6002results about How to "Convenient lighting" patented technology

A luminous lamp having an ultraviolet filtering and explosion-proof thin film is disclosed. An outside of a lamp is coated by a transparent layer which comprises phosphor powder. Energy generated by the lamp is absorbed by the phosphor powder while the lamp is shining. The phosphor powder would release energy to shot brilliance, so as to provide auxiliary lighting after turning off the lamp. Additionally, the phosphor powder can absorb harmful ultraviolet and other harmful radiations with shorter wavelengths to be one part of the thin film for filtering harmful radiations. The harmful ultraviolet can be transformed by the phosphor powder into visible light to red shift radiations with short wavelengths; hence the harmful radiations with shorter wavelengths can be eliminated. The illumination of visible light can be further increased. The transparent layer can catch broken fragments of the outside of the lamp to decrease accidents when the lamp is broken.

A frontlighting illumination system for selectively illuminating a nonemissive electronic display includes display elements in communication with at least one light source. The electronic display includes a nonemissive electro-optic medium; and a light transmissive element. Light transmitted through the light transmissive element illuminates the display medium. The propagation of light that is directed through the light transmissive element towards the microencapsulated electrophoretic display medium is substantially undeflected at the interface between the surface of the light transmissive element and the microencapsulated electrophoretic display medium. A reflector is included for directing light from the light source through the light transmissive element.

A semiconductor light emitting device with improved luminous efficiency is provided. An underlying n-type GaN layer is grown on a sapphire substrate, and a growth mask made from SiO2 film or the like is formed on the underlying n-type GaN layer. An n-type GaN layer having a hexagonal pyramid shape is selectively grown on a portion, exposed from an opening of the growth mask, of the underlying n-type GaN layer. The growth mask is removed by etching, and then an active layer and a p-type GaN layer are sequentially grown on the entire substrate so as to cover the hexagonal pyramid shaped n-type GaN layer, to form a light emitting device. An n-side electrode and a p-side electrode are then formed.

An apparatus and method for illuminating a vehicle including a light source connected to an illuminatable component such as an interior or exterior vehicle door handle or steering wheel, and a control system including a plurality of sensors that monitor the vehicle and surroundings for predetermined conditions and selectively illuminate the component as a means of conveying information or warnings about the vehicle or its surroundings. Illumination may be enhanced by other auditory signals such as audio alarms or vibration. Predetermined conditions may include the proximity of a vehicle user, key fob activation or proximity, input from an entertainment system, activation of a pressure sensor, the presence of a person or object in proximity to the vehicle, or the vehicle's ignition or gear state.

A semiconductor sensor, solar cell or emitter, or a precursor therefor, has a substrate and one or more textured semiconductor layers deposited onto the substrate. The textured layers enhance light extraction or absorption. Texturing in the region of multiple quantum wells greatly enhances internal quantum efficiency if the semiconductor is polar and the quantum wells are grown along the polar direction. Electroluminescence of LEDs of the invention is dichromatic, and results in variable color LEDs, including white LEDs, without the use of phosphor.

Method of deflecting light includes the steps of providing a substrate and forming a supporting member on the substrate. Next forming step forms electrodes at predetermined positions on the substrate. Next forming step forms a plate-like-shaped thin film member including light reflecting means. Placing step places the plate-like-shaped thin film member on the supporting member so that an opposite surface thereof faces the electrodes. Forming step forms space regulating members on edges of the substrate for regulating a space formed above the substrate in which the plate-like-shaped thin film member is freely movable. Applying step applies predetermined voltages to the electrodes to change a tilt direction of the plate-like-shaped thin film member in accordance with the voltages applied to deflect the input light in an arbitrary direction. Disclosure also describes light deflecting apparatuses, light deflecting array apparatuses, image forming apparatuses, image projection display apparatuses, and optical data transmission apparatuses.

A single-chip integrated LED particularly adapted for direct use with a high voltage DC or AC power sources comprises a plurality of electrically isolated LEDs on a generally transparent substrate and bonded to electrically conductive elements on a thermally conductive mount. A reflective coating may be applied to the area between LEDs.

A face imaging system for recordal and / or automated identity confirmation, including a camera unit and a camera unit controller. The camera unit includes a video camera, a rotatable mirror system for directing images of the security area into the video camera, and a ranging unit for detecting the presence of a target and for providing target range data, comprising distance, angle and width information, to the camera unit controller. The camera unit controller includes software for detecting face images of the target, tracking of detected face images, and capture of high quality face images. A communication system is provided for sending the captured face images to an external controller for face verification, face recognition and database searching. Face detection and face tracking is performed using the combination of video images and range data and the captured face images are recorded and / or made available for face recognition and searching.

The present invention relates to regulated power supplies or ballasts integrated with an LED light source. The invention provides a power factor correction scheme producing a greater circuit power factor and improved frequency spectrum characteristics, in which a voltage corresponding to the instantaneous inductor current is sampled and compared to a scaled sample of the rectified input AC line voltage. The line voltage sample modulates the inductor peak charge current in the envelope of the rectified AC voltage waveform. This drives the LED output voltage at a frequency of twice the input line voltage frequency, such that no flicker is perceived in the light output because the persistence in LED phosphor assists in averaging the flux output.

The present invention provides an apparatus and method for determining the magnitude of linear and rotational acceleration of an impact to a body part. The apparatus can be used with protective sports equipment, such as a sports helmet, wherein the apparatus includes a battery, a number of accelerometers positioned proximate to the outer surface of the head, and an electronic device with a processor and a transmitter to transmit data received from the accelerometers. To maximize the battery life and minimize power consumption by the electronic device, the apparatus includes a power management system with a sensor assembly. The sensor assembly sends a first signal to the electronic device to initiate operation when the sensor assembly detects the presence of an object within the helmet, and a second signal to the electronic device to cease operation when the sensor assembly detects the absence of the object. The sensor assembly may be a proximity sensor, more specifically an inductive, capacitive, or ultrasonic sensor.

Improved Wavefront Coding Optics, which apply a phase profile to the wavefront of light from an object to be imaged, retain their insensitivity to focus related aberration, while increasing the heights of the resulting MTFs and reducing the noise in the final images. Such improved Wavefront Coding Optics have the characteristic that the central portion of the applied phase profile is essentially flat (or constant), while a peripheral region of the phase profile around the central region alternately has positive and negative phase regions relative to the central region.

A contrast media injection system includes detects the absolute position of the syringe ram using a non-contact sensor. A series of magnets and Hall-Effect sensors may be used or an opto-reflective system. Illuminated knobs that are connected to the drive mechanism for the syringe ram rotate with the drive and provide visual feedback on operation through the illumination. Analog Hall-Effect sensors are used to determine the presence or absence of magnets that identify the type of faceplate being used. The faceplates include control electronics, connected to the powerhead through connectors, which may be interchangeably used by the two faceplates. The faceplate electronics include detectors for automatically detecting the capacity of pre-filled syringes. Additional features include using historical data to provide optimum pressure limit values during an injection protocol, a removable memory device for storing and transferring information such as injection protocols and injector statistics, and password protection of such protocols.

There is disclosed an automatic electronic window shading (tinting) system for houses and transport vehicles such as automobiles, RV's, trains, boats and the like, to provide shading for people to protect them from exposure to harmful direct sunlight, by providing the windows of said houses and transport vehicles with display elements and light (photocell / photovoltaic) sensors. The system comprises liquid crystal, electrochromic, suspended particle device (SPD), or NanoChromics display (NCD) element attached to a part of a transparent body (such as the windows) and a liquid crystal, electrochromic, suspended particle device (SPD), or NanoChromics display (NCD) controlling semiconductor element controlling the operation of the display element.

A surgical headlight assembly having a headset structure constructed of lightweight components. The headset structure has adjustable head strap members comprising a generally circular lateral band and a top band. A removable liner is attached to the inside surface of the adjustable headset structure. A lighting assembly which is adjustable with respect to the headset and which uses an adjustable LED is also provided connected to the lateral band. A battery pack is utilized to power the LED.

Spatio-temporal light field cameras that can be used to capture the light field within its spatio temporally extended angular extent. Such cameras can be used to record 3D images, 2D images that can be computationally focused, or wide angle panoramic 2D images with relatively high spatial and directional resolutions. The light field cameras can be also be used as 2D / 3D switchable cameras with extended angular extent. The spatio-temporal aspects of the novel light field cameras allow them to capture and digitally record the intensity and color from multiple directional views within a wide angle. The inherent volumetric compactness of the light field cameras make it possible to embed in small mobile devices to capture either 3D images or computationally focusable 2D images. The inherent versatility of these light field cameras makes them suitable for multiple perspective light field capture for 3D movies and video recording applications.

A vehicle system is disclosed that includes a vehicle lamp assembly including a plurality of LEDs that emit white light so as to function as an illuminator light. The lamp assembly also may include a plurality of LEDs that emit colored light to function as a signal light. The lamp assembly may include a camera. The lamp assembly may serve as a CHMSL or as a tail light. The system also includes a controller that rapidly pulses the LEDs at a rate that is imperceivable by the human eye. The pulsing intervals of the LEDs may be related to the readout intervals of the camera sensor array. In this manner, the LEDs may be pulsed on during camera readout to increase the illumination while the camera is capturing an image, or may be pulsed off during camera readout to prevent feedback glare from interfering with image capture by the camera.

Disclosed is an improved light-emitting device for an AC power operation. A conventional light emitting device employs an AC light-emitting diode having arrays of light emitting cells connected in reverse parallel. The arrays in the prior art alternately repeat on / off in response to a phase change of an AC power source, resulting in short light emission time during a ½ cycle and the occurrence of a flicker effect. An AC light-emitting device according to the present invention employs a variety of means by which light emission time is prolonged during a ½ cycle in response to a phase change of an AC power source and a flicker effect can be reduced. For example, the means may be switching blocks respectively connected to nodes between the light emitting cells, switching blocks connected to a plurality of arrays, or a delay phosphor. Further, there is provided an AC light-emitting device, wherein a plurality of arrays having the different numbers of light emitting cells are employed to increase light emission time and to reduce a flicker effect.

The foregoing application describes a system and method of performing a minimally invasive surgical operation. More specifically, the invention involves the use of disposable cannula and slender dilators of variable lengths, which incorporate a source of illumination to carry light to a surgical site and video capabilities for capturing and displaying images from a CMOS or CCD camera device. According to one embodiment, fiber optics run semi-circumferentially or along walls of the cannula / dilator and terminate at about a centimeter from the distal end of the cannula / dilator, thereby preventing illumination from “bottoming out” at the floor of the incision. According to one alternate embodiment, the light fibers may be fashioned in an annulus around one or more camera chips to provide illumination and video of the surgical site. In still another embodiment, the light fibers may be replaced by light emitting diodes in a more remote light source or alternatively at the distal-tip of the CMOS or CCD camera device.

A back for an office chair comprises a peripheral frame shaped generally to outline the back of an occupant in the chair; a lumbar base structure attached to the frame; and a lumbar back support for an occupant of the chair connected to the lumbar base structure and extending toward the lumbar area of an occupant through an adjustable connection. The adjustable connection helps to provide comfort to the occupant and comprises one or more of a detent to allow adjustment of the height of the back support in relation to the frame, a movable joint to allow rotary motion of the lumbar back support in relation to movement of the back of the occupant, and an extensible connection to allow adjustment of the distance between the lumbar base structure and the lumbar back support. The chair back may also comprise at least one movable and flexible LED light supported by the back for reading comfort and may contain electrical circuitry to supply power to the LED light. The light may be removable with an electrical plug-in connection.

An intraocular lens (30) having focusing capabilities permitting focusing movement of the lens (30) in response to normal ciliary body (24) movement incident to changes in the distance between the eye and an object under observation is provided. The lens (30) is designed for surgical implantation within the capsule (20) of an eye (10) and includes an optic (32) and an optic positioning element (33) which cooperate to form the lens (30). Accommodation is achieved by relying upon the thickening and thinning of the optic (32) as a result of the normal retracting and contracting of the ciliary body (24) in response to the distance of an object from the viewer.

An LED chip (2) is composed of a p-GaN layer (10), an n-GaN layer (14), and an MQW emission layer (12) that is sandwiched between the GaN layers (10 and 14). Each layer is made of a GaN semiconductor. Light exits the LED chip (2) through the n-GaN layer (14). A p-electrode (16) of the LED chip (2) has a surface profile (24B) defined by a plurality of columnar projections (24A) formed in a uniformly distributed relation on the surface facing toward the p-GaN layer (10). The p-electrode (16) is in contact with the p-GaN layer (10) at the top surface of each projection (24A).

A flexible lighting device, comprising an elongated flexible tube including a translucent tubular shell with opposed tube ends, a flexible helical circuit board positioned in said tube extending between said opposed tube ends, said flexible helical circuit board having an exterior surface spaced from said tubular shell. Electrical circuitry is mounted to the circuit board and is connected to an external input source and an output source of electrical power. A plurality of light emitting diodes (LEDs) is mounted to the exterior surface of the helical circuit board and is electrically connected to the electrical circuitry. The LEDs are positioned adjacent to the tubular wall. The invention includes a method of making the flexible lighting device including providing a parallelogram-shaped flat circuit board having long edges and short edges with acute angles and obtuse angles and further including a stiffening member embedded with said flat circuit board. Electrical circuitry mounted to the flat circuit board and LEDs mounted to the flat circuit board and to the electrical circuitry thereon, are all rolled and extended into a flexible cylindrical circuit board having spaced spirals and gaps that hold the LEDs, and then inserted into the flexible tubular housing. Power input and power output connectors are added to the electrical circuitry of the flexible helical circuit board, and connector end caps are secured to the opposed ends of the tubular housing.

A display device is provided which is capable of controlling luminance of a pixel by a bias voltage of a light emitting device making up the pixel to change a current that flows through the light emitting device.EL (ElectroLuminescent) devices, TFTs, data lines, scanning lines, and variable bias lines are disposed in a matrix form. A bias voltage control circuit, in response to judging information fed from a judging circuit, outputs control information to a variable voltage generating circuit. The variable voltage generating circuit, in response to the control information, controls currents that are passed through the variable bias line to the EL device so that the EL device emits light at a value of the luminance corresponding to the fed current.

An optical adapter system for a smart-phone has a lens and a light transmission guide within a housing. The adapter lens is located at the distal end of the housing in optical alignment with the smart-phone's camera lens, and the light transmission guide extends from one end that is adjacent to the smart-phone's light source toward the distal end of the housing and directs light outside of the housing to the subject being imaged. The optical adapter is preferably used in combination with the smart-phone as an ophthalmic examination tool and can be used with a computer program that runs on the smart-phone's processor. The computer program can be calibrated for use with the particular optical adapter and can be used to control the smart-phone's imaging system, such as varying the intensity of the light source, and can determine a refractive error in a patient's eye.