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Since the development of high-definition TV broadcasting, there is an accelerating proliferation of high-quality display devices which support full HD for reproduction of sharp, high-resolution images. State-of-the-art technology is now achieving tone reproduction with contrasts of 100,000 : 1, offering an almost-real feeling. This has spurred technical competition for reproduction of "blacker blacks" in particular, resulting in the need for an instrument that can measure extremely low luminance.
In addition, the development of various light-emitting devices, including organic electroluminescent (EL) displays as well as conventional LCD and plasma displays, requires more accurate spectrum analysis. The CS-2000 is a polychromatortype spectroradiometer which achieves 100,000 : 1 contrast measurement with the world's top level capability to detect extremely low luminance levels of 0.003 cd/m2.
Highly accurate measurement of luminances as low as 0.003 cd/m2
Konica Minolta's original optical design and signal-processing technologies provide accurate measurement of luminance/chromaticity down to extremely low luminances of 0.003 cd/m2.
Low-luminance measurements: From 0.003 cd/m2
Measurement accuracy: ±2% (Luminance)
Quick measurements even at low luminance
Designed to thoroughly eliminate mechanical and electrical noise factors, the CS-2000 makes quick measurements with good repeatability possible even at low luminance levels.
Measurement time for 1 cd/m2:
Approx. 5 sec. (FAST mode)
Low polarization error
The polarization error generated when using a reflection-type diffraction grating has been minimized to 2% (measuring angle: 1°). This ensures more stable measurements of display devices that use polarization, such as LCDs.
Half bandwidth of 5 nm
The CS-2000 enables you to select the optimum measuring angle according to the application.
Measuring angle selection: 1°, 0.2°, 0.1°
Minimum measuring area: o0.1 mm ( when the optional close-up lens is attached)
Selectable measuring angle for measurement of tiny areas
- The operating temperature range of 5 to 35°C ensures reliable operation at temperatures in actual work environments.
- Measurement can be started after a warm-up time of only 30 seconds. (Measuring angle: 1°; Target luminance: 5 cd/m2 or more; 23°C)
Practical design
- The operating temperature range of 5 to 35°C ensures reliable operation at temperatures in actual work environments.
- Measurement can be started after a warm-up time of only 30 seconds. (Measuring angle: 1°; Target luminance: 5 cd/m2 or more; 23°C)
Stable measurement even of periodic light sources
- Internal synchronization measurement
Measurement at numerically-input frequency
- External synchronization measurement
Measurement with line input of vertical synchronization signal to instrument
- Multi-integration mode measurement
Measurement for reducing variations due to unsynchronized measurements or synchronized measurements of sources having irregular light-emission cycles
Technical Specifications
| Model |
CS-2000 |
| Wavelength |
380 to 780 nm |
| Wavelength |
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 bandwidth |
5 nm or less (half bandwidth) |
| Measuring angle (selectable) |
1° |
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 luminance display |
0.00002 cd/m2 |
| 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 to )
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 to )
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 to )
y :±0.001 |
| Repeatability: Luminance(2σ) *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) *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 |
2 % or less(400 to 780 nm)：1°, 3 % or less(400 to 780 nm)：0.1° 0.2° |
| Integration time |
Fast: 0.005 to 16 sec.; Normal: 0.005 to 120 sec. |
| Measurement time |
1 sec. minimum (Manual mode) to 243 sec. maximum (Normal mode) |
| Color space mode |
Lv x y, Lv u' v', Lv TΔuv, XYZ, spectral graph, dominant wavelength, excitation purity |
| 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 |
| Weight |
6.2 kg |
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