Sensing
Laser Sensors - High Accuracy Displacement
Automatic movement measurement is a key function in many consumer and professional systems, often determing the cost and quality of the system’s output. In most systems, like industrial production lines or printers, movement measurement of the medium is done in a mechanical way, using drums measured by encoders. This method has two disadvantages. Firstly, it is relatively inaccurate. This is mainly because it is an open-loop system which measures displacement at the position of the drum, rather than directly on the object. Secondly, this method is relatively bulky, preventing devices with smaller form factors to be made. Although this electro-mechanical movement measurement is cost efficient for the simpliest systems, it is significantly limiting the quality and total cost of ownership of more high-end systems.
Philips Photonics has developed innovative movement sensors that overcome the abovementioned disadvantages. These sensors combine a very small form factor with a very high tracking accuracy, enabling closedloop movement systems in a cost- and size efficient way.
Key product features:
- Accuracy up to 0.1% for consumer applications (ASIC based)
- Accuracy up to 0.01% for professional applications (FPGA based)
- Works on virtually all surfaces
- Accurate displacement measurement up to 20 m/s
- Sensor resolution up to 25,400 CPI
- High speed, low latency interface
- RoHS compliant
Main application domains are:
- Printing and scanning applications
- Flow sensors
- Industrial sensors
