User`s manual

F@ure 6.19 Object image With Saturated Background Luminance

Inspected object 1 r’

Saturated background

luuduance

luminance

3ff

Specular reflections; bright areas on object - Lighting

compensation always bases its adjustments on the

difference between the background part of the image and

the peak “amplitude” of the object. Thus, when using a

dark object on a light background, if any part of the object

image is brighter than the background luminance (because

of a white spot or reflection), lighting compensation uses

the brighter area as the basis for its adjustments.

When using a light object on a dark background, if any part

of the object image is brighter than the object, (because of a

white spot or reflection), lighting compensation uses the

brighter area as the basis for its adjustments.

In either case, the reflection or bright area may prevent the

SLS from maximizing the difference between the

background luminance and the inspected object, and, as a

consequence, achieving the maximum edge detection

capability.

Briefly, the SLS staging and setup procedure for managing

this situation involves these main steps:

1. Select an appropriate configuration record (set to

“Teach Mode”) from the Configuration Menu and

download the configuration to the SLS using the Send

option.

2. Select the View Image option in the Configuration

Menu.

3. Set the lighting compensation to “On.” At this point,

the image may appear as shown in Figure 6.20 on page

6-25.

4. Place a mask, or non-reflective material, over the

bright area on the inspected object. The image should

now appear as shown in Figure 6.21 on page 6-25.

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