Abstract: An optical subassembly includes a substrate, a group of solder features on the substrate, a die on the substrate, and a cap on the substrate and over the die. The cap includes (1) a lens over the die and (2) an inner or outer surface that snap-fits to the solder features.

Abstract: A sub-assembly or package for a die in the receiving section of an optical transceiver includes a semiconductor sub-mount that is electrically connected to the die and a cap that is bonded to the sub-mount to hermetically seal the die in a cavity. The die can be flip-chip bonded to the sub-mount and can include a diffractive optical element fabricated on a back side of the die. Active circuitry such as an amplifier for an output signal from a photosensor on the die can be integrated into the sub-mount. For an OSA, a post can be attached to the package along a path of an optical signal to the photosensor. The post facilitates alignment of an optical fiber. A flexible or rigid circuit can be soldered to external terminals of the sub-mount.

Abstract: Fiber optic connectors and methods of making the same are described. In one aspect, a fiber optic connector includes a support surface and at least one alignment pin. The support surface has at least one optical communication port. Each alignment pin has an elongated distal end and a flanged proximal end with a bottom surface that is fixedly attached to the support surface.

Abstract: A sub-assembly or package for a die in the receiving section of an optical transceiver includes a semiconductor sub-mount that is electrically connected to the die and a cap that is bonded to the sub-mount to hermetically seal the die in a cavity. The die can be flip-chip bonded to the sub-mount and can include a diffractive optical element fabricated on a back side of the die. Active circuitry such as an amplifier for an output signal from a photosensor one the die can be integrated into the sub-mount. For an OSA, a post can be attached to the package along a path of an optical signal to the photosensor. The post facilitates alignment of an optical fiber. A flexible or rigid circuit can be soldered to external terminals of the sub-mount.

Abstract: VCSEL array configurations for use with parallel WDM transmitters are disclosed. Transmitters that use several wavelengths of VCSELs are built up out of multiple die to avoid the difficulty of manufacturing monolithic arrays of VCSELs with different optical wavelengths. VCSEL configurations are laid out to insure that VCSELs of different wavelengths that destined for the same waveguide are close together.

Abstract: Fiber optic connectors and methods of making the same are described. In one aspect, a fiber optic connector includes a support surface and at least one alignment pin. The support surface has at least one optical communication port. Each alignment pin has an elongated distal end and a flanged proximal end with a bottom surface that is fixedly attached to the support surface.

Abstract: Optoelectronic device packaging assemblies and methods of making the same are described. In one aspect, an optoelectronic device packaging assembly includes an electrical sub-mount that includes a mounting area, a device turning mount, and a light-emitting device. The device turning mount has a sub-mount mounting side that is attached to the mounting area of the electrical sub-mount and a device mounting side that has a device mounting area that is oriented in a plane that is substantially perpendicular to the mounting area of the electrical sub-mount. The light-emitting device includes one or more semiconductor layers that terminate at a common light-emitting surface and are operable to emit light from the light-emitting surface. The light-emitting device is attached to the device mounting area of the device turning mount with the light-emitting surface oriented in a plane that is substantially parallel to the mounting area of the electrical sub-mount.

Abstract: A light fixture (10) is disclosed which includes junction box (11), an annular mounting plate, a canopy (21), a collar loop (23), a collar nut (25) and a light assembly (34) which includes a length of electric cord (41). The canopy (21) includes an outer shell (29) and central winding spool (30) which is mounted concentrically within the canopy outer shell (29) and concentrically about a mounting opening (22) within the canopy (21). The central winding spool (30) has a generally cylindrical central portion (31) and an annular flange portion (32) extending from the top of the central portion (31). The slack portion of the electric cord (41) may be wound about the winding spool (30) in order to stow it in a safe and efficient manner.

Abstract: A mold apparatus and method for creating designs on the interior of molds includes a resilient form with an exterior and an interior, with a design formed on the exterior. A rigid support member is removably attached to the interior of the resilient form. A mold pattern, conformed to removably receive the rigid support member and the resilient form in combination, completes the basic elements of the invention. In one aspect of the invention, a passageway in the rigid support member is provided for introducing a gas between the rigid support member and the resilient form. In another aspect of the invention, a vacuum application device is provided for applying a vacuum to the interior of the resilient form.

Abstract: A light fixture (10) is disclosed which includes junction box (11), an annular mounting plate, a canopy (21), a collar loop (23), a collar nut (25) and a light assembly (34) which includes a length of electric cord (41). The canopy (21) includes an outer shell (29) and central winding spool (30) which is mounted concentrically within the canopy outer shell (29) and concentrically about a mounting opening (22) within the canopy (21). The central winding spool (30) has a generally cylindrical central portion (31) and an annular flange portion (32) extending from the top of the central portion (31). The slack portion of the electric cord (41) may be wound about the winding spool (30) in order to stow it in a safe and efficient manner.

Abstract: Waveguide based connector systems for optically coupling a fiber optic cable and an optoelectronic device and a method of fabricating the same are described. In one aspect, a connector system comprises an optical waveguide and an optical turn assembly. The optical waveguide has a first end and a second end. The first end of the optical waveguide is connectable to the fiber optic cable in an orientation aligned with a line-side connection axis. The optical turn assembly has a first optical port that is connected to the second end of the optical waveguide in an orientation aligned with a device-side connection axis, a second optical port that is oriented to communicate optically with the optoelectronic device along a device communication axis substantially intersecting the device-side connection axis, and an optical turn system that is operable to guide light along a path between the first optical port and the second optical port.

Abstract: A method and structure of the present invention provides alignment between a first optical alignment component and a second optical alignment component. The first optical alignment component includes at least one positioning aperture and at least one alignment element partially positioned within the positioning aperture. The second component includes at least one alignment channel configured to receive at least a portion of the alignment element providing alignment between the first and second optical alignment components. In one embodiment, the alignment component is a sphere. In one embodiment, the positioning aperture is a square V-shaped aperture.

Abstract: A convertible modular lantern is provided which includes a mount assembly, mountable to a structure, a housing supported by the mount assembly, a downrod and light cluster assembly connected to the housing and a shade assembly attached to the housing and disposed in surrounding relationship with the downrod and light cluster assembly. The shade assembly may include a plurality of light transmitting panels. The downrod and light cluster assembly includes at least one lamp socket mounted on a support member, with a light bulb disposed in each socket, and a hollow downrod attached to and extending upwardly from the support member. A first plurality of wires is electrically coupled at one end to each socket and extends upwardly within the downrod, terminating at the opposite end in an upper electrical connector. A second plurality of wires is provided which is also coupled at one end to each socket and terminates, at the opposite end, in a lower electrical connector.

Abstract: A protective guard for attachment to conventional lift trucks to prevent damage to transported materials caused by the hard surfaces and edges of lift forks is provided which comprises a flexible sheet having cushioning characteristics and having a width sufficient in length to span and cover the lift forks. The protective guard further comprises hook and loop type fasteners for attaching the flexible sheet to the lift truck such that the sheet covers the potentially damaging lift forks and allows for lateral movement of the lift forks.

Abstract: This invention provides an air control system which is retrofittable in an intermediate position between upstream compressors and air storage vessels and downstream useful production equipment or the like to provide benefits of greater air-utilization efficiency and a better air system balance between supply and demand, especially on an air-weight flow basis. A preferred embodiment employs a plurality of servo-driven flow controllers in parallel between a pair of header tanks and controls them in response to sensed downstream pressures and to the pressure differential across the control system.

Abstract: An idle speed control device is disclosed for an internal combustion engine controlled by a throttle wherein the device has a throttle stop positioning shaft for the throttle and a threaded drive gear that engages threads on the shaft and on turning in one direction retracts the shaft and connected throttle stop on turning in the opposite direction extends the shaft to a maximum throttle stop positioned where the gear disengages from the shaft and then can freewheel in the opposite direction without forcing further extension of the shaft. A conical spring received on the shaft has a small diameter end adapted to self-lock to the shaft and a large diameter end adapted to be engaged by the gear to compress the spring as the shaft is fully extended whereby the spring is loaded to forcibly re-engage the gear with the shaft when the gear is turned in the one direction to initiate retraction of the throttle stop when fully extended.

Abstract: In a telephone subscriber set, circuitry is provided for muting the receiver prior to disabling the transmitter and for enabling the transmitter prior to removing the muting from the receiver.

Abstract: A vacuum forming mold for reshaping sheets of thermoplastic material is provided with means to impart indicia to the articles produced. Such indicia can be molded into the article by providing interchangeable members which are insertable and removeable from the mold. By arranging the members in different combinations any desired numbering can be obtained.

Abstract: A keyboard system includes a row and a column matrix of electrically isolated conductors with a key switch at each intersection which is effective, when closed, to electrically connect the associated intersecting row and column conductors. The conduction path of a column transistor is connected between each column conductor and a first power terminal and the gate-to-source region of a respective row transistor is connected between each row conductor and a second power terminal. The column transistors are turned-on prior to any switch closure. Therefore, when a switch is closed, its associated column transistor provides a very low impedance, low voltage drop, path between the first power terminal and the row transistor connected to the row conductor associated with the switch. The row transistor is then turned-on if the operating voltage applied between the first and second power terminal exceeds the threshold voltage of the row transistor.

Abstract: A matrix array of row and column conductors, electrically isolated from each other, with a key switch connected between a row and a column conductor at each intersection of a row and a column conductor. Each column conductor is connected to a normally non-conducting current sourcing circuit and each row conductor is connected to a normally non-conducting current sinking circuit. Each key switch, when closed, connects its associated row and column conductors causing current to flow between that column's current sourcing circuit and that row's current sinking circuit. The current sourcing and the current sinking circuits associated with the particular switch closure then produce signals indicative of that key switch closure.