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3580684 |
OPTICAL DENSITY-CALIBRATED PHOTOMETER
A system in which changes in the optical density of a sample are measured by passing a light beam through the sample including a photomultiplier for intercepting the exit beam and providing an...
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3579017 |
HARP ELECTRON MULTIPLIER
An electron multiplier having a plurality of dynodes wherein each dynode includes two wire layers located in staggered relationship with one another and wherein each of the dynodes is located with...
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3573464 |
PHOTOELECTRON MULTIPLIER
The invention provides a photodetector responsive to modulated laser light. A multiplier phototube is used having a photocathode and a dynode arranged on the same plane. An electric field is used...
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3571599 |
PHOTOMULTIPLIER TUBE CIRCUIT EMPLOYING VARISTOR
The output of a photomultiplier tube circuit is disclosed as being developed across a varistor, thereby to linearize such output as a function of a logarithmically variable input to the...
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3569701 |
PREREGULATION OF HIGH VOLTAGE SUPPLY CIRCUIT FOR A MEDICAL NUCLEAR SPECTROMETER
A modular, all transistorized, direct-coupled, pulse-height spectrometer for use in nuclear medical measurements is provided with means for the specific control of noise level, overloads, linearity...
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3567948 |
METHOD AND APPARATUS FOR IMPROVING THE QUANTUM EFFICIENCY OF PHOTOTUBES
An end-on photomultiplier tube has a fused quartz dome covering its lightceiving face plate or window and further has its photocathode interfaced with the window and with the tube vacuum. The dome...
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3564323 |
SECONDARY-ELECTRON MULTIPLIER HAVING TILTED ELLIPTICAL PIPES THE ENDS OF WHICH ARE OBLIQUELY CUT
A secondary-electron multiplier of the channel type having a plurality of channel pipes combined in the form of a bundle. In the multiplier, the channel pipes are arranged to make an angle with...
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3557373 |
METHOD AND CIRCUITS FOR REGULATING THE GAIN OF A PHOTOMULTIPLIER FOR LASER-TELEMETRY APPARATUS
Apparatus is provided for use in laser-telemetry equipment by means of which a photomultiplier has its gain controlled according to the intensity of the prevailing background radiation. The...
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3555281 |
PHOTOTUBE WITH ELECTRODE DISPOSED ON OUTSIDE OF TUBE ENVELOPE FOR MODULATION PURPOSES
A photocell receiver is provided on the outer surface thereof in front of its light-sensitive surface with at least one electrode capable of transmitting luminous radiation, the electrode being...
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3551841 |
THIN FILM LASER DEVICE EMPLOYING AN OPTICAL CAVITY
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3549891 |
CYCLOTRON RESONANCE PHOTOTUBE HAVING AXIAL MAGNETIC FIELD AND TRANSVERSE ELECTRIC FIELD
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3546526 |
ELECTRON DISCHARGE DEVICE HAVING COAXIAL MOUNTING STRUCTURE
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3543095 |
PHOTOCATHODE PROTECTION CIRCUIT
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3541331 |
NEUTRAL AND CHARGED PARTICLE DETECTOR
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3526769 |
VIDEO AMPLIFIER WITH COMPENSATION FOR UNWANTED VARIATIONS IN CARRIER MODULATION
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3515878 |
GAIN CONTROL SYSTEM FOR PHOTOMULTIPLIER USING STANDARDIZATION PULSES
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3515482 |
AEROSOL PHOTOMETER WITH IMPROVED ELECTRONIC CIRCUITRY
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3514209 |
DEVICE FOR MEASURING THE MAXIMUM INTENSITY OF A PULSE OF ENERGY
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3510661 |
PHOTOELECTRIC TIMING CONTROL APPARATUS
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3510662 |
OPTICAL RADAR SYSTEM WITH PHOTOMULTIPLIER AND ASSOCIATED CIRCUITRY HAVING TIME CONSTANT LONG ENOUGH TO PERMIT "PILE-UP" OF SIGNAL PULSE BUT SHORT ENOUGH TO KEEP NOISE PULSES SEPARATED
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3510647 |
AUTOMATIC SENSITIVITY CONTROL FOR A MASS SPECTROMETER
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3508050 |
PROCESS FOR MEASURING AND EQUALIZING THE GAIN CHARACTERISTICS OF CHANNEL IMAGE INTENSIFIER ARRAYS
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3506358 |
RAPID SCANNING SPECTROPHOTOMETER OF DOUBLE BEAM MODE
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3502979 |
QUIET INTERVAL PULSE SAMPLING
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3496365 |
MATERIAL INSPECTION SYSTEMS
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3495087 |
TARGET DISPLACEMENT DETECTOR UTILIZING AN IMAGE DISSECTOR TUBE HAVING AN APERTURE THROUGH WHICH PASS THE ELECTRONS OF THE FOCUSED ELECTRON IMAGE
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3495080 |
HIGH SPEED ANALOG MULTIPLIER USING PHOTOCELLS IN CONJUNCTION WITH NEON AND ARGON TUBES
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3493766 |
OPTICAL TRACKER WITH AN L-SHAPED APERTURE FOR THE PHOTOMULTIPLIER TUBE
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3490849 |
REGISTERING AND INTEGRATING SPHERE COLORIMETER
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3488434 |
CONTROL SYSTEM FOR PHOTOSENSITIVE VIDEO RECORDER
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3487222 |
AUTOMATIC GAIN CONTROL FOR SELF-CALIBRATING A DETECTION SYSTEM
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3479516 |
ELECTRON STREAM TRANSMISSION DEVICE
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3478213 |
PHOTOMULTIPLIER OR IMAGE AMPLIFIER WITH SECONDARY EMISSION TRANSMISSION TYPE DYNODES MADE OF SEMICONDUCTIVE MATERIAL WITH LOW WORK FUNCTION MATERIAL DISPOSED THEREON
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3476940 |
PHOTOMULTIPLIER SYSTEM WHEREBY DYNODE VOLTAGE SUPPLY IS VARIED IN ACCORDANCE WITH MODULATION OF INCIDENT LIGHT,HOLDING OUTPUT CURRENT CONSTANT AND USING MEASURE OF DYNODE VOLTAGE AS MEASURE OF MODULATION OF LIGHT
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3465157 |
TEMPERATURE COMPENSATING CIRCUITS FOR PHOTOELECTRIC DEVICES
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3463926 |
DIFFERENTIAL LIGHT SENSING MEANS WITH ONE PHOTOMULTIPLIER CONNECTED TO ONE OF THE DYNODES OF THE OTHER PHOTOMULTIPLIER
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3461297 |
OPTO-ELECTRONIC LOGIC ELEMENT
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3457419 |
FLUID FLOW METER IN WHICH LASER LIGHT SCATTERED BY THE FLUID AND BY A STATIONARY SCATTERING CENTER IS HETERODYNED
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3454809 |
CIRCULAR ELECTRON MULTIPLIER AND PERMEABLE ANODE
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3450921 |
FAST,HIGH CURRENT ELECTRON MULTIPLIER HAVING A COLLECTOR DECOUPLED FROM GROUND
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3446971 |
OPTICAL RANGING SYSTEM USING A BEAT FREQUENCY RESPONSIVE PHOTOMULTIPLIER
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3446972 |
AUTOMATIC GAIN CONTROL FOR PHOTOMULTIPLIER TUBES EMPLOYING A MONITORING PHOTOCELL
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3445664 |
TEMPERATURE COMPENSATING CIRCUIT FOR PHOTOMULTIPLIER TUBES
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3444414 |
PHOTOMULTIPLIER
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3444379 |
ELIMINATION OF DARK CURRENT EFFECTS IN PHOTOMULTIPLIER TUBES
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3441733 |
SCINTILLATION COUNTER FOR IMPROVING MEASUREMENT OF RADIATION DOSE
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3439172 |
AUTOMATIC GAIN SYSTEM FOR A PHOTOMULTIPLIER TUBE
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3437817 |
GAIN CONTROL CIRCUIT FOR PHOTOMULTIPLIER TUBES WITH A SEMI-CONDUCTOR DEVICE CONNECTED ACROSS THE LAST RESISTOR OF THE DIVIDER
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3437780 |
DEVICE FOR MEASURING AND EQUALIZING THE GAIN CHARACTERISTICS OF CHANNEL IMAGE INTENSIFIER ARRAYS
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3437820 |
OPTICAL DISTANCE MEASURING EQUIPMENT UTILIZING TWO WAVELENGTHS OF LIGHT IN ORDER TO DETERMINE AND COMPENSATE FOR THE DENSITY OF THE AIR
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