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Imager Field of View and Resolution
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Rev 2.0.0, Jan 2009
HawkEye™ 40T User Manual
1-31
Imager Field of View and Resolution
The HE40T’s megapixel imager, with a dual field optical system, can provide
you the best image for 1-D and 2-D applications.
The 1.3 Million Pixel imager is divided into near field and far field decode zones.
In each zone, the resolution is 1024 x 640 pixels (see Figure 1.25). In this mode
of operation the reader utilizes the highest resolution creating the widest working
range on bar code and 2-dimensional symbols of all densities. The trade-off is the
amount of time the reader spends processing the image. This time can be reduced
by optimization functions:
•
If only the near field is used (small, high density symbols), the far field
image can be ignored.
•
If only the far field is used (large, lower density symbols), the near field can
be ignored.
•
Further optimization may be obtained by “windowing” the field to a smaller
area.
FIGURE 1–39.
SXGA Imaging Area
1024
640
640
Far
Near
Содержание HawkEye 40T
Страница 1: ...HawkEye 40T User Manual EM 20954 1V200 Rev 2 0 0 Jan 2009...
Страница 4: ......
Страница 42: ...Chapter 1 Getting Started 1 32 HawkEye 40T User Manual Rev 2 0 0 Jan 2009 FIGURE 1 40 Imager Focal Lengths...
Страница 48: ...Chapter 2 Optimization and Trigger Programming 2 6 HawkEye 40T User Manual Rev 2 0 0 Jan 2009...
Страница 62: ...Chapter 4 Department of Defense Unique Identification UID 4 6 HawkEye 40T User Manual Rev 2 0 0 Jan 2009...
Страница 70: ...Chapter 6 Advanced Decoder Performance 6 2 HawkEye 40T User Manual Rev 2 0 0 Jan 2009...
Страница 78: ...Chapter 8 Maintenance and Troubleshooting 8 4 HawkEye 40T User Manual Rev 2 0 0 Jan 2009...
Страница 90: ...Appendix B Certification and Specifications B 6 HawkEye 40T User Manual Rev 2 0 0 Jan 2009...