HOW TO SOLVE COMPLICATED

ILLUMINATION SET UPS >

Learn more about intelligent lighting | Part 2

Read more
Innovative camera features

GET MORE OUT OF YOUR GIGE

VISION SYSTEM ARCHITECTURE >

Learn more about two great innovative camera features

Read more

LINE SCAN BAR >

Fast and precise, flat and wide

Read more

Angle of illumination

Probably the most important factor that governs how the captured image appears is the angle at which the light falls on the target.

There are two major lighting areas as shown in the diagram, 'front lighting' where the light originates from the same side as the camera, and 'backlighting', where the light source is situated behind the target.

The techniques are summarised below:

Front light illumination:

Backlight illumination:

To understand the terms bright field and dark field, we replace the test object by a perfect plain mirror. Bright field refers to any illumination where the light rays from the source are reflected from the mirror directly into the lens. Dark field refers to any illumination where the light rays are not reflected into the lens, but only a proportion of light that is scattered by an uneven surface.

These main illumination techniques can be achieved using different products.

More illumination methods:


Learn more: