Introduction to Goniophotometry and the LSG-6000 System
Goniophotometers are critical instruments for measuring the spatial distribution of luminous intensity, color uniformity, and photometric performance of light sources. The LISUN LSG-6000 is a high-precision goniophotometer designed for compliance with CIE, IEC, EN, and ANSI/IESNA standards, ensuring accurate characterization of LED luminaires, OLED panels, and other advanced lighting technologies.
This article examines the LSG-6000’s pricing structure, technical specifications, testing methodologies, and industry-specific applications, providing an objective evaluation of its competitive advantages in sectors such as LED manufacturing, display testing, and urban lighting design.
LSG-6000 Goniophotometer: Core Specifications and Measurement Capabilities
The LSG-6000 features a dual-axis robotic arm system with a 0.1° angular resolution, enabling precise luminous intensity distribution (LID) measurements. Key specifications include:
| Parameter | Specification |
|---|---|
| Measurement Range | 0.1 cd to 2,000,000 cd |
| Angular Resolution | 0.1° (adjustable) |
| Spectral Range | 380 nm – 780 nm (extendable to 1700 nm) |
| Compliance Standards | CIE 70, IEC 60598, LM-79, EN 13032-1 |
| Light Source Types | LED, OLED, HID, fluorescent, incandescent |
| Data Output Formats | IES, LDT, EULUMDAT, CSV |
The system integrates a high-sensitivity spectrometer for spectral power distribution (SPD) and colorimetric analysis, ensuring compliance with ANSI C78.377 for white LED chromaticity and IEC 62471 for photobiological safety.
Pricing Determinants of the LSG-6000 Goniophotometer
The LSG-6000’s price is influenced by several factors:
- Measurement Accuracy and Repeatability – Higher precision components (e.g., robotic arm encoders, photometric sensors) increase cost but reduce measurement uncertainty.
- Automation Level – Automated sample positioning and data acquisition reduce labor costs in high-throughput environments.
- Customization Options – Additional modules (e.g., near-field goniometry, hyperspectral imaging) affect final pricing.
- Regulatory Compliance – Systems certified for LM-79 (DOE) or EN 13032-1 (EU) require rigorous calibration, impacting cost.
A typical LSG-6000 system ranges between $50,000 and $120,000, depending on configuration.
Testing Principles and Compliance with International Standards
The LSG-6000 operates on far-field goniophotometry, where a light source is rotated along C-γ or A-α planes to capture luminous intensity distribution. Key standards supported:
- IEC 60598-1 – Safety and performance of luminaires
- ANSI/IES LM-79-19 – Electrical and photometric testing of solid-state lighting
- CIE 121:1996 – Goniophotometry of luminaires
- ISO 19476:2016 – Photometric testing for automotive lighting
For medical lighting, the system verifies IEC 60601-2-41 compliance, ensuring uniform illumination in surgical environments.
Industry-Specific Applications of the LSG-6000
1. LED and OLED Manufacturing
The LSG-6000 ensures binning consistency in LED production by measuring MacAdam ellipses (SDCM ≤3) and angular color shift. OLED display manufacturers use it to validate viewing angle uniformity per VESA DisplayHDR standards.
2. Urban Lighting and Smart City Infrastructure
Municipalities rely on the LSG-6000 to optimize streetlight distribution (EN 13201) and minimize light pollution. The system’s IES file export enables simulation in DIALux and Relux.
3. Photovoltaic and Optical Component Testing
In solar panel testing, the goniophotometer measures anti-reflective coating efficiency by analyzing angular reflectance (ASTM E903).
4. Stage and Studio Lighting
Theater and film lighting must comply with ESTA E1.45 for beam consistency. The LSG-6000 quantifies beam spread, field uniformity, and flicker performance.
Competitive Advantages Over Alternative Goniophotometers
- Modular Design – Supports upgrades (e.g., IR/UV detectors) without full system replacement.
- Multi-Standard Compliance – Reduces the need for separate testing equipment.
- Automated Darkroom Calibration – Minimizes stray light interference, improving repeatability.
- Cloud-Based Data Analytics – Enables remote monitoring and collaborative research.
Frequently Asked Questions (FAQ)
Q1: What is the typical lead time for LSG-6000 delivery?
A: Standard configurations ship in 6–8 weeks, while customized systems may require 10–12 weeks.
Q2: Does the LSG-6000 support near-field goniophotometry?
A: Yes, with an optional near-field scanning module, it can measure luminance distribution at close range (<1 m).
Q3: Which photometric detectors are compatible?
A: The system supports V(λ)-corrected photodiodes, CCD arrays, and high-speed spectrometers.
Q4: How often should the LSG-6000 be recalibrated?
A: Annual recalibration is recommended, or per ISO/IEC 17025 accreditation requirements.
Q5: Can the LSG-6000 test laser-based lighting?
A: With a neutral density filter attachment, it can safely measure high-intensity laser diodes.
