Photon Focus MV-D1024E-3D01-160, User Manual

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Simultaneous readout (interleave exposure):
To achieve highest possible frame rates, the camera must be set to "Free-running mode" with
simultaneous readout. The camera continuously delivers images as fast as possible. Exposure
time of the next image can start during the readout time of the current image.
e x p o s u r e n i d l e
i d l e
r e a d o u t n
e x p o s u r e n + 1
r e a d o u t n + 1
f r a m e t i m e
r e a d o u t n - 1
Figure 4.4: Timing in free-running simultaneous readout mode (readout time > exposure time)
e x p o s u r e n
i d l e r e a d o u t n
e x p o s u r e n + 1
f r a m e t i m e
r e a d o u t n - 1 i d l e
e x p o s u r e n - 1
Figure 4.5: Timing in free-running simultaneous readout mode (readout time < exposure time)
When the acquisition of an image needs to be synchronised to an external event, an external
trigger can be used (refer to Section 4.6 and Section 5.4). In this mode, the camera is idle until
it gets a signal to capture an image.
Figure 4.6: Timing in triggered simultaneous readout mode
4.1.2 Exposure Control
The exposure time defines the period during which the image sensor integrates the incoming
light. Refer to Table 8.1 for the allowed exposure time range and see Section 5.4.1
4.1.3 Maximum Frame Rate
The maximum frame rate depends on the exposure time, the readout scheme and the size of
the image (see Region of Interest, Section 4.5.1). In most cases, simultaneous readout is best
choice for highest framerate.
4.1 Image Acquisition 21