Specifications

MOUNTING SPECIFICATIONS

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.

• The output window should have a 60-40 surface quality, be optically flat,

clear, and free of scratches, pits, or seeds. If possible, recess the window

into the housing for protection or apply a scratch resistance coating (see

Output Window Coatings below).

• Apply an anti-reflective coating to the window surfaces to reduce the

possibility of reflective light interfering with the engine’s performance.

• The clear aperture of the output window should extend beyond the

50° Field of View (see page 34).

• The window size must accommodate the illumination and targeting areas

shown on page 17.

• 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 must not exceed 2 mm (0.08") due to possible specular

reflections from internal area illumination.

Output Window Coatings

• Anti-Reflection

An anti-reflective coating can be applied to the inside and/or outside of the

window to reduce the possibility of internal beam reflections interfering with

the performance of the engine. If an anti-reflective coating is applied, the

coating is recommended the coating be on both sides of the window

providing a 0.5% maximum reflectivity on each side from 600 - 700

nanometers at the nominal window tilt angle. The coating must also meet

the hardness adherence requirements of MIL-M-13508.

• 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 anti-reflective coating is used, there is no need to apply a

polysiloxane coating.