Abstract: A lighting device includes a light source and an enclosure enclosing the light source wherein a portion of the enclosure has a focus-forming curvature such that when the light from the light source is reflected off the enclosure element the reflected light intersects at the focus of the curvature and creates a virtual light source at the focus. A reflective coating or a reflective material may be applied to the enclosure, or a ball lens may be used around the light source, to increase the intensity of the reflected light and of the virtual light source. A diffuser may be used to change the size and shape of the virtual light source.

Abstract: A linear light-emitting diode (LED)-based solid-state lamp using a novel voltage sensing and control mechanism operates normally in both single-ended and double-ended luminaire fixtures. The voltage sensing and control mechanisms automatically detect supply source configuration in the fixture and make proper management so that the linear LED lamp works in any fixtures without operational uncertainty or risk of fire. When used with shock protection switches on the two lamp bases at two opposite ends, the universal lamp fully protects a person from possible electric shock during initial installation and re-lamping.

Abstract: A linear light-emitting diode (LED)-based solid-state universal lamp using a degenerate voltage sensing and control mechanism operates normally in both single-ended and double-ended linear tube lamp fixtures. The degenerate voltage sensing and control mechanism automatically detects power source configuration in the fixture and makes proper management so that the universal lamp works in any fixtures without operational uncertainty or risk of fire. When used with shock protection switches in the two lamp bases at two opposite ends, the universal lamp fully protects a person from possible electric shock during initial installation and re-lamping.

Abstract: An LED lighting device includes at least one LED light source emitting light, at least one rechargeable battery for supplying power when external power is not available, at least one electrical connector for connecting the rechargeable battery to external power source for recharging, and at least one control mechanism for switching the operation mode of the device. By setting the operation mode via the control mechanism, the LED light device can be used for more than one intended purposes such as regular lighting, emergency lighting, and flashlight.

Abstract: A device for shifting the imaging axis of a microscope for inspecting endfaces of a fiber-optic connector having multiple rows of endfaces has a supporting body for receiving a microscope; a first swinging lever mounted on top of the supporting body and rotatable about a first swinging axis perpendicular to the imaging axis of the microscope; a first connecting piece extending from the first swinging lever towards the imaging axis; a second swinging lever pivoted on the first connecting piece and rotatable about a second swinging axis perpendicular to the first swinging axis; and a fitting tip connected to the second swinging lever for interfacing with the fiber-optic connector. Using two sets of biasing means and adjustment drivers, the imaging axis passing through the supporting body and the fitting tip can be shifted in two mutually perpendicular directions to selectively align with any endface of the fiber-optic connector.

Abstract: A linear light-emitting diode (LED)-based solid-state lamp using a novel voltage sensing and control mechanism operates normally in both single-ended and double-ended luminaire fixtures. The voltage sensing and control mechanisms automatically detect supply source configuration in the fixture and make proper management so that the linear LED lamp works in any fixtures without operational uncertainty or risk of fire. When used with shock protection switches on the two lamp bases at two opposite ends, the universal lamp fully protects a person from possible electric shock during initial installation and re-lamping.

Abstract: A linear light-emitting diode (LED)-based solid-state lamp having an electrically insulating heat sink that comprises a honeycomb structure is used to replace a conventional metallic one for efficiently dissipating the heat generated by operating the lamp. The lamp further built with a pair of shock protection switches can operate free of electric shock hazard.

Abstract: A light-emitting diode (LED)-based solid-state device comprises a color mixing mechanism to dynamically change the correlated color temperature (CCT) of a white light. With different lumen proportions for white phosphor-coated LEDs and integrated red and green LEDs, the light mixtures can be located in any one of eight CCT quadrangles. In practice, CCTs of a white-light can be tuned in a continuous manner. Because all the possible light mixtures on the chromaticity diagram correspond to a line segment that overlays the Planckian locus within the eight CCT tolerance quadrangles, the effect of LED intensity fluctuations that may put the mixture out of white light region is reduced. Also, because the two additional LEDs that mix with the white phosphor-coated LEDs contribute to the overall spectral power distribution (SPD) that substantially matches the SPD of standard illuminants, a CRI of 80 can be reached.

Abstract: A linear light-emitting diode (LED)-based solid-state lamp having a double safety mechanism that comprises at least three shock protection switches, fully protects a person from possible electric shock during re-lamping or maintenance. One protection switch provided at each end of the lamp is able to cut off power when the associated end of the lamp is not inserted into the lamp socket. A third protection switch can be used to turn off the power from the AC main for additional shock protection.

Abstract: A linear light-emitting diode (LED)-based solid-state device comprising a curved surface to hold a flexible printed circuit board with multiple linear arrays of surface mount LEDs provides lighting applications with a broad viewing angle over 180° along the radial direction. On each of the two lamp bases of the lamp, a shock-protection switch is mounted to prevent shock hazard during re-lamping.

Abstract: A linear light-emitting diode (LED)-based solid-state device comprising at least two shock protection switches, at least one each at the two ends of the device, fully protects a person from possible electric shock during re-lamping with LED lamps.

Abstract: A linear light-emitting diode (LED)-based solid-state lamp having an electrically insulating heat sink that comprises a honeycomb structure is used to replace a conventional metallic one for efficiently dissipating the heat generated by operating the lamp. The lamp further built with a pair of shock protection switches can operate free of electric shock hazard.

Abstract: A device for shifting the imaging axis of a microscope across the endfaces of a multi-fiber connector for inspecting the endfaces comprises: a supporting body attached to the optical tube of a microscope and having an extended portion; a swinging lever mounted at one end to the extended portion of the supporting body and rotatable on an axis perpendicular to the imaging axis of the microscope; a connection piece connecting between the swinging lever and a fitting tip; a bevel wheel fastened to the supporting body; and a torsion spring for pushing the swinging lever against a slanted surface of the bevel wheel. The bevel wheel is adapted to swing the swinging lever relative to the supporting body so that the imaging axis of the microscope is moved relative to the fitting tip to selectively align the imaging axis across the endfaces for inspection.

Abstract: A light-emitting diode (LED)-based solid-state device comprises a color mixing mechanism to dynamically change the correlated color temperature (CCT) of a white light. With different lumen proportions for white phosphor-coated LEDs and integrated red and green LEDs, the light mixtures can be located in any one of eight CCT quadrangles. In practice, CCTs of a white-light can be tuned in a continuous manner. Because all the possible light mixtures on the chromaticity diagram correspond to a line segment that overlays the Planckian locus within the eight CCT tolerance quadrangles, the effect of LED intensity fluctuations that may put the mixture out of white light region is reduced. Also, because the two additional LEDs that mix with the white phosphor-coated LEDs contribute to the overall spectral power distribution (SPD) that substantially matches the SPD of standard illuminants, a CRI of 80 can be reached.

Abstract: A linear light-emitting diode (LED)-based solid-state device comprising a curved surface to hold a flexible printed circuit board with multiple linear arrays of surface mount LEDs provides lighting applications with a broad viewing angle over 180° along the radial direction. On each of the two lamp bases of the lamp, a shock-protection switch is mounted to prevent shock hazard during re-lamping.

Abstract: A linear light-emitting diode (LED)-based solid-state device comprising at least two shock protection switches, at least one each at the two ends of the device, fully protects a person from possible electric shock during re-lamping with LED lamps.

Abstract: A linear light-emitting diode (LED)-based solid-state lamp having a double safety mechanism that comprises at least three shock protection switches, fully protects a person from possible electric shock during re-lamping or maintenance. One protection switch provided at each end of the lamp is able to cut off power when the associated end of the lamp is not inserted into the lamp socket. A third protection switch can be used to turn off the power from the AC main for additional shock protection.

Abstract: A device for shifting the imaging axis of a microscope across the endfaces of a multi-fiber connector for inspecting the endfaces comprises: a supporting body attached to the optical tube of a microscope and having an extended portion; a swinging lever mounted at one end to the extended portion of the supporting body and rotatable on an axis perpendicular to the imaging axis of the microscope; a connection piece connecting between the swinging lever and a fitting tip; a bevel wheel fastened to the supporting body; and a torsion spring for pushing the swinging lever against a slanted surface of the bevel wheel. The bevel wheel is adapted to swing the swinging lever relative to the supporting body so that the imaging axis of the microscope is moved relative to the fitting tip to selectively align the imaging axis across the endfaces for inspection.

Abstract: A portable apparatus for inspecting and cleaning fiber optic connectors which comprises a housing, an adapting tip receptacle on a top side of the housing, an optical module embedded in the housing, a focusing knob connected to the optical module, an LCD screen on a front side of the housing for displaying the image of the endface of the connector interfaced with the apparatus, and a cleaner module. In conjunction with a set of universal tips for male connectors, a set of converters are provided to form universal tips for female connectors, which greatly simplifies the overall tip family.

Abstract: A device for shifting the imaging axis of a microscope across the endfaces of a multi-fiber connector for inspecting the fiber-optic endfaces through the microscope comprises a supporting body for attaching at one end to the optical tube of a microscope; a pendular arm rotatably mounted to another end of the supporting body; a fitting tip attached to another end of the pendular arm; a bevel wheel fastened to the supporting body; and a torsion spring for pushing the pendular arm against a slanted surface of the bevel wheel. The bevel wheel is adapted to swing the pendular arm relative to the supporting body so that the imaging axis of the microscope is moved relative to the fitting tip to selectively align the imaging axis between adjacent fiber-optic endfaces for inspection.