World’s Top Level Capability To Detect Ultra Low Luminance Down to 0.0005 cd/m2

Konica Minolta high end spectroradiometer CS-2000A is a highly accurate spectroradiometer for any light sources in terms of spectral power distribution data, luminance, chromaticity, color temperature (CCT), dominant wavelength (DW), excitation purity (Pe) etc. 

CS-2000A spectroradiometer is built with technology that lowers sensor signal noise that produces highly accurate extremely low luminance measurements. Luminances with contracts ranges of 1,000,000:1 and ranges as low as 0.0005 cd/m2 are accurately measured with the instrument due to its 1° measurement angle. Throughout the measurement process, the instrument has the capacity to maintain less than 5nm half bandwidth.

The CS-2000A can be used for luminance and chromaticity measurement of various optical devices such as displays like LCDs, PDPs, organic ELs and FEDs, as well as light sources such as LEDs and lamps.

3 selectable measurement angle (0.1°, 0.2°, or 1°). The measuring angle can be adjusted according to the measurement target or application.


Optical devices such as display like LCDs | PDP | Organic LED | Organic EL | LED Billboard | Automotive (Instrument Panel & Switches) | Car Audio Panel | Light Sources such as LEDs and Lamps


CS-2000A Spectroradiometer

  • Highly accurate – ideal for ultra-low luminance levels, can measure as low as 0.0005 cd/m²
  • Scotopic vision – enabled to calculate highly accurate measurements corresponding to scotopic vision
  • Measurement angle switching function – can switch between 1°, 0.2°, 0.1°to suit any application
  • Easily measure small areas – areas as small as 0.1mm can be measured
  • Illuminance measurement – attaching a diffuser adapter for illuminance measurement enables it to be measured accurately

Spectroradiometer CS-2000A

ModelSpectroradiometer CS-2000A
Measurement angle0.1°, 0.2°, 1° selectable
Measurement wavelength range380 to 780nm
Wavelength resolution0.9nm / pixel
Display wavelength pitch1.0 nm
Median wavelength precision±0.3nm (at 435.8nm, 546.1nm, and 643.8nm)
Half bandwidth5nm or less

Luminance measurement range

(for Standard illuminant A)

0.1° measurement angle: 0.5 to 500,000 cd/m2

0.2° measurement angle: 0.175 to 125,000 cd/m2

1° measurement angle: 0.005 to 5,000 cd/m2



(1° measurement angle)

x,y: ±0.002 (0.001 to 0.05 cd/m2) x,y: ±0.0015 (from 0.05 cd/m2)


(1° measurement angle)

1.5% (0.0005 to 0.001 cd/m2)

0.7% (0.001 to 0.003 cd/m2)

0.25% (0.003 to 0.05 cd/m2)

0.15% (0.05 to 5,000 cd/m2)


(1° measurement angle)

x: 0.003 y: 0.0035 (0.001 to 0.003 cd/m2)

x: 0.001 y: 0.0015 (0.003 to 0.1 cd/m2)

x: 0.0006 y: 0.0006 (0.1 to 0.2 cd/m2)

x: 0.0004 y: 0.0004 (0.2 to 5,000 cd/m2)

Polarization error

0.1°, 0.2° measurement angle: 3% or less

1° measurement angle: 2% or less

Measurement timeApprox. 2 to 243 sec.
Colour space modeLv x y, Lv u’ v’, Lv TΔuv, XYZ ,spectral waveform, dominant wavelength, excitation purity scotopic luminosity (with CS-S10w Professional)
InterfaceUSB 1.1
Operating temperature/humidity range5 to 30°C; Relative humidity 80% or less with no condensation
Power supplyAC adapter (100 to 240V~, 50/60 Hz)
Dimensions (W × H × D)158 × 200 × 300mm (Main unit) Ø70 × 95mm (Lens)
Weight6.2kg (including lens)
  • Measurement conditions for accuracy/repeatability: Measurement subject: Standard Illuminant A; Ambient temperature: 23°C±2°C;
  • Relative humidity: 65% or less
  • Specifications and appearance subject to change without notice