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1M28 and 1M75 User's Manual
1.5 Spectral Responsivity
Figure 9: 1M28-SA and 1M75-SA Spectral Responsivity
The cameras are shipped without any filters. The quantum response is only limited by the
physics of silicon in manufacturing technologies. This permits applications in the near UV
as well as in the IR Band. For classical visible applications, consider the use of IR stop
filters to increase the sharpness of the images since commercial lenses often cannot
provide proper focalization over such a large spectrum.
Note: Although not shown, the cameras are responsive to light from 380 to 1100nm.
1.6 Region of Interest (ROI)
The CMOS sensor allows you access to subregions of the pixel matrix through the region
Note: To set the ROI,
of interest function. The benefit of limiting the region of interest is the resulting increase
refer to Chapter 3.
in frame rate.
Software Interface:
In Y direction the ROI can be placed arbitrarily, and can be as small as a single line. The
Controlling the Camera.
frame rate increases linearly with a reduction in lines read out.
In X direction the ROI must include at least 4 columns for the 1M28 camera and at least 8
columns for the 1M75. If this condition is respected, the speed increase in column
direction is also linear to the reduction in read out columns.
Theoretically, the smallest ROI is 4 columns x 1 row for the 1M28, and 8 columns x 1 row
for the 1M75.
Table 3: Max Frame Rate versus Resolution (Exposure Time = 10µs)
ROI Dimension (col x line) 1M28
512 x 512
256 x 256
128 x 128
128 x 16
DALSA
PRELIMINARY
105 Fps
411 Fps
1587 Fps
11111 Fps
1M75
286 Fps
1070 Fps
3700 Fps
22000 Fps
15
03-32-00525-03
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