Posted in | Machine-Vision

LED Light Manager for Multispectral Imaging Solutions

The LED Light Manager (LLM) has the ability to drive as many as four separate lights, including almost all types of lights. The LLM can also drive quadrants or four different channels within a built-in photometric or multispectral ring light solution.

Each individual program can accommodate as many as four sequences with up to four lights. These lights can be set at either continuously ‘on’, ‘off’, or any intensity level between the two. An OverDrive™ strobe mode is also included.

By linking the LLM to a computer using an Ethernet cable, and using the browser-based interface to program the light through a series of drop-down menus, users can program four individual LED light sources, or the four quadrants of a single LED illumination system, for example, a ring light.

Through the intuitive user interface, technicians of any skill level can set program intensities and image sequences for each light.

2D multi-light and 3D photometric stereo applications will be the initial target of the LLM system and light kit bundles. The lighting system can solve formerly intractable tasks when it is utilized in tandem with dedicated photometric stereo software from Cognex, Matrox Imaging, TeleDyne DALSA, MVTec ort SICK.

An instance of such a task is the ability to detect a defect in a part surface. This is achieved by the photometric image processing software by capturing successive images of a stationary object while it is lit up by a series of lights. In doing so, it establishes the 3D surface orientation of each pixel on the object surface. By using separate lights and/or cameras, this same method is able to create 2D images of different regions of interest.

LLM can also be used for multispectral imaging solutions, where LED wavelengths (not broad-spectrum white lights with optical filters before the sensor) are the spectral band selection mechanisms.

By using illuminating light’s color as the spectral band selection mechanism, the cost of multispectral imaging solutions can be considerably reduced. As a result, the budgets for imaging applications are increased.

Product Specification

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Electrical Input 24 V DC +/- 5%
Electrical Input Connector 2 position screw terminal block — 14 AWG max wire size
Operating Current (No Load) 70 mA
Number of Input
8 (Including 1 input channel with interrupt capability)
Input Connector 8 position screw terminal block — 14 AWG max wire size
Max Input Channel Voltage 26 V
On / Off Trigger Input PNP mode: +4 V DC or greater to activate (max 26 V DC)
NPN mode: GND (<1 V DC) to activate
Input Channel Current PNP Line: 4 mA @ 4 V DC | 10 mA @ 12 V DC | 20 mA @ 24 V DC
NPN Line: 15 mA @ Ground (0 V DC)
Output Channels 4 channels for lights plus 2 additional outputs, such as a camera trigger
Output Connectors 4 5-pin M12 connectors
10 position screw terminal block – 14 AWG max wire size (configurable for NPN or PNP)
Output Current
(Per Channel)
PNP (sourcing): 65 mA
NPN (sinking): 65 mA
M12 Connector
(Per Channel)
Continuous mode: 1.85 A (polyfuse protected)
OverDrive™: 10 A — 10% duty cycle (polyfuse protected)
Total Current: 8 A (polyfuse protected)
Analog Output
(Per Channel)
Voltage: 1–10 V DC, continuous mode intensity control
Current: 0.5 mA max (with fault protection)
Slave Mode Selectable and configurable with dip switches
Indicator Lights Power on = Green light
Ethernet = 2 indicator lights
Protection Circuitry Polyfuse protection
Programming Connector Ethernet port
SD Card microSD card
Reset Button Hold down for 3 seconds
Mounting DIN rail
Dimensions H = 120 mm (4.7"), L = 107 mm (4.2"), W = 45 mm (1.8")
Ambient Temperature -18º–40 ºC (0º–104 ºF)
Ambient Humidity 0–95% non-condensing
Weight ~233 g
Compliances CE, RoHS
Terminal Blocks
(Included with LLM)
2 connector terminal block
8 connector terminal block
10 connector terminal block

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