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7541569 |
Position sensor utilizing light emissions from a lateral surface of an optical fiber
A position sensor includes a light source, and a light-emitting optical fiber having an insertion end that receives a light input from the light source, and a plurality of light emitters disposed...
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7257473 |
Steering column switch system comprising an emergency operation function
A steering column switch system includes a device for recording the position of the steering column switch. The device converts the switching position that has been adopted by the steering column...
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7078677 |
Optical encoder disk having a region that continuously increases in size
A code disk, an optical encoder using such a disk and a method thereof are described. The code disk includes a first region on the disk and a second region that is adjacent to the first region. The...
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6985239 |
Position-sensing device for 3-D profilometers
An apparatus for sensing position data of a light pattern created by a known light source on an object, comprising an optical system for collecting an incident light beam of the light pattern and...
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6974949 |
Position sensor with an optical member of varying thickness
A position sensor device that produces a variable output voltage when using a light emitting diode, such as an infrared light emitting diode (IR-LED), and a phototransistor further includes the use...
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6800839 |
Device for the optoelectronic detection of switching positions of a switching element
An optoelectronic switch position detection apparatus for detecting the switch positions of a switch element movable in switch position steps in a switch direction with each switch position step...
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6710322 |
Device for detecting the position of a selector lever
A invention relates to a device for detecting the position of a selector lever, in which the selector lever is connected to a switching device that transmits a signal to an evaluation device for a...
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6617958 |
Optical potentiometer
An optical potentiometer comprised of a specialized circuit board and a movable reflector device capable of traveling left and right stably on the specialized circuit board. The movable reflector...
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6614016 |
Method for optically determining the position of a movement element and sensor for implementing the method
A method for optically determining the position of a movement element optically includes introducing the light emitted by a light source into an optical conductor which causes attenuation of the...
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6586719 |
Device for detecting the positional change between two bodies moving in relation to one another
In an arrangement for detecting the position of two bodies moving relative to one another by a light barrier system, a device is arranged on at least one of the moving bodies such that when the...
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6573488 |
Semiconductor position sensitive detector
A plurality of resistive regions constituting a resistive region gradually increase in width from one end to the other end and have substantially the same resistivity. If, therefore, this...
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6188380 |
Photodetector of liquid crystal display and luminance control device using the same
A combination includes a liquid crystal module having a liquid crystal panel forming a front surface, an opposing back surface, and a backlight structured and arranged to transmit light between the...
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6152443 |
Optical device for detecting the printing media in printers
An optical device for detecting the printing media in printers includes an element pivoting on two rotation pivots which are incorporated therein a certain distance apart and which are guided in...
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6051842 |
Illumination optical apparatus with optical integrator
An illumination optical apparatus includes a light source emitting an illumination light beam, the illumination light beam being directed along a predetermined optical path, a variable optical...
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6025588 |
Optical analog potentiometer
A potentiometer includes a shaft, a base including a printed circuit board on which are fixedly mounted a light emitter and a light receiver arranged opposite to and spaced from the light emitter,...
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6015970 |
Switch assembly incorporating optical control function
An optical switch assembly for a two-way radio has electrical and mechanical subassemblies. The electrical portion consists an IR emitter (12) and a pair of IR receivers (14,16) strategically...
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5973320 |
Optical position sensor
An optical position sensor comprises a linearity correction circuit 20 having ROM 22 in which a corresponding table between compensation values and respective rotational angular position of a...
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5965878 |
Performing quadrature and push button function utilizing two IR emitter/detector pairs
A selector assembly for use in avionic multifunctional displays to perform quadrature and push button functions is described herein. The selector assembly utilizes two sensors and a cylindrical...
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5716030 |
Aperture door and calibration source for spacecraft remote sensing devices
A spacecraft telescope door (10) adapted for use with remote sensing devices requiring optical and infrared calibration. The door (10) includes a first calibration surface (24) disposed on a first...
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5670780 |
Device providing real-time orientation and direction of an object
Disclosed is a method and apparatus for providing instantaneous real-time information concerning the attitude of an object. When the speed of the object to which the apparatus is attached is known,...
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5665965 |
Encoder apparatus and methods employing optical and graphical programming
Optical encoder apparatus and methods are provided for converting the cyclic motion of an electro-mechanical machine, such as an electric motor, into at least one electrical signal having a...
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5650613 |
Encoder for measuring, position, velocity and acceleration of a shaft
An apparatus is disclosed for measuring rotation of a shaft with extreme precision. The apparatus includes a housing enclosing a slotted disk wherein the slot is continuously varying about the...
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5573236 |
Variable sheet guide position sensor
An apparatus for determining the dimensions of a stack of sheets in the tray. An optical sensor is arranged so that movement of the sheet guides in a paper tray causes a variably graduated scale to...
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5572039 |
Method and apparatus for observing a gap
The assessment of clearance conditions in an operating turbine structure has provide difficult to achieve. The invention provides apparatus which enables the clearance between seal fins on rotating...
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5532473 |
Reflection shadow sensor with light directing diffusive surface
A reflective shadow sensor is disclosed for use in detecting the position of a moving object by directing a flow of light towards that object and detecting the amount of light reflected by a...
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5466923 |
Method and circuit for compensating the drift of the output signal of a photoelectric sensor in an electrical remote control apparatus, and remote control apparatus realizing this method and this arrangement
Method for compensating an output signal of a photoelectric sensor having a drift due to aging a drift in temperature and a signal in absence of optical excitation (dark signal), in an electrical...
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5428217 |
Annular photodiode for use in an optical rotary encoder
The present invention relates to an optical rotary encoder for detecting a position optically. In the optical rotary encoder of the invention, a light beam reflected by a half mirror enters a...
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5420413 |
Actuator with an optical position sensor using a variable magnetic field
An actuator having an optical position sensor is disclosed. The sensor remotely provides via a single optic fiber light having two spectral frequencies of about equal intensities to two inversely...
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5389777 |
Optical displacement sensor utilizing optical diffusion and reflection
The invention relates to optical devices, particularly to an optical displacement transducer for detecting a light flow received by a light sensor and subsequent determination of the amount of...
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5359186 |
Particle detector for detecting ionizing particles having a potential barrier formed in a region of defects
A particle detector for detecting ionizing particles incident on the detector which form electron-hole pairs upon penetrating the detector, the detector comprising a substrate, a first electrode...
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5343186 |
Variable resistor having the capacity to produce a fader start signal output
A variable control fader with provisions for outputting a fader start signal upon movement of the fader from a position corresponding to the faders maximum attainable resistance value. This fader...
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5329114 |
Actuator with an optical position sensor using linear attenuators
An actuator having an optical position sensor is disclosed. The sensor remotely provides via a single optic fiber light having two spectral frequencies of about equal intensities to two inversely...
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5283432 |
Optical control knob assembly incorporated on a flat panel display apparatus
A control knob assembly primarily for use with devices utilizing flat panel display technology, each assembly having means for manipulating the electronic apparatus by using remote sensing...
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5272335 |
Eccentricity-compensated position detecting apparatus having an identifying transparent slit
An object of this invention is to provide a position detecting apparatus which can accurately detect an angle of rotation of a rotary board mounted on a rotary shaft even if the former is not...
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5218199 |
Optical position sensor having rigidly fixed read head
An optical position sensor comprising an encoder plate (52) that includes a variable density code pattern (54) is disclosed. Disposed in contact with the encoder plate is a bearing plate (58)...
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5155355 |
Photoelectric encoder having a grating substrate with integral light emitting elements
A photoelectric encoder characterized in that the grating substrate on the light emission side is composed of a plate-like light emitting element and in that light shielding members in the form of...
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4977316 |
Encoder disc having a track formed by two regions of different radii
An encoder disc for a photoelectric shaft angle encoder includes a disc body which defines first and second regions. The first region is defined between two circles of differing radii and offset...
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4950899 |
Position detecting circuit with CCD and relatively moving source
A position detecting circuit for use in an apparatus for performing position control such as an original reading apparatus is disclosed. In the position detecting circuit according to the present...
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4947665 |
Apparatus for the electrical control of an in-line drawing machine
An apparatus is disclosed for drawing a length of wire through a die and for supplying the wire to a using station wherein the apparatus utilizes a mechanical variable-speed drive mechanism and a...
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4928008 |
Variable light transmission filter and optical analog position sensor
A light transmission filter for transmitting a beam of light of any wave length. The filter is made up of a pattern of opaque figures positioned along a transparent substrate. The spacing between...
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4917360 |
Operating device for electric chain block
An operating device for an electric chain block having an electric motor for a raising and lowering operation comprises a cylinder body interposed between one end of a chain for raising and...
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4905291 |
Cyberoptic audio level control system
The specification discloses an audio signal level control system including a center-tapped photocell incorporated into an attenuator bridge. The cell elements are monitored while processing the...
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4902885 |
Photoelectric conversion type rotational position detector
A photoelectric conversion-type rotational position indicator for indicating the rotational position of a rotating body, including a light receiving member having one or more identically shaped...
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4874939 |
Method and apparatus for detecting position/variance of input light using linear and quadratic outputs
An apparatus for detecting position/variance of input light is disclosed which includes a photoelectric conversion device receiving input light constituted of a first resistive layer formed of a...
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4859845 |
Optical rotary encoder with sub-code patterns
An optical rotary encoder is provided, which has a code disk formed with an analog code pattern (CP) so as to improve its detection resolution.The analog code pattern (CP) is continuously formed in...
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4849621 |
Rotational-position detecting apparatus with two shaped photovoltaic surfaces
A non-contact, non-electromagnetic, compact, lightweight rotating body rotational-position detecting apparatus in which a disk or ring-shaped light source is spaced from a light receiving plate...
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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...
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4731530 |
Joystick control having optical sensors
An electromechanical control for use with a joystick lever which swivels along x and y axes simultaneously. The control has a light source and two light sensitive phototransistors. The light source...
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4692613 |
Angle sensor
A light shielding plate rotated by the shaft of an object to be measured is provided with a slit. The distance between the slit and the axis of the shaft varies continuously. A light source and a...
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4593187 |
Non-imaging illumination incidence angle detection system
A non-imaging detector for directly measuring the angle of incidence of irradiation in one plane from an illuminating source. The detector includes a slit mask that transmits narrow lines of...
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