Features
Measuring Instruments
CL-200A
Incident Color Meter and Color Temperature Meter
A compact, lightweight instrument for measuring light sources, including new LED lighting and EL lighting. Measurement and display of tristimulus values, chromaticity, correlated color temperature, dominant wavelength, excitation purity, illuminance, and difference values can be performed.
Features
Main features of CL-200A
Compact, easy to carry, and battery-powered
The CL-200A body fits in the palm of your hand, and is easy to carry along to take measurements where needed. It can be powered by 2 AA-size batteries (or by an optional AC adapter), and can also provide the proper battery-replacement warning even when using rechargeable batteries.
Easy measurement of correlated color temperature
The CL-200A can measure correlated color temperature and the difference from the blackbody locus Δuv, values which are often used to describe the color of light sources. When an ideal blackbody (an ideal body which absorbs all incident electromagnetic radiation) is heated, it begins to emit light, and as the temperature of the blackbody increases, the color of the emitted light changes from red to yellow to white. The color temperature of light is defined as the absolute temperature (in Kelvin) at which a blackbody would emit that particular color of light. The curve of colors of light emitted by a blackbody at various temperatures is called the "blackbody locus" and can be seen in the figure at left below. Since many light sources do not lie directly on the blackbody locus but are close to it, "correlated color temperature" is used to describe their colors. The region for which correlated color temperatures are defined is shown by the isotherm (constant temperature) lines in the figure at right below. When describing a color using correlated color temperature, normally the difference from the blackbody locus ∆uv is stated in addition to the correlated color temperature.
Ideal for quality control of white LED lamps
White LEDs are usually made up of a blue LED which has been coated with a yellow phosphor material, so that the blue light emitted by the LED mixes with the yellow light emitted by the phosphor to create white light. However, since the spectral emission distribution of the blue light emitted by the LED varies slightly for each unit, variations in the resulting white light will occur. Because of this, for white LEDs it is very important to control not only the brightness but also the color. The CL-200A can measure both the chromaticity from the phosphor and also inspect the output light quality of the final white LED lamp assembled from multiple white LEDs.
- LED ranking is also available with the included Data Management Software CL-S10w.
Detachable receptor head and multi-point measurements
The receptor head can be detached from the main body and then connected at a distance using a normal LAN cable (and optional Adapter Units on receptor head and main body), making it easier to install the receptor head in an inspection system. Additional optional receptor heads with Adapter Units can also be connected to the first Adapter Unit for Receptor Head, and the receptor to read data from can then be selected using the main body keys.
Automatic zero-adjustment without a receptor cap
As soon as the power is turned on, the CL-200A automatically carries out zero adjustment and calibration, even when a cap has not been attached to the receiver, thus allowing measurement operations to be started almost immediately.
Sliding key cover
The sliding key cover prevents less-used keys from being pressed accidently.
Additional features provided by included Data Management Software CL-S10w
Data Management Software CL-S10w is an Excel® add-in that provides additional functions for the CL-200A and enables data management and analysis to be performed using Excel® functions.
Data transfer using main body buttons
When using the CL-200A with CL-S10w, measurements can be taken and data transferred to Excel® using the CL-200A's main body buttons as well as computer keys.
LED ranking function
Color variations, a top topic in the LED industry, can be quantified and automatically ranked.
Easier multi-point measurement
Although multi-point measurement using up to 30 receptor heads can be performed from the CL-200A main body, using CL-S10w enables easier control as well as easier handling and analysis of the data received from all receptor heads.
Multi-point measurement of projector (9-point example)
Multi-point measurement of building lighting (5-point example)
User calibration
User calibration enables compensation of measurement values to match a desired standard light source. Calibration can be performed by either of two methods: Single-point calibration or RGBW calibration.
JIS correlated color temperature
In addition to the correlated color temperature determined using the method in the CL-200A itself, correlated color temperature can also be determined using the equations defined by JIS (Japanese Industrial Standards).
