- Fluorescent
- LCD Module
Luminance Colorimeter RD-80SA
A multifunctional instrument that accurately visualizes subtle light variations in displays and lighting systems.
It enables precise response-time measurements — a key factor in achieving smoother motion and higher image quality in LCD displays.
Outline
Designed for high-speed, high-accuracy optical evaluation, the RD-80SA Response-Time and Color Luminance Meter precisely captures even the smallest changes in light output from displays and lighting sources.
It measures luminance, chromaticity, color temperature, response characteristics, and flicker with exceptional accuracy — making it ideal for analyzing the temporal behavior of LCDs, LED backlights, and lighting systems.
With its high-sensitivity optical architecture, the RD-80SA can detect flicker components as small as 0.04 cd/m² in luminance difference.
It supports Gray-to-Gray response-time evaluation, enabling detection of overshoot and undershoot phenomena caused by overdrive circuits.
The instrument also supports luminance response evaluation based on human visual sensitivity, making it invaluable for R&D, quality assurance, and lighting control applications where accurate quantification of light behavior is essential.
Built on TechnoOptis’ decades of optical measurement expertise, the RD-80SA delivers proven reliability and precision for display evaluation and performance analysis.
Features
￭ High Sensitivity and Fast Response (≤ 80 µs)
Captures rapid temporal variations in light output with high resolution.
Accurately evaluates effects of PWM driving and backlight control.
Supports both physical response measurement and perception-based response evaluation.
￭ Micro Flicker Detection Capability
Detects minute flicker components as small as 0.04 cd/m².
Complies with JIS and PSE standards for LED lighting flicker evaluation.
￭ Simultaneous Luminance and Chromaticity Measurement
Measures luminance and chromaticity concurrently, functioning as a color luminance meter.
Provides rapid luminance measurements in approximately one second.
￭ Stable, High-Fidelity Measurement
Offers outstanding reproducibility and stability, even for low-level or fluctuating light sources.
￭ Comprehensive Connectivity
Equipped with RS-232C and LAN interfaces for seamless integration with automated systems.
Analog BNC output enables direct waveform observation via oscilloscope or multimeter.
￭ Precise Spot-Based Measurement
Allows accurate targeting of specific areas on displays — ideal for TVs, monitors, and gaming screens.
Principal use
￭ LCD Response-Time and Flicker Evaluation
Quantifies brightness variations due to drive waveforms or backlight modulation to assess motion performance and image quality.
￭ LED Lighting and Backlight Flicker Analysis
Evaluates luminance fluctuations caused by PWM control, improving visibility and user comfort.
￭ Panel and Module Optical Output Verification
Ensures uniformity and stability in production and inspection processes.
￭ Optical Measurement and Response Analysis in Research and Education
Enables detailed investigation of temporal light characteristics and emission behavior.
￭ Integration into Display Evaluation Systems
Combines flicker, response, and luminance measurement functions as a core sensor within automated inspection and test platforms.
Specifications
| Photo Detector | Photomultiplier tube |
|---|---|
| Optics | Objective Lens:f=80mm, F2.5 / Eyepiece lens:5°view field |
| Measurement angle | 2° |
| Measurement distance | 350mm – ∞ (Distance from metallic tip of objective lens) |
| Measurable range(*1) | 0.1 – 10,000 cd/m² |
| Accuracy in luminance(*2) | Within ±3% (2cd/m² or less)
Within ±2% (>2cd/m²) |
| Measurable range | 8 Range (Auto range or Manual range) |
| Accuracy in chromaticity(*2) | (1) ±0.0040 (2cd/m² or less), ±0.0025 (>2cd/m² ) (2) ±0.01 (O-55,Y-48,A-73B,IRA-05,T-44 ) (*3) ±0.03 (R-61,B-46,V-44,G-54 )(*3) |
| Repeatability in luminance(*4) | 2% (2cd/m² or less), 1% (>2cd/m² ) |
| Repeatability in chromaticity(*4) | 0.003 (0.5 cd/m²≦ luminance ≦2cd/m² ) 0.002 (2cd/m² or more) |
| Analogue output voltage(*5) | Approx. 0 – +3.4V |
| Measurement time(*6) | Approx. 1.0 sec |
| Analogue output response time(*7) | 80μs or less |
| Display | Dot-matrix 20caracters x 4rows with backlight |
| Interface | RS-232C, LAN |
| Calibration standard(*1) | TechnoOptis Calibration standard (23℃±3℃, 65%R.H. or less) |
| Power supply | Dedicated AC adapter AC100V-240V, 50/60Hz |
| Power consumption | Approx. 34W |
| Use conditions | Temperature: 0 – +35℃, Humidity: 65%RH or less (No condensation) |
| Outer dimensions (W×D×H) | 130×319×201mm |
| Weight | 4.3kg |
(*1) For standard illuminance A.
(*2) For standard illuminance A., Auto-Range.
(*3) For a combination of the standard source A and the colored glass.
(*4) Standard illuminant A, Auto range, SINGLE mode, 2σ.
(*5) It takes a oscilloscope to measure the response time and the cross-talk.
(*6) SINGLE mode,Y-filter, Range-4, Auto calibration OFF.
(*7) The response speed is the time required for the analog output of the instrument to reach 90% of the peak value when measuring an LED driven by a square wave from a function generator.
[Note]
This product is adjusted to provide 1,000mV at measurement range 5 for 200 cd/m² of standard illuminant A.
The upper limit of each measurement range is 3.4V.
Measurement Area
| Measurement distance [mm] | 350 | 500 | 1000 | 5000 | 10000 |
|---|---|---|---|---|---|
| Measurement distance [mmφ] | 10 | 15.4 | 32.8 | 169 | 341 |
(*) The measurement distance is the distance from the tip of the metal fixture on the instrument of the objective lens.
Measurement Range
| Range | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| Luminance (cd/m²) | 0.1-5 | 0.5-15 | 1.5-40 | 3.5-120 |
| Range | 5 | 6 | 7 | 8 |
|---|---|---|---|---|
| Luminance (cd/m²) | 15-600 | 35-1,600 | 220-2,900 | 750-10,000 |
(*) Above figure is design reference value, measurement range may change slightly according to the machining precision of the ND filter.
Adjustment function on body
1. Range adjustment → Adjustment over and under range voltage level.
￭ Upper range： Approx. 2.0 – 3.4V * Default 3.3V.
￭ Under range： Approx. 0.0 – 1.2V * Default 0.03V.
2. PMT sensitivity adjustment → Adjustable sensitivity of PMT.
￭ Adjustable range： Approx. 0.0 – 1.0V * Recommend： Approx. 0.3 – 0.5V.
Default setting ： 200cd/m² (for standard illuminant A ) Analog output 1.00V ± 0.05V.
3. Analog offset adjustment → Adjustable analog output offset.
￭ Adjustable： ±1.0V *Default： 0.05V (Dark).
Accessories
￭ Attachment Lens： AL-6
￭ Attachment Lens： AL-11
￭ Attachment Lens： AL-12
￭ Reference White Board： WS-3
￭ ITV adapter： IA-1A
￭ Fiber probe： FP-3P
￭ Mesh Filter： MF-10/MF-100
￭ Tripod 5N： Tripod5N