An object of the invention is to detect four conditions, namely upright, rightwardly inclined, leftwardly inclined and inverted conditions. A casing has a housing space formed therein, and has an inner surface symmetrical with respect to an axis. In the housing space of the casing, a detection objec
An object of the invention is to detect four conditions, namely upright, rightwardly inclined, leftwardly inclined and inverted conditions. A casing has a housing space formed therein, and has an inner surface symmetrical with respect to an axis. In the housing space of the casing, a detection object that rolls along the inner surface around the axis is housed. The inner surface of the casing is octagonal within a virtual plane vertical to the axis, and adjoining sides of the octagon are different in length. The detection object in the housing space of the casing is stably held when situated on one of the four shorter sides of the octagon, and the position of the detection object being held is detected by a light emitting element and a light receiving element.
대표청구항▼
An object of the invention is to detect four conditions, namely upright, rightwardly inclined, leftwardly inclined and inverted conditions. A casing has a housing space formed therein, and has an inner surface symmetrical with respect to an axis. In the housing space of the casing, a detection objec
An object of the invention is to detect four conditions, namely upright, rightwardly inclined, leftwardly inclined and inverted conditions. A casing has a housing space formed therein, and has an inner surface symmetrical with respect to an axis. In the housing space of the casing, a detection object that rolls along the inner surface around the axis is housed. The inner surface of the casing is octagonal within a virtual plane vertical to the axis, and adjoining sides of the octagon are different in length. The detection object in the housing space of the casing is stably held when situated on one of the four shorter sides of the octagon, and the position of the detection object being held is detected by a light emitting element and a light receiving element. t processes the digital signals and determines a polarization extinction ratio (PER) of light output from the polarization controller, the computer determining whether and how much the polarization controller needs to be adjusted based on the determined PER. 3. The system of claim 1, wherein the processing logic will continue to generate and send feedback signals to the polarization controller to cause the state of polarization of light output from the polarization controller to be adjusted until the state of polarization of light output from the polarization controller generates a desired state of polarization at the distal end of the optical fiber. 4. The system of claim 1, wherein the processing logic includes an analog-to-digital converter (ADC) and a computer, the ADC converting the electrical signals into digital signals suitable for processing by the computer, and wherein the computer executes a polarization-dependent loss (PDL) algorithm that processes the digital signals and determines the PDL caused by the optical fiber, the computer determining whether and how much the polarization controller needs to be adjusted based on the determined PDL. 5. The system of claim 1, wherein the first and second optical sensors are first and second photodiodes, respectively. 6. The system of claim 1, wherein the processing logic includes a first and second processing circuit and a first and second analog-to-digital converter (ADC), and a computer, the first and second processing circuits processing the electrical signals from the first and second optical sensors, respectively, the first and second ADCs converting the electrical signals from the first and second optical sensors, respectively, into a first set of digital signals and a second set of digital signals, the computer processing the first and second sets of digital signals to determine whether and how much the polarization controller should be adjusted. 7. The system of claim 6, wherein if, after processing the first and second sets of digital signals the computer determines that the light output from the distal end of the optical fiber does not have a desired polarization state, the computer generates a feedback signal that is sent to the polarization controller to cause the polarization controller to adjust the polarization state of light being generated thereby and output into the proximal end of the optical fiber. 8. The system of claim 7, wherein the computer executes a polarization extinction ratio (PER) algorithm that processes the first and second sets of digital signals and determines a polarization extinction ratio (PER) of light output from the polarization controller, the computer determining whether and how much the polarization controller should be adjusted based on the determined PER. 9. The system of claim 7, wherein the computer will continue to generate and send feedback signals to the polarization controller to cause the state of polarization of light output from the polarization controller to be adjusted until the polarization state of light output from the polarization controller generates a desired polarization state at the distal end of the optical fiber. 10. The system of claim 7, wherein the computer executes a polarization-dependent loss (PDL) algorithm that processes the first and second sets of digital signals and determines a polarization-dependent loss (PDL) with respect to light output from the polarization controller and light output from the distal end of the optical fiber, the computer determining whether and how much the polarization controller should be adjusted based on the determined PDL. 11. A system for testing an optical device under test (DUT) to determine whether the DUT is operating properly, the system comprising: a lens positioned at the output of a waveguide of the DUT to receive light generated by a polarization controller and coupled into an input of the waveguide of the DUT by an optical fiber, the optical fiber having a p
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이 특허에 인용된 특허 (4)
Durst Klaus (Bruchsal DEX), Ball-and-socket switch for detecting and signalling selectable inclination directions of a base plane.
Chou, Tien-Ming, Photoelectric switch capable of preventing light leakage with a rib unit cooperating with a tubular wall to confine a rolling chamber.
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