Abstract: A broad-spectrum, high spatial and time resolution contact-field optical microscope comprises a fiber optical taper, a vacuum chamber, a photocathode, a magnetic lens photoelectron image enlarger, a micro-channel plate image intensifier, a phosphor screen and a CCD. Sample is placed directly in contact with a smaller sampling face of the optical taper. Light which is emitted, reflected or transmitted by the sample is launched into each of the fiber core ends on the sampling face and conveyed by the optical fibers to a larger imaging face of the optical taper, thereby presenting an enlarged image at the imaging face. The image is converted into a photoelectron image by photocathode which is deposited on the surface of the imaging face. The photoelectron image is further enlarged by magnetic lenses and intensified by micro-channel plate. The enlarged and enhanced electron image is displayed on phosphor screen and coupled through faceplate to CCD.

Abstract: A three dimensional optical circuit featuring an optical manifold for organizing, guiding and protecting individual optical fibers is shown. One aspect of the present invention is a three dimensional manifold which may be constructed using a rapid prototyping process such as, but not limited to, stereolithography (“SLA”), fused deposition modeling (“FDM”), selective laser sintering (“SLS”), and the like. The manifold has a number of input openings in a first ordered arrangement at one end connected by passageways to a number of output openings in a second ordered arrangement at the opposite end. A plurality of optical fibers may be directed through the passageways of the manifold to produce a three dimensional optical circuit such as a shuffle. Moreover, the optical manifold may be used in conjunction with a number of connections or terminations to form a various optical modules. These modules may be configured for rack mounting within enclosures for electrical components.

Abstract: A three dimensional optical circuit featuring an optical manifold for organizing, guiding and protecting individual optical fibers is shown. One aspect of the present invention is a three dimensional manifold which may be constructed using a rapid prototyping process such as, but not limited to, stereolithography (“SLA”), fused deposition modeling (“FDM”), selective laser sintering (“SLS”), and the like. The manifold has a number of input openings in a first ordered arrangement at one end connected by passageways to a number of output openings in a second ordered arrangement at the opposite end. A plurality of optical fibers may be directed through the passageways of the manifold to produce a three dimensional optical circuit such as a shuffle. Moreover, the optical manifold may be used in conjunction with a number of connections or terminations to form a various optical modules.

Abstract: The invention is a bearing unit and bearing system for supporting a large rotatable element, such as a mooring turret. The bearing unit includes a hydrostatic suspension system which enables the bearing unit to accommodate fabrication tolerances and also enables the bearing unit to conform to relative movements between the ship and the turret, thereby providing a compliant bearing system. The system includes multiple bearing units of the invention which serve as thrust and/or radial bearings for supporting the turret. By manifolding a plurality of bearing units together in a fluidly-isolated group, the pressure applied to the bearing units in that group is self-equalizing so that all the bearing units act in unison to equally support the load, while also allowing some degree of self-alignment and tilting of the load. As a result, the bearing system emulates a self-aligning bearing system and is able to compensate for axial and angular misalignment.

Abstract: The present invention relates to an optical multiplexer/demultiplexer. In the multiplexer/demultiplexer, a first grating receives to diffract a multi-wavelength light signal from a first port into light signals with different wavelengths. A second grating diffracts these light signals towards second ports. The second grating is disposed parallel with the first grating. The second grating has the same grating interval and grating direction as the first grating. The light signals diffracted by the second grating travel parallel with each other. Therefore, the light signals can efficiently enter the second ports without sophisticated lens design and adjustment of the optical system.

Abstract: A beam collecting device and a laser emission device are disclosed incorporating a laminated optical waveguide array and refraction means therein. The laminated optical waveguide array is composed of a plurality of plate-like optical waveguides made of a material having a predetermined refractive index and a plurality of spacer members having a lower refractive index than that of said optical waveguides and arranged alternately with said optical waveguides. The spacer members take the form of cylindrical members, spherical members or plate-like members. The beam collecting device and laser emission device comprise a semiconductor laser array having a plurality of laser emitting parts arranged in fast and slow axis directions, the optical waveguide array, optical fibers and a collective lens. The laser emitting parts are divided into plural groups separated in the slow axis direction.

Abstract: An apparatus for directing light from a light source through a bundle of optic fibers, wherein the optic fibers are so arranged in the bundle such that at the end of the bundle opposite the light source, the optic fibers may expand into a display of an image generated by the light source. The apparatus comprises a bundle of optic fibers having a base end and a viewing end. The base end has a first angle across the bundle and is arranged so that light from the light source may be directed into the base end of each of the optic fibers. The light entering each of the optic fibers is carried to the viewing end. At the viewing end, each of the optic fibers is cut to expose an interior side face as a pixel viewing area having approximately a 1:1 aspect ratio.

Abstract: A fiber optic display device includes a linear array of illuminating elements, such as ultraviolet light emitting diodes, selectively emitting and projecting a first light onto a reflective surface of a rotary scanner that is rotated by a motor to have the reflective surface move the projected light over a light receiving surface of a light collector. The light collector receives the projected light and transmits the light through an array of optic fibers to a screen panel. The light is converted by a fluorescent layer of the screen panel into a visible light and forms an image.

Abstract: A flexible optic fiber cable is provided having a plurality of optic fibers grouped together as a fiber bundle with a flexible center section, in which the optic fibers are moveable relative to adjacent fibers in the fiber bundle, and two non-flexible end sections. Each of the two non-flexible end sections includes a generally uniform thickness protective layer extending over an outer surface thereof starting at a position spaced inwardly from a free end of the end section. A ferrule is located around and in an interference fit with the protective layer so that the end section is centered in the ferrule. An adhesive is located between the ferrule and the non-flexible end section from the position spaced inwardly from the free end of the end section to the free end thereof to connect the ferrule to the non-flexible end section.

Abstract: A waveguide made of optical glass used as an detector in electron microscopy, having a beveled hole through which an electron beam passes and a phosphor coated region to detect secondary and back-scattered electrons. The photons generated by secondary and back-scattered electrons striking the phosphor coated region are directed to a photomultiplier detector mated to the waveguide by internal reflections which are further enhanced by reflective surfaces. Further, photon transmission from the waveguide to the photomultiplier is enhanced by providing a flared section at the mating end to reduce internal reflections.

Abstract: An optical panel having a small inlet, and a method of making a small inlet optical panel, are disclosed, which optical panel includes a individually coating, stacking, and cutting a first plurality of stacked optical waveguides to form an outlet face body with an outlet face, individually coating, stacking, and cutting a second plurality of stacked optical waveguides to form an inlet face body with an inlet face, and connecting an optical coupling element to the first plurality and second plurality of stacked optical waveguides, wherein the optical coupling element redirects light along a parallel axis of the inlet face to a parallel axis of the outlet face. In the preferred embodiment of the present invention, the inlet face is disposed obliquely with and askew from the outlet face.

Abstract: A coherent optical fiber bundle is used in place of a lens for imaging. The input end of the bundle is shaped into the shape of a desired area for receiving light. The light is received and modified according to the shape. The other end can be flat and pressed directly against an image sensor.

Abstract: In a fiber optic display system an array of pixels form a continuous viewable surface. Each pixel is formed by a bundle of one or more optical fibers which vector light to the pixels from one or more light sources. High density of pixels at the viewable surface is achieved by bundling small diameter optical fibers adapted for vectoring light from a low density light sources. The two-dimensional geometry of the viewable surface is de-coupled from the light source which is arranged in a three dimensional space.

Abstract: A fiber optic display apparatus consists of a plurality of optical fibers which convey a projected image from an input, or first surface, to a display, or second surface, whose area is greater than or equal to that of the first surface, such that any image projected on to the first surface appears enlarged on the second surface. The second surface is comprised of tiles which attach to adjoining tiles by means of flexible tabs and pliable locator rods in such a fashion as to allow the second surface to follow general contours (e.g. concave or convex), while the optical fiber bundles from each tile are collected into a fixture to form the first planar surface. Because of the modular design of the display it can be assembled or disassembled rapidly.

Abstract: A light transport device comprises light fibers that individually have predetermined cross sections at one end that may be bundled together to provide a continuous plane, suitable for light input or output, that is substantially free of voids and free of non-light-transmitting materials. The other end of the individual light fibers has a cross section that is useful for injection or emission of light from a single fiber.

Abstract: A multiple optical fiber display module may be used in a Large Screen Display system. The multiple optical fiber display module includes at least two modular optical fiber display elements. Each modular display element further includes an optical fiber display tile, an optical fiber array, and an input matrix. The modular display module also includes a mounting frame for demountably attaching the input matrix of each modular optical fiber display tile to a single micro-display.

Abstract: A light transport device comprises light fibers that individually have predetermined cross sections at one end that may be bundled together to provide a bundled region that terminates in a continuous plane, suitable for light input, that is substantially free of voids and free of non-light-transmitting materials. The other end of the individual light fibers has a cross section that is useful for emission of light from a single fiber. In the absence of non-light-transmitting materials, light propagating in each of the light guides undergoes mixing by being coupled, while traveling in the bundled region, from one light guide to another, thus reducing nonuniformities in the color and intensity of the light emitted by the fibers.

Abstract: This invention encompasses a method for the manufacture and rapid assembly of large screen fiber optic displays (1, 2) containing a very large number of individual fibers (thousands to hundreds of thousands, or more). The display surface is modularized into relatively small, thin, interchangeable, injection-molded square or rectangular tiles (3) to simplify manufacture and assembly. The hundreds of fibers (7) required for each tile (3) are machine-configured into a plurality of flat, flexible fiber optic ribbon cables (4), each cable (4) comprised of a planar geometric array of optical fibers (7) embedded in a thin adhesive matrix (8). The image emission end of each flat, flexible fiber optic cable (4) is a fiber manifold (20) joined to an injection-molded thermoplastic array of light guides (11), each fiber terminating in a single light guide or emitter (12).

Abstract: Disclosed herein are an optical device and a base used for the optical device, the optical device of the present invention comprising a light transmittable base and a device constituent layer provided on the base, wherein the base includes, at least in a pixel formation region, continuously extending layers arranged to exhibit a cyclic refractive index distribution in the in-plane direction and to exhibit a specific refractive index in the thickness direction, and the base, on the device constituent layer side, has a surface roughness of 300 nm or less. Accordingly, the optical device having a long service life which is capable of extracting luminescence generated in an organic EL device from a light transmittable substrate to the external and of obtaining a high luminance even under low voltage drive and a base used for the optical device are achieved.

Abstract: A three dimensional optical circuit featuring an optical manifold for organizing, guiding and protecting individual optical fibers is shown. One aspect of the present invention is a three dimensional manifold which may be constructed using a rapid prototyping process such as, but not limited to, stereolithography (“SLA”), fused deposition modeling (“FDM”), selective laser sintering (“SLS”), and the like. The manifold has a number of input openings in a first ordered arrangement at one end connected by passageways to a number of output openings in a second ordered arrangement at the opposite end. A plurality of optical fibers may be directed through the passageways of the manifold to produce a three dimensional optical circuit such as a shuffle. Moreover, the optical manifold may be used in conjunction with a number of connections or terminations to form a various optical modules. These modules may be configured for rack mounting within enclosures for electrical components.

Abstract: A method of making a three dimensional optical circuit featuring an optical manifold for organizing, guiding and protecting individual optical fibers is provided. One aspect of the present invention is a three dimensional manifold which may be constructed using a rapid prototyping process such as, but not limited to, stereolithography (“SLA”), fused deposition modeling (“FDM”), selective laser sintering (“SLS”), and the like. The manifold has a number of input openings in a first ordered arrangement at one end connected by passageways to a number of output openings in a second ordered arrangement at the opposite end. A plurality of optical fibers may be directed through the passageways of the manifold to produce a three dimensional optical circuit such as a shuffle.

Abstract: An improved telecommunications link is provided which includes a dispersion managed fiber with smoothly varying dispersion. The dispersion map may vary sinusoidally or as a sawtooth, for example. The smoothly varying dispersion works well for high data rate transmissions in a return to zero signal format. The dispersion managed fiber with smoothly varying dispersion may be formed by a wide variety of techniques. A method of forming dispersion managed fiber by localized heating or cooling is also provided.

Abstract: A three dimensional optical circuit featuring an optical manifold for organizing, guiding and protecting individual optical fibers is shown. One aspect of the present invention is a three dimensional manifold which may be constructed using a rapid prototyping process such as, but not limited to, stereolithography (“SLA”), fused deposition modeling (“FDM”), selective laser sintering (“SLS”), and the like. The manifold has a number of input openings in a first ordered arrangement at one end connected by passageways to a number of output openings in a second ordered arrangement at the opposite end. A plurality of optical fibers may be directed through the passageways of the manifold to produce a three dimensional optical circuit such as a shuffle. Moreover, the optical manifold may be used in conjunction with a number of connections or terminations to form a various optical modules.

Abstract: A three dimensional optical circuit featuring an optical manifold for organizing, guiding and protecting individual optical fibers is shown. One aspect of the present invention is a three dimensional manifold which may be constructed using a rapid prototyping process such as, but not limited to, stereolithography (“SLA”), fused deposition modeling (“FDM”), selective laser sintering (“SLS”), and the like. The manifold has a number of input openings in a first ordered arrangement at one end connected by passageways to a number of output openings in a second ordered arrangement at the opposite end. A plurality of optical fibers may be directed through the passageways of the manifold to produce a three dimensional optical circuit such as a shuffle. Moreover, the optical manifold may be used in conjunction with a number of connections or terminations to form a various optical modules. These modules may be configured for rack mounting within enclosures for electrical components.

Abstract: A three dimensional optical circuit featuring an optical manifold for organizing, guiding and protecting individual optical fibers is shown. One aspect of the present invention is a three dimensional manifold which may be constructed using a rapid prototyping process such as, but not limited to, stereolithography (“SLA”), fused deposition modeling (“FDM”), selective laser sintering (“SLS”), and the like. The manifold has a number of input openings in a first ordered arrangement at one end connected by passageways to a number of output openings in a second ordered arrangement at the opposite end. A plurality of optical fibers may be directed through the passageways of the manifold to produce a three dimensional optical circuit such as a shuffle. Moreover, the optical manifold may be used in conjunction with a number of connections or terminations to form a various optical modules. These modules may be configured for rack mounting within enclosures for electrical components.

Abstract: An efficient redundant light distribution system includes redundant light generation enclosures providing light to a collector array 10, coupled to an ultraviolet to red converter 20, a combination array 30, a distribution array 40 and multiple projection lenses 4.

Abstract: Described is a polymer optical fiber including a section having a circular cross-section and a section having a non-circular cross-section. Also described are optical components containing such an optical fiber, as well as a method of fabricating such an optical fiber.

Abstract: The present invention pertains to a low noise, high sensitivity position sensing module. Fiber optic tapers are coupled to independent, optically and electrically isolated single element detectors. The detectors are optionally supported within a mounting plate on one side thereof and the fiber optic tapers are coupled to the detectors on the opposite side of the mounting plate. Since single element detectors are used, the active surfaces of the detectors are shielded both optically and electrically from each other. A laser rangefinder can be integrated with the position sensing module.

Abstract: An electro-optic display conveys partial images from a plurality of input surfaces to a display surface whose area is greater than or equal to that of the input surfaces together, such that the partial images communicated onto the input surfaces appear as an enlarged single image on the display surface. The display surface is made of tiles that are connected to a structural frame to allow contours. A micro-display communicates with each input surface, each micro-display corresponding in an ordered, one-to-one fashion with a tile of the display surface. The partial images are generated from a single image by an image segmenter.

Abstract: An optical filter includes an input optical fiber bundle and an output fiber bundle. Each of the bundles has one end having the fiber ends substantially two-dimensionally arrayed and another end substantially linearly arrayed. Each input fiber is configured to receive a portion of a two-dimensional input image at the two-dimensional end and transmit the image portion to the one-dimensional end. A spectrally dispersive element receives the image portions from the input fiber bundle and outputs a predetermined spectral component to the output optical fiber bundle at the one-dimensional end, transmitting the image portion to the two-dimensional end. The output fiber bundle two-dimensional ends are arrayed in corresponding fashion to the first ends of the input fibers for spatially reconstructing the input image.

Abstract: An apparatus for use in contoured architectural milieus includes a contoured large screen display having a mounting means to which modular flat display tiles including, tiles of diverse or non-standard shapes and sizes are attached, each display tile having a plurality of optical fibers affixed behind the tile and communicating with a front surface of the tile.

Abstract: An efficient tapered optical fiber bundle along with the method of manufacturing is presented. The tapered fiber bundle is fully fused to an induced shape with no interstitial space between fibers. To minimize fiber deformation and hence the tapered bundle's loss, the individual fibers are minimally deformed by positioning them in a fixture with predetermined geometry prior to fusion. The bundle could be optionally reshaped after fusion. The tapered bundle could then be used in its original form as a star coupler, or it could be cleaved and coupled to a multimode fiber, a multi-clad fiber, a cladding-pumped fiber, or an optical system to form an optical device. The resulting optical device has improved efficiency and lower loss compared with prior art devices.

Abstract: An optical system includes a coupling for transmitting light between one single fiber light guide and multiple single fiber light guides. The interface surfaces coupling the single fiber light guide to the multiple light guides have polygonal cross-sectional shapes, and the interface surface of the single fiber light guide is substantially covered by the interface surfaces of the multiple single fiber light guides. The single fiber light guide on one side of the coupling and the multiple single fiber light guides on the opposite side of the coupling each have a smoothly tapered contracting section extending away from the respective interface surfaces.

Abstract: A method and apparatus for reducing speckle during inspection of articles used in the manufacture of semiconductor devices, including wafers, masks, photomasks, and reticles. The coherence of a light beam output by a coherent light source, such as a pulsed laser, is reduced by disposing elements in a light path. Examples of such elements include optical fiber bundles; optical light guides; optical gratings; an integrating sphere; and an acousto-optic modulator. These various elements may be combined as desired, such that light beams output by the element combinations have optical path length differences that are greater than a coherence length of the light beam output by the coherent light source.

Abstract: A fiber optic display apparatus consists of a plurality of optical fibers which convey a projected image from an input, or first surface, to a display, or second surface, whose area is greater than or equal to that of the first surface, such that any image projected on to the first surface appears enlarged on the second surface. The second surface is comprised of tiles which attach to adjoining tiles by means of flexible tabs and pliable locator rods in such a fashion as to allow the second surface to follow general contours (e.g. concave or convex), while the optical fiber bundles from each tile are collected into a fixture to form the first planar surface. Because of the modular design of the display it can be assembled or disassembled rapidly.

Abstract: A multipitch optical fiber ribbon includes optical fibers that extend longitudinally and are laterally adjacent. The optical fibers are bonded together by bonding material having opposite first and second ends. A lateral first spacing is defined between adjacent optical fibers at the first end of the bonding material and a lateral second spacing is defined between adjacent optical fibers at the second end of the bonding material, and the first spacing is different from the second spacing. The bonding material includes a first segment at the first end of the bonding material and a second segment at the second end of the bonding material. The composition of the first segment of the bonding material can be the same as the composition of the second segment of the bonding material, or the first and second segments of the bonding material can have different compositions.

Abstract: The invention relates to a fibre optic routing board for routing a plurality of fibre optic cables. The fibre optic routing board is provided with one or more optical conductors disposed between a first lower laminate layer and a first upper laminate layer, the one or more optical conductors being connected to at least one of the optical fibres in the plurality of fibre optic cables, wherein at least one of the first lower laminate layer or the first upper laminate layer is so constructed that it attaches at least one of a jacket over a first. Advantageously, the fibre optic routing board additionally comprises a second laminate layer positioned between the first upper or lower laminate layer and the optical conductors. The use of a two layer laminate allows each of the laminate layers to have different properties.

Abstract: The present invention relates to an optical connection means arranged in order to rearrange and connect optical fibers connected to the connection means. In order to simplify handling of optical fiber ribbons, so-called fiber ribbons, an optical connection means with an integrated cross-connection (2) has been produced with which component optical fibers (3) connected to the component can be rearranged such as cross-connected and connected via an interface (4). With an optical cross-connection of the “sidings” type integrated with a so-called MT-connector interface from for example a four-fiber transmitter array and a four-fiber receiver array an eight-fiber MT-connector interface with alternate transmitter respective receiver fibers next to each other can be obtained.

Abstract: Apparatus and methods for light activation of hardenable materials, such as filling materials located on dental surfaces, through fiber optic funnels coupled to light guides. Light generated by a light unit is directed through a light guide and then concentrated by a fiber optic funnel to direct concentrated light to hardenable materials. The fiber optic funnels comprises bundles of fiber optic strands. The fiber optic funnels are able to concentrate light according to their respective tapers. The fiber optic funnels are coupled to light guides by couplers which can be either rigid or elastomeric such that the couplers can be coupled with a specific light guide or conform to light guides having different diameters. A coupler can also enable a fiber optic funnel to pivot.

Abstract: An apparatus for performing spatial and spectral analysis comprising a bundle of a plurality of chalcogenide glass fiber, an optical system for transmitting light received from the bundle, and a detector for receiving the light signal from the optical system for providing spatial and spectral analysis of the bundle image; maximum diameter of the fibers is about the size of the pixels on the detector.

Abstract: A fiber optic cable includes an end section in the form of a ribbon and a central section in which the sheath has a substantially tubular form. Applications include fiber optic cable connectors and spare lengths of fiber optic cable for jointing cassettes.

Abstract: A method and system for creating very thin displays producing virtual images based on extremely small "pinpoint" light sources. In an embodiment, a pinpoint light source is used in a manner analogous to a pinhole lens to magnify and view a displayed image up close. In another embodiment, an array of pinpoint light sources with or without intervening lenses is used to illuminate a spatial light modulator to produce an extremely thin virtual image display.

Abstract: A fiber optic sensor is provided which is useful for detecting impact, pressure or other forces, and has particular application in detecting the presence of a foreign object in an electronically operated vehicle window including a motor, a frame and a window pane movable in the frame between an open and a closed position. The sensor comprises a fiber optic having one end connected to a light source, with the other end being connected to a detector. In the fiber optic, there is located a sensing portion fiber which is preferably located in the frame of the window so as to modulate light traveling in an optical path in the fibre optic in response to detection of the foreign object which comes into contact therewith. The sensor further comprises a signal propagating means for transmitting a signal to the motor when the optical path is modulated so as to stop or reverse the motor.

Abstract: A fiber-optic arrangement for additive mixing of a plurality of light bundles comprises individual light-conducting cores for guiding laser light bundles independently and separately from one another, wherein each of the cores has a light entry location and a light exit location. The light-conducting cores are enclosed by a common cladding and are arranged so as to run alongside one another within said cladding. Propagation directions of the light bundles are identical in all cores. Light exit locations of all cores are arranged in a common plane oriented at a right angle to the propagation direction. The lateral distance between every two cores at the light exit locations are smaller than the lateral distance between the same cores at the light entry locations.

Abstract: The present invention teaches a diode laser system which utilizes optical fibers arranged in bundles whereby one group is bundled in a central section and one or more groups are arranged in a concentric circle or other symmetrical shape or configuration around the central bundle. Variable power ranges and power densities are transmitted from the different groups as required for a particular medical or industrial application. The effect is to deliver a focused output of power density in the desired range. Alternatively, the diode laser system can use sets of lenses, prisms, other optical elements to focus output from groups of diode laser emitters to a treatment site or treatment optical fiber as required for a particular medical or industrial application. The diode laser system may also be programmed to utilize varying bundles of fibers for less than maximum power output so as to maximize the overall usable lifetime of the system.

Abstract: A color image sensor has a white fluorescent tube as a light source, a microlens array with three rows of microlenses arranged vertically, a three-layer optical waveguide array and a three-line color CCD with color filters. The waveguides in each waveguide array layer are bent so that the interval between successive waveguides becomes narrower from the input end toward the output end. The three-line color CCD has three lines of light-receiving elements (photodiodes) as the light sensing portion. These lines in the light-receiving element array are arranged vertically at the same intervals as the waveguide layers are arranged. Further, a cylindrical lens is attached to cover the microlens array. Because of the presence of this cylindrical lens, the images of light beams incident on different microlenses of the microlens array corresponding to different waveguide layers are the same image from an identical area on the original.

Abstract: The optical scanner comprises a light source, an image sensor, a planar array of elongate optical waveguides, and input and output coupling optics for communicating light to and from the image transmission optics. The light source is adapted to direct light toward and reflect light from an object to be scanned. The planar array of elongate optical waveguides is formed in a substrate. Each of the waveguides include an input end and an output end and can be tapered along the length of the waveguide. The input optics disposed between the object and the waveguide array can include tubes, single lenses per waveguide, larger lenses per cluster of waveguides, a GRIN lens array or comparable mirror systems for directing light reflected from the object to be scanned to the input ends of the waveguides. The output optics disposed between the waveguide array and the image sensor can include lenses or mirror systems similar to that used for the input coupling optics.

Abstract: A fiber optics device of this invention includes first and second assemblies. The first assembly is obtained by integrating a plurality of optical fibers by bundling, and has first and second end faces formed obliquely to the optical axis of the optical fibers contained in it. The second end face has small recesses and projections to scatter light emerging from it. The second assembly is obtained by integrating a plurality of optical fibers by bundling, and has first and second end faces substantially intersecting perpendicularly to the optical axis of the optical fibers contained in it. The first end face of the second assembly is bonded to the second end face of the first assembly. As a result, an optical loss occurring at the bonding portion between the assemblies can be decreased.

Abstract: A fiber optic interface for laser spectroscopic Raman probes incorporating a housing with a window enclosure. The fiber optic interface minimizes stray light interference from window back reflections and provides high photonic efficiency through refractive manipulation of emission and reception fields. The illumination fiber is surrounded by collection fibers. The fiber bundle formed by the illumination fiber and the collection fibers is formed into a conical shape, which creates a refractive surface on the illumination fiber and each of the collection fibers. The refraction at the end faces steers the illumination and collection patterns toward the axis of the illumination fiber. This results in the reflected portion of the illumination light being reflected toward the illumination fiber, and in the collection pattern being coincident with the illumination pattern.

Abstract: A fiber optics device of this invention includes first and second optical members. The first optical member is obtained by integrating a plurality of optical fibers of the first type by bundling, and has first and second end faces formed obliquely to the optical axis of the optical fibers of the first type and parallel to each other. The second optical member is obtained by integrating a plurality of optical fibers of the second type by bundling, and has first and second end faces formed obliquely to the optical axis of the optical fibers of the second type and parallel to each other. The optical fibers of the second type have a larger numerical aperture than that of the optical fibers of the first type. The first end face of the second optical member is bonded to the second end face of the first optical member.