Optical Pickup Radial Scanning for Biomaterial Substrate Analysis
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Solution Overview
Problem
Conventional analysis devices for biomaterials like antigens and antibodies require pre-recorded positional information on optical discs, complicating the manufacturing process and increasing costs due to the need for complex substrate preparation.
Innovation Solution
An analysis device and method that utilize a turntable with a substrate having reaction regions off-center, where an optical pickup moves perpendicular to the rotation axis to detect nanoparticles by generating positional and light reception signals, allowing for the specification of reaction regions without pre-recorded positional information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pre-recorded positional information is recorded on the substrate, then reaction regions can be accurately specified, but the manufacturing process becomes complicated and costs increase
Solution Approach 1:
The invention uses the reflected light pattern from the substrate surface as a natural copy or map of the reaction region positions. Instead of recording positional information separately, the optical pickup reads the physical topology of the substrate surface itself, which naturally encodes the reaction region locations through variations in light reflection. This eliminates the need for separate addressing mechanisms while maintaining precise location identification.
Solution Approach 2:
The substrate surface itself serves the dual function of both containing the reaction regions and providing positional information. The physical characteristics of the substrate surface (such as presence/absence of reflective layers, surface topology) automatically indicate reaction region positions without requiring external addressing systems. The system uses the substrate's own physical properties to identify positions, making the substrate self-describing.
2Measurement precision
If pre-recorded positional information is recorded on the substrate, then reaction regions can be accurately specified, but manufacturing costs increase
Solution Approach 1:
The reflected light pattern serves as a natural encoding of position information that can be read directly from the substrate's physical structure. This eliminates the need for expensive addressing mechanisms, address memory layers, or complex positioning marks, thereby reducing manufacturing costs while maintaining the ability to precisely identify reaction region locations through optical detection.
Solution Approach 2:
The substrate's physical surface characteristics automatically provide positional information without requiring additional manufacturing steps for adding addresses or position markers. By utilizing the substrate's inherent physical properties (reflectivity variations, surface topology), the system eliminates costly addressing infrastructure while maintaining precise position identification capability.
3Productivity
If the optical pickup moves in the radial direction to detect reaction regions, then all regions can be scanned, but the system requires complex addressing mechanisms
Solution Approach 1:
The system uses the reflected light pattern from the substrate as a natural map of reaction region positions. As the optical pickup scans radially across the substrate, it continuously reads the physical topology, which naturally indicates when the pickup is over a reaction region. This eliminates the need for separate addressing signals or position encoding mechanisms, simplifying the system while maintaining comprehensive scanning capability.
Solution Approach 2:
The substrate surface automatically provides continuous positional feedback through its physical characteristics during radial scanning. The presence or absence of reflective properties at different radial positions naturally indicates reaction region locations, eliminating the need for external addressing systems, position encoders, or control signals for region identification during the scanning process.
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 the accurate detection and analysis of biomaterials like antibodies and antigens by simplifying the substrate manufacturing process and reducing costs, as reaction regions can be specified without pre-recorded positional information, improving the analysis device's efficiency and cost-effectiveness.
Implementation Method 1
an optical pickup driven in a direction perpendicular to a rotation axis of the turntable, and configured to emit laser light to the respective reaction regions and receive reflected light from the respective reaction regions
Data Source
Figure 1(a)~1(c)
Figure 2~3
Figure 4~5
AI summary
An analysis device (1) includes a turntable (10) holding a substrate (60), an optical pickup (20) driven in a direction perpendicular to a rotation axis (C10) of the turntable (10) and configured to emit laser light (20a) to reaction regions (65) and to receive reflected light from the respective reaction regions (65), an optical pickup drive circuit (8), and a controller (9). The reaction regions (65) are formed at positions different from the center (Ca) of the substrate (60) . The center (Ca) of the substrate (60) is located on the rotation axis (C10) of the turntable (10). The optical pickup (20) detects a reception level of the reflected light to generate a light reception level signal (KS) . The controller (9) controls a turntable drive circuit (4) to rotate the substrate (60), controls the optical pickup drive circuit (8) to drive the optical pickup (20), and specifies the respective reaction regions (65) in accordance with a positional information signal (PS) and the light reception level signal (KS).