Bar Light

2019/04/18

BA

Bar Light
Bar Light

Bar lights can be used to apply a strip of light along a target edge. Depending on the angle of the light and the camera, the bar light can be used to enhance or reduce specular reflection from a target. For highlighting a feature with specular reflection (such as the tip of a pin) the direct reflection of light has to come back into the camera. For removing specular reflection (sometimes referred to as hotspots) the direct line of reflection needs to be away from the camera. Here are some examples of applications for this type of light and their comparison in the following images:

With bar lights

The edge has a high contrast and is clearly defined.
The edge has a high contrast and is clearly defined.

With standard lighting

Plastic parts on a conveyor
The edges of the plastic part are unclear.
Uniform illumination of the print is possible.
Uniform illumination of the print is possible.
Hotspots occur due to the target shape.
Hotspots occur due to the target shape.
Only the connector tip is highlighted.
Only the connector tip is highlighted.
There is no contrast between the terminal tip and the connector’s molded surface.
There is no contrast between the terminal tip and the connector’s molded surface.

In the video below, you can see an example of this series of lights:

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