Detection Device with Segmented Light Control for Clearer Imaging
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Solution Overview
Problem
Existing detection devices suffer from reduced accuracy due to blurred images caused by multiple point light sources irradiating objects from different directions, which complicates the detection of objects such as microorganisms.
Innovation Solution
A detection device design featuring a light source device with light-emitting elements separated by a light-shielding wall, a liquid crystal shutter with divided regions that can switch between light-transmitting and non-light-transmitting states, and an optical sensor with detection regions, allowing precise control of light emission and reception to enhance image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple point light sources are provided to illuminate objects from different directions, then illumination coverage is improved, but image clarity deteriorates due to light rays blurring the image
Solution Approach 1:
The light source device is divided into multiple independent light-emitting elements, each capable of being controlled separately. The liquid crystal shutter is segmented into multiple divided regions that can be independently switched between light-transmitting and non-light-transmitting states. This segmentation allows precise control of light paths to maintain image clarity while providing comprehensive illumination.
Solution Approach 2:
The liquid crystal shutter introduces dynamic control capability, allowing the divided regions to switch between light-transmitting and non-light-transmitting states in real-time. This dynamic adjustment enables the system to adapt light transmission patterns, preventing light from reaching detection regions where it would cause blurring, while maintaining illumination where needed.
2Adaptability or versatility
If multiple light-emitting elements are arranged in a plane to provide comprehensive illumination, then detection coverage is improved, but light interference between adjacent elements increases
Solution Approach 1:
The liquid crystal shutter acts as an intermediary component between the light-emitting elements and the detection regions. It mediates the light transmission by selectively blocking light paths, preventing interference from adjacent light-emitting elements from reaching detection regions, while still allowing comprehensive illumination coverage through coordinated control of multiple divided regions.
Solution Approach 2:
Different divided regions of the liquid crystal shutter are controlled to have different light transmission properties based on local requirements. Regions corresponding to light-emitting elements are set to non-light-transmitting state to prevent interference, while other regions maintain light transmission to preserve illumination coverage. This local differentiation resolves the conflict between coverage and interference.
3Manufacturing precision
If a liquid crystal shutter with multiple divided regions is used to control light transmission, then light path precision is improved, but device complexity increases
Solution Approach 1:
The liquid crystal shutter integrates multiple divided regions into a single unified component that can be controlled collectively or individually. This merging approach achieves precise light path control through coordinated control of multiple regions while avoiding the need for separate complex control mechanisms for each region, thus managing device complexity.
Solution Approach 2:
The liquid crystal shutter serves multiple functions simultaneously: it acts as a light transmission controller, an interference blocker, and a precision positioning device. By making this single component multi-functional, the system achieves high light path precision without proportionally increasing device complexity, as one component performs multiple critical roles.
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 improves detection accuracy by minimizing light interference between adjacent light-emitting elements, resulting in clearer images and enhanced object detection capabilities.
Implementation Method 1
a liquid crystal 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; and an optical sensor that is disposed overlapping the liquid crystal shutter on the first side in the first direction
Implementation Method 2
light emitted from the point light source passes through the culture medium and the objects to be detected (microorganisms), and enters the photodiode
Implementation Method 3
an optical sensor including a photosensor (photodetection element)... 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 on which an object to be detected is placed; a liquid crystal shutter having divided regions; and an optical sensor having detection regions arranged in a plane. One of the detection regions includes one or more photodetection elements. The light source device includes a light-shielding wall disposed between two adjacent light-emitting elements out of the light-emitting elements. The divided regions in the liquid crystal shutter are each 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 for each of the light-emitting elements. The respective light-emitting elements, the respective divided regions of the liquid crystal shutter, and the respective detection regions overlap when viewed in the first direction.