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Document Title |
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7592752 |
Lighting control circuit for flash discharge tube and method of use
A lighting control circuit for a flash discharge tube can include an IGBT drive circuit and a timer circuit provided in parallel to each other to output a drive voltage to an IGBT device. An OR...
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7579783 |
Microprocessor-controlled insertable flashlight adapter device
An insertable flashlight adapter device for use in an ordinary flashlight having a lamp includes a disc-like shaped housing unit. Electronic circuitry is disposed within the housing unit for...
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7545104 |
Power supply circuit for flash discharge tube
A voltage is applied across the positive electrode and negative electrode of a flash discharge tube (xenon flash lamp) to emit light by a charge and discharge capacitor. This voltage application...
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7522832 |
Apparatus and method for strobe charging
An apparatus and method for strobe charging is disclosed. The apparatus and method can dynamically adjust a charging current according to current power level of a battery, thereby stabilizing the...
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7522831 |
Charging device for camera flash
A charging device ( 1 ) for a camera flash includes a digital signal processor ( 10 ) providing a pulse width modulation signal and receiving a feedback signal, a voltage boosting circuit ( 20 )...
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7471049 |
Optical element driving circuit
Optical element driving circuits flexibly configure energy sources to cause a flash tube to produce illumination at one of multiple output intensities. The driving circuits allow a single strobe...
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7423385 |
System and method for controlling voltage on discharge capacitors which control light energy from flash lamps
A system and method are described for controlling voltage on discharge capacitors which control light energy from flash lamps, wherein the method includes measuring over time an operational...
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7414370 |
Increasing reliability of operation of light emitting diode arrays at higher operating temperatures and its use in the lamps of automobiles
A lamp in which a LED array is coupled to a transistor such that the same amount of current flows through both. The voltage level at the control (e.g., base) terminal of the transistor is...
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7375471 |
Charging circuit
A charging circuit has a battery 12 , switching element 14 , and resistor 16 for current detection arranged on the primary side of transformer 10 . Diode 18 and capacitor 20 for storing...
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7359632 |
Flash apparatus, image capture apparatus having a flash apparatus, and method of controlling a flash apparatus
A flash apparatus or an image capture apparatus includes a charging unit, configured to boost a voltage of an electric source and a control unit, configured to calculate the sum of the light...
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7333004 |
Self-adjusting strobe
A strobe unit responds to a selected candela output by selecting an optimal capacitor charging frequency to minimize current requirements at the selected candela output. A plurality of charging...
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7221100 |
Gas discharge lamp power supply
An apparatus for providing power to a gas discharge lamp comprises a storage capacitor and an ignition switch coupled through a primarily parasitic first inductor to a parallel combination of a...
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7106008 |
Flashlight control circuit
A flashlight control circuit is provided to control the flash according to an exposure voltage and a predetermined voltage. Either a first comparator, second comparator and logic gate or a...
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7106007 |
Flashlight lamp circuit with automatic light adjustment
A flashlight lamp circuit with automatic light adjustment includes a flashlight charging unit for controlling charging of a main capacitor, a flashlight activation unit activating the flashlight...
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7081718 |
Power supply circuit for flash discharge tube
A voltage is applied across the positive electrode and negative electrode of a flash discharge tube (xenon flash lamp) to emit light by a charge and discharge capacitor. This voltage application...
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7049760 |
Camera flash circuit using a piezoelectric transformer to trigger firing of the camera flash tube
A camera flash circuit employing a piezoelectric transformer in the flash trigger circuit, the piezoelectric transformer having input terminals coupled to the main flash voltage storage capacitor...
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7030571 |
Stroboscopic illuminator
A photographic illumination system, comprising a first stroboscopic flash tube, for emitting an intense broadband illumination pulse comprising ultraviolet rays; a second stroboscopic flash tube,...
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6924605 |
Combination voltage detector and LED flashlight
A combination electric field sensor and a flashlight with at least one main LED disclosed that uses a voltage multiple circuit that enables the use of a single AA or AAA battery. The voltage...
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6894439 |
Portable power converter pack
A portable power converter comprising input means to receive low voltage DC input, voltage converter means for converting the low voltage DC input into high DC voltage output, the voltage converter...
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6785470 |
Capacitor charging device utilizing current detection to determine malfunction, and strobe and camera using same
A strobe charging device includes a light-emitting tube; a main capacitor for accumulating energy and for supplying the energy to the light-emitting tube; a transformer circuit which includes...
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6741044 |
Lamp lighting controlling apparatus and light emitting apparatus
When a lamp is turned on and a wafer is placed on a light exposure surface, a controlling unit opens a shutter plate so that light is emitted on the light exposure surface and an illuminometer...
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6724989 |
Camera strobe recharging integrated circuit
A camera strobe recharging IC includes a one-shot unit, an R-S latch block unit, a PWM control unit, and a ready control unit. The one-shot unit provides square wave signals. The R-S latch block...
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6714735 |
Capacitor charging device for a flash
A capacitor charging device for a flash, finishes charging the flash capacitor in a gradual manner. It has a flash capacitor, a voltage transforming circuit, a voltage mode pulse width modulation...
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6693392 |
Method and apparatus for generating a flash or a series of flashes from a multiparameter light
A multiparameter light is a type of theater light that includes an arc lamp and a shutter in combination with one or more optical components for creating various lighting effects, suitable...
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6674247 |
Efficient photographic flash
Photographic flashes use the major portion of available energy in modern cameras. A series of innovations within a photographic flash system improves the energy efficiency by a factor of 3, and...
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6630798 |
Electronic flash device of automatic light adjusting type
An electronic flash device of an automatic light adjusting type includes a main capacitor for storing charge at a high voltage. A flash discharge tube generates flash light upon discharging the...
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6603445 |
Method and apparatus for factoring large numbers with optoelectronic devices
A method and apparatus for factoring large numbers which utilizes an optoelectronic device that has a wafer at one end that contains a plurality of LEDs. Each LED is associated with at least one...
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6593705 |
Rapid-firing flashlamp discharge circuit
A flashlamp circuit includes a charge reservoir that receives a first voltage from an external source. The charge reservoir is coupled to a resonator and a plurality of discharge capacitors to...
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6564015 |
Electronic flash device
In an electronic flash device, a driving circuit ( 12 ) drives a piezoelectric transformer ( 13 ) in response to an oscillation signal of a predetermined frequency, which is output from an...
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6563849 |
Drive circuit for light emitting device
A drive circuit is provided with a source follower circuit 2 consisting of an NMOS-FET connected to the anode side of light emitting device 1 and adapted to directly drive the light emitting...
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6531832 |
Discharge lamp and electronic flash device using the same
In a discharge lamp, at least one of two main electrodes disposed at both ends of the discharge lamp includes one main electrode that comprises a sintered metal member having a slope with respect...
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6518714 |
Flash lamps for underwater photography
A flash lamp for underwater photography has at least two straight discharge tubes mounted to a panel perpendicularly to each other in a T-form or an L-form such that a circular target area can be...
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6516153 |
Capacitor charging apparatus and electronic flash and apparatus containing same
A capacitor charging apparatus includes a DC/DC converter for stepping up the voltage of a battery and charging the capacitor; a detection circuit that determines whether a primary current of the...
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6509695 |
Flash apparatus and camera having the flash apparatus
In a flash apparatus, when it is determined that the oscillation of a voltage boosting circuit is stopped before it is controlled so as to stop, it is possible to continuously charge a voltage to a...
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6476564 |
Flash light emitting device
The flash light emitting device includes a charging circuit for charging the light emitting energy into a capacitor by boosting a power supply voltage, and a light emitting circuit for making a...
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6456797 |
Electronic flash unit with alternative capacitor switching
An electronic flash unit has alternative (dual) capacitor switching to reduce flash ready time for flash firing.
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6407512 |
Flashing device of an automatic light-regulation type
Flash light is repeatedly emitted in a pulse state by intermittently turning on and off an IGBT. The flash light reflected by a subject is received by a phototransistor to integrate a received...
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6393220 |
Camera with electronic flash
A power source part supplies power to an electronic flash charging circuit and camera circuits such as an LCD backlight circuit. When the charge begins, the electricity stops being supplied to the...
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6373197 |
Controller for flash lamps sharing a common power source and controlling method thereof
A controller is provided for several sets of flash lamps that shares a common power source. The controller comprises a high-voltage charging/discharging circuit and several sets of flashing...
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6366028 |
Battery powered light
A light, such as a miniature flashlight, includes a housing adapted to hold a battery, a voltage step-up circuit disposed so as to come into electrical contact with the battery when the battery is...
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6345155 |
Light-emission control apparatus camera apparatus and light-emission control method
A light-emission control apparatus comprising a light-receiving element 2, an A/D converting section 6, an integrating section 7, a comparing section 8, and a control section 9. The...
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6335596 |
Control device of a flash type movable decorating lamp
A control device of a flash type movable decorating lamp comprises a high voltage converting circuit, an actuating circuit, a high voltage storage capacitor, a flash displaying circuit and other...
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6167199 |
Information transmitting apparatus using flash light emission
In an information transmitting apparatus capable of transmitting information by using flash light emission of a flash light emission tube, communication data is detected at timing synchronized with...
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6157140 |
Sequentially pulsed energy flow loop
A plurality of energy emitters, such as flash tubes for visibile light or speakers for audio emissions, are placed in communication with an appropriate trigger circuit, one circuit for each of the...
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6150770 |
Flash apparatus
In a flash apparatus capable of making high-speed repeating light emission, a self-maintaining switch element provided for various purposes is prevented from erroneously operating due to the...
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6147460 |
Flash apparatus
In a power supply device for a flash apparatus having the primary winding side of a transformer and an oscillation-controlling switching element connected in parallel to a power supply and the...
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6111364 |
Method and device to inhibit the flash photography of a vehicle
A device and method that inhibits the ability of photographic equipment from obtaining a recognizable picture upon its recording media, of areas of a vehicle equipped with this invention. The...
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6104144 |
Charging circuit for stroboscope
A conventional stroboscope circuit in use for a film camera has encountered with problems that charging of a main capacitor is incapable when other functions of the camera are operated and that a...
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6081076 |
Fill-in light emitting apparatus and still video camera
A fill-in light emitting apparatus having an illuminating mechanism for emitting illumination light whose color temperature can be varied; a color temperature metering mechanism for measuring the...
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6066926 |
Electronic flash device and power supply circuit
An electronic flash device in which a voltage of a power supply battery is boosted to be supplied to a load, includes a first oscillation portion of self-excited type, a second oscillation portion...
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