Transparent Flat Panel Scanning With Light Shielding and Micro Lenses
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Solution Overview
Problem
Scanning devices are large and cumbersome, requiring manual placement of objects for scanning, and their accuracy is compromised due to light interference between light emitting and sensing elements in flat transparent panels.
Innovation Solution
A flat panel scanning device with a transparent design incorporating micro lenses, light shielding walls, and light shielding-reflecting layers to enhance light convergence and block unwanted light paths, ensuring accurate light sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flat transparent panel is used to allow users to check objects directly, then transparency and ease of operation are improved, but light interference between light emitting and sensing elements causes deterioration of detection signal accuracy
Solution Approach 1:
The panel is divided into distinct functional regions: light emitting areas, light sensing areas, and light transmitting areas. This segmentation allows each region to perform its specific function while preventing light interference between adjacent regions, thus maintaining both transparency and detection accuracy.
Solution Approach 2:
Light shielding walls are introduced as intermediary structures between light emitting areas and light sensing areas. These walls block unwanted light paths and prevent direct light from the light emitting element from reaching the light sensing element, thereby eliminating the interference problem while preserving the transparent design.
2Illumination intensity
If light transmitting areas are included to maintain transparency, then user visibility is improved, but light from adjacent pixel areas can be delivered to light sensing elements through these areas, reducing detection precision
Solution Approach 1:
The harmful light transmission path is extracted and blocked by introducing light shielding walls. These walls are positioned to intercept light from adjacent pixel areas before it can reach the light sensing element through the light transmitting area, thus removing the interference while preserving the necessary light transmission for visibility.
Solution Approach 2:
The light transmitting area, which originally caused interference by allowing light from adjacent pixels to reach sensing elements, is combined with light shielding walls that redirect this light. The same area that enables visibility now works together with the shielding walls to block harmful light paths, converting a potential harm into a beneficial structure.
3Weight of moving object
If the scanning device is made portable and flat, then ease of carrying is improved, but the device becomes cumbersome requiring manual placement of objects for scanning
Solution Approach 1:
The flat panel structure serves multiple functions simultaneously: it acts as a transparent display surface, a light emitting surface, a light sensing surface, and a protective cover. This multi-functionality eliminates the need for separate components and manual object placement, making the portable device as easy to operate as a smartphone while maintaining the benefits of portability.
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 provides a portable, transparent scanning device with improved accuracy by converging reflected light onto the sensing elements while blocking unwanted light paths, maintaining transparency and enhancing detection signal precision.
Implementation Method 1
a micro lens disposed between the first support board and the light sensing element
Implementation Method 2
a first light shielding wall disposed between the first support board and the light sensing element and corresponding to an edge of the light sensing area
Implementation Method 3
a light emitting array disposed between the sensing array and a second support board and including a light emitting element corresponding to the light emitting area
Implementation Method 4
a sensing array disposed on a first support board and including a light sensing element corresponding to the light sensing area
Data Source
AI summary
A flat panel has a plurality of pixel areas each having a light emitting area, a light transmitting area, and a light sensing area in the light emitting area. The flat panel includes a first support board; a sensing array on the first support board and having a light sensing element corresponding to the light sensing area of each of the pixel areas; a micro lens between the first support board and the light sensing element; a first light shielding wall between the first support board and the light sensing element to correspond to an edge of the light sensing area of each of pixel areas; a light emitting array on the sensing array and having a light emitting element corresponding to the light emitting area of each of the pixel areas; and a second support board on the light emitting array facing the first support board.