Lighting Technology

High performance, long-life machine vision and biometric lighting
PSI have utilised their 20 year experience to produce high performance, efficient and reliable near infrared (NIR) and visible LED lighting. This technology has been implemented to produce very successful biometric and machine vision lighting solutions. Using the very latest LED and heatsink technology, these lights offer a number of advantages. They are fully human eye safe, providing a high power, highly efficient flash that operates fully independent of ambient lighting conditions. Our light hardware is low voltage, long lasting, and robustly engineered to withstand harsh, heavy industrial environments.

Lighting Product Range

We produce a range of lighting technologies depending on the required application. The range is highlighted below:  

Near Infrared (NIR) Lighting

Our NIR lighting can illuminate a large range surfaces evenly, independent of ambient lighting conditions, ideal for surface inspection or biometric detection.  

NIR Line Projection

Our eye safe NIR line projector can assist in 3D dimensional analysis and also help to highlight surface defects, flatness, bulges or holes, without the need for laser technology.

Visible Lighting

Our visible LED lighting can illuminate a surface evenly in colour space analysis, and can be paired to aid automated visual inspection and colour defect detection.


Our lighting can be paired with numerous accessories to include advanced light triggering hardware or cooling solutions for high temperature environments.

Standard Features

We offer a number of features with our lighting technology, all of our lights contain the below abilities to increase usability:

Communications and Signal Synchronisation

The 12pin connector facilitates power, RS485 communications and synchronization
signals, enabling the easy integration of PSI lighting solutions into systems of varying complexity.

Brightness and Lighting Intensity Control

Each lighting module has 12bit adjustable current setting capability allowing for 4096 different brightness settings. The current can be rapidly adjusted either using RS485 communications or a dedicated 2 pin clock and data to choose from 15 programmable pre-sets. This enables changes of lighting intensity on a frame by frame basis.

Temperature Monitoring and Control

Built in temperature monitoring and pulse width modulation (PWM) fan control, enables enhanced active cooling in demanding applications without the need for additional control and monitoring equipment.

Unique Device Identification and Configuration

Contains a unique device ID allowing each light to be identified. Non-Volatile Memory (NVM) enables
the saving of the module configurations.

Voltage Monitoring and Adjustment

PSI lighting modules have built-in monitoring and voltage adjustment, to keep the lighting as efficient as possible and while also being reactive to the effects of component aging.

Robust, long-life components

Designed to be used within a variety of environments, the lighting is robust and proven, operating 24/7 within heavy industrial environments. Light components have been selected for reliability, robustness and long life operation. 

Perception Sensors and Instrumentation Ltd

A leader in bespoke biometric hardware and machine vision solutions