The present invention provides a piezoelectrically driven optical lens module. The improved source collimator utilizes a larger collimation angle than has previously been used in the art. The announcement may be tailored by changing the language of the announcement, for example, to conform to the majority of calls received by the called party. This particulate filter is created by gathering tips of the partition walls and then baking with the adjacent partition walls being in contact with each other. A second collection of simulated measurements is generated, which is statistically independent to the first collection. Accordingly, working efficiency can be improved since the test process is simplified and refined.