ELBIT SYSTEMS ELECTRO-OPTICS ELOP LTD.
|ELBIT SYSTEMS ELECTRO-OPTICS ELOP LTD. Patent applications|
|Patent application number||Title||Published|
|20120099203||OPTICAL DEVICE AND METHOD FOR CORRECTING CHROMATIC ABERRATIONS - Imaging device and method, the device including receiver optics, a diffractive and focusing surface, and a pair of diffractive and focusing arrangements, the receiver optics receiving radiation including a first wavelength selected from a first spectral band, and a second spectral band, where the first wavelength is substantially a multiplicative factor less than the midpoint of the second spectral band, the diffractive and focusing surface diffracting the first wavelength at an order of diffraction substantially equal to the multiplicative factor, and diffracting the second spectral band at a first order of diffraction, each of the diffractive and focusing arrangements diffracting, in turn, the first wavelength at a first order of diffraction, such that the first wavelength and the second spectral band emanating from the second diffractive and focusing arrangement focuses at a substantially common focal length and at a substantially common focal plane width.||04-26-2012|
|20110261440||MODULATION OF FIBER LASER PUMPED DIFFERENCE FREQUENCY GENERATOR - Systems and methods for modulating the output of a difference frequency generator such as an OPO, OPA or OPG include a pump fiber laser having at least one internal, directly modulatible component, wherein the pump fiber laser produces a pump signal, and a difference frequency generator coupled to the pump fiber laser. The difference frequency generator is configured for accepting the pump signal of the pump fiber laser and producing an output signal, wherein parameters of the output signal are determined based on direct modulation of the internal, directly modulatible component of the pump fiber laser.||10-27-2011|
|20110242645||SYSTEM AND METHOD FOR CONTROLLING OPTICAL OUTPUT OF A FREQUENCY CONVERSION DEVICE - A system and method for improving conversion efficiency of a difference frequency generator (DFG) and/or for outputting a desired shape of the output signal, where the method includes providing a pump source, modifying the pump pulse temporal shape for optimal DFG conversion efficiency, and providing the modified pump pulse to the DFG. The pump source may be, for example, a MOPA laser or a diode or any other suitable source. In one embodiment, the pump pulse shape is modified such that an initial gain within the DFG is high, followed by a lower level signal for efficient conversion within the DFG. An example of such a shape is a double square pulse. Other configurations are possible as well such as a single rectangular pulse shape.||10-06-2011|
|20110134946||LENGTHENING THE PATH OF A LASER BEAM IN A MONOLOTHIC SOLID STATE LASER APPARATUS - A solid state laser device is provided. The active element has a double slope portion defining a right angle between the slopes, wherein the pump light beam is directed into one of the slopes, and wherein an output coupler configured to output a laser beam from the active element is located on a portion of the active element, opposite of the double slope portion, the double slope portion is configured such that the laser beam travels at least twice along the long axis of the active element; and a second double slopes portion located at the edge opposite of the first double sloped portion, wherein the second double slopes portion is perpendicular to the first double slopes portion, and wherein the second double slopes portion is configured such that the laser beam travels back and forth along the long axis of the active element at least one more time.||06-09-2011|
|20110134945||LENGTHENING THE PATH OF A PUMP BEAM IN A MONOLOTHIC SOLID STATE LASER APPARATUS - A solid state laser device with a lengthened pump beam path is provided herein. The laser device includes an active element having a specified geometric shape, specified optical characteristics, and further configured for lasing; and a light pumping element optically coupled to the active element, wherein the light pumping element is configured to generate a pump light beam directed at a specified angle into the active element, and wherein at least one of: the specified angle, the specified geometric shape, and the specified optical characteristics are selected such that the pump light beam is reflected one or more times within the active element resulting in an extension of an absorption path of the pump light beam within the active element.||06-09-2011|
|20110096320||LASER OBSTACLE RANGING AND DISPLAY - Apparatus, for detecting at least one object and preventing receiver burn-out, mounted on a vehicle, including a laser and at least one receiver, the receiver being coupled with the laser, the laser for transmitting a beam of light and the receiver for detecting reflections of the beam of light from the object, the laser including at least one signal diode, a commutator, a power supply signal diode driver, a circulator, an erbium doped fiber (EDF), a wavelength division multiplexer (WDM), a narrow band Bragg reflector, a first fiber pump diode, an output combiner and a second fiber pump diode, the commutator being coupled with each signal diode and the power supply signal diode drive, the circulator being optically coupled with each signal diode, the EDF and the output combiner, the WDM being optically coupled with the EDF, the narrow band Bragg reflector and the first fiber pump diode and the second fiber pump diode being optically coupled with the output combiner, each signal diode generating a beam of light distinct from one another, the power supply signal diode driver for supplying energy to each signal diode, the circulator for directing the beam of light in at least one of at least two different directions, the EDF for amplifying the beam of light thereby producing an amplified beam of light, the narrow band Bragg reflector for reflecting only the amplified beam of light through the EDF a second time, thereby producing a double amplified beam of light and the first fiber pump diode and the second fiber pump diode for pumping the EDF, wherein the WDM and each of the signal diodes are located on opposite sides of the EDF, wherein the output combiner outputs the beam of light, wherein the commutator enables each signal diode, one at a time, to draw a predetermined amount of energy from the power supply signal diode driver, wherein one signal diode generates a low energy beam of light and another one generates a high energy beam of light, wherein the low energy beam of light is transmitted by the output combiner before the high energy beam of light, and when the low energy beam of light is detected by the receiver, and the energy level of the low energy beam is above a predetermined threshold, the high energy beam of light is not transmitted.||04-28-2011|
|20110050548||HEAD UP DISPLAY UTILIZING AN LCD AND A DIFFUSER - Head up display (HUD) for displaying a combined image of a scene image of a scene and an informative image, for an observer, the HUD including an image source, an optical relay, a low physical height horizontally expanding optical assembly and a planar optical module, the image source for producing a substantially small narrow angle informative image, the optical relay for producing a substantially large narrow angle informative image, by enlarging the substantially small narrow angle informative image, received from the image source, the low physical height horizontally expanding optical assembly for producing a horizontally expanded image, by horizontally expanding the substantially large narrow angle informative image, received from the optical relay, and the planar optical module for producing a substantially large informative image, by vertically expanding the horizontally expanded image, and further producing the combined image, by combining the substantially large informative image with the scene image.||03-03-2011|
|20110038579||FIBER LASERS - A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second fiber which is a double clad fiber, and a bulk optic component positioned between the first and second fibers. At least one mode stripper is positioned between the first fiber entry port and the second fiber exit port providing for limiting and removal of propagating clad light.||02-17-2011|
|20100107761||VIBRATORY GYROSCOPIC DEVICE FOR DETERMINING ANGULAR VELOCITY - A vibratory gyroscopic device to determine the rotation rate of an object and method of manufacturing thereof, the device including a plurality of supporting springs arranged in pairs to exhibit bilateral symmetry via each pair (i.e., mirror-image symmetry) relative to each other such that the asymmetries in the characteristics of the ring (e.g., resonant frequency, response to angular velocity), caused by asymmetries in the structure of the ring, are reduced.||05-06-2010|
|20100060990||WIDE FIELD OF VIEW COVERAGE HEAD-UP DISPLAY SYSTEM - Head-up display scenery alignment system, the head-up display being mounted in an aircraft and including an image projector and a combiner. The combiner is optically located between a user and a scenery of interest, optically transmitting a scene image of the scenery of interest to the user. The image projector projects an image toward the combiner, and the combiner reflects the image toward the user. The aircraft includes a heading angle sensor, determining the heading angle of the aircraft. The HUD scenery alignment system includes a moving mechanism coupled with the combiner; and a processor coupled with the heading angle sensor, with the moving mechanism and with the projector. The processor receives heading angle information from the heading angle sensor, and the processor determines the deviation of the heading of the aircraft from the longitudinal axis of the aircraft according to the heading angle information. The processor directs the moving mechanism, according to the deviation, to move the combiner to a position which is located between the scenery of interest and the user and which aligns the reflection of the image toward the user, with the scene image.||03-11-2010|
|20080219300||High Power Fiber Laser - Fiber laser (||09-11-2008|
Patent applications by ELBIT SYSTEMS ELECTRO-OPTICS ELOP LTD.