Abstract: A polarization switching apparatus has a first birefringent polarizer formed as a composite prism and disposed to direct incident light of a first polarization along a first optical path and light of a second polarization along a second optical path, wherein the second optical path is oblique to the first optical path. A beam redirector is disposed to redirect the first optical path from the first birefringent polarizer toward an input face of a second birefringent polarizer; wherein the second birefringent polarizer is also formed as a composite prism and is disposed to combine incident light of the first and second polarizations onto a common output path. A shutter apparatus is actuable to selectively block light of the first polarization or light of the second polarization from the input face of the second birefringent polarizer.

Abstract: A polarization switching apparatus has a first birefringent polarizer formed as a composite prism and disposed to direct incident light of a first polarization along a first optical path and light of a second polarization along a second optical path, wherein the second optical path is oblique to the first optical path. A beam redirector is disposed to redirect the first optical path from the first birefringent polarizer toward an input face of a second birefringent polarizer; wherein the second birefringent polarizer is also formed as a composite prism and is disposed to combine incident light of the first and second polarizations onto a common output path. A shutter apparatus is actuable to selectively block light of the first polarization or light of the second polarization from the input face of the second birefringent polarizer.

Abstract: A security system includes a security device and a spacer. The security device defines a first opening having a first diameter. The spacer is removably positionable in the first opening to create a center opening having a second diameter smaller than the first diameter. The security device includes a magnetically actuable locking mechanism and a housing having the magnetically actuable locking mechanism disposed therein. The locking mechanism includes a magnetically actuable latch, a belt configured to provide a latch mating element for the latch, and a flexible element to bias the magnetically actuable latch and the belt into a locked position. The housing includes a passageway which defines a belt pathway configured to slidingly receive the belt therein.

Abstract: A security system includes a security device and a spacer. The security device defines a first opening having a first diameter. The spacer is removably positionable in the first opening to create a center opening having a second diameter smaller than the first diameter. The security device includes a magnetically actuable locking mechanism and a housing having the magnetically actuable locking mechanism disposed therein. The locking mechanism includes a magnetically actuable latch, a belt configured to provide a latch mating element for the latch, and a flexible element to bias the magnetically actuable latch and the belt into a locked position. The housing includes a passageway which defines a belt pathway configured to slidingly receive the belt therein.

Abstract: Systems and apparatuses for a security device having a cable (922) are disclosed.

Abstract: A bottle security device includes an inner member and an outer member that cooperate to lock the bottle security device on the neck of a bottle. The inner member includes a plurality of fingers that are adapted to fit under the bead on a bottle neck. The inner member further includes outwardly extending teeth. The outer sleeve member of the device slides over the inner member and forces the fingers against the bottle. The outer sleeve member further includes a plurality of upwardly extending arms that have inwardly projecting teeth that engage the teeth of the inner member to lock the two members together. A key is used to separate the two pieces and release the security device from the bottle. The key extends down through the top of the outer sleeve member to physically engage the upwardly extending arms and to move them radially outward to where they disengage the inner member.

Abstract: A security device locks to a display structure such as a pegboard or slatboard to prevent the rapid removal of merchandise from the display structure by preventing the rapid removal of the entire security device. The security device includes a base and a rod with the base having locked and unlocked positions. The unlocked position of the base allows the security device to be removed from the display structure. The locked position of the base prevents the security device from being removed. The security device includes a lock that holds the base in the locked position. A key may be used to unlock the base. Customers may remove items of merchandise from the security device while the lock and base are in their locked positions.

Abstract: A bottle security device includes an inner member and an outer member that cooperate to lock the bottle security device on the neck of a bottle. The inner member includes a plurality of fingers that are adapted to fit under the bead on a bottle neck. The inner member further includes outwardly extending teeth. The outer sleeve member of the device slides over the inner member and forces the fingers against the bottle. The outer sleeve member further includes a plurality of upwardly extending arms that have inwardly projecting teeth that engage the teeth of the inner member to lock the two members together. A key is used to separate the two pieces and release the security device from the bottle. The key extends down through the top of the outer sleeve member to physically engage the upwardly extending arms and to move them radially outward to where they disengage the inner member.

Abstract: A bottle security device includes an inner member and an outer member that cooperate to lock the bottle security device on the neck of a bottle. The inner member includes a plurality of fingers that are adapted to fit under the bead on a bottle neck. The inner member further includes outwardly extending teeth. The outer sleeve member of the device slides over the inner member and forces the fingers against the bottle. The outer sleeve member further includes a plurality of upwardly extending arms that have inwardly projecting teeth that engage the teeth of the inner member to lock the two members together. A key is used to separate the two pieces and release the security device from the bottle. The key extends down through the top of the outer sleeve member to physically engage the upwardly extending arms and to move them radially outward to where they disengage the inner member.

Abstract: A security device is adapted to be locked to a display board such as pegboard or slatboard. The security device allows multiple items of merchandise to be displayed for sale. The device is locked to the board so that a shoplifter cannot remove the entire device along with all of the merchandise. A shoplifter cannot remove all of the items in a single movement. The device may also include a locking end assembly that may pivot to an unlocked position to allow an employee to rapidly load the device.

Abstract: An electronic article surveillance security device securable to an article to be protected from theft where the device includes a strap that is wrapped around or inserted through the article, and then tightly secured within a housing of the device that includes an electronic article surveillance tag. The housing has smooth tamper resistant seams and edges and a locking device for securely holding the strap once inserted therein. The strap includes ribs that are engageable within the housing by locking fingers and lips, all of which define a one-way locking mechanism that allows for insertion of the strap but denies removal once inserted. In at least one embodiment of the invention, a locking mechanism is provided that may be unlocked such that the security device may be reused with various articles.

Abstract: A semiconductor integrated circuit device of the beam lead type having a semiconductor interconnection substrate with apertures for integrated circuit chips therein and with metallization patterns having sharply pointed ends for penetrating oxide layers over the bonding pads of the chips and for making electrical connection thereto. Devices thus produced may be assembled and tested and failed chips replaced as necessary before the chips are ultrasonically welded to the interconnection metallization and before final fabrication of the device. The invention also includes a method for producing an interconnection substrate in which a plurality of conically shaped holes are etched into a semiconductor wafer having sharp points within the body of the wafer. A metal layer is deposited over the surface of the semiconductor wafer filling the etched holes. Sharp points are thus formed on the metal in the etched holes.