Constructed using machined aluminium and stainless steel and weighs -
1 pounds (450 gms) [1.2 pounds (540 gms) with view finder VO-201].
Visbile spectrum (380 - 780 nm) with a
spectral bandwidth of 4 nm
spectral resolution of 1.6 nm/pixel
spectral accuracy of ± 0.3 nm
A single fixed aperture but can be customized when ordering (available at order time: 3°, 2°, 1°, 0.5°, 0.25°, 0.125°).
Designed for View Finders that are easily detachable and replaceble from the instrument's main body.
Luminance range of 0.02 Nits to 154,000 Nits (0.006 fL to 46,000 fL) (sensitivities measured for 10:1 signal to noise (RMS))
The ruggedly constructed housing of the CR-250 is made of machined aluminium and stainless steel, and can withstand high acceleration rates for the most demanding motion positioning systems and environments. All optical components are fixed to ensure that no optical misalignments occur due to vibration, shock or high acceleration/ deceleration rates.
It weighs only 1.2 pound (0.54 kg), and it is the perfect tool for display inspection and calibration and for mounting on fast moving XYZ tables. Its small size and shape allows for several CR-250s to be mounted in the same motion control system and the simultaneous measurement of several spots in the same display.
The CR-250 is a USB 2.0 compatible device, remotely controlled by the host software from any personal computer, laptop or net book. As an option, the CR-250 can also be controlled by an Ethernet 10BASET/100BASE-TX IEEE-802.3 compliant connection or a RS-232 port.
The CR-250 can be equipped with an optional External Trigger Port which enables remote measurement activation from either a push button, a peripheral device, or by hardware trigger signals to measure strobes/pulsed lights, and start/stop signals. This option is ideal for fast temporal events that need to be precisely synchronized for measurement or data capture.
Screw-on rubber hood adapter is included for contact measurements. Measurement spot diameter on contact measurements is 8 mm for a unit that has a 2 degree aperture and 14 mm for a unit that has a 1 degree aperture.
Future proof your CR-250 with additional custom color matching functions.
The CR-250 allows uploading up to three sets of custom CMF’s. This “custom” CMF’s can be alternate standards proposed by different organizations, such us Judd-Voss 1978 or custom CMF’s a researcher may be working on.
The CRIApp application is a streamlined, cross-platform, user-centric application designed to perform all colorimetric - based analysis. It provides a familiar and consistent workspace no matter which platform you are in. The CR-250 comes standard with a built-in, easy-to-learn command interpreter, for users to quickly create their own dedicated software to perform specific measurement tasks or for inclusion in an Automated Test Environment.
In addition, a fully documented communication language with numerous real-world, sample templates are included as starting points for customers to build their own software tools using any of the modern computer development environments. LabVIEW driver is available upon request.
All our instruments are calibrated using NIST traceable calibration standards at a color temperature of 2856 Kelvins. This is a standard calibration method used by most spectroradiometer manufacturers. In addition to the NIST traceable calibration standards we take pride in having developed proprietary Calibration and Quality Assurance processes that require a laboratory grade scanning double monochromator and high accuracy filters of known transmittance and chromaticity. Essentially, no other spectroradiometers are used during manufacturing and Q.A. because none of them are as accurate as a laboratory grade scanning double monochromator. The CR-250, when compared with most of the high end spectroradiometers in the market, has been found to be on par or to exceed in accuracy and performance.
The Colorimeter Utility is an accompanying tool that aids in updating, preserving and recovering the state of the instrument.
The CR-250 has been designed with a direct Viewfinder that is easily detachable from the instrument’s main body (e.g., snaps in and out manually), and can be replaced with different types of Viewfinders depending on user needs.
Direct Viewfinders have been utilized for several decades in optical measuring instruments. Typically, the eyepiece is in a fixed location on the instrument and is otherwise non- movable. As such the viewer must align themselves with the angle of the viewing optics to use the eyepiece. This can be disadvantageous in situations where the eyepiece is in an inaccessible and/or uncomfortable spot for the viewer. The CR-250 overcomes the limitations of the typical direct Viewfinder by offering the horizontally rotatable Viewfinder VO-201.
For those cases where the CR-250 is mounted vertically on a test fixture or a robotically controlled XYZ table; the Perpendicular Viewfinder VO-202 is an alternative to the rotatable viewing system.
The VO-204 is a very compact Viewfinder that couples to a small C-Mount camera for positioning and monitoring the measurement spot from a robotically controlled system.
| Detector | CMOS image sensor, 256 pixels |
|---|---|
| Spectral Range | 380 - 780 nm |
| Spectral Bandwidth | 4 nm |
| Spectral Accuracy | ± 0.3 nm |
| Spectral Resolution | 1.6 nm / pixel |
| Luminance Range | 0.02 Nits to 154,000 Nits (0.006 fL to 46,000 fL)‡ |
| Luminance Accuracy | ±2 %Ω |
| Luminance Repeatability | ≤1%Ω |
| Chromaticity Accuracy | ± 0.0015 x, yΩ |
| Chromaticity Repeatability | 0.0005 x, yΩ |
| Polarization Error | ≤ 0.5 % |
| Digital Resolution | 16 bits |
| Optics | Direct viewing and direct measuring system |
| Objective Lens | 40 mm |
| Focusing Range | 200 mm to infinity |
| Aperture | Fix (available at order time: 3°, 2°, 1°, 0.5°, 0.25°, 0.125°) |
| Field of View | 10° |
| Viewing optics | Patent pending removable and rotatable Viewfinder |
| Custom Synchronization | 10 - 10000 Hz |
| Exposure Time Range | 0.02 to 30 seconds |
| Power Requirements | 5V, 120 mA (600 mW) via USB 2.0 |
| Interface | USB 2.0, Ethernet, RS-232 |
| Weight / Mass | 1 pound (0.45 kg) 1.2 pounds (0.54 kg) with Viewfinder VO-201 |
