62 results about "Dusk" patented technology

An illuminated sign, readable during the night or day, and suitable for use as a house number display, uses a single illuminatable panel, on which a number of stencils are plac critical flicker frequency ed. Each stencil is a rectangular piece of opaque material, such as plastic or metal, in which a central cutout is made in the shape of a number. Several of these stencils are arrayed in front of the illuminatable panel, so that only the light coming through the central cutouts is visible through the stencils. The illuminatable panel is made of an array of LED's, with a diffuser to produce a uniform illumination, and is powered by one or more batteries. A light detector senses the onset of dusk, which activates the illuminatable panel, turning it on, and leaving it on for four or more hours. A constant-current electronic system powers the LEDs, which are pulsed on and off at a speed greater than 90 Hz, which makes the sign appear to the human eye as constantly illuminated. A timer leaves the illuminatable panel illuminated only for a few hours, in order to maximize the life of the batteries.

An illumination system correlates solar time to a clock and controls lighting or illumination based on time. The illumination system may turn ON light source(s) at a first level at a turn ON time, correlated to be around or at dusk, and turn OFF light source(s) at a turn OFF time, correlated to be around or at dawn. The illumination system may reduce a level of light output, and hence power consumption, at a time after turning ON a light source, and increases the level of light output at a time prior to turning OFF the light source. Turn ON, turn OFF, decrease and increase times may be determined based on recent levels of light or illumination in the environment, for example via average or median levels over a number of previous daily cycles. Filtering may eliminate aberrant events.

An illumination system correlates solar time to a clock and controls lighting or illumination based on time. The illumination system may turn ON light source(s) at a first level at a turn ON time, correlated to be around or at dusk, and turn OFF light source(s) at a turn OFF time, correlated to be around or at dawn. The illumination system may reduce a level of light output, and hence power consumption, at a time after turning ON a light source, and increases the level of light output at a time prior to turning OFF the light source. Turn ON, turn OFF, decrease and increase times may be determined based on recent levels of light or illumination in the environment, for example via average or median levels over a number of previous daily cycles. Filtering may eliminate aberrant events.

An illuminated sign, readable during the night or day, and suitable for use as a house number display, uses a single illuminatable panel, on which a number of stencils are plac critical flicker frequency ed. Each stencil is a rectangular piece of opaque material, such as plastic or metal, in which a central cutout is made in the shape of a number. Several of these stencils are arrayed in front of the illuminatable panel, so that only the light coming through the central cutouts is visible through the stencils. The illuminatable panel is made of an array of LED's, with a diffuser to produce a uniform illumination, and is powered by one or more batteries. A light detector senses the onset of dusk, which activates the illuminatable panel, turning it on, and leaving it on for four or more hours. A constant-current electronic system powers the LEDs, which are pulsed on and off at a speed greater than 90 Hz, which makes the sign appear to the human eye as constantly illuminated. A timer leaves the illuminatable panel illuminated only for a few hours, in order to maximize the life of the batteries.

An omnidirectionally illuminated helmet emits light along a substantial portion of the helmet surface. An interior cushion is provided for comfort and safety of the wearer's head, while an outer shell is provided for protection from impacts. This outer shell includes a plurality of transparent displays intermingled with opaque sections or regions throughout the entire surface. An electroluminescent light source substantially covers the interior cushion. The outer shell is then placed upon the electroluminescent light source in a manner that aligns the plurality of transparent displays with the light source so that the transparent displays emit light therefrom. Transparent displays are located on the entire hemispherical constructs of the outer shell, including the sides, back, front, and top, so that light is emitted from virtually the entire helmet and can be seen from any vantage point. The margin of safety provided during dusk or night-time hours when vehicles may be approaching is substantially increased by illuminating the wearer's head from all angles.

An omnidirectionally illuminated helmet emits light along a substantial portion of the helmet surface. An interior cushion is provided for comfort and safety of the wearer's head, while an outer shell is provided for protection from impacts. This outer shell includes a plurality of transparent displays intermingled with opaque sections or regions throughout the entire surface. An electroluminescent light source substantially covers the interior cushion. The outer shell is then placed upon the electroluminescent light source in a manner that aligns the plurality of transparent displays with the light source so that the transparent displays emit light therefrom. Transparent displays are located on the entire hemispherical constructs of the outer shell, including the sides, back, front, and top, so that light is emitted from virtually the entire helmet and can be seen from any vantage point. The margin of safety provided during dusk or night-time hours when vehicles may be approaching is substantially increased by illuminating the wearer's head from all angles.

Accordingly, a primary object of the present invention is to provide a novel safety alert sign which provides a uniquely attention-getting and highly visible warning to oncoming drivers during both daylight, and, particularly twilight and dusk through the nighttime hours.

A lighting system that attaches to the tailgate of a vehicle for illuminating the tailgate. The lighting system includes at least one lighting element, which lighting element can be electrically connected to the standard light system of the vehicle, so that when lights of the vehicle are turned on, the at least one lighting element illuminates. The lighting system can further include a sensor-means, wherein the sensor means activates the lighting system to illuminate the lighting element upon the happening of a selected event, such as lowering the tailgate, or at darkness, dusk, or times of severe weather conditions, for example. The lighting element may be a single component, or, may consist of a plurality of lighting elements selectively positioned along the length of the top end portion of the tailgate.

An outdoor lighting control method and apparatus for use with an outdoor lighting fixture that automatically detects the changing length of the day and provides for automatically turning off the light after a shorter period of illumination during shorter summer nights and after a longer period of illumination during longer winter nights. The control method measures the elapsed time interval over which night sets in, for example, by sensing light levels characteristic of the onset of dusk and the onset of night and measuring the elapsed time between the two sensed light levels, and then automatically turns on the lighting fixture for nighttime operation for a duration that depends on the measured elapsed night-onset time.

An outdoor lighting control method and apparatus for use with an outdoor lighting fixture that automatically detects the changing length of the day and provides for automatically turning off the light after a shorter period of illumination during shorter summer nights and after a longer period of illumination during longer winter nights. The control method measures the elapsed time interval over which night sets in, for example, by sensing light levels characteristic of the onset of dusk and the onset of night and measuring the elapsed time between the two sensed light levels, and then automatically turns on the lighting fixture for nighttime operation for a duration that depends on the measured elapsed night-onset time.

A flexible reflective flat retractable pet leash is retained within a retractable housing device. The reflective pet leash reflects incoming light beams back in the same direction as emanated. The reflected light beam provides accurate illumination of the pet leash and the location of the pet during dusk or nighttime hours. This retractable pet leash is created by weaving or integrating reflective material fabric / tape within a flat leash portion. The reflective retractable pet leash is composed of a flat leash portion operable to sustain substantial tensile forces having a front and back side. Reflective means are integrated within the flat leash portion being operable to provide reflectivity. A retractable housing device having a handle portion, a retraction control member actuated by a retraction control switch, a housing body with an internal chamber appointed with a reel member, and an extension-retraction aperture is provided for housing the leash.

A device to repel and disperse waterfowl entering a proscribed area consists of a laser beam generator generating a laser beam, and a photoelectric switch is provided so that the inventive device is only activated from dusk to dawn. A motion sensor senses the presence of waterfowl and activates the light beam source that is aimed into the area. In the preferred embodiment, a timer is provided that may be set for a desired duration. When the desired duration has elapsed, the controller deactivates the light beam source. The light beam source may consist of a single laser beam or a multiplicity of laser beams shining into the protected area. In one preferred embodiment of the present invention, a single laser beam is split into a plurality or multiplicity of beams using a suitable beam splitter. The inventive device may be equipped with a system that enables one or more laser beams to sweep and oscillate through the protected area so that not only is full coverage of the area assured, but the elevation of the beams is at least, at some points in time, at the level of the eyes of the waterfowl so that the waterfowl can detect the presence of the laser beams and quickly flee the area.

Accordingly, a primary object of the present invention is to provide a novel safety alert sign which provides a uniquely attention-getting and highly visible warning to oncoming drivers during both daylight, and, particularly twilight and dusk through the nighttime hours.

The invention provides a large aircraft cockpit lighting environment simulation test system. The test system comprises a flying process cockpit light environment analog simulation subsystem, a cockpit light environment real-time recording subsystem and a cockpit lighting vision work efficiency test subsystem. The light environment analog simulation subsystem can simulate all-weather static and dynamic state light environment outside a cockpit in the flying process, the light environment real-time recording subsystem can be utilized for collecting environment light changes of all areas in the cockpit, and finally, a lighting vision work efficiency test subsystem is applied to assessing brightness uniformity, contrast and readability of all the areas of the cockpit. Compared with the prior art, the light environment simulation capability is high, the capacity of simulating the daybreak, dusk, thunderstorm, cloud penetration, noon light and other extreme light environments is achieved, meanwhile, the system has the light environment field collection and record functions, and the design problem of cockpit lighting is solved. Through the simulation test system, the dependency of the cockpit vision efficiency design on the aircraft test flight process can be eliminated, and in the cockpit lighting design stage, the effect verification of the lighting environment can be completed.

Accordingly, a primary object of the present invention is to provide a novel safety alert sign which provides a uniquely attention-getting and highly visible warning to oncoming drivers during both daylight, and, particularly twilight and dusk through the nighttime hours.

A self-illuminating glazing panel suitable for use in an automotive vehicle is provided for better night and dusk visibility for safety purposes and for brighter appearance during the day. The self-illuminating glazing panel integrates a luminescent layer, containing phosphorescent or fluorescent pigments or dyes, with a plastic substrate. The luminescent layer allows the panel to glow during the evening and night hours upon excitation by external light sources, such as headlamps and streetlights.

The invention unfurls a kind of way of taking off the sulphur by wet smoke and its equipment. The way uses the alkaline object from coal burnt to take off the sulphur. The equipment involves: removing dusk machine of wet smoke, removing mist machine of taking off water, and also include pond for taking off the alkaline object, water pond and the pond of taking off the sulphur. In the removing dusk machine of wet smoke, there are chemical reaction between smoke and the liquid for taking off the sulphur, taking off the pollution of the sulphur into acid water, used for recycling. The smoke is brought to the air after taking off the mist. Start smoke-water separated machine at certain times to prevent the system wearing knot, eject the dusk water after removing them. The way and the equipment have the strong function between liquid and air, using little water and eject little too, large field to use, eject dusk while taking off the sulphur, cost little when separating and investing.

A flexible omnidirectionally reflective pet leash and collar having a handle and a cylindrical central core is housed within a cylindrical omnidirectionally reflective sleeve that reflect an incoming light beam back in the same direction as it is emanated. The reflected light beam provides accurate illumination of the pet owner's hand, pet leash and the location of the pet during dusk or nighttime hours. This flexible omnidirectionally reflective pet leash is created by surrounding a central core with a cylindrically reflective sleeve comprising a flexible retroreflective sheet and being operable to surround the central cylindrical core thereby providing omnidirectional reflectivity. The flexible retroreflective sheet has retroreflectors bonded thereto with a transparent bond layer. Due to the circular construction of the cylindrically reflective sleeve, the reflective pet leash reflects light omnidirectionally over a large angle of acceptance, illuminating the pet owner's hand, the leash itself, and the pet's collar, thereby providing an improved measure of safety for both the pet and the pet handler.

The invention discloses a general all-weather source-free safe caution lamp with an equipotential electric transmission and distributing line. The left side of a lamp body is connected with a left electric transmission wire hook and the right side of the lamp body is connected with a right electric transmission wire hook. The left electric transmission hook and the right electric transmission hook are respectively in a form that a forward opening is connected with the electric transmission and distribution line in a hung mode and a backward opening is connected with the electric transmission and distribution line. A locking mechanism which can be adjustable vertically and fixes each hook with the electric transmission and distributing line is arranged below each hook opening. The lamp body comprises a lamp tube. A solar panel is installed on the lamp tube and is connected with a storage battery through a circuit. The solar panel and the storage battery are connected with a light-emitting diode (LED) lamp bead through a circuit. The general all-weather source-free safe caution lamp with the equipotential electric transmission and distributing line is reasonable in structure. Under the conditions that illumination intensity is weakened at dusk and night falls, alarming flashing light can be emitted so that various travelling vehicles under the electric transmission line spanning a road are reminded or cautioned to keep off the electric transmission line. The general all-weather source-free safe caution lamp with the equipotential electric transmission and distributing line is mainly used for external force prevention of the electric transmission line of an electric system.

The application relates to an earth gas light suppression method and system for a synchronous band target optical observation satellite. The system includes a satellite, an optical observation moduleand a baffle, wherein the orbit of the satellite selects a dawn-dusk sun-synchronous orbit, and maintains the attitude to be earth-oriented; the optical observation module is installed on the satellite and is perpendicular to the main axis of the satellite; and the baffle is installed on the optical observation module, and during the operation of the satellite, the baffle is arranged between the optical observation module and a ground plane, wherein the satellite is operated according to an attitude maneuver rule model to achieve the traversal observation of latitudes that need to be stared. By adopting the technical scheme of the application, the suppression of the earth gas light can be realized only through a simple structural design, and the operation is simple and the cost is saved.

The invention belongs to the machine learning technical field and relates to a multi-mark classification method, a multi-mark classification device, a medium and a computing device. According to the embodiments of the present invention, after the original positive example set and original negative example set of marks are obtained; by means of classification alignment, specific attributes and operation for inserting specific attributes of related marks are determined, so that the specific attributes can be adopted to indicate correlations between the marks, and therefore, the data and semantics of the marks can be enriched; and therefore, multi-mark classification is more accurate than a method only adopting a single mark in the prior art. For example, deserts are correlated to camels, a picture which is dominated by a camel and contains a small part of a desert is classified as a desert picture; and if a picture contains a lake at dusk, and if the reflection of a sinking sun is in the lake, the picture would be classified as a lake picture in the prior art, while, the reflection of the sun in the lake is correlated to the sinking sun, the picture will be classified as a dusk scenery picture by the method of the invention.

The invention provides an anti-dazzling intelligent dimming triangular warning board and aims to overcome two major defects that conventional LED flashy triangular warning boards are fixed and unitary in brightness and are not eye-catching under sunlight irradiation in sunny days and too dazzling in dark nights. The anti-dazzling intelligent dimming triangular warning board is composed of a battery (1), a control switch (2), a battery voltage boosting module (3), a flashing brightness control module (4), a photosensitive diode (5) and triangularly-arranged LED flashing light emitting tubes (6) which are electrically connected in order. The anti-dazzling intelligent dimming triangular warning board is characterized in that the flashing brightness control module (4) and the photosensitive diode (5) are newly added inside the warning board. The flashing brightness control module and the photosensitive diode are applied on the LED flashing triangular warning board at the same time, so that voltage going to LEDs (light emitting diode) can be increased or decreased automatically according to various actual brightness needs in sunny days, cloudy days and overcast days and at dusk and night so as to realize automatic dimming.

A flexible omnidirectionally reflective horse lead has a central portion, and mechanical attachment means to accommodate a bridal bit ring. The lead reflects an incoming light beam from a walker or horseback rider back in the direction from which it emanated, preventing dangerous encounters during dusk or nighttime hours. The omnidirectionally reflective elements may be incorporated in a horse harness, or in a halter suitable for horses roaming in a paddock or field. The reflective elements are created by surrounding a central braided rope of nylon or polyethylene fibers with a cylindrically braided reflective sleeve. The braided reflective sleeve is composed of narrow width reflective strips having a show surface with a flexible nylon retroreflective sheet sewn thereto. Reflectivity is achieved by thermally bonding corner cube or microsphere retroreflectors to a flexible polymeric sheet. Due to its braided construction, the reflective elements reflect light omnidirectionally over a large angle of acceptance, illuminating the horse harness or halter. An improved measure of safety is thereby provided for both the horse and the horseback rider.

Night Time Numbers consist of a solar, illuminated house identification fixture with a plastic body that contains an inner space for receiving solar powered batteries, a digital LED device with it's control circuit, a sensor unit for automatically turning the LED's off during bright time and on during dark time. The body and components provide a digital light numeral for the house number. An illuminated number, readable during the night or day, and suitable for use as a house number display, uses a single, independent, illuminatable body. The illuminatable body is made of an array of LED's, with a diffuser to produce a uniform illumination, and is powered by one or more batteries. A light detector senses the onset of dusk, which activates the illuminatable body, turning it on, and leaving it on for four or more hours. A constant-current electronic system powers the LED's, which are pulsed on and off at a speed greater than 90 Hz, which makes the sign appear to the human eye as constantly illuminated. The rechargeable batteries shall illuminate the body for dark hours and recharge during light hours.

A system to control solid state light sources, including a photosensor responsive primarily to wavelengths of light outside the emitted light band of wavelengths that the solid state light sources emit when the solid state light sources are in the ON state, and which produces a light level signal representative of a level of sensed light primarily for wavelengths outside of the emitted light band of wavelengths. A set of circuitry receives the light level signal representative of the sensed level of light from the photosensor, determines a contribution by the solid state light sources to the sensed level of light, and uses a compensated light level or a compensated threshold in assessing a dusk condition or a dawn condition when the solid state light sources are in the ON state to compensate for the contribution by the solid state light sources to the sensed level of light.

A water diverter has a double hose connection, a spigot and an outdoor light all mounted on a movable stake for providing an extra faucet at any desired location. The diverter allows a hose connection to another location, such as a recreational vehicle water supply, thereby extending the water source. The light on the water diverter is automatic, turning on at dusk, providing illumination that is required for safety and security purposes.

A method for regulating the brightness of a display device includes giving a cubic relational expression between environmental illuminance and the brightness of a display; giving correction methods for various parameters in the relational expression; and regulating the brightness of the display device according to the relational expression which is a cubic function. By the aid of the method, problems caused by nonlinear characteristics of human vision can be effectively solved, particularly, the problems caused by the nonlinear characteristics of the human vision under conditions that the environmental illuminance is high or the luminance is quite low in dawn and dusk are solved, and the brightness of displayed content of the display device is quite suitable for users.