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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 7421212 | Detecting and locating pulses using a Bragg cell Detecting a pulse of a signal includes receiving the signal and a light beam. The signal drives a spatial light modulator to modulate the light beam, where the complex amplitude of the modulated light beam is proportional to the signal current. The modulated light b... | 09/02/2008 |
| 7295153 | Acousto-radio frequency modulator and applications therefore An acousto-radio frequency modulator and an apparatus employing the same are disclosed. The acousto-radio frequency modulator includes a radiowave waveguide including a first end defining an input and a second end defining an output; an acousto-radio material positi... | 11/13/2007 |
| 7283290 | Acousto-optic devices having highly apodized acoustic fields and methods of forming the same An acousto-optic (AO) device for generating a highly apodized acoustic wave field includes a piezoelectric transducer crystal for emitting an acoustic wave having a ground electrode disposed on one side of the piezoelectric crystal, and a patterned electrode layer d... | 10/16/2007 |
| 7209607 | Optical space-switching matrix Optical switch matrix having at least an input matrix port defining at least a row of the matrix, a plurality of output matrix ports defining columns of the matrix, a plurality of switching elements, each one being disposed at the intersection of at least one row an... | 04/24/2007 |
| 7206120 | Dynamic beam splitter outputting a selectable number of beams A dynamic beam splitter including a beam deflector having a plurality of operative regions, the beam deflector being operative to receive a laser beam at a first one of the plurality of operative regions, the laser beam passing through the beam deflector, and to sel... | 04/17/2007 |
| 7105985 | Megasonic transducer with focused energy resonator A transducer comprised of a resonator and a piezoelectric crystal for cleaning single items such as semiconductor wafers and flat panel displays. The resonator is an elongated piece of material having a cross section that is trapezoidal in shape. The parallel sides ... | 09/12/2006 |
| 7046266 | Scanner system A method of scanning for writing a pattern on a surface, including providing a scanning beam comprised of a plurality of independently addressable sub-beams, scanning the surface with the scanning beam a plurality of times, the sub-beams scanning the surface side-by... | 05/16/2006 |
| 6953271 | Indicator lamp comprising an optical device for recovering and distributing the light flux towards an annular reflector The invention proposes an indicator lamp comprising an optical axis oriented from the rear to the front, on which there is a light source which is provided for emitting a light flux towards the front, and of the type comprising an optical device for recovering and d... | 10/11/2005 |
| 6909853 | Apparatus for transferring monitor signals in photo-transfer system An apparatus for transferring monitor signals, which apparatus receives a primary signal, and a secondary signal for monitoring a wavelength, and outputs the primary signal and the modulated secondary signal. The apparatus includes an optical coupler to which the pr... | 06/21/2005 |
| 6771412 | Acousto-optical devices The present invention relates to acousto-optic applications of parametric optical apparatuses that use the mechanical energy of elastic oscillations to convert light over a wide range of wavelengths and amplitudes and to generate coherent light. ... | 08/03/2004 |
| 6674564 | System, method and article of manufacture for a beam splitting acousto-optical modulator A system, method and article of manufacture is disclosed that provides an improved, more efficient, laser beam modulator and splitter. The combined device includes a crystal with a horizontal cross-sectional shape of a pentagon. The crystal includes a top... | 01/06/2004 |
| 6333808 | Optical signal scrambling An optical signal scrambler (18) has an optical phase modulator (22) which has a common input/output for an optical signal. The modulator also has an input for a modulating signal and a common output/input which is coupled to a 45° Faraday mirror (24). T... | 12/25/2001 |
| 6052215 | Index-guided solid acoustic traveling wave lens A solid state acoustic travelling wave lens comprises a thin core layer of acoustic and light transmissive material, such as crystalline quartz, compression-bonded between a pair of outer or cladding layers, such as fused silica, having an acoustic veloci... | 04/18/2000 |
| 6043924 | Constant power density acoustic traveling wave lens An acoustic traveling wave lens structure for an acousto-optic scanner comprises a confined height fluid-containing channel, upon which a scanned optical beam to be modulated by a acoustic traveling wave is incident. The channel is bounded by spaced-apart... | 03/28/2000 |
| 5973822 | Acousto-optic tunable filter and method of calculating its equivalence incident angle In a non-collinear type acousto-optic tunable filter, the incident angle of a source light beam L1 radiated from a light source 6 onto an acoustic medium 1 is set at an equivalence incident angle for which the wavelength λi of the d... | 10/26/1999 |
| 5929893 | Multi-channel acousto-optic spatial modulator A multi-channel acousto-optic spatial modulator for fast signal processing by a plurality of acousto-optic modulating cells connected in a line. The multi-channel acousto-optic spatial modulator in accordance with the present invention comprises a plurali... | 07/27/1999 |
| 5652673 | Elimination of modulated interference effects in photoelastic modulators Modulated interference effects arising when laser beams are modulated by photoelastic modulators are substantially eliminated by methods and apparatus that extract from the detected beam the modulated, interfering light that emanates from the optical elem... | 07/29/1997 |
| 5517349 | Process and a device for error correction in acousto-optic deflection of light beams, particularly of laser light A process and a device for compensating wave-front errors occurring in acousto-optical deflectors, with at least one auxiliary deflector which produces a deflected beam whose geometry is independent of the deflection angle and which counteracts the depend... | 05/14/1996 |
| 5361159 | Angular acousto-optical deflection device and spectrum analyzer using such a device Devices for deflecting an optical beam under the action of an ultrasonic beam propagating in a block of active acousto-optical material and operating under Bragg tangential conditions, with the acousto-optical interaction being anisotropic. The devices al... | 11/01/1994 |
| 5329397 | Acousto-optic tunable filter An electronically tunable optical filter utilizing noncollinear acousto-optic interaction in an acoustically anisotropic, optically birefringent crystal. The directions of optical and acoustic waves are chosen so that the optical ray is collinear with the... | 07/12/1994 |
| 5264957 | Electrically controlled multiple dispersion (zoom) device The optical device can examine a spectrum at low resolution and subsequently choose a portion of that spectrum to be examined at higher resolution, using a single detector array for both spectra. The latter spectrum can be chosen to be arbitrarily anywher... | 11/23/1993 |
| 5249196 | Internally folded scalable laser An internally folded scalable laser has a gain medium with an internal face nd an external face and at least one internal-fold face subtending an angle which may be about 90°. An output coupler that is partially reflective of the resonator mode is oriente... | 09/28/1993 |
| 5122898 | Acousto-optical deflector An acousto-optical deflector disclosed, comprising, two crystals and two piezoelectric transducers associated respectively with the crystals and controlled by a variable frequency RF signal for generating, in the crystals, ultrasonic waves of the same fre... | 06/16/1992 |
| 5101294 | Surface acoustic wave optical modulator An acousto-optic modulator is described which comprises a first support layer and a second layer of piezoelectric semiconductor material disposed over the support layer. The second layer includes a plurality of active sublayers, each active sublayer havin... | 03/31/1992 |
| 4759613 | Acousto-optic modulator An acoustooptic modulator for generating a modulated diffracted beam 14 from a laser beam 10 by refractive Bragg diffraction from a longitudinal compressional acoustic wave directed into a germanium block 21 by a transducer 2. By tilting the end face 26, ... | 07/26/1988 |
| 4720177 | Tunable acousto-optic filter utilizing internal mode conversion An electronically tunable optical filter utilizing noncollinear acousto-optic interaction in a birefringent crystal. Light is diffracted by a secondary acoustic wave generated from a primary acoustic wave by mode conversion at an internal surface of the b... | 01/19/1988 |
| 4685772 | Tunable acousto-optic filter with improved spectral resolution and increased aperture A transverse configuration, electronically tunable acousto-optic filter assembly with improved spectral resolution and increased aperture. The crystal prism member is made of TeO2 and has a large prism angle (i.e., close to 90 degrees). An acou... | 08/11/1987 |
| 4671620 | Phased-array acousto-optic Bragg cell An acoustical phased array having improved interaction efficiency and efficiency-bandwidth product. The array includes a body of acousto-optical material having one face grooved to form a number of sets of plane parallel surfaces, each set having n differ... | 06/09/1987 |
| 4659184 | Acoustic optical light modulator An acoustic optical light modulator comprising a hexahedral ultrasonic wave media having a bottom and two sides perpendicular to the bottom, an ultrasonic wave generator attached to the bottom and controlled by a high frequency oscillator connected theret... | 04/21/1987 |
| 4637689 | Acoustically resonant tunable acousto-optic filter An acoustic resonant structure for use in a tunable acousto-optic filter to reduce drive power requirements. The undesirable ripples in the tuning bandpass response due to acoustic resonance is minimized by reducing the effective finesse of the filter.... | 01/20/1987 |
| 4592621 | Acoustooptic modulation element and system for acoustooptically carrying out modulation of a plurality of parallel beams by the use of a single acoustooptic medium Responsive to a plurality of parallel light beams and electric signals corresponding to the parallel light beams, an acoustic modulation element produces output light beams modulated by acoustic waves resulting from the electric signals. The element compr... | 06/03/1986 |
| 4591241 | Acousto-optical spectrum analyzer The invention relates to an acousto-optical device comprising a laser source, positioned in the vicinity of the center of curvature of a spherical cap, formed from an elasto-optical, piezoelectric substrate. A piezoelectric transducer deposited on this su... | 05/27/1986 |
| 4549789 | Light beam deflector emitting a pair of output light beams on planes intersecting to each other In a light beam deflector comprising an acoustic medium supplied with an incident light beam along an optical axis to selectively emit a pair of first-order diffracted output beams and first and second transducers selectively energized by an electric sign... | 10/29/1985 |
| 4527866 | Acousto-optic transducer A spectrum analyzer incorporates a 36° Y cut lithium niobate Bragg cell provided on one face with an interdigital transducer. The 36° Y cut maximizes the ratio of quasi-longitudinal to quasi-shear wave piezoelectric coupling with the interdigital transd... | 07/09/1985 |
| 4381887 | Simplified acousto-optic deflector using electronic delays An acousto-optic deflector having a plurality of transducers formed on a planar surface of the acousto-optic medium wherein the incident laser beam is maintained at the Bragg angle as the deflection angle is changing by utilizing electronically introduced... | 05/03/1983 |
| 4319808 | Combined acousto-optic device from optically birefringent crystal Combined acousto-optic device formed by a cut from optically birefringent single crystal whose one face, parallel to the direction of the principal crystallographic axis, is provided with at least one piezoelectric source of acoustic waves. At that, the n... | 03/16/1982 |
| 4299448 | Acousto-optic device A single crystal of pure or mixed univalent mercury halide, is formed to have a pair of opposite faces polished for entrance and exit of the light wave at least one of the faces of this pair is perpendicular to a direction inclined about a crystallographi... | 11/10/1981 |
| 4257685 | Acousto-optic device A single crystal of pure or mixed univalent mercury halide, which is formed having a pair of opposed polished faces at least one of which is perpendicular to a direction which is inclined from the optical axis of the crystal about the crystallographic dir... | 03/24/1981 |
| 4232952 | Acousto-optic device A single crystal of pure or mixed univalent mercury halide is formed having a first face perpendicular to the direction [A] which is inclined about the crystallographic direction [110] by an angle . The crystal is simultaneously inclined from the c... | 11/11/1980 |
| 4040722 | Light beam controller An acousto optical diffraction cell, capable of passing polychromatic radiation and useful in a high speed, high intensity character generator. A monoclinic prism behaves like a parallel plate of glass when deenergized, and diffracts light under Bragg ang... | 08/09/1977 |
