2273 results about "Flash-lamp" patented technology

A digital camera has an integral flash and stores and displays a digital image. Under certain conditions, a flash photograph taken with the camera may result in a red-eye phenomenon due to a reflection within an eye of a subject of the photograph. A digital apparatus has a red-eye filter which analyzes the stored image for the red-eye phenomenon and modifies the stored image to eliminate the red-eye phenomenon by changing the red area to black. The modification of the image is enabled when a photograph is taken under conditions indicative of the red-eye phenomenon. The modification is subject to anti-falsing analysis which further examines the area around the red-eye area for indicia of the eye of the subject. The detection and correction can be optimized for performance and quality by operating on subsample versions of the image when appropriate.

A light-emitting diode (“LED”) based strobe may be used in automated system to provide a visual alert to occupants and/or building personnel if an emergency condition exists. A LED based strobe provides an even distribution of light having a sharp, bright pulse of light desired for emergency evacuation using lower power consumption.

Disclosed is a wireless communication system using visible light and, more particularly, a short-range wireless communication system using a camera sensor module and a flash module mounted on a wireless terminal. The wireless terminal utilizes an LED and a camera sensor selectively for performing camera functions in a wireless terminal and as interface modules for visible light short-range communication.

A refractive laser surgery process is disclosed for using compact, low-cost ophthalmic laser systems which have computer-controlled scanning with a non-contact delivery device for both photo-ablation and photo-coagulation in corneal reshaping. The basic laser systems may include flash-lamp and diode pumped UV solid state lasers (193-215 nm), compact excimer laser (193 nm), free-running Er:glass (1.54 microns), Ho:YAG (2.1 microns), Q-switched Er:YAG (2.94 microns), and tunable IR lasers, (750-1100) nm and (2.5-3.2) microns. The advantages of the non-contact, scanning device used in the process over other prior art lasers include being safer, reduced cost, more compact and more precise and with greater flexibility. The theory of beam overlap and of ablation rate and coagulation patterns is also disclosed for system parameters. Lasers are selected with energy of (0.01-10) mJ, repetition rate of (1-10,000), pulse duration of 0.01 nanoseconds to a few hundreds of microseconds, and with spot size of (0.05-2) mm for use with refractive laser surgery.

A power supply (1) for powering a load, the load being in the form of a flash driver circuit (4) for a digital camera (not shown). The power supply includes a supercapacitive device, in the form of a supercapacitor (8), for powering circuit (4). A regulator unit, in the form of an inductive regulator (10), charges supercapacitor (8).

System and Method pertaining to the modification and integration of an existing consumer digital camera, for example, with an optical imaging module to enable point and shoot fundus photography of the eye. The auto-focus macro capability of existing consumer cameras is adapted to photograph the retina over an extended diopter range, eliminating the need for manual diopter focus adjustment. The thru-the-lens (TTL) auto-exposure flash capability of existing consumer cameras is adapted to photograph the retina with automatic flash exposure eliminating the need for manual flash adjustment. The consumer camera imaging sensor and flash are modified to allow the camera sensor to perform both non-mydriatic focusing of the retina using infrared illumination and standard color flash photography of the retina without the need for additional imaging sensors or mechanical filters. These modifications and integration of existing consumer cameras for fundus photography of the eye significantly improve ease of manufacture and usability over existing fundus cameras.

A printer-built-in image-sensing apparatus including a camera which performs image sensing with film exposure, and a printer which prints an image sensed by the camera. After a shutter button has been pressed and image sensing with strobe light emission has been performed, if printing is instructed by pressing of a print button, then electric charging a capacitor of a strobe circuit is made after the completion of the print operation. Otherwise, the charging of the capacitor is started immediately after the image sensing. In this case, even if printing is instructed during the electric charge, printing is started after completion of the electric charge. Thus, electric consumption upon print operation can be reduced and fluctuation of voltage can be suppressed.

An adjusting method of flash intensity is applied in an image capture apparatus with a flash lamp, where two pre-flash images corresponding the object are retrieved under two different pre-flash lights, respectively, and then a flash intensity of main-flash light is calculated according to one of the retrieved pre-flash images, so as to retrieve a main-flash image corresponding the object under the main-flash light with the calculated main-flash light.

The invention is based on a method for controlling a flashlight in connection with a digital image sensor without a mechanical shutter, wherein the exposure of the image sensor is performed in sub-areas, such as pixel rows or columns, or in another order, by using a rolling electronic shutter or the like. Thus, the exposure of said sub-areas of the image sensor takes place at least partly at different times. According to the invention, during the time of exposure of one image, i.e. substantially all the sub-areas of the image sensor, several discrete, successive flashes of the flashlight are used to achieve even exposure of the image area, which the flashes are timed in such a way that each single flash is triggered at a point of time which is common to the integration or exposure time of as many successive sub-areas of the image sensor as possible. According to the invention, the successive light flashes are also timed in such a way that one and only one flash of the flashlight occurs during the integration or exposure time of each single sub-area. By the present invention, the significant advantage is attained that the invention minimizes the number of light flashes required for one image while it also secures that each sub-area of the sensor to be exposed at a different time is illuminated as evenly as possible.

A first flash heating is performed in which a lower flash lamp irradiates a back surface of a semiconductor wafer with flashes of light, so that heat conduction from the back surface to a surface of the semiconductor wafer raises the temperature of the surface from the room temperature to an intermediate temperature. Then, a second flash heating is performed in which an upper flash lamp irradiates the surface of the semiconductor wafer with flashes of light, to raise the temperature of the surface of the semiconductor wafer from the intermediate temperature to a target temperature. Since only the irradiation with flashes of light emitted from the lower flash lamp and the upper flash lamp is used to cause the semiconductor wafer having the room temperature to reach the target temperature, all heat treatments can be completed in an extremely short time of one second or less.

The invention discloses a power-saving method of an image capture device, which is applied to an image capture device with a flash lamp, and comprises the following steps: storing a first exposure travel table and a second exposure travel table in the image capture device; under a normal mode, shooting according to the first exposure travel table by the image capture device; and under a power-saving mode, shooting according to the second exposure travel table by the image capture device, wherein the first exposure travel table has a first shutter speed for correspondingly opening the flash lamp, the second exposure travel table has a second shutter speed for correspondingly opening the flash lamp, and the first shutter speed is faster than the second shutter speed. According to the operation mode of the image capture device, the exposure travel table of the image capture device can be adjusted by the method correspondingly, thus prolonging the service time of the image capture device.

Retasking of one or more photographic exposure controls of a camera to give direct manual control of a power output level of a lighting device by mapping a dynamic range of a photographic exposure compensation control of the camera to a dynamic range of a power output level of the lighting device. In another example, mapping is used in automatic tracking of changes in ISO and/or aperture of a camera to a power output level of a lighting device. In one example, automatic tracking of power control can be provided to lighting devices (such as studio strobes) that do not usually have access to automated power control from a camera.

The invention discloses a method and a device for regulating a mode, which belong to the field of intelligent devices. The method comprises steps: current ambient light intensity is acquired through a built-in light sensor; whether the current ambient light intensity is matched with the current working mode of a flash lamp is detected; when the current ambient light intensity is not matched with the current working mode of the flash lamp, a mode regulation control corresponding to the flash lamp is automatically displayed in a shooting interface; a selection signal acting on the mode regulation control is received; and according to the selection signal, the working mode of the flash lamp is regulated. Automatic pop-up of the mode regulation control corresponding to the flash lamp is realized through a terminal, the user can directly select a flash lamp working mode, and the control efficiency is improved.

Disclosed is an electronic device/apparatus capable of displaying an animation that varies with internal settings and minimizing the amount of memory use for handling information for animation generation. When a shutter button (12) is pressed in a help display mode, flash ON/OFF setup information (52) stored in an EEPROM (25) is referenced. If the value of the flash ON/OFF setup information is ON, a three-dimensional animation in which a flash (104) on a three-dimensional model (71) emits light is created and displayed in accordance with three-dimensional model data. If, on the other hand, the value is OFF, a three-dimensional animation in which the flash (104) on the three-dimensional (71) model does not emit light is displayed. Consequently, the user can recognize visually and intuitively the difference among various digital camera (100) motions that vary with system settings.

A capacitor, a coil, a flash lamp, and a switching element such as an IGBT are connected in series. A controller outputs a pulse signal to the gate of the switching element. A waveform setter sets the waveform of the pulse signal, based on the contents of input from an input unit. With electrical charge accumulated in the capacitor, a pulse signal is output to the gate of the switching element so that the flash lamp emits light intermittently. A change in the waveform of the pulse signal applied to the switching element will change the waveform of current flowing through the flash lamp and, accordingly, the form of light emission, thereby resulting in a change in the temperature profile for a semiconductor wafer.