Matches 151 - 200 out of 245 < 1 2 3 4 5 >


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5933269 Common-lens reflective magneto-optical switch  
A magneto-optical switch having three or more ports and two or more lenses, in which at least two ports share a common lens. In one embodiment, the switch has three ports and two lenses, where two...
5912773 Apparatus for spatial light modulator registration and retention  
A method and apparatus for adjusting spatial light modulators in an imaging system. The apparatus includes several screws, plungers and pins connecting to a housing. When the screws and plungers...
5879824 Magnetostatic wave device and material for the same  
A magnetostatic wave device comprising a magnetic garnet single crystalline film having a general formula of R3-x Cax Ma5-2y+x Zry Mby-x O12 wherein R is at least one of Y, La, Bi, Gd, Lu and Sc,...
5867314 Structure of optical passive device and assembling method therefor  
A hollow magnetic member includes a plurality of separate magnetic pieces. A parting surface between such pieces is defined by a plane parallel to or defining an angle of not more than forty-five...
5840140 Method for making a microceramic optical shutter  
A method of making a microceramic optical shutter includes forming a sacrificial stator member and inserting the sacrificial stator member into the bottom ceramic portion in the green state, a top...
5739942 Microceramic optical shutter  
A microceramic optical shutter includes a unitary ceramic body which has been formed with first and second internal cavities, a coil structure formed in the first internal cavity and a...
5736856 Method and apparatus for performing magnetic field measurements using magneto-optic Kerr effect sensors  
A sensor system includes a magneto-optic Kerr effect magnetic field sensing element and an optical system including a light source, at least one polarizer or polarizing element and a detector...
5734493 Optical frequency conversion device  
A device for converting the frequency of an optical signal to form a frequency comb having a plurality of frequency spaced optical carriers. In one embodiment, a magnetooptic frequency conversion...
5640516 Faraday rotator  
A Faraday rotator which comprises, in combination, a garnet material of an atomic ratio composition Bix Py Q3-x-y Fe5-w Mw O12in which P is one or more elements chosen from among Y, La, Sm, Eu,...
5627924 Article comprising a non-mechanical optical fiber switch  
A novel non-mechanical optical fiber switch contains a magneto-optic element and a tubular magnet. The magneto-optic element is disposed within the field of the magnet but outside of the magnet...
5601935 Surface magnetostatic wave device  
A surface magnetostatic wave device includes an Fe-containing garnet single crystal film grown on a gadolinium gallium garnet substrate. The crystallographic plane azimuth of the gadolinium...
5585159 Recording medium capable of suppressing resonance from recording and reproducing devices  
A recording medium includes a transparent substrate and a recording layer formed thereon for recording information, and a component made of material with a large loss factor, such as butyl rubber,...
5566017 Material for magneto-optical element and faraday rotator using the same  
Disclosed is a material for a magneto-optical element, which is made of magnetic garnet single crystals being wide in a band width in a 1310 nm band and thereby being capable of coping with the...
5535046 Faraday rotator  
A Faraday rotator in which a portion of a rare-earth iron garnet single crystal film is exposed to a localized magnetic field to control hysteresis. In one embodiment, the field is applied by a...
5512193 Low saturated magnetic field bismuth-substituted rare earth iron garnet single crystal and its use  
A bismuth-substituted rare earth iron garnet single crystal grown on a non-magnetic substrate having a lattice constant of 12.490 Å-12.510 Å by the liquid phase epitaxial method, and represented...
5513032 Actively pumped faraday optical filter  
An actively pumped optical filter includes a vapor cell having a population of electrons with the plurality of energy levels which receives light and transmits light according to a pumping...
5493222 Reflection type magnetooptic sensor head with faraday rotator  
A reflection type magnetooptic sensor head. The respective structural elements are aligned in the order of a light source, light inputting/outputting path, polarizer, Faraday rotator, and...
5483161 Faraday effect continuous circuit flux concentrating magnetic field sensor  
A general-purpose magnetic field sensor capable of sensitively measuring uniform magnetic fields includes a magneto-optic (Faraday-effect) sensor and a flux concentrator. Both the magneto-optic...
5479290 Faraday's rotator and optical isolator  
A Faraday's rotator comprises a magnetic crystal which has a composition represented by the following compositional formula: (Tb1-(a+b+c+d) Ln1a Ln2b Bic M1d)3 (Fe1-e M2e)5 O12, has a lattice...
5463316 Magnetooptic sensor head  
A reflection type magnetooptic sensor head is disclosed. The respective structural elements are aligned following a light source in the order of a light inputting/outputting path, polarizer,...
5402509 Optical fiber coupling device including lenses and magnetooptics  
An optical device which optically connects a first and a second optical fiber with an optical path provided therebetween and has two or more functions including the function of an optical...
5386313 Reflective magneto-optic spatial light modulator assembly  
A reflective magneto-optic spatial light modulator (MOSLM™) assembly has a nonmagnetic protective housing that receives, positions, and protects a spatial light modulator (SLM) chip that is formed...
5355084 Optical magnetic-field sensor having spherical lenses for light collimation  
An optical magnetic-field sensor includes a base fixed relative to distal ends of optical fibers inserted in the sensor, optical parts and an optical element for transmitting optical signals...
5281912 Magneto-optic magnetic-field measuring apparatus for measuring a magnetic field intensity by measuring an angle of diffraction  
A magnetic-field measuring apparatus comprising a polarizing element for generating polarized light that transmits parallel to the lines of magnetic force of a first magnetic field, a Faraday...
5277845 Oxide garnet single crystal  
A novel oxide garnet single crystal, which can be epitaxially grown on a rare earth-gallium garnet wafer and exhibiting excellent performance as a material of magneto-optical devices, is...
5267077 Spherical multicomponent optical isolator  
A spherical multicomponent optical isolator having a first spherical segment lensing region, including a base, a second spherical segment lensing region, including a base, a first polarizer...
5255119 Reflective magneto-optic device with an embedded conductor channel  
A reflective mode, magneto-optic spatial light modulator (MOSLM) device has planar electrical conductors which function both as optical mirror surfaces and as the address conductors for random...
5241412 Magneto-optic device with reflective conductor  
A reflective mode, magneto-optic spatial light modulator (MOSLM) device has one or more pixel elements formed from a selected magneto-optic material with a respective pair of coincident current...
5216562 Multi-beam optical recording system and method  
A laser array provides multiple closely spaced light beams. These light beams are reflected off of an optical recording medium. A faceted prism is used to separate the closely spaced beams sets...
5212446 Magneto-optical element and magnetic field measurement apparatus  
The present invention relates to a magneto-optical element which is made of a bismuth-substituted rare earth iron garnet crystal of a formula (BiX GdY RZ Y3-X-Y-Z) (Fe5-W GaW)O12,wherein R...
5194548 Organic nonlinear optical material  
Disclosed is an organic nonlinear optical material comprising a compound having a conjugate main chain in the molecule and having donor groups D and acceptor groups A added onto the conjugate main...
5192862 Polarizerless magneto-optic speed and torque sensor  
A polarizerless optic sensor is provided that uses a random domain magneto-optic film and a modulated normal magnetic field to vary or modulate the energy distribution in a diffraction pattern....
5146361 Apparatus comprising a magneto-optic isolator utilizing a garnet layer  
Apparatus according to the invention comprises a magneto-optic isolator. The isolator comprises a magneto-optic member that comprises a single crystal substrate and a single crystal garnet layer...
5078512 Unidirectional mode converter and optical isolator using same  
An optical isolator in which a mirror is arranged in the waveguide path to provide Fresnel reflection of the propagating light and change the light path direction by 90 degrees, the light path...
5008611 Method of eliminating the effects of birefringence from the detection of electric current using Faraday rotation  
An improved method and apparatus for measuring a target electric current utilizing a Faraday effect in which an optical medium is magnetically coupled with the target electric current and light is...
4978950 Grey-scale representation using binary spatial light modulators in coherent optical processor  
A spatial light modulation technique for a coherent optical processor, permitting binary spatial light modulators to represent a range of grey levels. The technique modulates a coherent input beam...
4953124 Opto-magnetic signal reproducing apparatus for reading, by differential detection using a magneto-optical effect, information magnetically recorded on a record medium  
An opto-magnetic signal reproducing apparatus includes a light source unit for applying a linearly polarized light beam to a recording medium having magnetically recorded information, a splitter...
4937833 Analog frequency modulated laser using magnetostriction  
The present invention relates to an analog frequency modulatable laser. The radiation of the lasing medium is analog frequency modulated by change of the optical path length by movement of...
4933629 Method and apparatus for optically measuring electric and magnetic quantities having an optical sensing head exhibiting the Pockel's and Faraday effects  
A method and an apparatus for measuring the strength of an AC electric field or an equivalent voltage, or the strength of an AC magnetic field or an equivalent current, based on a light beam which...
4932760 Magneto-optic garnet  
This invention provides a magneto-optic garnet grown by liquid phase epitaxy on a nonmagnetic garnet substrate and having a composition of the following formula (1) Hox Tby Bi3-x-y Fe5 O12...
4898440 Optical waveguide device  
An optical waveguide device is disclosed which utilizes an interaction between a guided optical wave and a magnetostatic wave. The optical waveguide device comprises a layer of bismuth substituted...
4868495 Fiber optic  
A single mode optical fiber is used to detect electrical currents or magnetic fields from a source to a high degree of accuracy. Phase modulation of an optical beam is used to determine the...
4850098 Method and apparatus to enhance the sensitivity of cylindrical magnetostrictive transducer to magnetic fields  
A fiber optic sensor using the treated coil of optical fiber as a structural support system for the sensor, and a method for making such a sensor.
4806885 Magnet-electro-optic effect light modulator  
A magneto-electro-optic effect light modulator has a rectangular solid-like semiconductor element made of one member selected from the group of an n-type semiconductor, a p-type semiconductpr and...
4789500 Optical control element  
An optical control element is disclosed which is capable of accomplishing the simplifying, small-sizing and lightening of the structure. The optical control element comprises a substrate...
4739287 Apparatus for external modulation of high efficiency CO2 laser beams  
The invention relates to an apparatus for external modulation of high-efficiency CO2 laser beams of defined wavelength, particularly for use in CO2 laser material working apparatuses. According to...
4687993 Fiber optic magnetic field sensing transducer having a resonant structure  
A magnetic field sensing transducer which converts magnetic field intensity into a magnetostrictive strain and transfers that strain to an optical fiber employs a thin wall, hollow, cylindrical...
4686678 Semiconductor laser apparatus with isolator  
The apparatus includes a semiconductor laser diode, a mounting for the laser diode and a casing with a window through which light from the diode passes. The casing hermetically seals the diode. A...
4668085 Photo-elastic sensor  
Certain materials (e.g. polymers, glasses) exhibit the photo-elastic effect, whereby when they are subject to stress become birefringent, which influences a light beam passing through the glass....
4656421 Magnetic field sensors  
A magnetic field sensor in the form of an arcuate element comprising two superimposed strips of material is described. The magnetostrictive constant along the longitudinal axis of one of the...

Matches 151 - 200 out of 245 < 1 2 3 4 5 >