5
Optics
Window Placement
The window should be positioned properly to let the illumination and aiming beams pass through as much
as possible and no reflections back into the engine (reflections can degrade the reading performance).
The window should be mounted close to the front of the engine (parallel). The maximum distance is
measured from the front of the engine housing to the farthest surface of the window. Avoid unwanted
reflections and use thin material for window so as to reach better reading performance. As shown in Fig.
2-2, the distance from the front of the engine housing to the furthest surface of the window should not
exceed 3mm and the distance from the front of the engine housing to the nearest surface of the window
should not exceed 2mm.
Fig. 2-2
If the window is required to be in a tilted position, the above distance requirements should be met and tilt
angle should ensure no reflections back into the lens.
Summary of Contents for EM2039 Series
Page 1: ...EM2039 Series OEM Scan Engine Integration Guide ...
Page 3: ...Revision History Version Description Date V1 0 0 Initial release May 21 2013 ...
Page 6: ......
Page 13: ...7 Illumination Aiming Fig 2 3 Fig 2 4 ...
Page 16: ...10 Bottom View Fig 2 8 Top View Fig 2 9 ...
Page 17: ...11 Imager Discrete Type unit mm Front View Fig 2 10 Bottom View Fig 2 11 Top View Fig 2 12 ...
Page 18: ...12 Right View Fig 2 13 Decoder Board Discrete Type unit mm Front View Fig 2 14 ...
