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Ultra-compact camera calibration light source

A uniquely designed iQ-LED V2 camera calibration device for production line integration.

The CAL2 is a small and compact light source that uses iQ-LED V2 technology to illuminate a 60 mm x 60 mm opening for camera testing and calibration. It is particularly suited for integration into production lines.

iQ-LED V2 technology is a light source that is capable of generating custom spectra to replicate various light sources in a test lab environment. The CAL2 has one iQ-LED V2 element built into it that uses 20 LED-channels to recreate almost any light spectrum for your camera testing.

The CAL2 has a unique design for easily integration into production lines as well as other testing areas or labs where space is limited. The spectrometer used for calibrating the CAL2 is separate from the light source (where as in our other CAL products, it is built-in) so that a single spectrometer can calibrate separate CAL2 devices to save space. This feature is especially important for production line calibration. Even without an integrating sphere design, this device still achieves uniformity of > 96%.

The 60 mm x 60 mm opening of the CAL2 allows certain devices such as cellphones to calibrate multiple camera modules at one time. If the image processing of the camera is fast enough, a complete camera calibration can be done in less than a second. There is also a new diffuser plate that has better Lambertian characteristics as opposed to the first generation-device.

Other benefits of the CAL2 include:

  • Exposure adjustment
  • Detection of defect pixels
  • Determining luminance and color shading measurements
  • Checking the auto white balance under various light sources (i.e., A, C, D50 D55, D65, D75)
  • Sepctral sensitivity measurement with module-based color corrections

The CAL2 uses a mini-spectrometer with a spectral range of 350 – 860 nm to ensure better spectral resolution and higher sensitivity.

iQ-LED control software is provided with the CAL2. An iQ-LED API is also available as an option for integration into your custom design.

Light source 1 x iQ-LED V2: 41 SMD high power LEDs / 20 color channels / 4000 step control per channel and 32 kHz PWM (switchable to 1000 steps with 128 kHz) / Spectral range:
380 – 820 nm / approx. lifetime of 10000 hours
Uniformity 60 mm x 60 mm output window > 96%
Predefined standard illuminants D50, D55, D65, D75, A, B, C, E
Planckian spectral curve by selected temperature (1900 - 18000 K)
Illumination stability +/- 1% when stabilized
(2% after switching D illuminants in the first 5 seconds)
Maximum / Minimum illumination values max. up to 8000 lx for standard D illuminants
min. down to 25 lx, depending on illuminant and required curve fit /CRI
Power supply 110 V / 230 V, 200 W
Dimension (W x H x D) 130 x 255 x 265 mm
Weight 2.5 kg
Delivery includes CAL2 V2, spectrometer, power cord, USB cables, control software, calibration protocol