Electrochromic Shutter Detection Through Low-Transmittance Culture Media
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Solution Overview
Problem
Existing detection devices face challenges in accurately detecting objects through culture media with low light transmittance, such as in biosensors with microorganisms, due to reduced light penetration.
Innovation Solution
A detection device comprising a light source device with multiple light-emitting elements, an object placement member with a light-transmitting property, an electrochromic shutter with divided regions, and an optical sensor with detection regions, allowing for controlled light transmission and detection through the use of an electrochromic shutter to enhance detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a point light source is used in a biosensor, then the device structure is simple, but detection accuracy deteriorates when the culture medium has low light transmittance
Solution Approach 1:
The light source is divided into multiple light-emitting elements arranged in a plane, and the shutter is divided into multiple divided regions corresponding to each light-emitting element. This segmentation allows selective activation of specific light paths through the culture medium, improving detection accuracy even with low light transmittance by focusing light on specific areas rather than using a single point source.
Solution Approach 2:
The electrochromic shutter dynamically changes the light transmission state of each divided region independently in response to control signals. This dynamic control allows the system to adapt light paths in real-time, enabling precise imaging through culture media with varying light transmittance properties by selectively opening or closing specific regions.
2Ease of operation
If light passes through culture medium with low light transmittance, then the detection can be performed, but the detection accuracy deteriorates
Solution Approach 1:
Different divided regions of the shutter have different light transmission states (transmissive or non-transmissive) controlled independently. This local quality control allows optimization of light paths through specific regions of the culture medium, improving detection accuracy by selecting paths with better light transmittance characteristics while maintaining detection capability.
Solution Approach 2:
The electrochromic shutter changes the light transmission parameter of each divided region by applying control signals that alter the electrochromic material's properties. This parameter change enables dynamic adjustment of light paths to compensate for low light transmittance in the culture medium, improving detection accuracy while preserving detection capability.
3Measurement precision
If multiple light-emitting elements and divided regions are used, then detection accuracy improves, but device complexity increases
Solution Approach 1:
The electrochromic shutter serves multiple functions: it acts as a light modulator, a spatial selector, and a control element for different light-emitting elements simultaneously. Each divided region can be independently controlled to work with corresponding light-emitting elements, providing multi-functionality that improves detection accuracy without proportionally increasing overall device complexity.
Solution Approach 2:
The electrochromic shutter acts as an intermediary between the light-emitting elements and the optical sensor. It mediates the light paths by selectively transmitting or blocking light from specific elements to specific detection regions, enabling complex detection patterns while maintaining a relatively simple overall structure through this intermediate control layer.
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 device improves detection accuracy by enabling precise imaging and monitoring of objects through culture media with low light transmittance by controlling light transmission and reception, enhancing the ability to distinguish between regions with and without objects.
Implementation Method 1
an electrochromic shutter that is disposed overlapping the object placement member on the first side in the first direction and has a plurality of divided regions arranged in a plane... The divided regions in the electrochromic shutter are capable of being switched between a light-transmitting state and a non-light-transmitting state for each of the divided regions
Implementation Method 2
an optical sensor that is disposed overlapping the electrochromic shutter on the first side in the first direction and has a plurality of detection regions arranged in a plane. One of the detection regions includes one or more photodetection elements
Data Source
AI summary
According to an aspect, a detection device includes: a light source device; an object placement member; an electrochromic shutter having a plurality of divided regions arranged in a plane; and an optical sensor having a plurality of detection regions arranged in a plane. One of the detection regions includes one or more photodetection elements. The divided regions in the electrochromic shutter are capable of being switched between a light-transmitting state and a non-light-transmitting state for each of the divided regions, and the light-emitting elements are each capable of being switched between a lit state and an unlit state. The respective light-emitting elements, the respective divided regions of the electrochromic shutter, and the respective detection regions overlap when viewed in the first direction.