Conventional high speed camera systems are bulky and expensive and mainly used for liquid drop research and analysis, which is not applicable for in line real time monitoring. As a result, precision dispensing control normally use micro scales to calibrate dispensing volume for consistent dispensing purpose. . However ,micro scale is not efficient neither accurate enough besides the incapability to check liquid drop volume variations . To enhance the dispensing system precision , real time liquid drop volume measurement capability is the way to go . 

With this understanding, Droptical research team spent years of efforts to develop the most advanced liquid drop optical inspection technology. Droptical technology integrates a miniaturized  camera system enabling camera system attachable right to the jet valve nozzle for near sight surveillance and inspection.

With the special developed software, Droptical optical inspection system is able to detect every signal drop volume and speed up to 200 hz/sec or even higher . Real time drop volume measurement capability makes it possible to check if drop volume is out of the specification and subsequently calibrate the drop volume automatically through feedback signal to jet valve to ensure consistency of dispensing volume. 

Consistent dispensing problems can happen because of several factors including unstable air pressure,air bubbles in material deteriorated piezo stack or poor quality nozzle ending up glue residue sticking at the end of jet nozzle . Droptical optical inspection system is also able to measure the residue volume sticking to the nozzle for inconsistent dispensing warming . 

In micro electronics, satellite drop is a crucial issue for high speed high frequency circuits boards . Droptical optical inspection systems can also measure the drop jetting angle while checking the drop volume simultaneously and predict the potential dispensing satellite problems. 

Since Droptical optical inspection system is designed for in line application, Droptical optical inspection camera can be lifted up automatically from jet nozzle to keep on using existing nozzle clean station due to very small size . There is no concern for customers using fully automatic dispensing machines with automatic nozzle cleaning station . 

Droptical optical inspection system is not limited to liquid drop measurement and inspection for industrial market . The technology can also be use for bio or medical dispensing . It can be used for bonding process surveillance as well . 
Droptical optical inspection technology is versatile for different applications because of compact size , low cost and powerful software support. 

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