摘要:
An optical switch uses a polarization insensitive spatial light modulator operating by a double pass through a liquid crystal cell. The switch includes two such modulators in a cross bar arrangement. Different embodiments employing techniques for reducing cross talk are described.
摘要:
An optical switch uses a polarisation insensitive spatial light modulator operation by a double pass through a liquid crystal cell. The switch includes two such modulators in a cross bar arrangement. Different embodiments employing techniques for reducing cross talk are described.
摘要:
A network-based contact management system provides various features for assisting users in locating, and sharing information with, other users. The system provides a web-based user interface through which each may user create a personal data record, establish contact relationships with other users, and specify permissions for allowing such other users to view the user's own personal data. Users can preferably view the personal data records of their respective contacts via personal address books in accordance with the permissions granted by such contacts. A search feature enables each user to search for contacts of that user's own contacts to locate other users of interest. A crossing paths notification feature notifies users when their travel plans coincide with those of their contacts.
摘要:
Solder is deposited on a printed circuit board by melting the solder in a container. The container has a slot for passage of solder, therethrough and control means actuable to alternately allow and prevent passage of solder through the slot. The slot is placed in contact with a stencil and the control means is actuated to allow passage of solder through the slot. The stencil is moved relative to the container in a direction transverse of the slot to deposit solder on the printed circuit board via the stencil.