Output Window Properties
An improperly placed window has the serious potential to reduce the imaging engine’s performance. Careful consideration must be made when designing the output window’s distance and angle relative to the imaging engine’s camera aperture.
Follow these guidelines when designing the output window.
•The output window material should have a spectral transmission of at least 85% from 580 nm to 680 nm and should block shorter wavelengths.
•It should have a
•Apply an
•The clear aperture of the output window should extend beyond the Field of View. Refer to page 10 and pages 20 - 21 for Field of View specifications.
•The window size must accommodate the illumination and targeting areas shown on page 10.
•The window must be parallel to the engine face.
•The distance from the engine face to the inside surface of the window of the enclosure should be minimized and should not exceed 0.5 mm (0.02") due to possible specular reflections from internal area illumination.
Output Window Coatings
•
An
0.5% maximum reflectivity on each side from 600 - 700 namometers at the nominal window tilt angle. The coating must also meet the hardness adherence requirements of
•Polysiloxane Coating
Applying a polysiloxane coating to the window surface can help protect the window from surface scratches and abrasions that may interfere with the performance of the engine. Recessing the window into the housing can also provide added protection against surface damage such as scratches and chips. If an
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