The CAL3-XL is a calibration light source for cameras with a large field of view. Similar to the normal CAL3, the CAL3-XL is an integrating sphere that uses iQ-LED technology to generate custom spectra.
iQ-LED V2 technology is a light source that can generate custom spectra to replicate various light sources in a test lab environment. The CAL3-XL uses four iQ-LED V2 elements as opposed to just one that the normal CAL3 uses. Each unit contains 20 LED channels to emulate almost any light spectrum for your camera testing.
Apart from having more iQ-LED elements, the CAL3-XL is also much larger in size and contains a wider bowl diffuser to permit easier evaluation of larger cameras with wide-angles.
Similar to the original CAL3, the XL version is primarily used for camera calibration, determining defective pixels, exposure adjustment, and luminance and color shading measurement. Where the XL version differs, of course, is its ability to more efficiently test much larger cameras and lenses.
The CAL3-XL uses a mini-spectrometer with high spectral resolution, and a spectral range of 350 – 870 nm.
|Principle||Integrating sphere designed as calibration light source for high field of view cameras based on iQ-LED technology|
|Light source||4x iQ-LED elements. 41 high-power SMD LEDs with 20 color channels
Controlled via 4000 steps per channel and 32 kHz PWM (switchable to 1000 steps with 128 kHz)
|Spectral range||350 - 870 nm|
|Uniformity||>90%* at a depth of approx. 65-85 mm inside the diffuser|
|Predefined standard illuminants||D50, D55, D65, D75, A, B, C Planckian spectral curve by selected temperatures (1900 – 18000 K)|
|Illumination stability||+/- 1% when stabilized (2% after switching D illuminants in the first five seconds)|
|Max/Min illumination values||Max. up to 4500 lx for standard D illuminants
Min. down to 10 lx for standard D illuminants
|Power supply||100 V / 230 V / 200 W|
|Dimensions (W x H x D)||535 x 643 x 330 mm|
|Weight||Approx. 15 kg|
*Measurement performed in the center of diffuser, standard illuminant D65