CR-250RH Probe

Colorimetry Research CR-250RH Spectrophotometer

The Colorimetry Research CR-250RH is a compact, high-resolution spectrophotometer with a 5nm bandwidth and 1.6nm/pixel optical resolution. This specification is normally only found on spectrometers that cost from many £10,000's.


CR-250RH Probe

The Colorimetry Research CR-250RH is a compact, high-resolution spectrophotometer with a 4nm bandwidth and 1.6nm/pixel optical resolution. This specification is normally only found on spectrometers that cost many £10,000's.

Uniquely, the CR-250RH has a large 20+mm spot size, with small divergence angle, making it ideal for contact and non-contact measurement of all displays and projectors.

The CR-250RH designed for all display types, and can measure all projection as well as all luminous display technologies, and excels in low light, high accuracy for measurement of colour displays including DLP, D-ILA, SXRD, plasma, liquid crystal displays (LCDs), and organic light emitting diodes (OLED) displays, in contact and non-contact modes.

The CR-250RH is of very rugged construction, made of machined aluminium and stainless steel, with all optical components fixed to ensure that no optical misalignment can occur, and weighs only 1 pound (0.45kg).

All CR-250RH probes are calibrated using NIST traceable calibration standards at a colour temperature of 2856 Kelvins, using 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.

£5,553.00 ex. VAT

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Alternative CR Probe Options

Light Illusion can provide any Colorimetry Research probes, not just the specific units and accessories shown here. If you do not see information on the specific CR probe or accessory you are looking for, please use the Contact Light Illusion form to request further information.

Alternate probes that can be supplied include the CR-200, CR-250, and CR-300, for use with the optional Viewing Optics.

90deg Viewing Optics

CR-200 with 90deg Viewing Optics

Vertical Viewing Optics

CR-200 with vertical Viewing Optics

Monitor Viewing Optics

CR-200 with Monitor Viewing Optics

Dual Probe Mount

CR Probes Dual Mount

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LightSpace CMS Compatibility

The CR-250RH is one of the recommended probes for use with LightSpace CMS as it provides a high level of accuracy, enabling pre-calibration of Tristimulus probes for very accurate final profiling.

Spectroradiometers can be used for direct profiling, but relatively slow speed (and often poor low-light capability with lower quality Spectro's) can mean they are not ideal for profiling with large patch sets, as used when performing highly accurate calibration, as with LightSpace CMS.

Features and Options

  • 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: 0.05 fL to 45000 fL
  • Luminance Accuracy: ±2 % (measured with NIST traceable 2856K light source, at 0.5 fL)
  • Luminance Repeatability: ≤1 % (measured with NIST traceable 2856K light source, at 0.5 fL)
  • Chromaticity Accuracy: ±0.0015 x,y (measured with NIST traceable 2856K light source, at 0.5 fL)
  • Chromaticity Repeatability: 0.0005 x,y (measured with NIST traceable 2856K light source, at 0.5 fL)
  • Polarization error: ≤0.5%
  • Digital Resolution: 16 bits
  • Objective Lens: 50 mm, 60 mm, 75 mm, 100 mm (50 mm is the standard lens - all others are special order)
  • Custom Synchronisation: 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
  • Weight: 1.0 pound (0.45 Kg)

The CR-250RH has been designed specifically for the professional calibrator, providing a large spot size with contact measurement combined with a small divergence angle that keeps the measurement spot size within desired dimensions for distance calibration, as with projectors.

The rubber hood allows the probe to be positioned against screen surfaces, providing a shield for for stray ambient light.

CR-250RH Spot Size Calculation
  • 50mm lens: 20+(0.026 x distance in mm)
  • 60mm lens: 24+(0.02166 x distance in mm)
  • 75mm lens: 30+(0.01733 x distance in mm)
  • 100mm lens: 40+(0.013 x distance in mm)
Package Discounts

Combined Packages

Special 'Package' deals are available for Hardware and Software combination purchases, offering additional discount over the individual item prices.

Such package deals are a perfect combination for those looking for serious colour management, colour workflow, and calibration capabilities.

LightSpace CMS Integration

As with all probes, the CR-250RH operation and function is controlled via the 'Options' menu, accessed via the Calibration Interface, or Display Characterisation windows.

The CR-250 has only one set of variables that are directly associated with the probe - the Speed options, which control the maximum auto exposure time.
(This obviously ignores settings that are generic, such as Extra Delay Time, Probe Matching, Probe Offset, Luminance Units.)

CR-250 Options

The options are:

  • Speed: sets the exposure time.
    1=Slow: 30 sec exposure + 30 sec dark measurement
    2=Normal: 7.5 sec exposure + 7.5 sec dark measurement
    3=Fast: 3.75 sec exposure + 3.75 sec dark measurement
    4=2xFast: 1.875 sec exposure + 1.875 sec dark measurement
  • Sync Frequency: defines the sync frequency of the probe, with None being the default, although Manual can be used if the refresh rate of the display is known. Auto is not used.

Note: if a changes is made to the probe settings you need to take a reading with the probe to have the settings remembered by the probe.

For further information on the additional setting with the 'Options' menu see the Profiling Manual page.

Additional Additional Technical & Support Info.

Additional Software Required: LightSpace CMS
LightSpace CMS Demo: Downloads
Manufacturer Information: CR-250RH

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