Light & Display Measurement | Konica Minolta
CL-200A
The Konica Minolta CL-200A is a portable chroma meter designed for measuring the color and illuminance of light sources, particularly LEDs, fluorescent lamps, and other modern lighting technologies. The CL-200A chroma meter simultaneously measures chromaticity (x, y or u', v'), correlated color temperature (CCT in Kelvin), illuminance (lux), tristimulus values (XYZ), dominant wavelength, and excitation purity. With its lightweight, handheld design and dedicated receptor head connected by a cable, the CL-200A is ideal for lighting design verification, LED binning, display calibration, and workplace illuminance compliance testing. The CL-200A meets JIS C 1609-1:2006 AA-class and DIN 5032 Part 7 Class B requirements for illuminance measurement accuracy.
About the Konica Minolta CL-200A Chroma Meter (Illuminance)
The Konica Minolta CL-200A is a portable chroma meter designed for measuring the color and illuminance of light sources, particularly LEDs, fluorescent lamps, and other modern lighting technologies. The CL-200A chroma meter simultaneously measures chromaticity (x, y or u', v'), correlated color temperature (CCT in Kelvin), illuminance (lux), tristimulus values (XYZ), dominant wavelength, and excitation purity. With its lightweight, handheld design and dedicated receptor head connected by a cable, the CL-200A is ideal for lighting design verification, LED binning, display calibration, and workplace illuminance compliance testing. The CL-200A meets JIS C 1609-1:2006 AA-class and DIN 5032 Part 7 Class B requirements for illuminance measurement accuracy.
Features
- Illuminance and chromaticity measurement
- CIE 1931 color matching functions
- Compact sensor design
- Memory function
- USB connectivity
Specifications
| Measurement Quantities | Illuminance (lux), chromaticity (x,y / u',v'), CCT (K), XYZ, dominant wavelength, excitation purity |
|---|---|
| Sensor | Silicon photodiode × 3 with spectral response filters |
| Spectral Response | CIE 1931 color matching functions x̄, ȳ, z̄ |
| Illuminance Range | 0.1 to 99,990 lx |
| Accuracy (Illuminance) | ±2% ±1 digit (compared to standard illuminant A) |
| Accuracy (Chromaticity) | ±0.002 to ±0.005 (xy) depending on light source |
| Receptor | Separate receptor head with 1m cable (extendable to 10m) |
| Display | Backlit LCD (4-digit) |
| Data Memory | 100 measurements |
| Interface | USB, RS-232C |
| Power | 2× AA batteries or AC adapter |
| Operating Conditions | -10 to 40 °C, ≤85% RH |
| Dimensions (Body) | 68 × 162 × 29 mm |
| Weight | Approx. 200 g (with batteries, excl. receptor) |
| Standards | JIS C 1609-1:2006 AA, DIN 5032 Part 7 Class B |
Measurement Principle of the CL-200A Chroma Meter
The CL-200A receptor head contains three silicon photodiodes with specially designed spectral response filters that match the CIE 1931 standard color matching functions x̄(λ), ȳ(λ), and z̄(λ). When the receptor is pointed at a light source, the three sensors simultaneously output electrical signals proportional to the tristimulus values X, Y, and Z of the incident light. The instrument's processor converts these values to chromaticity coordinates (x, y or u', v'), correlated color temperature (CCT), dominant wavelength, excitation purity, and illuminance (lux).
The carefully characterized spectral response matching ensures accurate measurements even for narrow-band LED spectra, which pose challenges for instruments with poor filter matching. The CL-200A's calibration traceability to national standards ensures measurement reliability.
Applications of the CL-200A Chroma Meter
LED Lighting
LED binning verification, color consistency checks, luminaire QC, and specification compliance testing for LED products including LED bulbs, panels, strips, and streetlights.
Display and Screen Calibration
Color temperature and illuminance measurement for LCD, OLED, and projector displays in control rooms, broadcast studios, and medical imaging.
Workplace Lighting
Occupational health and safety compliance — verifying workplace illuminance meets standards (e.g., 300–500 lux for offices, 500+ lux for detailed work).
Architectural Lighting
Color temperature consistency verification across lighting installations in retail, hospitality, and public spaces.
Photography and Film
Set lighting color temperature matching for consistent color reproduction.
Q: Can the CL-200A measure LED lights accurately?
A: Yes, the CL-200A is specifically designed to handle the narrow spectral peaks of LEDs, providing accurate chromaticity and illuminance measurements for all LED types.
Q: What measurements does the CL-200A provide?
A: The CL-200A simultaneously measures chromaticity (x,y or u',v'), correlated color temperature (CCT), illuminance (lux), tristimulus values (XYZ), dominant wavelength, and excitation purity.
Q: What is the difference between CL-200A and CL-500A?
A: The CL-500A is a spectrometer-based illuminance spectrophotometer that provides full spectral data (360–780 nm), while the CL-200A is a tristimulus-based colorimeter. The CL-500A offers higher accuracy and spectral detail, while the CL-200A is more affordable and portable.
