Overview
IEC 60747-18-1:2019 is an international standard established by the International Electrotechnical Commission (IEC) that specifies the test methods and data analysis required for the calibration of lens-free CMOS photonic array sensors. These semiconductor devices are widely used as bio sensors in medical diagnostics, healthcare applications, lens-free microscopes, and advanced patchable or implantable medical devices.
This standard provides comprehensive procedures for the effective calibration of lens-free CMOS photonic array sensors, covering everything from measurement setups, sensor configurations, and environmental factors to the statistical analysis of test data. It further details methods for achieving planarization and linearity in sensor outputs, ensuring the reliability and accuracy necessary for the demanding fields of bio diagnostics and sensor technology.
Key Topics
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Measurement Setup
- Describes necessary input and environmental conditions, such as light intensity, wavelength, incident angle, and temperature.
- Specifies requirements for dark boxes to eliminate stray light and standardizes light sources for consistent testing.
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Configuration of Lens-free CMOS Photonic Array Sensors
- Outlines specification of sensor board properties, including temperature, gains (analogue and digital), frame rate, and clock settings.
- Details integration time, absorption and anti-reflection coatings, and parameters for test repeatability.
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Test Conditions and Procedures
- Documents multiple measurement trials under uniform and varying light conditions.
- Covers data acquisition for both illuminated and dark frames to assess sensor responsivity and noise.
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Statistical Data Analysis
- Introduces the use of box plots and statistical metrics (mean, median, mode, RMS noise) for assessing pixel array uniformity and detecting non-linearity.
- Explains how to identify reference pixels and interpret signal distribution to screen for sensor faults (e.g., dead pixels, excessive noise).
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Calibration for Planarization and Linearity
- Provides methods to calibrate pixel response, ensuring even output across the sensor array when exposed to identical light.
- Offers guidance on establishing lookup tables to translate raw sensor data into meaningful, calibrated output.
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Test Reports
- Specifies the required documentation for test environments, sensor specifications, calibration lookup tables, and data summary for quality assurance and traceability.
Applications
The systematic calibration approach prescribed by IEC 60747-18-1:2019 enables manufacturers, researchers, and quality engineers to:
- Ensure Consistent Performance in Bio Sensors:
Achieve reliable measurement results in medical diagnostics and point-of-care testing through standardized sensor calibration.
- Support Product Development for Medical Devices:
Facilitate the integration of lens-free CMOS photonic array sensors in wearable, patchable, or implantable medical technologies.
- Enhance Quality Control:
Use repeatable, statistically sound test methods to minimize defects and validate sensor uniformity across production batches.
- Research and Innovation:
Provide a benchmark for academic and industrial research seeking to improve or compare CMOS photonic sensor technology.
Related Standards
- IEC 60747 Series – General standards on semiconductor devices, offering frameworks for device performance and reliability.
- IEC 60747-18-2 (in preparation) – Focuses on evaluation processes for the package modules of lens-free CMOS photonic array sensors.
- IEC 60747-18-3 (in preparation) – Addresses fluid flow characteristics within sensor package modules equipped with fluidic systems.
- IEC Electropedia & ISO Online Browsing Platform – Reference sources for electrotechnical definitions and terminologies used within the standard.
IEC 60747-18-1:2019 plays a critical role in enhancing the reliability and accuracy of semiconductor bio sensors, particularly those utilizing lens-free CMOS photonic array technology, by standardizing calibration methods for industry-wide consistency.
Open preview (PDF)Semiconductor devices - Part 18-1: Semiconductor bio sensors - Test method and data analysis for calibration of lens-free CMOS photonic array sensors
