What field-of-view (FOV) options are available for the DP300?
Is the sensor technology CCD or CMOS?
Do I need to mount the DP300 on a tripod to have it work properly?
How does the sensor measure object range?
Are there lasers in the light source illuminator?
Is the DP300 eye-safe?
How do the shutter time and frame rate relate to each other?
What are typical values for frame rate and shutter time to measure the range of a human at about 1.5m?
What is the maximum light source optical power that the DP300 can illuminate a scene with?
How does the DP300 perform in high ambient light (i.e., bright sunlight)?
What is the maximum temperature of the camera?
The available FOVs are 81° (H)x 104° (V), 30° (H)x 39° (V), and 88° (H)x 114° (V). (all are in portrait orientation).
The sensor is made using a standard CMOS process.
No, a tripod is not necessary to use the DP300. It can be placed directly on a tabletop. Our experience shows that using a tripod allows more maneuverability. Because of the FOV, putting the DP300 on a tabletop will usually image part of the table.
The sensor measures the distance to an object by using a time-of-flight (TOF) principle. A modulated light source signal illuminates the target. The distance to the target is proportional to the phase shift of the reflected light that is detected at a pixel. For more information, click here for this patent.
No, the DP300 uses an LED array providing up to 5W (peak) of eye-safe (Class 1) IR light at 870nm.
Yes, the DP300 is rated at a Class 1 safety rating, which is eye-safe.
The maximum frame rate is typically the inverse of the shutter time (plus some overhead related to data transfer time). However, the shutter time and frame rate can be set independently, as long as the frame rate is set to any value less than the maximum frame rate for a given fixed shutter time. To experiment with different shutter speeds and frame rates use the EP Toolkit application (included with the DevKit). Note that this tool limits that screen refresh time to 30 fps even if the theoretical frame rate can be higher than this value.
You can use the EP Toolkit to experiment with human and other targets at different ranges. You can vary the shutter speed, frame rate, light source power and ambient light rejection (see CMR below) parameters to obtain an optimal value for your experiment. Also, note that an application, using EP SDK, can vary these parameters in real-time according to the changing circumstances of the target.
The maximum light source optical power that is produced is 5W (Watts). The power of the light source may be controlled using the EP Toolkit application or the software development kit (SDK).
The DevKit uses a technology called Common-Mode Reset (CMR) to reduce or eliminate the effects of ambient light on the range image. It has been proven to reduce even the effects of direct sunlight on an object and result in an accurate object range. For more information, check Sunlight Resilience.
The maximum operating temperature of the DP300 is + 40°C.
