Abstract: Systems and methods are provided, which use at least two coherent light sources with known phase relations between them, which are configured to illuminate a target with at least two corresponding spots, an optical unit comprising a mask and configured to focus, onto a sensor, interfered scattered illumination from the spots of the target, passing through the mask, to yield a signal, at least one shifter configured to shift a frequency of at least one of the coherent light sources to provide a carrier frequency in the signal, and a processing unit configured to derive a vibration frequency of the target from the sensor signal with respect to the carrier frequency. The vibration frequency of the target is separated from the carrier frequency and speckle disturbances may be attenuated or avoided.

Abstract: Systems and methods are provided, which use at least two coherent light sources with known phase relations between them, which are configured to illuminate a target with at least two corresponding spots, an optical unit comprising a mask and configured to focus, onto a sensor, interfered scattered illumination from the spots of the target, passing through the mask, to yield a signal, at least one shifter configured to shift a frequency of at least one of the coherent light sources to provide a carrier frequency in the signal, and a processing unit configured to derive a vibration frequency of the target from the sensor signal with respect to the carrier frequency. The vibration frequency of the target is separated from the carrier frequency and speckle disturbances may be attenuated or avoided.

Abstract: The invention concerns a portable carrying apparatus (100) and a method (800) of the operation thereof. In one arrangement, the portable carrying apparatus can include a holding device (104) and a clip (106). The holding device can be made of a material that is capable of transmitting light. A light source (302) can be activated by an activation device (410) to illuminate the holding device in the occurrence of an event. The method can also include configuring the duration as well as a sequence of illumination of the light source, depending on the event that takes place.

Abstract: Switch assembly (100) includes a housing (112) having a pair of spring finger contacts (114and 116) and a circuit board (144). A spring loaded actuator (134) is slideably located within housing (112) between first and second switching positions. Actuator (134) includes a pair of conductive wipers (136 and 138) which move relative to metalized traces (146, 148 and 150) located on the top surface of circuit board (144). Switch assembly (100) provides for a compact surface mountable switch which is capable of switching RF signals between a radio antenna (618) and an external accessory connector while minimizing electrical signal path lengths and moving parts in the switch assembly.

Abstract: A portable radio housing has a shield that provides electromagnetic isolation between logic and radio boards operating on close frequencies. The radio board is positioned in a conductive frame having fours sides surrounding a central opening. A tab on the frame is connected to a power module on the radio board to sink heat from the power module. A middle shield having sides with integral spring fingers at calculated intervals is attached to the frame over the rear surface of the radio board. A logic board and rear shield are attached to the frame over the middle shield. A connector protrudes through an opening in the middle shield and interconnects the logic and radio boards. A front shield, also having sides with integral spring fingers, is attached to the frame over the front surface of the radio board. The front shield has an integral speaker baffle and tabs for holding a connector. An outer housing and keypad/display module enclose the frame.