The LE7 is a uniform lightbox that uses iQ-LED V2 technology to increase the effectiveness of image quality camera testing with transparent test charts.
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. As with our other iQ-LED products, the LE7 uses 20 LED-channels to emulate almost any light spectrum for your camera testing.
The LE7 contains two or four iQ-LED elements and is based on the principle of an integrating sphere to provide > 97% uniformity of the active chart area.
This product uses a mini-spectrometer with a spectral range of 350 – 860 nm to ensure better spectral resolution and higher sensitivity.
LE7-IR – Adjustable light extending to the IR spectrum
In the LE7-IR version, two iQ-LED V2 elements cover the visible spectrum and four iQ-LED IR elements with 11 channels are in the near-infrared region. These extra IR elements extend the spectral range from 380 – 1050 nm. The control software and API do not change.
LE7 with camSPECS plate
The camSPECS plate is a uniquely designed transparent plate for spectral sensitivity measurements and camera color calibration. The plate is designed after the front plate of the camSPECS device with all of the interference filters mounted onto one “test chart” for more efficient spectral sensitivity measurements.
The camSPECS plate has been developed as an option to use with the LE7 for uniform iQ-LED illumination. iQ-LED illumination (as opposed to the halogen light source in the camSPECS device) can generate custom spectra to replicate numerous light sources for camera characterization and calibration.
The plate can be used with any LE7 version or variation. An external calibration device is included with the plate. Please contact us for details.
|Principle||Integrating sphere to illuminate transparent test charts based on iQ-LED technology|
|Light source||2 x iQ-LED V2 / 4 x iQ-LED V2 / 2 x iQ-LED V2 + 4 x iQ-LED IR
41 SMD high power LEDs separated into 20 color channels (each unit)
11 additional channels for iQ-LED IR
|Intensity||Controlled via 4000 steps per channel and 32 kHz
PWM (switchable to 1000 steps with 128 kHz)
|Spectral Range||380-820 nm
380-1050 nm (IR)
|Uniformity||97 % for active chart area, 280 x 157.5 mm
96 % for full output window, 290 x 220 mm
|Predefined standard illuminants||D50, D55, D65, D75, A, B, C, E|
|Illumination stability||+/- 1% when stabilized (2% after switching D illuminants in the first five seconds)|
|Response time (switch illuminant)||< 50ms|
|Maximum/ Minimum illumination values||LE7-2 x / LE7-IR: Up to 6000lx for standard D illuminants
LE7-4x: Up to 12000 lx for standard D illuminants
Min. 25 lx (depending on illuminant and required curve fit / CRI), with ND filters for low-intensity use down to 1.5 lx
|Power Supply||110 V / 230 V
LE7-2x: 180 W – LE7-4x: 340 W – LE7-IR: 260 W
|Dimensions (W x H x D)||620 x 730 x 430 mm|