News
Measuring Instruments
Konica Minolta introduces New Spectroradiometer CS-2000
A spectroradiometer with the world’s top level of performance for analyzing extremely low luminances and a 100,000:1 contrast measurement capability.
Konica Minolta Sensing, Inc. (Hiroshi Furukawa, President; hereinafter referred to as “Konica Minolta”) is proud to introduce the Spectroradiometer CS-2000, a high-speed, high accuracy instrument for measuring the luminance and chromaticity of various display devices such as plasma displays, LCDs, etc.
| Product: | Spectroradiometer CS-2000 |
|---|---|
| Start of oversea sales: | Planned for latter half of January, 2008 |
In 1997, Konica Minolta introduced the Spectroradiometer CS-1000, a polychromator-type*1 instrument for measuring light-emitting devices such as various types of displays, LED products, etc. This was followed by the introduction of the CS-1000S for measuring ultra-small areas and the CS-1000T for measuring narrow angles, and this lineup has been highly praised by companies involved in the development and manufacture of various display devices.
With the advent of terrestrial digital broadcasting, the diffusion of various types of displays with full-spec high-definition TV capabilities for displaying beautiful images in fine detail is currently accelerating rapidly. With the latest technology, it is becoming possible to display gradations with contrasts of 100,000:1 to provide an even more realistic feeling. For this purpose, technical competition to display blacker blacks in particular is becoming ever more severe, increasing demands for an instrument that could measure extremely low luminances.
On the other hand, for the development of various types of display devices such as organic EL, etc. as well as conventional LCD and plasma displays, high-accuracy spectral analysis is necessary.
The CS-2000 being introduced at this time is a polychromator-type*1 spectroradiometer capable of measuring down to luminances of 0.003cd/m2, the world’s top level*2 of ultra-low-luminance measurement performance, enabling contrast measurements of 100,000:1*3. It provides the superior measurement performance essential for the manufacture and development of various light-emitting devices, including top-class displays. In addition, it offers switchable measurement angles to measure not only general areas but also extremely small regions. The CS-2000 is a fusion of the optical technology cultivated throughout Konica Minolta’s long history and the newest signal-processing technology, and is positioned as a Konica Minolta flagship model.
Konica Minolta offers products and services utilizing the technology and experience accumulated over our long history, such as the 2D Color Analyzer for measuring the color of an area light source, the Display Color Analyzer for measuring white balance, etc. in order to provide comprehensive support to the display industry from research and development through manufacturing. Konica Minolta will continue to offer such essential products and services to the imaging sector, including the display and light-source color measurement field, as an innovative, global company with advanced technology and high reliability to meet customer needs.
- *1
- A polychromator is a structure in which the light dispersed into its separate wavelengths by a diffraction grating (operating in the same way as a prism) is converged by a converging lens onto the specific positions for each wavelength on an array-type light-receiving element (sensor). This structure enables high-speed measurements since the light at all wavelengths is measured simultaneously by multiple sensors.
- *2
- For a polychromator-type spectroradiometer
- *3
- When peak luminance is 300cd/m2.
Main Features
1. Capable of accurate measurements down to ultra-low luminances of 0.003cd/m2
By utilizing our original optical design technology and signal processing technology, the CS-2000 achieves an additional digit of performance compared to previous models, providing high-accuracy measurements down to 0.003cd/m2 at a measurement angle of 1° and enabling stable measurements in the ultra-low-luminance region. In addition, it maintains a half bandwidth* of less than 5nm (considered necessary for measuring color) throughout the entire measurement wavelength range, enabling precise color measurements.
- *
- Half bandwidth: An indication of wavelength resolution
2. Selectable measurement angles enable measurements of large to small areas
With the CS-2000, measurement angles of 0.1°, 0.2°, and 1° can be selected. This enables a standard minimum measuring diameter of Ø0.5mm; when optional close-up lenses are used, measurements of areas as small as Ø0.1mm can be measured. The CS-2000 can thus be used not only for measuring general displays, but also for measuring ultra-small areas or distant light sources.
3. High repeatability
High repeatability* is achieved using a design that thoroughly eliminates mechanical and electrical noise sources.
- *
- Repeatability: For repeated measurements under the same measurement environment, the ratio of measurement difference compared to the average measurement value. An indication of measurement precision
4. Low polarization error
Polarization error* generated when using a reflection-type diffraction grating is reduced to 2%, enabling more stable measurements of display devices such as LCDs, etc. that use polarized light.
- *
- Polarization error: Error that occurs due to variations in the reflectance ratio of polarized light according to the acceptance angle of the instrument.
5. Easy-to-understand operation panel enables simple operation
The operation panel and LCD screen is located on the back of the instrument. With the simple but comprehensive operation panel, you can directly select necessary functions. Since a color LCD is used, spectral graphs can be displayed on the instrument itself without the need for a computer, enabling the verification of spectral waveforms or the spectral luminance of a selected wavelength.
In addition, using the Data Management Software CS-S10w Professional included as a standard accessory enablesthe CS-2000 to be controlled from a computer as well as visual, easy-to-understand displays of measurement data together with various types of evaluation and analysis.
Main Specifications
| Measurement angle | 0.1°, 0.2°, 1° selectable | |
|---|---|---|
| Measurement wavelength range | 380 to 780nm | |
| Wavelength resolution | 0.9nm/pixel | |
| Display wavelength pitch | 1.0nm | |
| Median wavelength precision | ±0.3nm (at 435.8nm, 546.1nm, and 643.8nm) | |
| Half bandwidth | 5nm or less | |
| Luminance measurement range (for Standard Light Source A) |
0.1° measurement angle: 0.3 to 500,000 cd/m2 0.2° measurement angle: 0.075 to 125,000 cd/m2 1° measurement angle: 0.003 to 5,000 cd/m2 |
|
| Minimum luminance display | 0.00002 cd/m2 | |
| Accuracy | Luminance | ±2% |
| Chromaticity (1° measurement angle) | x,y: ±30/10,000 (0.003 to 0.005 cd/m2) x,y: ±20/10,000 (0.005 to 0.05 cd/m2) x: ±15/10,000 (0.05 to 5,000 cd/m2) y: ±10/10,000 |
|
| Repeatability | Luminance | 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) |
| Chromaticity (1° measurement angle) | 20/10,000 (0.003 to 0.005 cd/m2) 10/10,000 (0.005 to 0.1 cd/m2) 6/10,000 (0.1 to 0.2 cd/m2) 4/10,000 (0.2 to 5,000 cd/m2) |
|
| Polarization error (400 to 780nm) |
0.1°, 0.2° measurement angle: 3% or less 1° measurement angle: 2% or less |
|
| Measurement time | Approx. 2 to 243 sec. | |
| Interface | USB 1.1 | |
| Operating temperature/humidity range | 5 to 35°C; Relative humidity 80% or less with no condensation | |
| Dimensions (W × H × D) | 158 × 200 × 300mm (Main unit) Ø70 × 95mm (Lens) |
|
| Weight | 6.2kg (including lens) | |
- *
- Measurement conditions for accuracy/repeatability:
Measurement subject: Standard Light Source A; Ambient temperature: 23°C±2°C
Relative humidity: 65% or less - *
- Specifications and appearance subject to change without notice.
