SVS-VISTEK
Feature-Set
47
Flashing with Rolling Shutter
Scanning sensor lines takes time, an scanning time. There are 2 general
options for flashing:
1.
Make sure your flash is ON and stable the whole period of time
while scanning/exposing. Minimum flash time is scanning time
plus exposure time. In this case, while flashing you will get
geometric distortions as mentioned above. Exposure will be
determined by camera exposure time and light intensity
2.
If flash time is less than scanning time then exposure time has to
be at least scanning time + flash time, with a delay of scanning
time. In other words, your exposure time will be scanning time
plus flash time, while you use a flash delay of scanning time.
Thus flash release will start after the delay of scanning time, as
soon the sensor is fully open. You should keep the object in total
darkness while the first scanning time.
In this case, as all lines are sensitive to light at the same time
after the first scan time, flashing time can be as short as you like.
You will not see the typical geometric rolling shutter distortions as
shown above. Imaging will be similar to global shutter. Exposure
will be determined by flash time/intensity.
Figure 14: Rolling shutter lines light sensitivity versus time
As shown here, after triggering only part of the sensor is sensitive to light
(scanning time). As soon as scanning time has finished, all pixels are
sensitive to light, the sensor is fully open. While being fully open this is the
time where flashing should happen. In the final scanning time, less and
less pixels are sensitive to light until the sensor light sensitivity will finish.
Flashing of rolling shutter sensors is significantly different to global shutter
flashing!
Содержание EXO Series
Страница 5: ...Contents v 13 Index of figures 139 14 Index 142 ...
Страница 15: ...SVS VISTEK Getting Started 15 Installation will proceed 8 Installation completed ...
Страница 17: ...SVS VISTEK Getting Started 17 Conform to GenICam all control features will be listed in a flat tree diagram ...
Страница 19: ...SVS VISTEK Getting Started 19 4 4 Driver Circuit Schematics Figure 5 basic Illustration of driver circuit ...
Страница 23: ...SVS VISTEK Dimensions 23 6 1 exo174 U3 exo249 U3 ...
Страница 24: ...SVS VISTEK Dimensions 24 ...
Страница 25: ...SVS VISTEK Dimensions 25 ...
Страница 26: ...SVS VISTEK Dimensions 26 ...
Страница 27: ...SVS VISTEK Dimensions 27 6 2 exo4000 U3 front side Left ...
Страница 28: ...SVS VISTEK Dimensions 28 Side Right Top ...
Страница 29: ...SVS VISTEK Dimensions 29 Bottom Back ...
Страница 30: ...SVS VISTEK Dimensions 30 Cross Section ...
Страница 31: ...SVS VISTEK Dimensions 31 6 3 exo183 U3 exo250 U3 exo252 U3 exo264 U3 exo265 U3 front side Left ...
Страница 32: ...SVS VISTEK Dimensions 32 Side Right Top ...
Страница 33: ...SVS VISTEK Dimensions 33 Bottom Back ...
Страница 34: ...SVS VISTEK Dimensions 34 Cross Section ...
Страница 35: ...SVS VISTEK Dimensions 35 6 4 exo255 U3 exo267 U3 ...
Страница 36: ...SVS VISTEK Dimensions 36 ...
Страница 37: ...SVS VISTEK Dimensions 37 ...
Страница 38: ...SVS VISTEK Dimensions 38 6 5 exo253 U3 exo304 U3 ...
Страница 39: ...SVS VISTEK Dimensions 39 ...
Страница 40: ...SVS VISTEK Dimensions 40 ...
Страница 63: ...SVS VISTEK Feature Set 63 ...
Страница 69: ...SVS VISTEK Feature Set 69 Figure 38 I O Lines with open end indicate physical in and outputs ...
Страница 79: ...SVS VISTEK Feature Set 79 Strobe Control Example Setup Figure 43 Illustration of an application using the 4IO ...
Страница 103: ...SVS VISTEK Specifications 103 Spectral sensitivity characteristics Figure 62 IMX249LQJ Figure 63 IMX249LLJ Color Mono ...
Страница 109: ...SVS VISTEK Specifications 109 Figure 67 IMX252LLR Mono ...
Страница 112: ...SVS VISTEK Specifications 112 Spectral sensitivity characteristics Figure 68 IMX253LQR Figure 69 IMX253LLR Color Mono ...
Страница 115: ...SVS VISTEK Specifications 115 Spectral sensitivity characteristics Figure 70 IMX255LQR Figure 71 IMX255LLR Color Mono ...
Страница 118: ...SVS VISTEK Specifications 118 Spectral sensitivity characteristics Figure 72 IMX264LQR Figure 73 IMX264LLR Color Mono ...
Страница 121: ...SVS VISTEK Specifications 121 Spectral sensitivity characteristics Figure 74 IMX265LQR Figure 75 IMX265LLR Color Mono ...
Страница 124: ...SVS VISTEK Specifications 124 Spectral sensitivity characteristics Figure 76 IMX267LQR Figure 77 IMX267LLR Color Mono ...
Страница 134: ...SVS VISTEK Troubleshooting 134 Space for further descriptions screenshots and log files ...