679 results about "Bright light" patented technology

An active device provides protection from the sun or other bright light source for improved vision, using a variable opacity medium that is electronically controlled to cast a shadow on an eye of a user and / or to otherwise reduce the amount of the light incident on the eye, thereby reducing glare. Miniature cameras monitor the user's eye movements and the scene in front of the user. If a bright light is detected, one or more dark spots is created in the variable opacity medium that acts as a shade or light filter for a pupil of the eye. The variable opacity medium, cameras, and associated electronics can be used in connection with eyeglasses (including sunglasses), as part of a device worn by the user (such as a helmet), a windshield, mirror, or other optical element having a view port through which light can be seen by the user.

A display (200) with aligned optical shutter and backlight cells (239, 289) uses a patterned polymer-dispersed liquid crystal (PDLC) optical shutter material (230) and an electroluminescent (EL) backlight material (280) to provide a low-cost, low-current-drain display having good contrast in both bright-light and low-light conditions. The aligned, patterned optical shutter and backlight layers form pixel “windows” through which images printed on a background can be hidden or revealed. Specifically, a mask layer (250) bears the images and is inserted between the optical shutter and the backlight layers to show information images, cover inactive areas of the display, and cover electrode traces connecting active segments of the display. The display (200) is thin and flexible enough to be integrated with a touchscreen (290).

An GaN light emitting diode (LED) having a nanorod (or, nanowire) structure is disclosed. The GaN LED employs GaN nanorods in which a n-type GaN nanorod, an InGaN quantum well and a p-type GaN nanorod are subsequently formed in a longitudinal direction by inserting the InGaN quantum well into a p-n junction interface of the p-n junction GaN nanorod. In addition, a plurality of such GaN nanorods are arranged in an array so as to provide an LED having much greater brightness and higher light emission efficiency than a conventional laminated-film GaN LED.

An ophthalmic lens includes an optical zone having a center and a spaced-apart periphery. The optical zone has a first corrective power range in a first region and a second corrective power range in an annular region surrounding the first optical zone. The second corrective power is corrective of spherical aberration of an eye. The optical zone has a power profile that gradually changes from the first corrective power to the second corrective power. A central progressive zone that provides intermediate vision correction may be applied to a central region of the lens. The progressive zone has a diameter that is less than or equal to the diameter of an aperture of a pupil when subjected to bright light.

A compact, long lasting sensor for measuring components such as moisture in moving sheets including paper in a papermaking apparatus employs light sources that produce radiation within defined wavelength regions of interest and the light sources are modulated at high frequencies using non-mechanical techniques. A single detector with various radiation sources can measure at all frequencies while keeping information separated. Superluminescent light emitting diode or laser diode light sources can be directly electrically modulates for improved noise rejection. These higher power and bright light sources afford excellent fiber optic launch efficiency and permits the sensor to be scanned at much faster rates over the paper being monitored.

The invention discloses an automatic exposure method and a device thereof. When detecting that a moving object occurs in an image, the camera of the invention can adjust the exposure control fundamental parameters according to brightness information of the region where the moving object locates and expose the whole image according to the adjusted exposure control fundamental parameters, thus ensuring suitable brightness of the moving object region in the image, increasing the contrast and signal-to-noise ratio of the moving object region, avoiding over-darkness or over-exposure of the moving object region; simultaneously, ensuring acceptable brightness of the whole image region. Particularly, in conditions of over-weak or over-bright light, the moving object region in the image obtained by the automatic exposure method of the invention has suitable brightness, thus increasing the contrast and signal-to-noise ratio of the moving region and ensuring latter processes, such as movement tracking and moving object identification.

A system and method can mitigate or prevent contrast ratio issues due to bright light (e.g., light saturation) in a head up display (HUD). The head up display can include a waveguide combiner (or non-waveguide combiner) and a mitigator disposed to prevent or reduce bright light from being provided through the combiner. The bright light can be direct lunar light, direct solar light, or solar / lunar reflections. The mitigator dynamically selects and reduces bright background light which results in an increase of contrast ratio.

A portable device for the live scanning of fingerprint, facial and crime scene images and the wireless transmission of said images to a central host system for identity verification. The portable device has the ability to allow the user to operate the device with a single hand. It can scan and record live fingerprint slap or roll images (via optical, solid state, or video sensors). It also includes a baffle that assists with the mechanical alignment of the fingerprints on the fingerprint sensor receiving surface and prevents bright light sources from interfering with fingerprint scans. The portable device also can scan, display, and record latent fingerprint images. It also has other data receiving and transmission functions, such as displaying and recording facial and incident scene images in conditions ranging from well lit to total darkness, recording and playing back incident scene audio information for incident description and contacting voice recordings for identification. The portable apparatus can also scan, record, and interpret magnetic stripe, smart card, or bar code information from standard and non-standard cards. It also obtains, displays, and records geographical position for incident description, mapping, and directional instruction to the user. It further provides an emergency transmission for assistance and provides a short-range wireless link to a mobile unit or a direct wireless link to the central site. It also provides for entry by the user of text data for demographics or operator use through either keyboard or voice activation.

The invention discloses a teleoperation unmanned submersible for detecting and disposing a submarine target, and is applied to the field of detecting and disposing technologies for submarine targets in the limpidity water area and the muddy water area. A power propulsion device of the teleoperation unmanned submersible comprises four screw propellers installed on a submersible body frame, wherein a cable interface and a signal interface are combined so as to form a photoelectric composite cable interface; underwater detection equipment comprises submersible front detection equipment and submersible lower detection equipment; a forward follow-up bright light searching lamp, a follow-up glimmer camera and an acoustic lens of a detection sonar are fixedly installed on a pitching rotation cradle head; the pitching rotation cradle head generates pitching rotation relative to the submersible body frame so as to adjust detection and viewing angles of the submersible front detection equipment fixed on the pitching rotation cradle head; and submersible position and attitude sensor group realize exact locating on positions and attitudes of an ROV (remotely-operated vehicle), thereby improving the service property of the unmanned submersible, and expanding the application area of the unmanned submersible.

A colorless, odorless, non corrosive, non conductive fluid, non toxic, environmentally safe available in different boiling points and freeze points, which will not burn and will be used for all types of lighting sources for purpose of anti freeze (to not freeze) and cooling, to removing heat in all type lighting products, which will allow all types of lighting products to be pushed at much higher limits extending the life in all types of lighting. This fluid type of lights can be used in home, business, auto, motorcycle, truck, trailer and can be LED, Fluorescent or other forms of lighting, which there components and lighting elements needs to be cooled extending the life and allow the light to be operated at far above the normal setting achieving the maximum output possible making the light fire resistant when using this non flammable fluid to produce wide intense super bright light generation for greater illumination. The lighting product can be self contained or in different components linked together that can utilize this fluid to cool the ballast, component and light generation source internal or external.

The present invention discloses an automatic exposure method basing on the target area in the image. The method comprises the following procedures: (a) executing target detecting to the image of the currently detected frame to judge whether a target exists; (b) confirming the brightness value of the currently detected frame used for calculating the exposure parameter according to the brightness value of the target area in the currently detected frame and the brightness value of the target area in the previous detected frame when a target exists; and (c) calculating the exposure parameter according to the brightness value of the currently detected frame and executing automatic exposure adjusting to the subsequent image until the brightness of the last detected frame is confirmed and the exposure parameter is calculated. The method adopting the invention can facilitate that the target area in the image has appropriate brightness information relative to the total graph background. The signal-to-noise ratio of the target area is increase. The insufficient brightness or over exposure in the target area can be prevented. The effect is especially evident in the target backlight or bright light condition.

This relates to systems and methods for determining one or more physiological signals of a user using ambient light. The systems and methods can include one or more light sensors configured to measure light that has interacted with a user and one or more light sensors configured to measure ambient light. The gain of the one or more light sensors can be adjusted based on the levels of measured ambient light. For example, the gain of the one or more light sensors can be increased when ambient light levels are low (e.g., a low light environment), or the gain of the one or more light sensors can be decreased when ambient light levels are high (e.g., a bright light environment). In some examples, the systems can include a variable opacity element whose transmission properties (e.g., opacity and / or selected one or more wavelengths to pass through) can be varied.

An active pixel masking system for automatic glare suppression uses a variably transmissive screen such as an LCD in front of a lens. A measurement by an image sensor of oversaturated pixels from one or more extremely bright lights is used to generate corresponding opaque pixels in the variably transmissive screen, thereby preventing the excess light from entering the lens, and thereby clarifying the appearance of any objects near to the bright light. A continuous reading of a motion picture image is used to move the location and area of the opaque pixels in response to the motion and area of the light.

There is provided an illuminating device which includes: a surface light source including a plurality of light emitting diodes disposed two-dimensionally; a light condensing means comprising a plurality of Fresnel lenses which are disposed corresponding to respective light emitting diodes, and each of which converts a light from each light emitting diode into a substantially collimated light; and a light diffusing means disposed at the stage consequent to the light condensing means, and including a plurality of Fresnel lenses which have a smaller diameter and are arranged in a higher density than the Fresnel lenses of the light condensing means. The illuminating device is adapted to emit a highly bright light with excellence in brightness uniformity, and a light source unit incorporating the illuminating device disposed behind a liquid crystal panel is suitably used in an HUD.

The present invention provides a collision prevention automatic warning system, constructed to comprise a control circuit embracing a controller, a plurality of sensors, a light-emitter, a sound-emitter, an electric battery power supply, and a standby battery supply, therewith the system is installed in a vehicle. When a vehicle collision occurs, the sensor detects a signal and transmits same to the controller, whereupon the controller notifies the light-emitter and the sound-emitter, which thereupon emit a bright light and a loud sound respectively, and can also activate an automatic police reporting system, thereby promptly warning vehicles coming up from rear to pay heed to the collision and thus preclude further collisions from occurring, and having functionality to transmit a report to the police which can accelerate rescue time.

The invention relates to the field of lighting equipment, in particular to an LED table lamp. The LED table lamp comprises a lamp holder, a lamp bracket, a lampshade and a switch. An LED light source is arranged inside the lampshade. The lamp holder is connected with the lampshade through the lamp bracket. A mosquito repelling device is arranged on the lamp holder. An opening of the lampshade is provided with a concavo-convex lens. The LED table lamp is high in brightness and low in power consumption; a dim light mode and a bright light mode are adopted and controlled separately, and therefore the LED table lamp can be used flexibly according to actual requirements; besides, the LED table lamp is simple in structure and convenient to use, and people are prevented from being stung by mosquitoes when using the LED table lamp to study or work at summer night; the concavo-convex lens is arranged at the opening of the lampshade, light emitted by the LED light source is decomposed into a uniform area light source, and the final illumination light spot of the LED table lamp is a uniform light spot, so that the performance of the LED table lamp is improved, and eyesight protection is realized.

An image sensor including an array of pixel elements is operated according to two operation modes to modulate the conversion gain of the pixel to operate the image sensor based on the impinging light conditions. More specifically, an image sensor pixel element is operated in a high conversion gain mode for low light conditions and in a low conversion gain mode for bright light conditions. The low conversion gain mode implements charge sharing between the floating diffusion and the photodiode. The low conversion gain mode further implements partial reset where the photodiode and the floating diffusion are reset to the same potential and to a potential slightly less than the pinning voltage of the photodiode.

A hard-coated antiglare film that has excellent antiglare properties, prevents a glare phenomenon from occurring, and prevents white blur from occurring to have excellent display contrast in bright light. The hard-coated antiglare film includes a transparent plastic film substrate and a hard-coating antiglare layer containing fine particles. The hard-coating antiglare layer is formed on at least one surface of the transparent plastic film substrate. The hard-coating antiglare layer has a surface with an uneven structure. The hard-coated antiglare film has a total haze value ht in the range of 40 to 70%. The relationship between the total haze value ht and an inner haze value hi obtained due to scattering inside the hard-coating antiglare layer is a relationship of the total haze value ht≦the inner haze value hi.

The present invention discloses an automatic exposure method basing on the target area in the image. The method comprises the following procedures: executing target detecting to the image of the frame being detected currently to judge whether a target exists; confirming the brightness value of the frame being detected currently according to the brightness value of the target area in the currently detected frame and / or the detected frame beforehand; and executing automatic exposure adjusting to the subsequent image according to the brightness value of the currently detected frame. The method adopting the invention can lead to that the target area in the image has appropriate brightness information relative to the full figure background. The signal-to-noise ratio of the target area is increase. The insufficient brightness or over exposure in the target area can be prevented. The effect is especially evident in the target backlight or bright light condition.

The modular personal defense device is a hard, rigid, elongate baton that is capable of imparting impact force to an assailant or threat. The exterior may include a series of strengthening ribs, which may also impart further damage to an assailant. The interior is an essentially hollow cylinder configured to accept one of a series of modules. The modules are essentially externally physically identical, but include different electronic circuitry and mechanisms to provide different functions. A silicone controlled rectifier (SCR) electronic stun circuit is provided by one module, for imparting a stunning electrical shock and dissuading an assailant(s) due to the electrical arc produced. Another module produces an extremely bright light either continuously or in rapid pulses, to blind and disorient an assailant. Yet another module produces a piercing sound, while still other modules may be fitted axially or radially to the device to transmit an irritant spray.

The present invention relates to an LCD light-reducing apparatus, and to a vehicle smart mirror using the same, which are to be applied to the interior rear-view mirror or exterior side-view mirrors of a vehicle to protect the vision of the driver of the vehicle from bright lights or glares coming from behind him during nighttime drive. The LCD light-reducing apparatus according to the present invention comprises an LCD panel including at least one liquid crystal cell, and a power supply device for supplying a sufficient electric field to the LCD panel. The LCD cell includes a liquid crystal layer; and two substrate layers opposite one another with the liquid crystal layer at center thereof. The liquid crystal layer is filled with a compound including negative dielectric anisotropic nematic liquid crystals, a chiral material for inducing a cholesteric phase of the nematic liquid crystals to have a pitch of 1 to 4 times the cell gap of the liquid crystal layer, and dichromic dyes for being rearranged parallel to the nematic liquid crystals to transmit or absorb light in accordance with whether the electric field is applied or not. The substrate layer includes a tilted homeotropic alignment layer for arranging the respective nematic liquid crystals and dichromatic dyes in a first arrangement that is vertically aligned to the surface of the substrate layer, and an electrode for generating a sufficient electric field that passes through the liquid crystal layer to rearrange the nematic liquid crystals and dichromatic dyes in a second arrangement that is different from the first arrangement.

An active pixel masking system for automatic glare suppression uses a variably transmissive screen such as an LCD in front of a lens. A measurement by an image sensor of oversaturated pixels from one or more extremely bright lights is used to generate corresponding opaque pixels in the variably transmissive screen, thereby preventing the excess light from entering the lens, and thereby clarifying the appearance of any objects near to the bright light. A continuous reading of a motion picture image is used to move the location and area of the opaque pixels in response to the motion and area of the light.

The invention relates to a semi-rigid PVC (polyvinyl chloride) decorative membrane. The semi-rigid PVC decorative membrane comprises the following main raw materials in parts by weight: 100 parts of PVC resin powder, 18-23 parts of plasticizer, 3-5 parts of stabilizer, 25-35 parts of calcium carbonate, 4-6 parts of flame retardant, 6-9 parts of titanium white, 2-4 parts of soybean oil and 0.1-0.3 part of mold preventive; and the semi-rigid PVC decorative membrane is prepared through a calendering stage and an intaglio printing stage. The product provided by the invention is thin and semi-rigid, can not bubble in case of being laminated with glass and other materials, and can prevent broken glass from splashing and falling when the glass is broken; the addition of the flame retardant and the mold preventive endows the product with high-efficiency flame-retardant and mold-resistant properties, and the flame-retardant property and the mold-resistant property can be respectively up to B1 level and 0 level; and the product has long color retention time and long service life, and can soften bright light, partition space, enhance privacy and create a mild atmosphere.

A loudspeaker has an alarm and a luminous element, these being an improvement upon exiting loudspeakers having luminous elements. The luminous element is an illuminating lamp. A radiative cooling fin is mounted near the illuminating lamp. The use of radiator cooling firework permits a larger power light to be selected as the luminous element. This makes the loudspeaker capable of functioning as a substitute light source within an area. Also, the assembly employs an alarm with the loudspeaker. The brighter light emitted by the illuminating lamp on each loudspeaker provides better illumination. The lamp may also flash according to pre-programmed directions for the purpose of indicating a path and thereby helping people to escape from danger. Further, where the external power source fails, the loudspeaker assembly has a built-in emergency power source, ensuring that the loudspeaker and the illuminating lamp can still work normally.

The invention relates to an omnibearing lighting LED (light-emitting diode) packaging method and an LED packaging part. An LED chip and an electrode are firmly fixed on one or more pieces of transparent glass or transparent films by using a transparent crystal bonding adhesive, and then a transparent support on which the LED chip, the electrode and a welding line are fixed is erected and mounted in a transparent container. When the diode is electrified, the front surface of the LED chip on the erected transparent support can emit light normally, and the bottom part of the LED chip can also emit the brighter light through the transparent glass or the transparent films. By adopting the LED packaging method and the LED packaging part, the limitation that the brightest surface of an LED can not be displayed outwards due to a power supply conducting wire in the existing packaging technology can be eliminated, and the light extraction rate of the LED can be improved.

Transmission ion microscope. A bright light ion source generates an ion beam that is focused on a sample by an electrostatic condenser lens means. An objective lens focuses the ion beam transmitted through the sample to form an image. A projector lens enlarges the image and a phosphor screen receives the enlarged image to generate light allowing visualization of the image.

The invention relates to a color conversion screen printing ultraviolet curing organic fluorescence coating and the method for preparing the same. Said comprises prepolymer, active monomer, organic fluorescence coating, light initiator, dispersant agent, defoaming agent, levelling agent and adhesion promoter. The invention also relates to another color conversion screen printing waterborne thermal curing organic fluorescence coating and the method for preparing the same. It comprises film forming matter, diluting agent, organic fluorescence coating, disperant agne, waterborne defoaming agent, levelling agent and thickener. The coating is cured on ITO glass through screen printing and becomes color conversion film. The invention makes use of the property of fluorescence coating that it can emit brighter light under ultraviolet illumination. The fluorescence coating can be costed on display surface. The color and brightness will change when different light pass through said color conversion film. The invention is characaterized by simple process, fast curing speed, and good flexibility, aging resistant, good adhesion between film and glass and environmental friendly.