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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 8174756 | Rhomb beam splitter in optical communication Rhomb beam splitters are used to implement various optical demodulators, in particular PSK and DPSK demodulators. The parallel beam-splitting and reflective surfaces of the rhomb structure produce reflection and transmission beams that exit the beam splitter paralle... | 05/08/2012 |
| 8111450 | Rhomb beam splitter in optical communication Rhomb beam splitters are used to implement various optical demodulators, in particular PSK and DPSK demodulators. The parallel beam-splitting and reflective surfaces of the rhomb structure produce reflection and transmission beams that exit the beam splitter paralle... | 02/07/2012 |
| 8014073 | Thin film coated optical hybrid An absorptive coating is in contact with an optical beam splitter such that a signal beam and a reference beam incident on the beam splitter from opposite sides are can be combined to produce two interference beams having a phase difference of about ... | 09/06/2011 |
| 8004750 | Multiple-FSR DPSK demodulator A switchable free-spectral-range mode selector is used to change the free spectral range of a free-space delay-line interferometer. The mode selector consists of a rotatable device with at least one transparent plate selected to produce the desired change in the fre... | 08/23/2011 |
| 8004749 | Pseudo common-path DPSK demodulator A rhomb beam splitter, rather than a conventional cube, is used in combination with a mirror reflecting both the reflected and transmitted beams to obtain a delay-line interferometer demodulator with a substantially common path. This significantly reduces the sensit... | 08/23/2011 |
| 7982960 | Co-package DQPSK demodulator by Michelson interferometer An interferometer includes a means for splitting, at a splitting location, an input light beam into a first beam and a second beam; and means for recombining, at a recombination location, the first beam and the second beam. The interferometer is designed such that t... | 07/19/2011 |
| 7961316 | Optical spectrum analyzer with continuously rotating tunable filter An optical spectrum analyzer is implemented with a detector combined with a tunable filter mounted on a stage capable of 360-degree rotation at a constant velocity. Because of the constant rate of angular change, different portions of the input spectrum are detected... | 06/14/2011 |
| 7924505 | Free-space hitlessly switchable optical interleaver A reflective surface and a beamsplitting surface are optically coupled to a mirror and to phase optics arranged in interleaver configuration so as to either reflect all light to a single output in an all-pass mode of operation, or to split the incoming beam and prod... | 04/12/2011 |
| 7864433 | Free-space optical hybrid An exemplary optical hybrid includes a 50/50 un-polarized beam splitter, a folding prism, a beam shifter, a spacer and a phase shifter such that from an input S-beam (signal) and an L-beam (reference), four outputs, S+L, S−L, S+jL and S−jL, are produced. The pha... | 01/04/2011 |
| 7864430 | Modified Michelson delay line interferometer In an optical etalon with a fixed FSR determined by the cavity length, the time delay is adjusted by an etalon surface coating. The proper cavity length is chosen to achieve a desired FSR, and the coating is independently selected to obtain a desired time delay.... | 01/04/2011 |
| 7808715 | Michelson-interferometer-based delay-line interferometers An interferometer includes a means for splitting, at a splitting location, an input light beam into a first beam and a second beam; and means for recombining, at a recombination location, the first beam and the second beam. The interferometer is designed such that t... | 10/05/2010 |
| 7573641 | Free-space optical hybrid An exemplary optical hybrid includes a 50/50 un-polarized beam splitter, a folding prism, a beam shifter, a spacer and a phase shifter such that from an input S-beam (signal) and an L-beam (reference), four outputs, S+L, S−L, S+jL, S−jL, are produced. The phase ... | 08/11/2009 |
| 7522343 | Michelson interferometer based delay line interferometers An interferometer includes a means for splitting, at a splitting location, an input light beam into a first beam and a second beam; and means for recombining, at a recombination location, the first beam and the second beam. The interferometer is designed such that t... | 04/21/2009 |
| 7286757 | Optical performance monitoring device A wavelength beam splitter (WBS) is combined with a conventional tunable filter to sequentially select different channels in a multi-channel communication system. The WBS is characterized by a periodic spectral response with period equal to the channel spacing of th... | 10/23/2007 |
| 7145727 | Unpolarized beam splitter having polarization-independent phase difference when used as an interferometer Beam splitter designs for interferometers provide a phase difference between the two resulting interference beams that are independent of the polarization status of the incident beam. The polarization independent phase coating is achieved by making the internal beam... | 12/05/2006 |
| 6816315 | Optical path length tuner A parallel glass plate mounted on a rotating fixture is used to precisely control the optical path length of a light beam. The glass plate refracts the incident optical signal to increase the length of its optical path as a function of the angle of incidence. The de... | 11/09/2004 |
| 6714743 | Wide range tunable filter A wide range tunable filter is provided. A randomly polarized incoming beam is converted into two orthogonally polarized beams. A ½ wave plate and filter block turns these two beams into four beams. Two of the four beams have a single range of wavelengths and two b... | 03/30/2004 |
| 6587204 | Application of a step-phase interferometer in optical communication This invention is an optical communication interleave device using a variety of optical interferometer configurations where one of the beams carries a linear phase and the other beam carries a non-linear phase such that the frequency dependence of the pha... | 07/01/2003 |
