The Colorimetry Research CR-100 is completely solid-state with no mechanical shutter or moving parts to ensure high reliability and long MTBF, with high operational speed, and impressive low light measurement capability.
- ColourSpace Integration
- Large 23+mm Spot Size
- Four-Colour Matrix Method
- Exceptionally Fast Response Time
- 0.0007 to 5150 cd/m2
- Solid Machined Aluminium & Stainless Steel Construction
The CR-100 is designed for all display types, and can measure all projection as well as all luminous display technologies, and uses the Four-Colour Matrix method, developed by the National Institute of Standards and Technology (NIST), and improves the accuracy of tristimulus colourimeters for measurements of colour displays and has been verified to be ideal for DLP, D-ILA, SXRD, cathode rays tubes (CRTs), liquid crystal displays (LCDs), plasma, and organic light emitting diodes (OLED) displays.
Each CR-100 goes through a strict quality control process, with every tristimulus filter measured using a double monochromator and the results are provided along with the relative errors at 1 nm wavelength increments, so the user can verify that his instrument is within the maximum f1' errors guaranteed. No pre use calibration (black/white) is required.
- Wavelength Range: 380–780 nm
- Luminance Range: 0.0007-5150 cd/m2
- Luminance Accuracy: ±2% @ 0.34 cd/m2, 0.4 second exposure
- Luminance Repeatability: 0.2% @ 0.34 cd/m2, 0.4 second exposure; 1.5% @ 0.034 cd/m2, 0.5 second exposure; 1.5% @ 0.0034 cd/m2, 20 seconds exposure
- Chromaticity Accuracy: ±0.0015 x, y @ 0.34 cd/m2, 0.4 second exposure; ±0.0015 x, y @ 0.068 cd/m2, 20 seconds exposure
- Chromaticity Repeatability: 0.0005 x, y @ 0.34 cd/m2, 0.4 second exposure; 0.0005 x, y @ 0.068 cd/m2, 20 seconds exposure
- Measurement Spot Size: 23mm at end of hood; 31.7mm at 100mm from hood
- Spot Size Calculation: = 23.0mm +0.08732*distance to object
- Polarization error: ≤0.1%
- Synchronization frequencies: 10 - 500 Hz
- Exposure Time Range: 1 ms to 20 seconds
- Power Requirements: 5V, 120 mA (600 mW) via USB 2.0
- Interface: USB 2.0
- Weight: 0.34 Kg
CIE Tristimulus filter f1' errors
The f1' value, specified in percentage error, represents the degree to which the relative spectral responsivity deviates from the CIE V(λ) curve.
- Y (Photopic) Guaranteed: ≤2.0% - Typical: 1.4 – 1.8%
- Xr (Red) Guaranteed: ≤3.0% - Typical: 2.3 - 2.7%
- Xb (Red under Blue)) Guaranteed: ≤1.2% - Typical: 0.8 - 1.0%
- Z (Blue) Guaranteed: ≤3.5% - Typical: 2.2 – 2.7%
The CR-100 can store up to 20 individual display matrices, enabling specific display technology to be perfectly matched.
The included CRI App from Colorimetry Research enables user to generate their own matrices, and upload into the probe in addition to those provided as standard from Colourimetry Research, or even via third parties.
Note: if a change is made to the CR-100 internal settings you need to take a reading with the probe to have the settings remembered.
- USB 2.0 Cable
- Universal Mounting Bar
- Rubber Hood
- Hard Carry Case (specify if 2nd probe being ordered)
- Dual meter mount (free with 2nd probe)
- Long reach meter mount extension bar (free with 2nd probe)
- Cosine/Illuminance Receptor (optional ~ £395)
- ND Filters (optional ~ £395 each)
- Filter holder (optional ~ £130)
Note: ND filters and Cosine Receptors must be calibrated with the unit. If a ND filter or Cosine Receptor is purchased after the unit has shipped from the factory the unit must be shipped back to the factory in order to get the added accessory properly calibrated with the unit.
The CR-100 should be factory recalibrated/re-certified every year to two years, depending on usage and storage, or when obvious issue are found (after physical shock to the probe for example).
Cost is $350 USD, plus shipping.
Contact Colorimetry Research to schedule recalibration/re-certification.
An alternate to the CR-100 is the CR-200, for use with optional VO-201 Viewing Optics.
However, for display calibration the CR-200 with viewing optics is not recommended as low-light sensitivity is reduced.
The CR-100 without viewing optics is the recommended Colorimetry Research Tristimulus probe for display calibration.
CR-200 & VO-201
Colorimetry Research Alternative Probes
Light Illusion can also supply any Colorimetry Research probe, or optional accessories.
- CR-280RH VIS+NIR
- CR-280 VIS+NIR
- Any Accessories
Contact Light Illusion directly for further information.
As with all probes, CR-100 operation and function is controlled via the Probe Options menu, accessed via the Profiling window.
The CR-100 has a range of variables that are directly associated with the probe - including Exposure Multiplier, Max Exposure Time, Sync Frequency, and probe Calibration Settings (Matrix pre-sets) - as well as generic probe settings, such as Extra Delay Time, Probe Matching, Probe Offset, etc.
Calibration Settings provides generic probe settings and preset Matrix options, as well as the Probe Calibration option.
The Drop-down menu provides access to the pre-set Matrices held within the CR-100.
The Matrix presets match the probe to different display technologies - specifically the backlight/illumination spectral response.
Average Low Light
Average Low Light is a probe generic option, that averages multiple readings in low-light situations using an advanced algorithm built into ColourSpace. The algorithm varies based on the probe in use to provide the best possible results.
The Probe Calibration button will re-set the Manual Sync Frequency based on readings taken directly from the display.
Manually entering the video signal frequency - 60Hz, 50Hz, etc. - is usually preferable.
Exposure Multiplier increases the exposure time by the selected multiple, increasing sensitivity & repeatability.
For example, the CR-100 can measure a minimum 0.003 nits with 0.5 sec exposure and 0.0007 nits with 20 sec.
See table below
Max Exposure sets the maximum exposure time for any given reading.
The default setting is 200 ms, which sets a maximum patch read time of approx. 1.5 seconds, when used with an Exposure Multiplier value of 1.
If using Closed Loop mode within ColourSpace (rather than DIP Mode) we do not recommend a Max Exposure value lower than 200ms, and would really recommend a higher value to improve dark patch readings.
|Max Exposure||500 msec.||250 msec.||100 msec.|
|Luminance (nits)||Total Read Time (seconds)|
|100 and above||0.12||0.12||0.12|
|0.035 and below||3.3||1.75||0.94|
The Manual Sync Frequency value is set automatically when the CR-100 is first connected, by reading a bright(ish) patch on the display to be profiled, but can be manually re-read at any time as needed.
The Auto and None settings are not used when measuring/calibrating displays or projectors.
With most TV monitor/displays/projectors the correct sync frequency is often the input signal frequency - 60Hz, 50Hz, etc., rather than the much higher PWM frequency of the display's backlight.
The test method to define the correct frequency is to use Manual Measure to measure a 50% brightness patch, and note any variation read-to-read. The correct frequency value will produce the minimum variation.
Extra Delay Time
Extra Delay sets a time after the patch has been changed before probe measurement starts.
This can deal with delays in the image pipeline.
Probe Matching is used to match the CR-100 Tristimulus to a Spectroradiometer, increasing the profile accuracy.
There are two different methods available for probe matching - 4 Colour Volumetric Matching (FCVM), and Multi-point Volumetric Matching (MPVM).
ColourSpace doesn't use the older, traditional, 4 Colour Matrix (FCMM) Method for probe matching, as the volumetric approach offers far greater probe matching accuracy.
Probe Offset enables a user to manually enter offset values for different probes/display combinations.
Perceptual Colour Match is a preferable approach.