| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Voltage multiplier device | US936372 | 1978-08-24 | US4245176A | 1981-01-13 | Russell E. Anglin |
| A voltage multiplier device is disclosed which includes a circuit and a means for coupling the circuit between a television filament transformer and the heater filament leads of a C.R.T. picture tube of a television set. The device is operative to develop a voltage across the two leads of the C.R.T. heater filament that is greater than the voltage developed across the two secondary leads of the transformer. | ||||||
| 122 | Video signal reproducing device with electron beam scanning velocity modulation | US515665 | 1974-10-17 | US3936872A | 1976-02-03 | Senri Miyaoka |
| In a video signal reproducing device having a cathode ray tube in which at least one electron beam is focused at a phosphor screen and is made to scan the screen in line-scanning and vertical directions, and in which the beam focusing is effected by an electron lens constituted by at least two tubular electrodes arranged coaxially in succession along the axis of the tube with a relatively low potential being applied to one of the electrodes and a relatively high potential being applied to the other electrode or electrodes; electron beam scanning velocity modulation is effected by forming the tubular electrode to which the low potential is applied in two parts which are axially separated along a vertical plane inclined relative to the tube axis, and by applying across the two parts of such tubular electrode a control signal which is produced in response to transient changes in the luminance or brightness of the video signal being reproduced. Such control signal is preferably provided by a circuit which employs only a single delay line to provide the velocity modulating control signal as the difference between a luminance or brightness component of the video signal and such component delayed twice by the delay line, and a further control signal constituted by the luminance or brightness component delayed once by the delay line and which is employed for modulating the intensity of the electron beam or beams. | ||||||
| 123 | Automatic brightness control for image intensifier tube | US41892073 | 1973-11-26 | US3848123A | 1974-11-12 | PARKER W; KRYDER R |
| The brightness of an output display screen of an image intensifier tube is automatically controlled by a currentlimiting means connected between a direct current source and an oscillator. The oscillator supplies an alternating voltage to a voltage multiplier. The voltage multiplier provides accelerating voltages to the individual stages of the image intensifier assembly. The current-limiting means responds to a nonlinear, current sensing element to provide a substantially constant current source at input light intensity levels below a predetermined level, and to provide a substantially unlimited current source when the input light intensity exceeds the predetermined level.
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| 124 | Touch-wire overlay masks for cathode ray tubes | US3773989D | 1971-01-22 | US3773989A | 1973-11-20 | HACON W |
| A ''''touch-wire'''' mask for use in conjuncion with a cathode ray tube which comprises at least one thin flexible transparent plastic sheet carrying metallic touch elements and related conductors formed by printed circuit techniques.
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| 125 | Reduction of arcing between the parts of a cathode ray tube | US3434770D | 1967-05-19 | US3434770A | 1969-03-25 | ANGELUCCI GEORGE V; KURTZ RICHARD J; O'FALLON RICHARD G |
| 126 | Apparatus for cleaning the elements of a cathode ray tube | US44896865 | 1965-04-19 | US3323854A | 1967-06-06 | KAZIMIR PALAC |
| 127 | Adaptor device for image tubes | US40793654 | 1954-02-03 | US2857589A | 1958-10-21 | FONG SAMUEL G |
| 128 | Protective device | US71328034 | 1934-02-28 | US2092373A | 1937-09-07 | HOLMES RALPH S |
| 129 | Fast power supply for image intensifying tube | US147764 | 1999-03-03 | US6140628A | 2000-10-31 | Yves Sontag; Eric Fauvel |
| A fast power supply for an image intensifier tube used in night vision devices. The tube includes a microchannel amplification wafer placed between a photocathode and an output screen. The supply of the tube delivers a reference voltage to a first terminal of the wafer, a variable voltage to the second terminal of the wafer, a variable photocathode voltage and an output screen voltage. The illumination of the output screen is measured by its screen current. Beyond one screen value, and in order to maintain constant output illumination while avoiding dazzle, the voltage at the second terminal of the wafer is slaved to the changes in the screen current and is different from the photocathode voltages fixed. The circuit for controlling the circuit at the second terminal of the wafer includes a high voltage amplifier with transistors having small quiescent consumption and high control speed for decreasing or increasing the voltage as a function of the variations in the screen current. | ||||||
| 130 | Deflection yoke | US009885 | 1998-01-21 | US6124773A | 2000-09-26 | Yusuke Okawa; Hiroshi Kimura; Takasuke Koga; Naoki Hatakeyama |
| A deflection yoke includes a coil, a base board, and a terminal. The terminal is mounted on the base board. The terminal extends from the base board. The terminal has a first portion and a second portion. The first portion of the terminal extends from the base board and has a substantially circular cross-section. The second portion of the terminal extends from the first portion thereof and has a cross-section with a corner. A lead extending from the coil is wound on the first and second portions of the terminal as a winding on the terminal. The winding has a first portion and a second portion. The first portion of the winding extends around the first portion of the terminal. The second portion of the winding extends around the second portion of the terminal. At least part of of the second portion of the winding is soldered to the second portion of the terminal while at least part of the first portion of the winding is non-soldered. | ||||||
| 131 | Switch particularly suited for image intensifier tube system | US183967 | 1998-11-02 | US6072170A | 2000-06-06 | Franklin H. Fish |
| A cathode switch particularly suited for an image intensifier tube (IIT) is disclosed. The cathode switch provides cathode pulses to turn "on" and n "off" the IIT tube and does so with reduced power consumption and with reduced noise generated by associated high voltage switching. | ||||||
| 132 | Intensity control system for intensified imaging systems | US149691 | 1998-09-08 | US6069352A | 2000-05-30 | James Castracane; Mikhail A. Gutin; Lawrence P. Clow, Jr. |
| An improved intensity control system for an intensified imaging system allows continuous viewing through an intensified imaging system while protecting saturated areas from the negative effects of overexposure. A micromirror array (MMA) is used in conjunction with associated optics to control the intensity incident on the image intensifier. Control circuitry determines if pixel intensity is above or below the preset threshold level. If above, the corresponding elements of the MMA array will deflect the incident light in that specific area thereby eliminating saturation of the pixels. The rest of the image is maintained for continuous viewing. A continuous feedback loop monitors the intensity levels of pixels and actively controls the incident light using the MMA. | ||||||
| 133 | Night vision device with voltage to photocathode having a rectified half-sine wave component | US901424 | 1997-07-28 | US5942747A | 1999-08-24 | Michael R. Saldana |
| A night vision device which applies a time-varying voltage to the photocathode of the device during periods of high average light intensity from a scene being viewed. The purpose of applying this time-varying voltage during periods of high average light intensity is to reduce the average current through the photocathode, thus increasing reliability for the night vision device while preserving image resolution. | ||||||
| 134 | Night vision device localized irradiance attenuation | US712506 | 1996-09-11 | US5729010A | 1998-03-17 | Alan R. Pinkus; Harry L. Task; Peter L. Marasco |
| A night vision device enhancement wherein occurrence of a bright object in an input scene of the night vision device is precluded from adversely affecting reproduction of adjacent low radiance level portions of the input scene. By optically limiting or excluding bright object input scene portions from the night vision device input field the disclosed system precludes both image intensifier-related effects, effects such as blooming and current saturation, and also precludes automatic gain control-related effects such as full-field sensitivity decrease based on the bright object. Plural embodiments of the system are disclosed, embodiments based on bright object attenuation by both yet to be developed photo active materials such as photochromics and embodiments which use present state of the art liquid crystal materials and accompanying electronics. Military and non-military uses of the improved night vision device are contemplated. | ||||||
| 135 | Method and apparatus for random frequency of tube filament current | US283323 | 1994-08-01 | US5463278A | 1995-10-31 | Craig S. Gray |
| Radiated emission is reduced in a vacuum fluorescent tube having a pulsed filament current in a variable frequency range above audible frequencies. A driver circuit produces a fixed width pulse of filament current when triggered by a random frequency generator. The frequency generator comprises a shift register and XOR gates intercoupled to generate a random series of logic outputs, a filter to produce a randomly varying voltage from the logic outputs, and a voltage-to-frequency converter responsive to the filter voltage to yield a random frequency in the required range. The random frequency triggers the driver and clocks the shift register. | ||||||
| 136 | Method and apparatus for vacuum fluorescent display power supply | US149400 | 1993-11-09 | US5402042A | 1995-03-28 | Wayne A. Madsen |
| A power supply for a VF display generates a DC filament voltage from a battery by either a switched transformer supply or a monolithic regulator circuit. Where a higher-than-battery voltage is needed for anode and grid voltages, another monolithic regulator circuit or the switched transformer is used. An H-switch develops an alternating voltage from the DC voltage and applies it to the display filament. A controller for the H-switch is a logic circuit including flip-flops which toggle in response to a low frequency pulsed dimmer signal to synchronize the filament half cycles with the dimmer phases. Slew rate control ramps the H-switch control signal to produce a trapezoidal waveform in the filament current having reduced radio frequency emissions. | ||||||
| 137 | Display bias arrangement | US657902 | 1991-02-20 | US5216334A | 1993-06-01 | Christopher R. Bach |
| An improved display bias arrangement is provided using a DC filament voltage in conjunction with stepped grid voltages to maintain even illumination. In a VF display there is a directly heated cathode (filament), an anode and a grid. If a DC filament voltage is used, one end of the cathode will be at different potential than the other, thus resulting in a variation in anode-to-cathode potential across the display. This varying potential causes electrons to hit the anode with varying speed, causing a variation in display intensity. In this invention, the cathode (filament) is supplied with a DC voltage and the grid of each segment is supplied with a different voltage, thereby equalizing the anode-to-cathode potential for each display digit. In a first embodiment, resistor networks are used to equalize the anode-to-cathode voltages. In a second embodiment, diode networks are used to equalize the anode-to-cathode voltages. | ||||||
| 138 | Gated voltage apparatus for high light resolution and bright source protection of image intensifier tube | US671344 | 1991-03-19 | US5146077A | 1992-09-08 | Joseph N. Caserta; William D. Mims; David A. Crenshaw |
| A bright source protection circuit for an image intensifier tube modulates the voltage supplied to the tube's photocathode in response to current drawn by the photocathode such that the photocathode is pulsed on and off until the desired photocathode current is achieved. | ||||||
| 139 | EMI proof battery pack for night vision goggles | US609991 | 1990-11-07 | US5121045A | 1992-06-09 | Joseph N. Caserta; David A. Crenshaw |
| An improved battery pack for night vision goggles is employed in the cockpit of an aircraft, where RF fields of several hundred volts/meter are present. The improved battery pack includes a shunt circuit for shunting RF signals picked up by any external leads from the battery pack, and a resistor for dissipating electromagnetic energy from the RF signals shunted by the shunt circuit. | ||||||
| 140 | Circuit for gating an image intensifier | US338805 | 1989-04-14 | US4952793A | 1990-08-28 | Clifford B. Cantrell; Lawrence H. Gilligan |
| The gating circuit includes a low voltage section and a high voltage section with a fast and a slow switch in the high voltage section for providing the gating pulses to the photocathode (PC) of the image intensifier. A high voltage isolated DC/DC power supply referenced to the MCPin terminal of the integral wrap around power supply of the image intensifier provides, to the fast and slow switches, positive and negative potentials referenced to MCPin. The negative potential is sufficient to turn the PC on and the positive potential is sufficient to turn the PC off and to clear burned in PC images. The high voltage isolated power supply provides high voltage isolation between the low voltage section and the reference input and outputs thereof in the high voltage section. A driver included in the high voltage section for driving the fast switch receives operating potentials from a low voltage isolated DC/DC power supply referenced to the high voltage supply. The elements of the driver therefore only experience low voltages thereacross. High speed gating pulses and low speed gating pulses are conveyed between the low voltage section and the high voltage section across respective high and low speed isolation barriers to drive the fast and slow switches, respectively. The high speed barrier comprises a high voltage capacitor and the low speed barrier comprises an opto-isolator. The high speed pulses include narrow, low repetition rate pulses for clearing burned in images from the PC. | ||||||
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