Image Engineering CAL3 Manuel utilisateur

Image Engineering GmbH & Co. KG · Im Gleisdreieck 5 ·50169 Kerpen-Horrem ·Germany

T +49 2273 99991-0 · F +49 2273 99991-10 · www.image-engineering.com

CAL3

User Manual

November 3, 2021

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CONTENT

1INTRODUCTION......................................................................................................... 3

1.1 Conformity ............................................................................................................ 3

1.2 Intended use......................................................................................................... 3

1.2.1 Departing from described setup........................................................................3

1.2.2 USB connection...............................................................................................3

1.3 General safety information..................................................................................... 4

2GETTING STARTED................................................................................................... 4

2.1 Scope of delivery................................................................................................... 4

3OPERATING INSTRUCTIONS HARDWARE ............................................................... 5

3.1 Overview display and ports.................................................................................... 5

3.2 Connecting the hardware....................................................................................... 6

3.3 Camera positioning................................................................................................ 7

4OPERATING INSTRUCTIONS SOFTWARE................................................................ 8

4.1 Requirements........................................................................................................ 8

4.2 Software installation .............................................................................................. 8

4.3 Starting the system................................................................................................ 9

4.3.1 Spectrometer settings......................................................................................9

4.3.2 iQ-LED calibration............................................................................................9

4.4 Low-intensity use..................................................................................................10

5ADDITIONAL INFORMATION....................................................................................11

5.1 Maintenance ........................................................................................................11

5.2 Care instructions ..................................................................................................11

5.3 Disposal instructions.............................................................................................11

6TECHNICAL DATA SHEET........................................................................................12

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1 INTRODUCTION

Important information: Read the manual carefully before using the device.

Inappropriate utilization may cause damage to the device, to the DUT (device under test), and/or other

components of your setup.

Keep these instructions in a safe place and pass them on to any future user.

1.1 Conformity

We, Image Engineering GmbH & Co. KG, hereby declare that the CAL3 corresponds to the essential

requirements of the following EC directive in its current version:

•Electromagnetic Compatibility - 2014/30/EU

•RoHS 2 - 2011/65/EU

•Low Voltage - 2014/35/EU

1.2 Intended use

The integrating sphere is designed as a calibration light source based on iQ-LED technology for wide

field of view cameras. It includes a micro spectrometer and is controlled with the iQ-LED control

software or via dip switches when not connected to a PC.

•Only suitable for indoor use.

•Place your system in a dry, constant tempered environment without light interference.

•The optimal ambient temperature range is 22 to 26 degrees Celsius. The maximum

ambient temperature range is 18 to 28 degrees Celsius.

•The optimal system temperature range, displayed in the software user interface, is

between 35 and 50 degrees Celsius. The system has internal temperature

management, if there is any error regarding the internal temperature, you will get a

warning message, and the system will automatically shut off to avoid any damage.

1.2.1 Departing from described setup

The following steps must be performed in the correct chronology to allow smooth commissioning.

Departing from the chronology may lead to an incorrect working device.

1. Install the iQ-LED software

2. Connect CAL3 to power and via USB to the PC

3. Switch CAL3 on; the system drivers will now be installed

4. After drivers are installed completely, start the software

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1.2.2 USB connection

Only an appropriate USB connection allows error-free operation of CAL3. Use delivered USB cables. If

you need to extend the USB connection to longer distances, please check if powered hubs/repeaters

are necessary.

1.3 General safety information

WARNING!

Some LEDs emit invisible light in the IR and UV near range.

•Do not look directly into the emitted light or the optical LED system.

•Do not look directly in the open sphere or light source when using high intensities or

sequences with low response time.

•Do not open the device without instructions from the Image Engineering support team

or when connected to the power supply.

2 GETTING STARTED

2.1 Scope of delivery

•Integrating sphere

•Spectrometer (built-in)

•Power cord

•USB cable

•Control software

•Calibration protocol

Optional equipment:

•iQ-Align for CAL3 for a quick and easy camera alignment.

•EX2spectrometer for external measurements.

iQ-Align for CAL3

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•iQ-Trigger: The iQ-Trigger is a mechanical finger that can press the shutter release

button within 25 ms. When working with touchscreens, exchange the solid fingertip for a

touch pen tip.

•iQ-Analyzer-X software (shading module)

This module includes a special chart layout file that allows the analysis of images with

and without a keyhole effect.

3 OPERATING INSTRUCTIONS HARDWARE

3.1 Overview display and ports

•1 x USB port for software control

•1 x port for power adapter

•1 x trigger output

Use the control panel to set different light settings for the iQ-LEDs:

•Use the “+” and “-“ buttons to switch between 44 saved illuminants

•The numerical display shows the storage of the illuminants

•With the play and stop button, you can start and stop a saved light sequence with

different illuminants (it is possible to save one sequence on the device)

•Use the power button to turn on and off the light

There are three pre-stored illuminants on your device (the intensity of each illuminant is shown in the

acceptance protocol of your device):

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•1: illuminant A (default illuminant)

•2: illuminant D50

•3: illuminant D75

Note: To store your generated illuminants or sequences on your device, please follow the iQ-LED SW

user manual instructions.

Wiring examples for the trigger output:

Trigger OUT wiring examples

The default duration value for the trigger output is 500 ms. This value can be modified with the iQ-LED

API. A signal is sent out to the trigger output while changing the illuminates or the intensity of LED

channels. It can be used to synchronize your test setup. For example, with an iQ-Trigger (see 2.1

optional equipment).

3.2 Connecting the hardware

1. Connect the power cord to the power supply on the back of CAL3.

2. Connect the USB cable to the CAL3 and your PC.

3. Turn on the CAL3; the power switch is next to the power supply.

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4. The system will install the spectrometer and iQ-LED drivers on your PC; this will take a few

seconds.

5. You can check the installation in your hardware manager.

Hardware Manager: active iQ–LED and spectrometer

3.3 Camera positioning

Requirements for your camera (device under test, DUT):

•Maximum lens diameter: 37 mm

•Minimum lens depth: 10 mm

Ensure:

•Your DUT is as close as possible to the CAL3 opening

•The lens is precisely in the middle of the diffuser

•The front surface of the lens is at least 10 mm inside the diffuser

•For lenses >= 160° FOV (field of view), it is recommended to bring the lens at least

20 mm inside the diffusor

Not fulfilling these requirements will lead to a nonuniform illuminated field of view. The easiest way to

align the camera correctly is to use the iQ-Align (sold separately, see 2.1).

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Positioning of DUT in front of CAL3

4 OPERATING INSTRUCTIONS SOFTWARE

4.1 Requirements

•PC with Windows 7 (or higher) operating system

•One free USB port

4.2 Software installation

Install the iQ-LED control software before connecting the hardware. Follow the setup instruction from

the iQ-LED control software manual.

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4.3 Starting the system

Start the iQ-LED software by clicking the ‘iQ-LED.exe’ or the iQ-LED icon on your desktop. Follow the

iQ-LED software manual to control the CAL3.

NOTE

The iQ-LED devices can operate with high precision only when setup and calibration are

performed correctly.

Consult the iQ-LED software manual for a comprehensive description, and read it carefully.

4.3.1 Spectrometer settings

The iQ-LED software (see iQ-LED software manual) automatically generates the best spectrometer

settings for your lighting conditions after pressing the “auto-detect” button. For special applications, it is

also possible to set the spectrometer settings manually. If you have further questions, please contact

the Image Engineering support team.

4.3.2 iQ-LED calibration

The individual LED lights of the iQ-LED inside the CAL3 depend on many different types and

wavelengths. Some LEDs will change their intensity level and peak wavelength slightly in the first 500-

600 working hours because of a burn-in effect.

The LEDs will also degrade in intensity during their lifetime. To ensure that all measurements,

including the auto-generated and the standard illuminants, are correct, you must perform a spectral

calibration regularly.

You must also consider the degradation of the LED when saving self-defined presets. Suppose you

save a preset with LED channels that uses its maximum intensity. In that case, the possibility exists

that this intensity cannot be reached after the burn-in time or the long-time degradation of the LED. In

this case, you will get a warning message from the iQ-LED control software.

During the first 500-600 working hours, we recommend performing a spectral calibration every 50

operating hours.

After the first 500-600 operating hours, a calibration of every 150 working hours suffices.

Other factors that indicate the need for a spectral calibration include unsatisfactory illuminant

generation or the aberration of the intensity values. In addition, a spectral curve that does not fit with

the predefined standard illuminants of the corresponding preset signals requires calibration.

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•The spectrometer works correctly

•The spectrometer settings are correct

•All LED channels work correctly

•The dark measurement is correct

•Your measurement environment is correct

•Your ambient temperature is correct

How to perform the spectral calibration is described in the iQ-LED control software manual.

4.4 Low-intensity use

When using your system with very low intensity, the spectral measurement values will start to

fluctuate. The lower the intensity, the higher the fluctuation. The generated light is still stable up to a

certain point. The fluctuation of the values is caused by the noise of the spectral measurement of the

internal spectrometer. The light intensity will continue to get lower when the influence of the noise

continues to get higher. When using standard illuminants with an intensity lower than 25 lux, it will no

longer be possible to get a correct value.

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