TechnoTeam RiGO 801-LED Near-Field Goniophotometer

Overview

The TechnoTeam RiGO 801-LED is a high-precision near-field goniophotometer engineered specifically for the optical characterization of LEDs, chip-scale packages, COB modules, and other compact solid-state light sources. Unlike conventional far-field photometers that rely on inverse-square law assumptions and distant measurements, the RiGO 801-LED employs a calibrated, motorized 3D goniometric stage to capture spatially resolved radiometric and photometric data at distances as close as 1–5 mm from the emission surface. This near-field acquisition enables direct measurement of ray origin, direction, intensity, and spectral composition—generating physically accurate ray sets suitable for optical simulation in tools such as LightTools, TracePro, and Zemax OpticStudio. Developed by TechnoTeam—a German company pioneering near-field photometry since 1991—the RiGO 801-LED reflects over two decades of iterative refinement in goniometric architecture, detector calibration traceability, and metrological robustness. Its design supports traceable photometric calibration per CIE S 025/E:2015 and aligns with the geometric and data format requirements specified in Zhaga Book 18 for LED module interoperability.

Key Features

• Sub-millimeter positional resolution (±0.01 mm) across X-Y-Z axes, enabling precise alignment with sub-100 µm LED dies and micro-optic arrays
• Automated 3-axis goniometric scanning with programmable angular increments (0.05°–1.0°) and configurable field-of-view limits
• Integrated spectroradiometer option (380–780 nm, FWHM ≤ 4 nm) for wavelength-resolved near-field ray data generation
• Dual-mode operation: high-speed ray-set acquisition (≤60 min for full 3D dataset) and high-resolution surface luminance/chromaticity mapping (optional)
• Thermally stabilized silicon photodiode detector with NIST-traceable calibration certificate included
• Modular upgrade path for spatial chromaticity uniformity analysis (CIE 1931 xy or u’v’ coordinates per pixel) and spectral power distribution (SPD) per measured ray

Sample Compatibility & Compliance

The RiGO 801-LED accommodates light-emitting devices ranging from 0.2 mm micro-LED chips to 200 mm multi-die COB modules, with customizable sample holders and thermal management interfaces (e.g., Peltier-cooled stages). It meets the mechanical, optical, and data-format specifications defined in Zhaga Book 18 for near-field characterization of interchangeable LED modules. All photometric outputs—including total luminous flux (lm), luminous efficacy (lm/W), polar intensity distributions (candela plots), and near-field ray files—are compliant with CIE 127:2007 (Measurement of LEDs) and ISO/CIE 19476:2014 (Photometry of LED modules). The system supports audit-ready documentation for GLP and ISO/IEC 17025-accredited laboratories, including full calibration history, uncertainty budgets, and instrument configuration logs.

Software & Data Management

Control and analysis are performed via TechnoTeam’s proprietary RIGOSOFT v5.2 platform, a Windows-based application supporting both automated test sequences and interactive parameter tuning. The software exports standardized ray data formats (.ray, .rad, .dat) compatible with industry-standard optical design software without post-processing. All measurement sessions include embedded metadata (timestamp, operator ID, ambient conditions, calibration ID), and optional 21 CFR Part 11 compliance mode enables electronic signatures, audit trails, and role-based access control. Raw spectral and photometric datasets are stored in HDF5 format for long-term archival integrity and batch processing scalability.

Applications

• LED package validation prior to mold tooling—reducing physical prototyping iterations by up to 70% through simulation-driven design verification
• Optical modeling support for secondary optics (TIR lenses, reflectors, diffusers) requiring accurate near-field boundary conditions
• Quality assurance of color mixing uniformity in multi-channel RGB/W horticultural or architectural modules
• Development of digital twin models for smart lighting systems under IEC 62722-2-1 and ENERGY STAR Lamps V2.1 requirements
• Research into near-field thermal–optical coupling effects in high-power micro-LED arrays

FAQ

What distinguishes near-field goniophotometry from traditional far-field photometry?
Near-field measurement captures directional radiance and spectral data at distances comparable to source dimensions, preserving spatial coherence and eliminating assumptions inherent in far-field extrapolation. This yields simulation-grade ray data—not just integrated metrics.
Is the RiGO 801-LED compatible with third-party optical design software?
Yes—exported ray files conform to standard ASCII and binary formats accepted natively by LightTools, ASAP, FRED, Zemax OpticStudio, and TracePro.
Can the system be used for regulatory compliance testing?
It supports test protocols required by Zhaga, ENERGY STAR, DLC, and IEC 62717 for LED modules; however, final certification requires testing in an ISO/IEC 17025-accredited laboratory using validated procedures.
What maintenance and recalibration intervals are recommended?
Annual NIST-traceable photometric recalibration is advised; detector linearity verification and stage positional accuracy checks should be performed quarterly using certified reference artifacts.