We can supply customised LED modules, area light, spots, backlight, etc. – to fit each client’s application.
When designing a lighting system, we establish whether the front or backlight is more suitable and find the ideal angle at which the light falls on the object surface. This may be the most important task, as it governs how a captured image will appear. In this regard, the two important subgroups of front and backlight illumination – bright field and dark field illumination – is considered.
The lighting is either driven directly from the camera or using our external LED controller box that supports up to 8 individual LED strings and up to 1 A configurable per string – in a constant current drive up to 75 V per string.
Each channel can be programmed for different settings, to a minimum and a maximum LED on times and maximum duty cycle. Moreover, overlaying pulsing of the LEDs can be activated to remove unwanted flickering of light.
The luminous flux produced by an LED increases almost linearly with the current. Hence, we recommend using a current controlled LED controller to control the current through the LED’s and not the voltage, so that the light is stable, tightly controlled and repeatable.
Contact us now for questions or further information in regards to specific machine vision illumination needs.