Entities (Objects) > Bitmap

At the marking process, the

scale value of the scanner bitmap will correspond to the laser power. That is why the grayscale adjusting can be used for fine-tuning your mark result and consider non linear behavior of the laser and the material. The brightness and the intensity can be changed for the original bitmap in the bitmap property page. After that the grayscales of the scanner bitmap can be adjusted via two different pixel maps:

Scanner Bitmap

(entity property)

The original scanner bitmap grayscales will be adjusted by the pen pixel map first and afterwards by the system pixel map again like you can see in the following flow chart:

•Pen PixelMap (useful to consider material behavior)
Before marking every grayscale bitmap which is assigned to this pen will be changed by this pixel map.

•System PixelMap (useful to consider general laser settings like minimum power)
Before marking every grayscale bitmap will be changed by this pixel map.

•Power Map is not used for gray scale marking at all.

Pen PixelMap

(pen property)

System PixelMap

(global setting)

Laser

(PWM or AM)

Table 33: Order of grayscale adjustment

The following points need to be considered if you mark grayscale bitmaps while using Optic3D.

•Grayscale bitmaps are always output at Z=0

•Using a 2D UCF, the Z lookup table and an F-Theta lens you can mark grayscale bitmaps at Z=0.

•Without an F-Theta lens marking grayscale bitmaps will only work with an USC-3.

Black and White Bitmaps can be marked without issues using Optic3D.

When using Flatlense (Optic3D disabled - Field flattening trough 3D-ucf) bitmaps can be marked without issues.