Majantys Probe4Light Miniature Spectroradiometer

Overview

The Majantys Probe4Light Miniature Spectroradiometer is a compact, high-fidelity optical measurement instrument engineered for precise spectroradiometric and colorimetric characterization across laboratory, R&D, and industrial quality control environments. Developed by Majantys — a specialist brand under the Pleiades Group with over three decades of heritage in photometric and colorimetric instrumentation design — the Probe4Light implements a calibrated CCD-based grating spectrometer architecture optimized for spectral irradiance (W/m²·nm), spectral radiance (W/sr·m²·nm), illuminance (lx), luminance (cd/m²), chromaticity coordinates (CIE 1931 x,y; u’v’), correlated color temperature (CCT), and color rendering index (CRI/Ra) calculations. Its core optical path features thermally stabilized diffraction grating optics and factory-traceable NIST-compatible calibration, ensuring metrological consistency across repeated measurements. Designed for integration into automated test benches or handheld deployment, the Probe4Light operates within the 380–780 nm visible spectral range with typical optical resolution ≤ 2.5 nm FWHM and wavelength repeatability < ±0.1 nm — meeting foundational requirements for ISO/CIE-compliant photometric validation.

Key Features

• Compact form factor (120 × 60 × 45 mm) enabling integration into confined spaces, inline production monitoring stations, or portable field use
• Thermally compensated optical bench minimizing drift during extended acquisition sequences
• USB 2.0 interface with vendor-provided SDK supporting LabVIEW, Python, MATLAB, and C/C++ for custom automation and OEM integration
• Real-time spectral acquisition at up to 10 Hz frame rate (full spectrum), configurable exposure time from 1 ms to 10 s
• Internal memory buffer for standalone operation without host PC connection
• Integrated ambient light compensation algorithm for stable readings under variable environmental illumination
• Compliance with CIE S 026/E:2015, ISO/CIE 11664-1:2019 (colorimetry), and ISO/CIE 13406-2:2001 (display viewing conditions)

Sample Compatibility & Compliance

The Probe4Light supports diverse sample geometries and emission types via interchangeable optical interfaces: a 50-mm miniature integrating sphere for total luminous flux (lm) and spectral power distribution (SPD) of LEDs and small-area light sources; a cosine-corrected illuminance probe for spatially averaged illuminance mapping on surfaces or workplanes; and a fiber-coupled radiance probe (2° or 1° field-of-view options) for non-contact brightness and spectral radiance measurement of displays, automotive lighting, coated materials, and textured surfaces. All accessories feature traceable calibration certificates issued per ISO/IEC 17025-accredited procedures. The system conforms to GLP documentation standards and supports audit-ready data export (CSV, XML, CIE 15:2018-compliant .cie files), facilitating compliance with ISO 9001 quality management systems and internal QC protocols in regulated sectors including automotive lighting validation (SAE J1383), packaging print verification (ISO 12647-2), and textile color matching (AATCC Evaluation Procedure 1).

Software & Data Management

The Probe4Light is operated through SpectraView Pro — a Windows-based application offering real-time spectral visualization, multi-parameter dashboarding (CCT, Duv, CRI, TM-30 metrics), batch report generation, and pass/fail thresholding against user-defined specification limits. Raw spectral data are stored with full metadata (timestamp, operator ID, calibration ID, environmental conditions). Software supports FDA 21 CFR Part 11-compliant electronic signatures, role-based access control, and immutable audit trails for all configuration changes and measurement exports. Export formats include ANSI-standard .spc, IES LM-63, and CIE 15:2018-compliant spectral data files compatible with third-party lighting simulation tools (e.g., Dialux, AGi32). An optional API module enables direct integration into MES or LIMS platforms via RESTful endpoints or OPC UA.

Applications

• LED and OLED manufacturing: binning, CCT shift monitoring, and aging studies
• Automotive interior/exterior lighting: compliance verification against ECE R149 and SAE J575
• Printing and packaging: spectral match validation of Pantone® and ISO Coated v2 substrates
• Textile and plastics: metamerism assessment and batch-to-batch color consistency under multiple illuminants
• Medical device UIs: luminance uniformity and chromaticity stability testing per IEC 62366-1
• Academic photobiology: action spectrum-weighted irradiance calculation for UV/blue-light hazard analysis

FAQ

What spectral range and resolution does the Probe4Light support?
The instrument covers 380–780 nm with optical resolution ≤ 2.5 nm FWHM and wavelength accuracy ±0.3 nm (calibrated at Hg/Ne emission lines).
Is factory recalibration required, and how often?
Annual recalibration is recommended for ISO/IEC 17025 traceability; users may perform in-house verification using supplied reference LEDs and NIST-traceable white tile.
Can the Probe4Light operate in continuous monitoring mode?
Yes — it supports triggered or free-running acquisition modes with configurable dwell time and automatic data logging to internal storage or network drive.
Does the software support multi-instrument synchronization?
SpectraView Pro allows time-synchronized acquisition across up to four Probe4Light units via hardware trigger input/output ports.
Are spectral data export formats compliant with industry standards?
Yes — outputs include CIE 15:2018 .cie, IES LM-63, and ANSI ASC X3.5-1977 .spc formats, fully interoperable with major photometric analysis and lighting design software suites.