechanisms while maintaining imaging accuracy through the pinhole aperture principle
Solution Approach 2:
The patent introduces a pinhole array layer as an intermediary component between the light source and imaging pixels. This pinhole array serves as a mediator that enables light transmission and image formation without requiring a lens, thus resolving the contradiction by providing an alternative mechanism that achieves imaging accuracy without the temporal and energetic costs of lens-based focusing
3Loss of time
If a pinhole array layer is used instead of a lens, then time and power consumption are reduced, but device complexity changes
Solution Approach 1:
The patent removes the lens component from the barcode scanning system entirely. Instead of using a lens for focusing, the invention employs a pinhole array layer that directly transmits light to imaging pixels without requiring optical focusing elements, thereby eliminating the time and power consumption associated with lens-based focusing mechanisms while maintaining imaging accuracy through the pinhole aperture principle
Solution Approach 2:
The patent introduces a pinhole array layer as an intermediary component between the light source and imaging pixels. This pinhole array serves as a mediator that enables light transmission and image formation without requiring a lens, thus resolving the contradiction by providing an alternative mechanism that achieves imaging accuracy without the temporal and energetic costs of lens-based focusing
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
Enables barcode scanning without the need for focusing elements, reducing time and power consumption while maintaining accuracy, thus enhancing the efficiency and usability of barcode scanning in various applications.
Implementation Method 1
a pinhole array layer disposed at a side of the imaging array facing to a light exiting direction of the display panel, and including a plurality of pinholes which are arrayed
Implementation Method 2
Each of the imaging pixels includes a switch transistor and a photodiode which are electrically connected
Data Source
Figure 1~2b
Figure 2c~3b
Figure 4a~5
AI summary
A display panel and a display device are disclosed. The display panel (100) includes a display array (110), an imaging array (120) and a pinhole array layer (130). The display array (110) includes a plurality of display pixels (111) which are arrayed, and each of the display pixels (111) includes a luminous element (113). The imaging array (120) is disposed at a side of the display array (110) facing away from a light exiting direction of the display panel (100), and includes a plurality of imaging pixels (121) which are arrayed. The pinhole array layer (130) is disposed at a side of the imaging array (120) facing to the light exiting direction of the display panel (100), and includes a plurality of pinholes (131) which are arrayed, the plurality of pinholes (131) are corresponding to the plurality of imaging pixels (121). The display device (10) includes the above-mentioned display panel (100), a display driver circuit (163) and an image detection circuit (173).