CS-2000 Spectroradiometer

Click to Enlarge Thumbnails

Click Here to Watch Video

CS-2000 Spectroradiometer

The CS-2000 is a polychromator type spectroradiometer which can measure contrasts of 100,000:1 and features the world’s top level capability to detect extremely low luminance levels of 0.003 cd/m2.

The optical design and signal processing technologies of this instrument also provide accurate measurements of low to extremely low luminance and chromaticity measurements. Measurements are calculated in as little as 5 seconds, which eliminates mechanical and electrical noise factors.

The CS-2000 has a low polarization error of 2% which ensures more stable measurements of displays that use polarization, including LCDs. The selectable measuring angle feature enables the user to select the optimum angle of 1°, .2°, or .1° based on the application. With a temperature range from 5° to 35°C, this instrument is reliable in any work environment.

Measurements can be taken after a warm-up time of only 30 seconds. The CS-2000 has three measurement settings, internal and external synchronization, and multi-integration mode. Synchronization can be done either internally with user inputs or externally via line input. Multi-integration mode reduces variations due to unsynchronized measurement or synchronized measurements of sources that have irregular light emission cycles.

The CS-2000 features a color LCD screen and simple operation panel, easy for first time users.

Click Here to View CS-2000 & CS-2000A Spectroradiometers Video

Existing Customer?

If you're looking for service support or help with calibration then complete a service request form and we'll get right back to you


  • Eligible ISO 17025 Certification
  • Detects extremely low luminance – as low as 0.003 cd/m²
  • Easy operation with a color LCD screen
  • Measuring angle switching function
  • Low polarization error – Ideal for LCDs
  • Quick measurements
  • 3 measurement settings: internal synchronization, external synchronization and multi-integration mode


Model CS-2000
Wavelength range 380 to 780 nm
Wavelength resolution 0.9 nm/pixel
Display wavelength bandwidth 1.0 nm
Wavelength precision +-0.3 nm (Median wavelength: 435.8 nm, 546.1 nm, 643.8 nm; Hg-Cd lamp)
Spectral bandwitdh 5 nm or less (half bandwidth)
Measuring angle (selectable)
0.2° 0.1°
Measurement luminance range (Standard light source A)
0.003 to 5,000 cd/m² 0.075 to 125,000 cd/m² 0.3 to 500,000 cd/m²
Minimum measuring area
Φ5 mm ( Φ1 mm when using close-up lens) Φ1 mm ( Φ0.2 mm when using close-up lens) Φ0.5 mm ( Φ0.1 mm when using close-up lens)
Minimum measuring distance 350 mm (55 mm when using close-up lens)
Minimum spectral radiance display 1.0×10(-9) Ws/r, m(2), nm
Accuracy: Luminance *1(Standard light source A) +-2%
Accuracy: Chromaticity *1(Standard light source A)
x,y :+-0.003 (0.003 to 0.005 cd/m²)
x,y :+-0.002 (0.005 to 0.05 cd/m²)
x :+-0.0015 (0.05 cd/m²)
y :+-0.001
x,y :+-0.003 (0.075 to 0.125 cd/m²)
x,y :+-0.002 (0.125 to 1.25 cd/m²)
x :+-0.0015 (1.25 cd/m²)
y :+-0.001
x,y :+-0.003 (0.3 to 0.5 cd/m²)
x,y :+-0.002 (0.5 to 5 cd/m²)
x :+-0.0015 (5 cd/m²)
y :+-0.001
Repeatability: Luminance(2σ)(Standard light source A) *2
0.4 % (0.003 to 0.05 cd/m²)
0.3 % (0.05 to 0.1 cd/m²)
0.15 % (0.1 to 5,000 cd/m²)
0.4 % (0.075 to 1.25 cd/m²)
0.3 % (1.25 to 2.5 cd/m²)
0.15 % (2.5 to 125,000 cd/m²)
0.4 % (0.3 to 5cd/m²)
0.3 % (5 to 10cd/m²)
0.15 % (10 to 500,000cd/m²)
Repeatability: Chromaticity(2σ)(Standard light source A) before *2
0.002 (0.003 to 0.005 cd/m²)
0.001 (0.005 to 0.1 cd/m²)
0.0006 (0.1 to 0.2 cd/m²)
0.0004 (0.2 to 5,000 cd/m²)
0.002 (0.075 to 0.125 cd/m²)
0.001 (0.125 to 2.5 cd/m²)
0.0006 (2.5 to 5 cd/m²)
0.0004 (5 to 125,000 cd/m²)
0.002 (0.3 to 0.5 cd/m²)
0.001 (0.5 to 10 cd/m²)
0.0006 (10 to 20 cd/m²)
0.0004 (20 to 500,000 cd/m²)
Polarization error 1°: 2 % or less(400 to 780 nm) 0.1° and 0.2°: 3 % or less(400 to 780 nm)
Integration time Fast: 0.005 to 16 sec.; Normal: 0.005 to 120 sec.
Measurement time 2 secs. minimum (Manual mode) to 243 sec. maximum (Normal mode)
Color space mode Lv x y, Lv u’; v’;, Lv T Δuv, XYZ, spectral graph, dominant wavelength, excitation purity, scotopic luminosity (with CS-S10w Professional)
Interface USB 1.1
Operating temperature/ humidity range 5 to 35°C, relative humidity 80% or less with no condensation
Storage temperature /humidity range 0 to 35°C, relative humidity 80% or less with no condensation
Power AC adapter (100 to 240V~,50/60 Hz)
Current consumption Approx. 20 W
Size 158 (W) x 262 (H) x 392 (D) mm (Main Unite), ø70 x 95 mm (lens)
Weight 6.2 kg
*1 Average of 10 measurements in NOrmal mode at temperature of 23+- 2°C and a relative humidity of 65% or less
*2 10 measurements in NOrmal mode at a temperature of 23 +-2°C and a relative humidity of 65% or less

Included Accessories

AC Adapter
Buy Now

AC Adapter Package
Buy Now

CS-S10W Software Prof. Vers. (USB) 1.6
Buy Now

USB Cable – CS-A32
Buy Now

Suggested Accessories

CS-A1 ND Eyepiece Filter
Buy Now

CS-A30 Storage Case
Buy Now

CS-A33 ND Filter (1/10)
Buy Now

CS-A33 ND Filter (1/10) w/Calibration Certificate
Buy Now

CS-A34 ND Filter (1/100) w/ Calibration Certificate
Buy Now

CS-A35 Close-up Lens
Buy Now

CS-A35 Close-up Lens W/Calibration Certificate
Buy Now


CS-A36 Adapter for CCD Camera
Buy Now


CaseCruzer (PELICAN) PN: CR2217-11
Buy Now


Custom CS-2000 Focus Lock Ring
Buy Now


Custom Illuminance Adapter for CS-2000
Buy Now

Lens Cap CS-A31
Buy Now

ND Filter (1/100) CS-A34
Buy Now

Tripod & Pan Head Package
Buy Now

White Calibration Plate with Calibration Data
Buy Now

White Calibration Plate with Calibration Data and Certificate
Buy Now

White Calibration Plate without Calibration Data
Buy Now

Privacy Preference Center