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| Number | Title | Issue Date |
| 8144737 | Adjustable pulsewidth picosecond fiber laser A pulsed fiber laser generating light pulses in the picosecond range has an adjustable pulsewidth. The fiber laser includes a figure-of-eight type laser cavity, preferably of polarization-maintaining optical fiber, defining reciprocal and non-reciprocal loops. A gai... | 03/27/2012 |
| 8081797 | Selective and adaptive illumination of a target There are provided a method and a system for illuminating one or more target in a scene. An image of the scene is acquired using a sensing device that may use an infrared sensor for example. From the image, an illumination controller determines an illumination figur... | 12/20/2011 |
| 8073027 | Digital laser pulse shaping module and system A digital pulse shaping module for controlling a pulsed laser oscillator according to a digital input waveform is provided. The pulse shaping module includes a clock generator generating a plurality of phase-related clock signals and a shape generator which outputs ... | 12/06/2011 |
| 7586678 | Optical imaging system for obtaining multi-field-of-view image High-resolution imaging systems are provided. In one embodiment, an imaging system based on a Cassegrain or Schmidt-Cassegrain objective, with coaxial primary and secondary mirrors, is provided with a microdisplacement mechanism acting on the secondary mirror to dis... | 09/08/2009 |
| 7554652 | Light-integrating rangefinding device and method A rangefinding device and a method for determining the range of an object from a rangefinding device are provided. A train of light pulses each having an emission time and a pulse duration is generated. The pulse duration is set to twice the round-trip time to a max... | 06/30/2009 |
| 7439513 | Fast microbolometer pixels with integrated micro-optical focusing elements Fast microbolometer pixels integrating micro-optical focusing elements are provided. Each microbolometer pixel includes a focusing element located between the pixel body and a substrate, this focusing element preferably sending radiation back towards the central por... | 10/21/2008 |
| 7388662 | Real-time measuring of the spatial distribution of sprayed aerosol particles An optical system for measuring in real-time the spatial distribution of aerosol particles, such as pesticides or the like, sprayed from a vehicle over an agricultural field. An optical sensor is mounted directly on the vehicle and sends an excitation light beam thr... | 06/17/2008 |
| 7260131 | Symmetrization device and laser diode system provided with the same A symmetrization device and laser diode system using such a device is shown. The device has adjacent lens components transforming beamlets from a laser diode array. Each lens component has input and output surfaces, each having a profile in the propagation direction... | 08/21/2007 |
| 7209605 | Packaged optical sensors on the side of optical fibers The present invention concerns an optical sensor located on a preferred azimuthal portion of the side of an optical fiber. An optical fiber having two opposite ends, a core and a cladding and at least one sensing area is disclosed. Each of the sensing areas is locat... | 04/24/2007 |
| 7088493 | Light modulating microdevice A light modulator comprises a mirror, a substrate provided with at least one electrode, and at least one hinge extending between the substrate and the mirror. The mirror is flexible with the hinge being displaceable for allowing for the displacement and/or the defor... | 08/08/2006 |
| 7077969 | Miniature microdevice package and process for making thereof The present invention is concerned with a miniature microdevice package and a process of making thereof. The package has a miniature frame substrate made of a material selected from the group including: ceramic, metal and a combination of ceramic and metal. The mini... | 07/18/2006 |
| 7062125 | Prismatic reflection optical waveguide device A prismatic reflection optical waveguide device having an input and an output optical waveguide segments and a reflection interface provided therebetween apt to convey a light beam from one direction to another, wherein the light beam is conveyed by a single reflect... | 06/13/2006 |
| 7058269 | Reconstructed glass for fiber optic applications The present invention concerns a preform for an optical fiber, an optical fiber so obtained and methods for making the same. The fiber is characterized in that porous glass doped with at least one dopant is used. Resulting fibers can be used to make high attenuation... | 06/06/2006 |
| 7023001 | Method for engraving materials using laser etched V-grooves Disclosed is a method for engraving materials such as fused silica or ceramic by continuously actuating a laser producing a Gaussian beam, directing the beam towards the surface of the substrate and moving the beam relative to the surface of the substrate so that a ... | 04/04/2006 |
| 6849170 | Process for making microdevice with movable microplatform A process for making a microdevice that includes the steps of providing a base member and selectively electroforming a support member for supporting a microplatform with respect to the base member. The process also includes the steps of selectively electroforming th... | 02/01/2005 |
| 6795611 | Light coupling between a light source and an optical waveguide A coupling technique for the side coupling of light from a light source into a waveguide is provided. A transversal groove is made into a section of the waveguide, extending into the target light guiding region. A coupling element is coupled to the light source at o... | 09/21/2004 |
| 6780570 | Method of fabricating a suspended micro-structure with a sloped support The method of fabricating a suspended microstructure with a sloped support, comprises the steps of (a) providing a member having three stacked up layers including a first substrate layer, a second temporary layer and a third photoresist layer; (b) photolithographica... | 08/24/2004 |
| 6751387 | Microporous glass waveguides doped with selected materials The present invention concerns waveguides made from porous glass which have been doped with certain selected materials which exhibit optical properties. In the context of the invention, the selected materials are optical materials which exhibit optical activity or a... | 06/15/2004 |
| 6714283 | Sensor and method for range measurements using a TDI device A sensor and method for taking range measurements of a target object using a TDI device as a detector are provided. The device is positioned to detect reflections of a structured light beam on the target object. To avoid losing the range information in the TDI proce... | 03/30/2004 |
| 6650413 | Linear spectrometer A linear spectrometer for spectrally measuring an optical signal. The spectrometer has an input receiving the signal which is then diffracted onto a diffraction grating. The signal is therefore divided into its spectral components, each component being di... | 11/18/2003 |
| 6643066 | Tunable phase mask assembly A tunable phase mask assembly for use in photoinducing an optical wavelength filter in an optical waveguide. The phase mask assembly includes a phase mask having a length extending between two opposite longitudinal ends. The phase mask has grating corruga... | 11/04/2003 |
| 6633656 | Microthermistor based fingerprint sensor The present invention concerns a fingerprint sensor which is small; demonstrates high sensitivity, low power consumption, high data acquisition rate and is insensitive to vibration and pressure. The sensor produces a high contrast fingerprint representati... | 10/14/2003 |
| 6631024 | Method for the fabrication of patterned poled dielectric structures and devices The present invention concerns a method for fabricating a patterned, poled dielectric structure, comprising the steps of providing a material, patterning a periodic pattern into a first surface, applying an electrode to the first surface, and applying a v... | 10/07/2003 |
| 6597831 | Linear wavelength DWDM The present invention concerns a linear wavelength DWDM that is compact and is adapted for use with fibre ribbons and which compensates for the non-linear relationship between equally spectrally spaced wavelengths and physically spaced wavelengths once th... | 07/22/2003 |
| 6590665 | Optical sensing devices An optical sensor is provided. The sensor includes an optical fiber having a free extremity on which a polymer layer is deposited normal to the longitudinal axis. A light source injects a analytical light beam in the fiber, which is reflected by the polym... | 07/08/2003 |
| 6549683 | Method and apparatus for evaluating a scale factor and a rotation angle in image processing The present invention concerns a method for evaluating a scale factor and a rotation angle in image processing and more particularly digital image processing. The method includes the steps of first providing an input image, and then reducing the input ima... | 04/15/2003 |
| 6545808 | Phase mask with spatially variable diffraction efficiency A phase mask (15) for modulating a collimated light beam passing therethrough, the light beam being diffracted to photoinduce a refractive index profile in a photosensitive optical medium, the phase mask (15) comprises a substrate (17) having an outer sur... | 04/08/2003 |
| 6510266 | Tunable optoelectronic frequency filter A wavelength tunable optolelectronic device. Two channel waveguides are provided in an optoelectronic structure made of a ferroelectric material. The waveguides are adjacent along at least a coupling region. A periodically poled structure is provided in t... | 01/21/2003 |
| 6498888 | High-attenuation fiber with cladding mode suppression for all-fiber optical attenuator Disclosed is an optical device which combines a controlled level of attenuation, a high degree of wavelength insensitivity and a substantial decrease in modal interference problems. The optical device has a core having a core diameter and a core refractiv... | 12/24/2002 |
| 6437886 | Device and method for recording an interference pattern in a photosensitive medium A device and method for recording holographic gratings by the use of a single illuminating beam, two diffraction gratings, light detectors and a slit-scanning system. The beam illuminates two slits that then define two beams that are incident on the grati... | 08/20/2002 |
| 6424762 | Superfluorescent fiber source A low-cost superfluorescent fiber souce. A gain medium in a length of optical fiber is pumped in counter-propagation by a pump source, producing superfluorescent radiation. The pump source is coupled to the fiber by a first coupler, disposed forward of th... | 07/23/2002 |
| 5962909 | Microstructure suspended by a microsupport The microbridge structure comprises a substrate layer provided with two first electrical contacts, a microstructure provided with two second electrical contacts, and a micro support for suspending the microstructure over and at a predetermined distance fr... | 10/05/1999 |
| 5518863 | Method of changing the optical invariant of multifiber fiber-optic elements The multifiber fiber-optic element for use in image transfer comprises a large number of packed optic fibers cemented together at least at the ends, and microlenses formed on at least one of the two end facets of the fibers, whereby the optical invariant ... | 05/21/1996 |
