6
Window Material and Color
Wavelengths of illumination and aiming beams should be taken into consideration when choosing window
material and color, to achieve the possible highest spectral transmission, lowest haze level and
homogeneous refractive index. It is suggested to use PMMA or optical glass with spectral transmittance
over 90% and haze less than 1%. Whether to use an anti-reflection coating or not depends on the
material and application needs.
Scratch Resistance and Coating
Scratch on the window can greatly reduce the performance of the EM2039. It is suggested to use
abrasion resistant window material or coating.
Window Size
The window must not block the field of view and should be sized to accommodate the aiming and
illumination envelopes shown below.
Содержание EM2039 Series
Страница 1: ...EM2039 Series OEM Scan Engine Integration Guide ...
Страница 3: ...Revision History Version Description Date V1 0 0 Initial release May 21 2013 ...
Страница 6: ......
Страница 10: ...4 Installation Orientation Fig 2 1 illustrates a front view of the EM2039 after installation Fig 2 1 UP ...
Страница 13: ...7 Illumination Aiming Fig 2 3 Fig 2 4 ...
Страница 16: ...10 Bottom View Fig 2 8 Top View Fig 2 9 ...
Страница 17: ...11 Imager Discrete Type unit mm Front View Fig 2 10 Bottom View Fig 2 11 Top View Fig 2 12 ...
Страница 18: ...12 Right View Fig 2 13 Decoder Board Discrete Type unit mm Front View Fig 2 14 ...
Страница 19: ...13 Back View Fig 2 15 Right View Fig 2 16 ...