LE7

    An illuminating sphere for test chart illumination and camera calibration

    LE7 lighbox for OECF measurements

    LE7 lighbox for OECF measurements

    Product Overview

    The LE7 is a uniform lightbox that uses iQ-LED technology to improve camera image quality testing with transparent test charts.

    iQ-LED 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, four, or six 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 achieve better spectral resolution and higher sensitivity.

    iQ-LED control software is provided with the LE7. Versions 3.2.0 and above allow you to control individual modules. Controlling modules individually allows a wider intensity range. An iQ-LED API is also available as a separate option for integration into your design.

    *Please note, we may be able to upgrade your existing LE7 V2 without having to order a whole new device (not guaranteed). Please contact our sales team for details.

    Key Benefits

    iQ-LED light source

    The LE7 is a uniform lightbox that uses iQ-LED technology to generate custom spectra for more accurate and flexible camera testing.

    Multiple variants

    Choose from variants that include 2x, 4x, or 6x iQ-LED modules. Using more modules increases your minimum and maximum illumination values.

    Spectral range

    The LE7 has a spectral range of 380-820 nm, and the LE7 VIS-IR variant has a range of 380-1050 nm.

    NIR testing

    The LE7 VIS-IR variant uses two standard iQ-LED modules and four iQ-LED IR modules that expand the spectral range for camera testing in the near-infrared (NIR) range.

    Extended dynamic range

    The LE7-E variant can create a dynamic range of up to 1:100.00 to expand testing in low-light scenarios.

    Color calibrations

    Using the LE7 with the TE292 camSPECS plate test chart allows you to perform camera color calibrations using the power of iQ-LED technology to increase accuracy.

    Product Variants

    In addition to the standard variants (LE7-2x, -4x, -6x), we also offer other unique variations.
    Camera tesing using the LE7 and TE292 VIS-IR test chart

    LE7 VIS-IR

    The VIS-IR version of the LE7 provides uniform illumination across the VIS-IR spectrum. This version includes two iQ-LED V2 elements covering the visible spectrum and four iQ-LED IR elements with 11 channels in the near-infrared region. These additional VIS-IR elements extend the spectral range to 380–1050 nm. The control software and API remain unchanged. We also offer many transparent test charts, such as the TE292B VIS-IR (camSPECS plate).

    The camSPECS plate has been developed as an option for use with the LE7 to provide 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 spectral sensitivity measurements, camera characterization, and calibrations, particularly color calibrations, including those in the NIR range.

    The plate is compatible with any LE7 version or variant. An external calibration device is included with the plate

    Camera color calibrations

    LE7-E

    The LE7-E version gives you the possibility to create a dynamic range of up to 1:100.000. Such a wide dynamic range greatly expands the testing possibilities, especially when testing in low light. This version is the only iQ-LED device capable of achieving such a wide dynamic range.

    This version uses six iQ-LED modules, with the top-center module covered by a 1.8 ND filter, making it suitable for low-light testing down to 0.25 lx. If you are measuring extremely low intensities, we recommend using an external radiolux (rather than the internal mini-spectrometer) to ensure accurate measurements.

    The LE7-E requires iQ-LED software version 3.2.0 or above to function effectively. With version 3.2.0, you can now control single modules inside the same device. Controlling individual modules is essential for achieving a wider dynamic range, especially in low-light conditions.

    LE7 - Basic

    As a basic setup, you can also choose to have the LE7 delivered without a spectrometer** and instead with a device that has preconfigured illuminants. These illuminants must be individually requested (up to 40) and programmed into your device before delivery.

    This option significantly reduces the product's total cost and is an excellent choice for new or smaller test labs looking to upgrade their image quality testing.

    Please contact our sales department to get started with a basic product.

    **A spectrometer can be purchased at a later date if desired.

    International Standards

    The LE7 is ideal for testing various cameras accoridng to different international standards.

    IEEE-2020

    An international standard for evaluating the image quality of automotive camera applications.

    IEC-62676-5

    An international standard for analyzing the image quality performance of security and surveillance systems.

    ISO Standards

    Evaluate camera image quality performance according to multiple ISO standards for digital imaging.

    Use Cases

    Near-Infrared (NIR) Testing

    NIR camera systems have become more prevalent in many industries, including automotive, where they play a crucial role in Advanced Driving Assistance Systems (ADAS) and in-cabin systems for driver and occupant comfort and safety.

    With the LE7 VIS-IR, you have a light source that can generate NIR light for more accurate testing of NIR camera systems in the comfort of a test lab.

    Spectral Sensitivity Measurements

    Measuring a camera's spectral sensitivity determines how sensitive its system is to each wavelength or light level in the visible spectrum.

    Traditional measurement methods use a monochromator, but these are complex devices with a steep learning curve. In contrast, LE7 can be combined with the TE292 camSPECS plate for spectral-sensitivity measurements, leveraging the power of iQ-LED technology.

    Product Video

    Technical Specifications

    LE7-2x
    LE7-4x
    LE7-6x
    LE7 VIS-IR
    LE7-E
    Light sources
    2x iQ-LED
    4x iQ-LED
    6x iQ-LED
    2x iQ-LED 4x iQ-LED VIS-IR
    5x iQ-LED 1x iQ-LED + 1.9 ND filter
    Intensity
    Controlled via 4000 steps per channel and 32 kHz PWM (switchable to 1000 steps with 128 kHz)
    Controlled via 4000 steps per channel and 32 kHz PWM (switchable to 1000 steps with 128 kHz)
    Controlled via 4000 steps per channel and 32 kHz PWM (switchable to 1000 steps with 128 kHz)
    Controlled via 4000 steps per channel and 32 kHz PWM (switchable to 1000 steps with 128 kHz)
    Controlled via 4000 steps per channel and 32 kHz PWM (switchable to 1000 steps with 128 kHz)
    Spectral Range
    380-820 nm
    380-820 nm
    380-820 nm
    380-1050 nm (IR)
    380-820 nm
    Uniformity
    97 % for active chart area, 280 x 157.5 mm 96 % for full output window, 290 x 220 mm
    97 % for active chart area, 280 x 157.5 mm 96 % for full output window, 290 x 220 mm
    97 % for active chart area, 280 x 157.5 mm 96 % for full output window, 290 x 220 mm
    97 % for active chart area, 280 x 157.5 mm 96 % for full output window, 290 x 220 mm
    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
    D50, D55, D65, D75, A, B, C, E
    D50, D55, D65, D75, A, B, C, E
    D50, D55, D65, D75, A, B, C, E
    D50, D55, D65, D75, A, B, C, E
    Illumination stability
    +/- 1% when stabilized (2% after switching D illuminants in the first five seconds)
    +/- 1% when stabilized (2% after switching D illuminants in the first five seconds)
    +/- 1% when stabilized (2% after switching D illuminants in the first five seconds)
    +/- 1% when stabilized (2% after switching D illuminants in the first five seconds)
    +/- 1% when stabilized (2% after switching D illuminants in the first five seconds)
    Response time (switch illuminant)
    < 50 ms
    < 50 ms
    < 50 ms
    < 50 ms
    < 50 ms
    Maximum/ Minimum illumination values for standard D55 illuminants (illuminating a TE291 D calibration chart)
    25 lx - 8000 lx
    100 lx - 16.000 lx
    25 lx - 24.000 lx
    25 lx - 8000 lx
    0,25 lx - 20.000 lx
    Dimensions (W x H x D)
    620 x 730 x 430 mm
    620 x 730 x 430 mm
    620 x 730 x 430 mm
    620 x 730 x 430 mm
    620 x 730 x 430 mm
    Weight
    16 kg
    16 kg
    16 kg
    16 kg
    16 kg

    Software Downloads

    Download the latest version of the iQ-LED Software. Click here for documentation.

    iQ-LED Control Software

    iQ-LED software V3.6.0 - Windows 64bit installer
    Go to Downloads

    iQ-LED API

    Please contact our sales team for the download link.

    Contact Sales

    Documentation

    Download technical specifications and other important documents.

    LE7 Datasheet

    Technical specifications and product details
    Download PDF

    LE7 User Manual

    Complete operating instructions
    Download PDF

    Product Flyer

    A basic overview of the LE7
    Download PDF

    iQ-LED Software User Manual

    Complete operating instructions for the iQ-LED control software

    Download PDF