Konica Minolta ProMetric® Imaging Colorimeter and Photometer

Overview

The Konica Minolta ProMetric® Imaging Colorimeter and Photometer is a scientific-grade optical measurement instrument engineered for high-accuracy spatial photometry and colorimetry across R&D, quality assurance, and automated production environments. Based on cooled, 12-bit interline-transfer CCD sensor architecture with CIE-standard spectral responsivity, the ProMetric platform captures full-field luminance (cd/m²) and chromaticity (CIE x,y or u’v’) data in a single acquisition—enabling pixel-level analysis of emissive and reflective surfaces. Its core measurement principle leverages calibrated radiometric imaging combined with CIE 1931 V(λ) luminous efficiency function and CIE 1931/1964 tristimulus color matching functions to ensure metrological traceability to international photometric standards. The system is widely deployed in flat-panel display (FPD) characterization, automotive human-machine interface (HMI) validation, LED lighting design verification, and medical display compliance testing—where objective, spatially resolved quantification of brightness uniformity, chromaticity deviation, contrast ratio, and visual defect detection (e.g., mura, hotspots, leakage) is required.

Key Features

• Modular sensor architecture supporting four resolution tiers: 2 MP (1600 × 1200), 8 MP (3296 × 2472), 16 MP (4896 × 3264), and 29 MP (6576 × 4384), enabling scalability from lab-based prototyping to high-throughput inline inspection.
• Thermoelectrically stabilized CCD sensor with <±0.1°C temperature control, minimizing dark current drift and ensuring measurement stability over extended acquisition sequences.
• Multi-exposure high-dynamic-range (HDR) imaging mode—automatically sequencing up to 16 exposures per frame—to resolve luminance ranges exceeding 1,000,000:1 without saturation or noise floor compromise.
• CIE-matched optical filter set including precision V(λ) luminance filters and XYZ tristimulus filters, validated against NIST-traceable reference standards; supplemented by motorized neutral density (ND) wheel for precise exposure control.
• Flexible optical interface via standard C-mount lens mount, compatible with telecentric, wide-angle, macro, and zoom optics—allowing field-of-view adaptation from sub-millimeter micro-displays to full-vehicle interior lighting scenes.
• Fully programmable acquisition engine supporting trigger-synchronized capture, ROI-based partial-frame readout, and real-time histogram feedback for adaptive exposure optimization.

Sample Compatibility & Compliance

The ProMetric system is validated for quantitative assessment of emissive sources including LCD, OLED, microLED, and Mini-LED displays; automotive lighting modules (tail lamps, DRLs, ambient lighting, headlamp beam patterns); backlit keypads and membrane switches; medical-grade diagnostic monitors (per DICOM GSDF and IEC 62563-1); and aerospace cockpit displays (compliant with DO-160 Section 21 photometric requirements). All photometric and colorimetric calculations adhere to CIE Publication No. 15:2018, ISO/CIE 11664 series, and ASTM E308–22 methodologies. When deployed with ProMetric’s audit-mode logging and user-access controls, the system supports 21 CFR Part 11–aligned workflows—including electronic signatures, immutable measurement records, and full change history—for regulated industries requiring GLP or GMP documentation.

Software & Data Management

ProMetric Control & Analysis software provides a unified environment for instrument configuration, image acquisition, real-time visualization, and post-processing analytics. It includes native support for ISO-defined uniformity metrics (e.g., max/min, RMS, Δu’v’), contrast ratio calculation, and defect classification using configurable thresholds. Optional modules extend functionality: TrueTest™ enables standardized FPD evaluation per VESA DisplayHDR and ISO 9241-307; TrueMura™ applies spatial frequency filtering and gradient-based segmentation for mura quantification; PM-KB performs automated keyboard character extraction, OCR-assisted keycap placement verification, and per-key luminance/chromacity statistical reporting. All measurement data export to CSV, HDF5, or XML formats—with metadata embedding for full traceability—and integrate seamlessly into MES, SPC, and LIMS platforms via RESTful API or OPC UA.

Applications

• Automotive HMI Validation: Pixel-level uniformity mapping of instrument clusters, center displays, and HUDs; quantification of luminance gradients, chromaticity shift across viewing angles, and perceptual defect scoring (e.g., yellow mura, edge leakage) aligned with UNECE R118 and OEM-specific visual acceptance criteria.
• Lighting System Characterization: Photometric analysis of headlamp beam patterns on test walls or road surfaces; luminance distribution profiling of interior ambient lighting zones; and relative intensity mapping of LED arrays for thermal derating correlation.
• Display Manufacturing QA: In-line mura detection on TFT-LCD and AMOLED panels; luminance and chromaticity binning for yield optimization; and Mura severity grading per JIS Z 8722 and JEITA ED-2521A standards.
• Medical & Aerospace Displays: Verification of DICOM grayscale standard display function (GSDF) compliance; evaluation of minimum luminance contrast for critical status indicators; and verification of angular luminance stability per IEC 62366-1 usability engineering requirements.
• Consumer Electronics Backlight Inspection: Automated pass/fail assessment of keyboard backlight uniformity, character legibility under low-light conditions, and RGB balance consistency across multi-zone LED backlights.

FAQ

What calibration standards does the ProMetric system support?
The ProMetric platform accepts factory calibration using NIST-traceable luminance and chromaticity standards. Users may perform field recalibration using Konica Minolta’s CS-2000 reference spectroradiometer or third-party transfer standards compliant with CIE TC 2-48 protocols.
Can ProMetric measure angular dependence of luminance and color?
Yes—when integrated with motorized goniometric stages (e.g., Gen3 or LSG-2000), the system acquires multi-angle luminance and chromaticity datasets for BSDF modeling, viewing cone analysis, and glare assessment per ISO/CIE 19005.
Is the software compatible with Windows 11 and 64-bit architectures?
ProMetric Control & Analysis v5.5+ is certified for Windows 10/11 (64-bit) and supports GPU-accelerated image processing on NVIDIA CUDA-enabled workstations.
How is measurement uncertainty quantified for ProMetric systems?
Uncertainty budgets are provided in the Certificate of Calibration and follow JCGM 100:2008 (GUM) methodology—covering contributions from sensor non-uniformity, filter spectral mismatch, temperature drift, lens vignetting, and reference standard uncertainty.
Does the system support real-time pass/fail decision logic for automated production lines?
Yes—via ProMetric’s embedded script engine and digital I/O interface, users define conditional logic based on statistical limits, region-of-interest metrics, or defect pixel counts, triggering hardware outputs (e.g., PLC signals, reject gates) without host PC intervention.