ESPROS Time-of-Flight Imaging

ESPROS Photonics enables Range Finding solutions based on the principle of Time of Flight (TOF). The solutions excel in applications requiring ranging distances from approximately 20 cm to 10 m.

ESPROS offers a range of TOF Imager Chips and Modules including 1x1, 8x8, 160x60 and 320x240 pixel array formats. ESPROS' unique technology offers both photonics and mixed signal circuitry on one chip, giving outstanding optical detector performance.

Check out this new video on the ESPROS website demonstrating facial recognition/capture using the ESPROS imagers

Design support is available including a sample schematic diagram, low level software which operates the chip and outputs distance data, and calibration and compensation algorithms. Contact Pacer for details.

epc611

The epc611 chip is a general purpose, monolithic, fully integrated photoelectric CMOS device for optical distance measurement and object detection.

Various modes allow operation of the chip as a very fast one-pixel range-finder chip, as fast one-pixel range-finder chip with low distance noise, and as 8 x 8 TOF imager chip.
  
Please contact us for the latest datasheet as a new revision is due.
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epc635

The epc635 is a fully integrated 3D-TOF imager with a resolution of 160 x 60 pixels (Half-QQVGA). As a system on chip, the epc635 contains, next to the CCD pixel-field, the complete control logic to operate the device.

The epc635 has a pixel size of 20 x 20 um and max TOF frame rate of  122/488 fps

epc660

The epc660 is a fully integrated 3D-TOF imager with a resolution of 320 x 240 pixels (QVGA). It is a highly integrated system-on-chip camera system. Apart from the actual CCD pixel-field, it includes the complete control logic to operate the device.

The epc660 has a pixel size of 20 x 20 um and max TOF frame rate of 64/256 fps

TOF RANGE 611

TOF>range 611 is a TOF range-finder module based on the epc611 chip. It allows distance measurement in a very cost effective design from a few centimeters up to several meters. The firmware is built to operate in a high dynamic range of up to 90dB. However, the lens is designed with aspheric lenses in order to reduce the required dynamic range as much as possible. A high dynamic range can be used even with a high measurement rate. The TOF>range 611 comes fully calibrated, in a lightweight but very stable plastic frame which allows it to be mounted to a fast rotating turnable.

TOF CAM 635

The TOFCAM 635 is a new design of a miniaturized and cost optimized 3D camera able to take and process more than 10 HDR depth images per second in full resolution, compensated against ambient light, temperature and reflectivity of the scene. The system can work under full sunlight conditions, and outputs depth and greyscale images, enabling a direct jump into the latest technology of 3D depth sensing. All the complicated tasks around optics, illumination and signal processing are already solved.

TOF CAM 660
The TOF>cam 660 is a cost optimized 3D camera, based on the ESPROS proprietary time-of flight technology using the epc660 TOF flagship chip. The camera controls the illumination and the imager chip to obtain distance and grayscale images - these depth and grayscale images enable a variety of new applications such as mobile robotics. This module brings you the latest technology for 3D depth sensing; all the complex engineering and time consuming design tasks regarding optics, illumination and signal processing are already solved.
TOF Frame 611

TOF>frame 611 is an 8x8 pixel TOF imager module based on the epc611 chip. It allows basic gesture control and distance measurement in a very cost effective design from a few cm up to 2m. A high dynamic range can be used even with a high measurement rate of up to 80 TOF fps (4x DCS + 1 temperature image). The TOF>frame 611 comes fully calibrated, so the user can simply readout the clean distance data per pixel. The data interface is a standard Rx/Tx UART with 1 Mbit/s data rate.

Calibrating Time-of-Flight Cameras

ESPROS have released a white paper, with corresponding application note, detailing error sources for Time of Flight (TOF) Cameras and how to compensate for them.