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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 5546484 | Fiber optic switch using polished-type directional coupler A fiber optic switch module that can be incorporated into switch designs characterized by negligible crosstalk. The switch module is capable of operation over two wavelength bands. A 2×2 switch module has an open or bar state in which polished portions o... | 08/13/1996 |
| 5408556 | 1 X N splitter for single-mode fibers and method of construction A 1 X N splitter for single-mode optical fiber includes an individual single-mode optical fiber having its junction end juxtaposed, through a focusing lens/junction element, to the end of a bundle of arbitrarily arranged single-mode fibers which are fused... | 04/18/1995 |
| 5285516 | Fused fiber optic attenuator having axially overlapping fiber end portions A method for fabricating single-mode and multi-mode attenuators characterized by a high level of wavelength insensitivity. A light source is connected to one end of a fiber and the other end is connected to an optical power meter. The optical power meter ... | 02/08/1994 |
| 5226104 | Optical fiber coupler with attenuator An attenuating centrosymmetric reflective (CSR) device is provided for controllably coupling optical energy between pairs of optical fibers. The CSR-based attenuating device comprises a CSR coupler having a neutral density attenuating plate inserted betwe... | 07/06/1993 |
| 5191467 | Fiber optic isolater and amplifier A fiber optic isolator uses only one-half the amount of costly rotator material as the prior art and an isolated laser amplifier uses only one-quarter the amount of costly rotator material. An embodiment of a fiber optic isolator includes a concave reflec... | 03/02/1993 |
| 5028104 | Fiber optics bypass switch A bypass switch wherein a spherical reflector is movable between first and second positions relative to an array of optical transceivers, at locations, designated the "S" (source), "D" (detector), "I" (input fiber), "O" (output fiber), and "L1" and "L2" (... | 07/02/1991 |
| 4993796 | Fiber optics communication modules The present invention provides modules for interfacing optical fibers with very low light loss and with provision for monitoring of the optical signal. The modules according to the present invention are characterized by the precise tolerances required in ... | 02/19/1991 |
| 4934784 | Hybrid active devices coupled to fiber via spherical reflectors Multiple reflection modules having as a light source or a light target a lensed optical fiber employ one more spherical reflectors and wavelength selectors for selecting the wavelengths of optical radiation on selected optical paths between said light sou... | 06/19/1990 |
| 4846543 | Star coupler for optical fibers A star coupler/monitor comprises a beam splitter (25) and at least one imaging element (30) oriented relative to first, second, and third spatially discrete regions (35a-c) as follows. A minor portion of the light emanating from any given point in the fir... | 07/11/1989 |
| 4755017 | Construction for fiber optics communications modules using elements bonded along abutting flat surfaces and method of fabricating same An alignment method and construction for fiber optics communication modules. A module includes a plano-convex element, a concave element , and a fiber-holding substrate. The plano-convex element has first and second surfaces. The first surface is flat; th... | 07/05/1988 |
| 4714313 | Star coupler for optical fibers Apparatus and a manufacturing method for a star coupler/monitor (10). A star coupler/monitor comprises a beam splitter (25) and at least one imaging element (30) oriented relative to first, second, and third spatially discrete regions (35a-c) as follows. ... | 12/22/1987 |
| 4479697 | Fiber optics communications modules A fiber optics coupler module has a portion defining a spherical reflective surface characterized by a self-conjugate plane having the property that a point source of light in the self-conjugate plane is imaged in the self-conjugate plane. The coupler inc... | 10/30/1984 |
| 4329017 | Fiber optics communications modules The present invention provides modules for interfacing optical fibers with very low light loss and with provision for monitoring of the optical signal. The modules according to the present invention are characterized by the precise tolerances required in ... | 05/11/1982 |
| 4078548 | High efficiency solar panel A window portion is interposed between the incident light and a heat absorbing portion and at least one of the heat absorbing and window portions has a plurality of spaced apart reflecting surfaces, separate ones of which face each other and transmit the ... | 03/14/1978 |
| 3988057 | Prism reflector for optical projector/reader Light from a bulb is projected through the microfiche transparency by a condensor and a projection lens system and the projected image therefrom is passed through a prism to viewing screen means. The prism has a flat or curved, transparent entrant surface... | 10/26/1976 |
| 3985116 | High efficiency solar panel A window portion is interposed between the incident light and a heat absorbing portion and at least one of the heat absorbing and window portions has a plurality of spaced apart reflecting surfaces, separate ones of which face each other and transmit the ... | 10/12/1976 |
| 3941467 | Optical projector/reader Light from a bulb is projected through the microfiche transparency by a condensor and a projection lens system and the projected image therefrom is passed through a prism to viewing screen means. The prism has a flat or curved, transparent entrant surface... | 03/02/1976 |
| 3936157 | High efficiency light transmitting window panel The window panel includes a plurality of sets of reflecting surfaces which are spaced apart from and facing each other and which transmit the incident light at least in part by multiple reflections. The sets of reflecting surfaces are arranged parallel to... | 02/03/1976 |
