iQ-Flatlight

Spectral programmable light source for scene illumination

iq-flatlight image

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Illuminate reflective test charts and scenes with the exceptional benefits of this spectral programmable iQ-LED powered light source.

The flexible illumination of reflective test charts is now possible with iQ-Flatlight, a spectral programmable light source. It is the perfect tool to perform image quality measurements and a camera calibration.

Like the other illumination devices of the iQ-LED product line, iQ-Flatlight is able to emulate any standard illuminant or spectrum exactly by using the 22 LED-channels. Changing between different spectra in fractions of a second with one mouse click allows measurements under different lighting situations without the replacement or modification of the illumination system.

A pair of iQ-Flatlights is used, which are familiar from standard photo or video light units and they are placed on the left and right sides in front of the test chart. iQ-Flatlight is controlled by the accompanying software solution. The shiftable calibration device, based on a micro spectrometer, ensures a perfect spectral match and is also used to calibrate the iQ-Flatlight.

iQ-Flatlight can also be used to illuminate scenes or rooms for specific image quality measurements when mounted on the ceiling.

Technical information

iQ-Flatlight is available with 10 or 20 iQ-LED elements per light unit. With a pair of iQ-Flatlight a maximal intensity of 1000 lux respectively 2000 lux can be reached on the test chart (for details please see specifications). 
Each iQ-Flatlight is mounted on a rolling cart.

The emitted spectrum of iQ-Flatlight covers the visible range between 400 and 820 nm. 20 color channels and 2 white channels, adjustable in 1000 steps, are distributed over this range.

The control software comes with several predefined standard illuminants and a generation function Planck radiator spectra. 
iQ-Flatlights additionally contain a high quality fluorescence light source.

Due to the durable nature of LEDs and the internal calibration procedure, the lifetime of iQ-Flatlights is very long and always delivers the same quality of the spectra compared to other light systems.

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Specifications »

  iQ-Flatlight-10x iQ-Flatlight-20x
Principle diffuse light panel
Light sources 10 x Image Engineering iQ-LED units: overall 800 LEDs 20 x Image Engineering iQ-LED units: overall 1600 LEDs
2 white channels and 20 color channels / controlled via 1000 steps per channel and 32 khz PWM / Spectral range: 400 ¡V 820 nm / approx. lifetime of 10.000h
HQ fluorescence tube (separate use, 1000 step SW dim control) 2x HQ fluorescence tube (separate use, 1000 step SW dim control)
Control system NIST traceable calibrated micro spectrometer (Spectral Range: 350 ¡V 800 nm / Resolution: 1024 pixel)
Uniformity of luminance in the scene >90%
Condition:
Two iQ-LED flatlights placed beside a IE 1066 test chart in ~80cm distance and ~45 deg. viewing angle
Included standard illuminants D50, D55, D65, D75, B, C, A
Planckian spectral curve by selected temperature (1900 K up to 18.000 K)
The iQ-LED technology is optimized for best spectral match and allows CRI
values up to 99, depending on illuminant and intensity.
Illumination stability +/-2%
Response time (switch illuminant) < 50ms
Output data while calibration device is in measure position: real time measurement of spectral trend, CCT, CRI, illumination and radiant power
Maximum / Minimum illumination values Single device: max. up to 1000 lx (40cm dist.)*
min. down to 25 lx (40cm dist.)*

Two iQ-Flatlights, illumination on chart**:
Predefined illuminants: up to 400 lux
Without defined spectra: up to 1000 lux		 Single device: max. up to 2000 lx (40cm dist.)*
min. down to 25 lx (40cm dist.)*

Two iQ-Flatlights, illumination on chart**:
Predefined illuminants: up to 800 lux
Without defined spectra: up to 2000 lux
Dimmable software based dim function by presetting intensity (lux / watt), while calibration device is in measure position
Warm up time < 2 min. at optimal ambient temperature
Operating ambient temperature range optimal: 22¢X to 26¢X degrees Celsius / Maximum: 18¢X to 28¢X degrees Celsius
Computer requirements PC with Windows 7 operating system (or higher) / USB port
Power supply 110 V / 230 V, 200 W
Dimension (w/d/h) 76 cm x 70 cm x 175 cm
Weight 30kg
Delivery includes Flatlight (10 x iQ-LED, one fluorescence tube), micro spectrometer calibration device (measurement in 40 cm distance, insertable via folding mechanism), power cord, USB cable, control software Flatlight (20 x iQ-LED, two fluorescence tube), micro spectrometer calibration device (measurement in 40 cm distance, insertable via folding mechanism), power cord, USB cable, control software
Features

external measured spectra auto generation, creation or adaptation of spectral trends via 22 software controlled LED channels, save and load function of self-defined spectral arrangements or intensities, creation of test sequences,C++ API available

* depending on illuminant and curve fit / CRI
** Condition: Two iQ-LED flatlights placed beside a IE 1066 test chart in ~80cm distance and ~45 deg. viewing angle

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