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8198576 Three-dimensional LADAR module with alignment reference insert circuitry comprising high density interconnect structure  
A 3-D LADAR imaging system incorporating stacked microelectronic layers is provided. A reference insert circuit inserts data into the FIFO registers at a preselected location to provide a...
7800075 Multi-function module for an electron beam column  
A multifunction module for an electron beam column comprises upper and lower electrodes, and a central ring electrode. The upper and lower electrodes have multipoles and are capable of deflecting,...
7399964 Electron microscope, measuring method using the same, electron microscope system, and method for controlling the system  
The present invention relates to an electron microscope which reduces a difference in measured values that occur due to a difference in resolution that cannot be fully adjusted which exists among...
7005638 Apparatus and method for reducing the electron-beam-induced deposition of contamination products  
In a device for examining a specimen with an electron beam, in particular an SEM, TEM, or CSEM, contamination products are often result from the irradiation. To reduce these contamination...
5973313 Method and apparatus for generating ratiometric control signals  
A ratiometric sensor is formed of a first photodiode connected in series with an electronic component, such as a second photodiode or a resistor, between a source of first voltage and a source of...
5064274 Automatic automobile rear view mirror assembly  
A variable reflectivity automobile mirror assembly is operable by automatic electrical circuitry responsive to variations of incident light upon the mirror and ambient light level about the...
4950076 Alternate approach for obtaining dynamic range in monopulse guidance systems  
A system for improving the dynamic range of guidance systems for missiles d bombs by replacing pseudo-logarithmic amplifiers in the processing circuits with transimpedance amplifiers having feed...
4940967 Balanced digital infrared detector circuit  
A digital control circuit uses a single infrared detector to control the clock pulse on a digital counter so that the sensitivity control is based on the length of time a change in infrared...
4902884 Circuit arrangement for carrying out light intensity measurements  
In a circuit arrangement for carrying out light intensity measurements, comprising an input terminal (5), an output terminal (6), a first and a second photodiodes (D1, D2) for receiving light...
4812635 Optoelectronic displacement sensor with correction filter  
An optoelectronic displacement sensor for the absolute measurement of displacement in the sub-micrometer range is described, which is constructed, according to an exemplary embodiment, with a...
4769533 Circuit arrangement for a position-sensitive radiation detector  
The invention relates to a circuit arrangement for a position sensitive radiation detector which produces a current or voltage signal (UY) that depends exclusively on the coordinates x and y of...
4717820 Device for detecting movable objects  
A device for detecting movable objects within a limited detection area comprises a number of juxtaposed photosemiconductors (A, B) on which an image of the detection area is adapted to impinge and...
4651023 Electronic switch  
An electronic switch has a pair of light dependent resistors forming part of a potential divider with the hysteresis of the circuit being high enough to prevent equally applied changes in light...
4624572 Non-invasive reflectance spectrophotometric apparatus  
Spectrophotometric apparatus is incorporated in a portable housing with a light source for emitting a wide band of radiation from which monochromatic light is produced and projected onto a...
4559643 Opto-electronic image processor  
The invention relates to a device for processing optical information of light intensity and/or light polarization and/or phase position and/or spectral composition varying in one, two or three...
4348686 Microwave-infrared detector with semiconductor superlattice region  
A detector and/or mixer of electromagnetic energy in the microwave-infrared region of the electromagnetic spectrum comprised of a body of semiconductor material having a superlattice region...
4302668 Variably biased photoelectric circuit  
A photoelectric circuit is provided with a differential amplifier having two inputs. First and second photosensitive elements and resistors are connected in parallel to each of the two inputs of...
4216378 Optical scanner  
An optical scanner for scanning an image on a document to produce an electrical signal representing the image density of the image at successively scanned points positioned along a scan line on...
4143264 Highway line detector  
A highway line detection system for an automobile which provides an output signal when a traffic line on a pavement under an automobile is about to be crossed. It includes a photoelectric sensor...
4078151 Electronic graphics pad  
A graphics panel is disclosed which translates any random trace of a point light source across the panel into voltage indicative of orthogonal components of the displacement of the light source....
4054834 Device for measuring AC in a high tension line  
Shunt means supply a diode bridge with an alternating current proportional to the AC to be measured. The bridge has at least two electroluminescent diodes which emit two alternating streams of...
4048596 Light-activated remote control unit  
A remote control unit for an electrical appliance includes a pair of photocells and one or more threshold devices connected to sense differential illumination of the photocells. The threshold...
4045804 Focus detecting device  
A focusing device for providing an indication of the in-focus condition of a lens relative to a scene and a focal plane, F0. An a.c. bridge circuit includes photoelectric elements in two legs...
4030840 Waveform sampler  
A waveform sampler, for cooperation with a conventional sampling oscilloscope, has, as part of a bridge circuit, two Gallium Arsenide photoconductors mounted on a 50 ohm stripline. One GaAs...
4016423 Infrared analyzer of constant radiant energy  
This invention relates to an improved infrared analyzer, wherein the total radiant energy reaching the detector is maintained at a constant value independently from the aging of the source of...
4012663 Lighting control system  
Spectral output of lamp is controlled by a combination of color filters and dual photocell which monitors the spectral composition of the radiant energy from the lamp and compensates for change...
3984676 Light-measuring apparatus with lamp indicator for determining balance of a measuring bridge  
This invention relates to a light-measuring apparatus wherein a photoelectric element is arranged in a leg of a measuring bridge, the output voltage of said element controlling the brightness of...
3955081 Exposure control circuit  
An exposure control circuit connected with an electrically operated exposure control element such as an electric shutter or an electrically controlled diaphragm includes a bridge circuit. The...
3943360 Radiant energy pulse detector  
Pulse detection apparatus for optical signal pulses including ultra-violet and infra-red frequencies. A photoconductive detector cell has four ohmic output electrode terminals disposed in a...
3938890 Torque transducer utilizing differential optical sensing  
Torque stress on a stationary or rotating shaft is measured in a contactless fashion utilizing differential optical sensing means. A pair of light-controlling discs are attached to opposite ends...
3881112 Smoke and heat detector unit  
A unit for detecting the presence of smoke in the air and for detecting a high heat condition. The unit comprises a casing containing a light source, a light detecting photocell which receives...
3859520 OPTICAL DETECTION SYSTEM  
A method and a system for detecting the spectral radiant energy which is characteristic of an explosion or fire. The disclosed example uses methane-air ignitions which are analyzed by first...
3836248 OPTICAL DOCUMENT SENSOR FOR READING MACHINES  
An optical sensor head has a plurality of photocell sensors connected in a bridge circuit. The sensor in one arm of the bridge reads light transmitted directly from a source. At least one sensor...
3831402 KNITTING MACHINE ENCODER  
An improved knitting machine includes an encoder which provides signals which vary with variations in the relative position of a needle cylinder and associated feeders. The encoder includes code...
3825352 AUTOMATICALLY ACTUATED LIGHT MEASURING SYSTEM  
An automatically energized light measuring system comprises a null type electrical measuring network such as a differential meter including a light measuring first photoconductor connected in...
3825748 CAMERA AIMING STRUCTURE  
The camera aiming structure in which a camera has associated therewith a lens and photo detecting apparatus together with a motor control circuitry and drive motor or motors adapted to orient the...
3818230 BRIDGE DEVICE FOR MEASURING THE INFRARED RADIATION  
A bridge device for measuring infrared radiation comprises a pair of branches, one of which serially includes a thermistor bolometer and a D.C. voltage source, and the other of which serially...
3811047 BALANCE CONTROL  
A balance control comprising an elongated control stick adapted to be angularly manipulated relative to a longitudinal neutral axis about a pivot point thereon, a plurality of light sensitive,...
3809910 MICROFILM FRAME SELECTION CIRCUITRY  
First and second photodetectors positioned within a bridge configuration are optically coupled to a control track of a roll of microfilm having optically readable control indicia positioned...
3807878 OPTICAL DENSITOMETER FOR INDICATING THE OPTICAL DENSITY AND RATE OF CHANGE OF THE OPTICAL DENSITY OF A SPECIMEN  
This invention relates to a system for measuring and recording the optical density of a specimen. In particular, the invention relates to a measuring system including means for providing an...
3799681 VARIABLE COMPUTING RESISTOR  
A variable computing resistor is disclosed for representing non-linear curves in null or bridge circuits. A flexible resistive rod is used or resistor components are placed in end-to-end...
3783275 APPARATUS FOR THE OPTICAL-ELECTRICAL SCANNING OF A DRAWING HAVING A LARGE NUMBER OF POINTS OF DIFFERENT COLORS  
Apparatus for scanning a drawing consisting of a large number of points each of which is of a colour selected from a number of colours, and for converting the information obtained by scanning the...
3775617 SERVO APPARATUS WITH PHOTOSENSITIVE DEVICE AND COMPENSATING CIRCUIT  
A servo-control apparatus for use with equipment having a servo feedback loop, comprising an electrically energized light-emitting means or lamp, a control photosensitive device having an...
3770965 PHOTOSENSITIVE CONTROL APPARATUS WITH MOVABLE LIGHT CONTROL MEMBER  
A novel control device for use in a servo apparatus of the type employing a galvanometer movement connected in a servo feedback loop arrangement. The device comprises a photosensitive transducer...
3751154 AUTOMATIC RANGEFINDER ELECTRONIC CIRCUITRY  
This invention relates to automatic range finder circuitry for cooperative utilization with apparatus, such as a photographic camera or the like, using triangulation for range distance...
3729263 METHOD AND APPARATUS FOR DETECTING THE HARDNESS LEVEL OF WATER  
A control including a sampling means for periodically extracting a sample of water from a water system and a detection means for determining the hardness level of the sample. The sample is mixed...
3728549 IN SITU DEVICE FOR MEASURING LIGHT SCATTERING  
A self-contained, telemetering, fixed small angle forward scatterance meter or furnishing real-time data on light scattering intensity is provided. Collimated light from a laser is directed...
3719149 TWO CHANNEL OPTICAL FUZE WITH INFRARED SENSING BRIDGE  
3718822 RIVET CENTER DETECTING MECHANISM  
To determine whether or not a rivet has been delivered to, and is properly centered between, the rivet holding fingers of an automatic riveting machine, a light beam is directed from a light...
3711716 PHOTOELECTRIC SENSOR FOR LINE TRACING AND EDGE TRACING COMPRISING MEANS FOR SWITCHING PHOTOCELL BETWEEN DIFFERENT BRANCHES OF A BRIDGE CIRCUIT  
This invention relates to a photoelectric tracing system in which the sensing device can be easily changed from a line tracing type to an edge tracing type and vice versa.

Matches 1 - 50 out of 277 1 2 3 4 5 6 >