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US20120219029 Pulsed-Multiline Excitation for Color-Blind Fluorescence Detection  
The present invention provides a technology called Pulse-Multiline Excitation or PME. This technology provides a novel approach to fluorescence detection with application for high-throughput...
US20060046863 Laser collimator for calibrating collimation of laser beams of a golf bar  
A laser collimator for calibrating collimation of laser beams of a golf bar comprises a discharge circuit including a capacitor and a resistor for controlling the discharging time; a switch; a...
US20090290608 Photochemistry Laser Diode Assembly And Photochemistry Sheet Having The Same  
A laser diode (LD) assembly for medical therapy and a medical therapy sheet having the same, which are capable of facilitating the assembly and maintenance of a laser diode (LD) which can emit...
US20080107143 PUMP LIGHT CONTROL OF A LAMP-PUMPED LASER  
A lamp-pumped laser includes a pump light source for optically pumping a laser medium, such as a laser rod, a pump light sensor that detects the optical pumping power of the pump light source, and...
US20090116235 SEMICONDUCTOR SOLID-STATE LIGHT-SOURCE MODULE AND ASSEMBLY HAVING THE SAME  
An exemplary semiconductor solid-state light-source module includes a printed circuit board, at least one semiconductor solid state light source mounted on the printed circuit board and a light...
US20070297471 Laser scanning device and image forming device including the laser scanning device  
A laser scanning device and an image forming device including the laser scanning device are provided. The laser scanning device includes: a laser diode (LD) driver arranged to control a driving...
US20090016394 LASER DIODE DRIVING DEVICE AND OPTICAL SCANNING DEVICE  
A laser diode driving device capable of obtaining a stable pulse emission state even when variation in the current-light amount characteristic of a laser diode thereof is caused by environmental...
US20050271099 BURST MODE TRANSMITTER SYSTEM  
An electrical circuit for a transmitter driver system that operates in burst or continuous mode includes a transmitter that generates an output signal in accordance with an input current....
US20090135868 Optical transmitter able to resume APC operation automatically  
An optical transmitter is disclosed that provides a function to resume the APC operation automatically when the failure of the APC operation is due to the thermal runaway of the device in the APC...
US20100033508 LASER EMISSION DEVICE AND IMAGE DISPLAY DEVICE USING THE SAME  
A laser emission device which can emit a high-luminance and high-monochromaticity light with a high efficiency, a low power consumption, and a long lifetime, and a image display device using the...
US20060198408 Method of restoring setting values by managing pon network topology table in device accommodating plurality of EPON ports  
A method of restoring setting values by managing a passive optical network (PON) network topology table in a device accommodating a plurality of Ethernet passive optical network (EPON) ports...
US20100322274 LIGHT TRANSMITTER AND AUTOMATIC POWER CONTROL CIRCUIT THEREOF  
A light transmitter and an auto-control circuit thereof are provided. The circuit includes a driving module and a feedback module. The driving module is coupled to the feedback module and a load....
US20080075134 Inexpensive terahertz pulse wave generator  
Pulses of signals in the terahertz region are generated using an apparatus made up of a mode-locked semiconductor laser diode with a short duty cycle that is optically coupled to a biased Auston...
US20130044777 OPTICAL TRANSMITTER WITH STABLE OUTPUT WAVELENGTH  
An optical transmitter is disclosed, where the optical transmitter shows an emission wavelength kept stable in one of grid wavelengths of the WDM system during the boot of the transmitter. The...
US20060092999 Semiconductor-laser-pumped solid-state laser apparatus  
A semiconductor-laser-pumped solid-state laser apparatus (11) which operates laser oscillation by exciting a solid-state laser medium (1) using a semiconductor laser (2) is described. The...
US20090251524 PULSED LASER MODE FOR WRITING LABELS  
An apparatus and a method for writing a label on a surface of an object, such as on the top surface of an optical disk (CD, DVD, Blu Ray etc.) are disclosed. The label is written by using the...
US20100018487 Method for Operating an Ignition Device for an Internal Combustion Engine  
A method for operating an ignition device for an internal combustion engine, particularly of a motor vehicle, having a laser device which has a laser-active solid that has a passive Q-switch. The...
US20080056086 LASER DRIVER CIRCUIT AND OPTICAL DISC DEVICE INCLUDING THE LASER DRIVER CIRCUIT  
In order to compute a set value for a laser driver circuit for obtaining laser light having a predetermined irradiation power by using a calibration coefficient indicating manufacturing errors. In...
US20090274182 LIGHT SOURCE, LIGHT SOURCE DEVICE, LASER IMAGE FORMING DEVICE AND INTEGRATED CIRCUIT  
The light sources (10) according to the present invention includes a laser oscillator including a semiconductor laser (11), a drive circuit (18) for the semiconductor laser (11), an ACC circuit...
US20050089069 Image forming apparatus and semiconductor laser modulation driving apparatus  
A color image forming apparatus produces a latent image on a photosensitive body based on a signal output from a scanning light detecting part in response to detection of scanning light; a...
US20070206649 HIGH REPETITION RATE LASER MODULE  
A laser module includes an electrical connector; a laser diode coupled to the electrical connector through a transmission line; and an optical coupler in optical communication with an optical...
US20060176919 Method for driving laser element, driving circuit for laser element, optical communications apparatus, electronic device  
A driving method for making a laser element to emit light by supplying a predetermined drive current to the laser element includes supplying a preliminary current smaller than the drive current...
US20080290065 Laser Ice Etching System and Method  
A laser ice etching system (7) includes a laser (11) for producing a laser beam, a laser aiming system (13) adapted to aim and direct a laser beam produced by the laser (11) onto forming ice cubes...
US20070291806 VARIABLE RESISTANCE CIRCUIT AND LIGHT SOURCE CONTROL DEVICE USING THE SAME  
A variable resistance circuit comprises an input terminal, an output terminal, and a variable resistance module. The variable resistance is connected between the input terminal and the output...
US20140063593 Capacitor discharge pulse drive circuit with fast recovery  
A circuit apparatus for driving short current pulses through a laser diode is disclosed. The circuit allow fast recovery time, comparable to the pulse duration. This enables high duty cycle pulse...
US20090028200 LASER DIODE DRIVE CIRCUIT, ELECTRONIC CIRCUIT, METHOD FOR CONTROLLING LASER DIODE DRIVE CIRCUIT, AND METHOD FOR CONTROLLING DUTY  
A laser diode drive circuit includes: a duty control amplifier (23) that controls the duty ratio of a main signal for laser control in accordance with a duty control signal; and an AND gate (22)...
US20100329293 Methods and Apparatus for Efficient, Low-noise, Precision Current Control  
Improved current controllers of the present invention provide efficient, low noise, precision current control for devices having such operational requirements. The current controllers are...
US20090310636 LIGHT INTENSITY BOOST FOR SUBPIXEL ENHANCEMENT  
Techniques are disclosed that enable fine features such as serifs and narrow strokes of texts to be produced by xerographic devices, for example. The fine features may be generated by subpixels...
US20140105610 Power-Saving Driver Circuit for Providing a Bias Current or Driving a Current-Driven Load  
Methods and circuits for providing a minimum driving voltage to a current-driven load (such as a laser diode) are disclosed. The circuit and methods may be useful for efficiently providing a bias...
US20090034565 CURRENT DRIVE CIRCUIT  
A current drive circuit according to the present invention includes: a first current source and a second current source (I101, I102); a first current mirror (CM103) for generating a first mirror...
US20050135444 Laser driver circuit and system  
Described is a laser driver circuit comprising a bipolar transistor for transmitting a modulated power signal to a laser device. The bipolar transistor may generate the modulated power signal in...
US20080019407 DRIVING DEVICE AND METHOD  
A driving device including a light emitter, a biasing circuit, a light receiver, an automatic control system, and an alternating current (AC) path is disclosed. The light emitter generates an...
US20090122820 Method Of Driving A Laser Diode  
A method of driving a block of diodes having low impedance by high power pulses. A high power signal is fed through an impedance-transforming device to a block of diodes. The block of diodes...
US20080212628 Auto-power control circuit to maintain extinction ratio of optical output from laser diode  
The present invention provides an auto-power control (APC) circuit and a method to stabilize the extinction ratio of an optical output from a laser diode (LD) in an optical transmitter. The APC...
US20090268767 DC COUPLED DRIVER WITH ACTIVE TERMINATION  
A DC coupled driver is described for modulating a vertical cavity surface emitting laser at high speeds with active termination. High speed and low total power dissipation is achieved by improving...
US20090245301 LASER MICROMACHINING USING PROGRAMMABLE PULSE SHAPES  
Laser pulse shaping techniques produce tailored laser pulse spectral output. The laser pulses can be programmed to have desired pulse widths and pulse shapes (such as sub-nanosecond to 10 ns-20 ns...
US20090135476 LIGHT SOURCE APPARATUS AND LASER SCANNING MICROSCOPE  
Beth of highly stable light having the same optical performance and fast-modulated light are emitted simply and inexpensively. A light source apparatus is provided, which includes semiconductor...
US20100034226 LASER DRIVER CIRCUIT, METHOD FOR CONTROLLING A LASER DRIVER CIRCUIT, AND USE  
A laser driver circuit comprising an amplifier device with a plurality of switchable subamplifiers, which can be or are connected to an output for connection of a laser, ith an analog switching...
US20060088071 Laser driver controller for safe operation of laser diode-based optical transmitters  
A method, apparatus and system for controlling operation of a laser driver to limit emission levels of laser diodes each producing different monitor photocurrents are disclosed. In one embodiment,...
US20070230525 Eye-safe laser navigation sensor  
One embodiment relates to an optical navigation apparatus which provides fault-tolerant limitation of laser output power. The apparatus includes a diode laser and a current source interconnected...
US20090141759 METHOD FOR DERIVING PRECISE CONTROL OVER LASER POWER OF AN OPTICAL PICKUP UNIT, AND ASSOCIATED AUTOMATIC POWER CALIBRATION CIRCUIT  
A method for deriving precise control over laser power of an optical pickup unit (OPU) includes: providing an analog-to-digital converter (ADC) within an automatic power calibration (APC) circuit...
US20060056471 Laser drive circuit  
When a switch SW1 is turned on by an HSYNC signal, a comparison circuit compares an output of a photodiode LD with a reference signal. The comparison result is stored in a capacitor C1. A main...
US20090268766 OPTICAL TRANSMITTER APPLICABLE TO BURST SIGNAL AND METHOD FOR CONTROLLING THE SAME  
An optical transmitter and a method to control the transmitter are disclosed, in which the optical output may be substantially maintained even in the inactive state of the input burst signal. The...
US20090161710 Laser array circuit  
A laser array circuit decreases the size of a circuit pattern. A laser-diode (LD) driving switching element with a low on resistance is used in common with and switches conduction and...
US20090262769 LASER DRIVE CIRCUIT AND USE  
A laser drive circuit and use of digital-to-analog converters is provided, each with a current input and a current output to set current values of partial currents switchable by means of digital...
US20050105574 Laser driver for optical communication network  
A transistor, such as a FET or bipolar transistor, may be gate or base coupled to a laser driver output stage to receive a varying voltage from a driver output stage. The transistor converts the...
US20090296764 FREQUENCY-AGILE RF-POWER EXCITATION FOR DRIVING DIFFUSION-COOLED SEALED-OFF, RF-EXCITED GAS LASERS  
A gas discharge laser includes a laser housing including a laser gas and an electrode-assembly for lighting a discharge in the laser gas. The electrode assembly has a first resonant frequency when...
US20090041071 CONTROL CIRCUIT FOR A LASER DIODE AND A METHOD TO CONTROL A LASER DIODE  
A control circuit for a laser diode is disclosed, in which the driving current may be suppressed even when the monitor PD breaks down to make the APC feedback control inoperable. The control...
US20090238226 DRIVER CIRCUIT FOR SEMICONDUCTOR LASER DIODE DRIVEN IN DIFFERENTIAL MODE  
A driver circuit for a semiconductor laser diode (LD) is disclosed, in which the driver circuit drives the LD in the differential mode and lowers the power consumption thereof. The driver circuit...
US20070280315 LASER DRIVING CIRCUIT, OPTICAL PICKUP AND RECORDING/READING EQUIPMENT  
Disclosed is a laser driving technique capable of reducing power consumption in a laser driving circuit to achieve reduced heat generation in an optical pickup of a recording/reading equipment for...

Matches 1 - 50 out of 324 1 2 3 4 5 6 7 >