891 results about "Artificial light" patented technology

An illumination maintenance system for maintaining a desired illumination profile in a space throughout at least a portion of a day where the illumination sources include daylight and artificial light, the system comprising a first sensor for sensing an illumination level in at least a portion of the space, at least one window treatment for at least one opening for allowing daylight into the space, the window treatment selectively altering the amount of daylight entering the space, a plurality of electric lamps providing artificial light to supplement the daylight illumination of the space; the electric lamps being dimmable, a control system controlling the at least one window treatment and the plurality of electric lamps to maintain the desired illumination profile in the space, the control system controlling the plurality of electric lamps so that the dimming level of each lamp is adjusted to achieve the desired lighting profile and compensate for the daylight illumination in the space throughout at least the portion of the day; and the control system further operating to adjust the window treatment in the event of sun glare through the opening to reduce the sun glare and such that when the desired illumination profile within a defined tolerance is achieved, the control system stops varying the dimming levels of the lamps and the adjustment of the at least one window treatment.

A countertop gardening appliance can include a base sized and dimensioned to fit on a countertop, a vessel removably supported by the base, the vessel defining a closed lower portion for storing a liquid, and an open upper portion, a gas diffuser located in the vessel, a gas pump located within the base, a conduit connecting the gas pump to the gas diffuser, a one-way valve in fluid communication with the conduit, a growing surface covering the open upper portion of the vessel, the growing surface including a receptacle adapted to receive a seed cartridge, a liquid level gauge indicating a level of the liquid in the vessel, a hood supported above the growing surface by a support arm connected to the base, the hood including an artificial light source, and a controller located within the base, the controller adapted to activate the artificial light source and the gas pump on predetermined time cycles.

The invention discloses an environment control plant factory through seal-typed artificial light, which comprises the following parts: fender structure, air circulating system, temperature adjusting system, moisture adjusting system, CO2 supplying system, light supplying system, control system based on inserted network technique and automatic power-metering system, wherein the systems are seal, heat-proof and light-tight, which provides clean and fitful growing environment for plant. The invention saves cost and energy consumption, which realizes normalized and standardized cultivating management and planning manufacturing.

New and unique improvements of prior known fiber optic sights for firearms with day and night time capabilities are disclosed that comprise (A) a sight base, (B) a fiber optic rod mounted in said base having an angle cut at the distal end which is positioned on the underside of the rod, and (C) an artificial light insert that is positioned in a cavity in the fiber optic rod. The cavity is sealed with a fiber optic rod plug and epoxied using an optically clear epoxy. The sight provides increased light output, co-located day and night sight views with increased illumination during the day, and uses a low power tritium insert for night time use. At night the sight achieves a transition from a bright ring during the day to a small central dot at night while maintaining the same color light for both.

The invention discloses a method for measuring positioning points based on a laser tracker in a docking process of airplane parts. The method provided by the invention comprises the following steps of 1, establishing a model of transformation between an airplane global coordinate system and a laser tracker measure coordinate system according to common observation points, 2, acquiring current calculating positions of positioning measure points of airplane parts according to a process joint sphere centre position, and 3, controlling and driving a laser tracker to search current accurate positions of the positioning measure points of the airplane parts from the current calculating positions according to a cross helical search method and to carry out automatic measure. The method provided by the invention has the advantages that 1, an advanced laser measure technology is adopted so that the airplane assembling measure precision is improved; and 2, a measure process does not need artificial light introduction and full automatic search measure of a docking assembling process is realized according to an algorithm so that working efficiency and measure precision are greatly improved and working strength of workers is reduced.

The present invention relates to an artificial light system for modulating circadian rhythms, increasing vigilance and influencing light-associated psychological conditions such as seasonal affective disorder. The system of the invention comprises a source of a green and/or red light and a source of blue light both light sources being controlled by a computer to provide predetermined light conditions. More specifically, the computer is programmed to provide pulses of blue light and continuous or pulsed red light, to enhance the efficacy of blue light, reduce blue-light hazard and avoid stroboscopic effect.

Energy efficient transmissive and transreflective display devices use ambient light from a natural or artificial source to supplement light supplied by a backlight. Ambient light passes through a transmissive diffuser to a rear surface of a transmissive display panel. Additional energy efficiency is achieved by using one or more photo-sensors to detect the amount of ambient light and automatically adjusting the backlight intensity as a function of photo-sensor output. As a result, backlight intensity and power usage can be minimized while maintaining the viewability of images shown on the display.

A ceiling mounted lighting fixture for insertion in a ceiling grid wherein the source of artificial light is a plurality of light emitting diodes.

An illumination maintenance system for maintaining a desired illumination profile in a space throughout at least a portion of a day where the illumination sources include daylight and artificial light, the system comprising a first sensor for sensing an illumination level in at least a portion of the space, at least one window treatment for at least one opening for allowing daylight into the space, the window treatment selectively altering the amount of daylight entering the space, a plurality of electric lamps providing artificial light to supplement the daylight illumination of the space; the electric lamps being dimmable, a control system controlling the at least one window treatment and the plurality of electric lamps to maintain the desired illumination profile in the space, the control system controlling the plurality of electric lamps so that the dimming level of each lamp is adjusted to achieve the desired lighting profile and compensate for the daylight illumination in the space throughout at least the portion of the day; and the control system further operating to adjust the window treatment in the event of sun glare through the opening to reduce the sun glare and such that when the desired illumination profile within a defined tolerance is achieved, the control system stops varying the dimming levels of the lamps and the adjustment of the at least one window treatment.

Systems and methods of calibrating heliostat parameters for subsequent open-loop sun-tracking, the calibration based on driving artificial light source reflections from one or more heliostats into one or more image sensors.

A method for producing an algal oil is provided. The method includes continuously providing a growth medium and an algal strain to a bioreactor at a predetermined fluid flow rate; illuminating the growth medium and algal strain contained within the bioreactor by a first artificial light source for a time sufficient to effect lipid production by the algal strain; continuously withdrawing a portion of the growth medium and algal strain contained within the bioreactor at the predetermined fluid flow rate; and treating the withdrawn portion of the growth medium and algal strain to produce and isolate a lipid produced by the algal strain.

Self-glowing phosphorescent blends comprises of silicates, phosphate, and their compounds with aluminates (e.g. alumino-silicates and alumino-phosphate) phosphors are disclosed. These blends can be optically charged by exposure to sunlight or artificial light sources, and are able to emit visible light for hours in darkness without the need of electricity or consumption of materials. Such optical charging-discharging cycles can be repeated at least 1000 times. These blends can be used to form many commercial products and used in many applications such as: self-glowing paints or coating blends, self-glowing adhesive tapes, self-glowing foils, self-glowing glues and sealants, self-glowing ceramic glazes, self-glowing writing and printing inks, self-glowing papers and stickers, self-glowing textiles and cloth, self-glowing glasses, and self-glowing plastic composites. The “self-glowing” refers to the ability to emit visible light or photon, without simultaneously being externally excited, or consumption of energy (like lamps) or materials (like candle) at the same time. These self-glowing blends or composites can glow in the darkness without consuming electricity and can be utilized in the following applications:

• • 1. Self-glowing marking, labeling, decoration, film coating, and paintings on the body of bicycles, automobiles, ships, and aircrafts. Such utility will display the contour, the location, and color of the subject's body at night or in darkness with the benefits of decoration and safety of traveling.
  • 2. Self-glowing marking, labeling, decoration, film coating, and paintings on the walls, the swimming pools, stairs, steps, and other outstanding objects inside or outside of a building. Beside apparent decoration utility in the darkness, they can also show the contour or locations of the objects in the darkness to avoid injury related liability.
  • 3. Low-level lighting source, i.e. “Electric less” lamps. By applying the blend on artificial lamp surfaces, they can self-glow in the darkness for hours after lamp is turned off. When lamp is back on, they can be optically excited and charged up, while shifting the lamp color to longer wavelength and warmer appearance.
  • 4. The blends can be utilized in many other special self-glowing products to save electricity and pollution and prevent safety hazards in darkness. For example, self-glowing paper and ink will allow people to write in the darkness without need for lamps. Self-glowing paint, tapes, ceramic glaze, and labels will allow people to act in the darkness without the need for electric lamps. Self-glowing glass and plastic articles will decorate or display at night without need for electric lamps. Besides conserving electricity and environment, self-glowing products may be used to direct traffic and prevent injury associated with power outage or electric lamps failure. These products also provide convenient safety measures in products such as self-glowing textiles that pedestrian and bicyclists can wear at night, without the need for electric lamps.

An artificial and natural lighting system placed in the roof of a building that is substantially self-contained and powered. A photovoltaic cell provides electricity stored in a battery to power light emitting diodes. A highly reflective interior coating applied to the light shaft maximizes lighting intensity. A sensor detects illumination intensity and temperature within the light shaft to control the balance of natural and artificial light provided to maintain predetermined illumination intensity. The light shaft is insulated to reduce heat transfer and a thermal collector removes heat from the building. In one embodiment, a Fresnel lens is utilized to focus natural light onto the photovoltaic cell. In another embodiment, conventional fluorescent lighting powered by external line voltage is combined with light emitting diodes powered primarily by a rechargeable battery. The present invention, being substantially self-contained, is easily retrofitted to existing buildings with a minimum of connections and provides substantial energy efficiencies in illuminating the building.

The invention discloses a light supplement method for greenhouse plant cultivation. At present, filament lamps, fluorescent lamps, sodium lamp, high pressure mercury lamps and the like are used as the main artificial light sources for supplementing light in greenhouse plant cultivation in China, but the emission spectra of these artificial light sources are incapable of well satisfying the selective demands of the growth of plants for light and the light utilization rate is low. The invention is characterized by using a light supplementing system to supplement light to greenhouse plants, wherein the light supplementing system comprises an LED mixed light lamp, a controller, a light intensity detecting device and a light source automatic lifting device; the controller comprises a microprocessor, a clock unit connected with the microprocessor, a serial communication port unit and a light intensity detection device; the microprocessor is connected with the LED mixed light lamp through an (input/output) I/O port wire; and the LED mixed light lamp is arranged on the light source automatic lifting device. In the invention, the problems of low efficiency of greenhouse light source, low utilization rate of effective physiological radiation light, overhigh operation and maintenance cost, overhigh energy consumption and the like are solved.

An apparatus, method, and system of gathering information useful to derive the velocity of the free surface liquid flow in an open channel flow. The method involves recording successive images of controlled surface waves on the open channel flow with sufficient resolution to derive spread of fronts of the controlled surface waves, using image velocimetry to derive celerity of controlled surface waves, and inferring the velocity vector field of the underlying liquid flow using wave theory elements or calibrations. An apparatus according to one aspect of the invention uses an artificial nonintrusive mechanism to set up the controlled surface waves, uses artificial light to illuminate the controlled surface wave to accentuate its affronts, digital camera to capture the successive images. Software can be used to utilizes image velocimetry and to infer the velocity vector field.

A process for photomorphogenically enhancing plants is presented wherein a natural or artificial light source emits light through a transmittive material. The material is optionally borosilicate glass with a steep edge situation at or near 280 nm so as to selectively filter out light in the UVC or low UVB regions. The glass allows high transmissibility such that as much as 98% of all light at or above the edge situation passes thorough the material. The percent transmission and edge situation may be defined by glass thickness or by combining multiple types of glass. The light is then contacted with a plant whereby a photomorphogenic response is elicited.

A light sensor is used to detect ambient light conditions. According to an example embodiment, a light sensor (112) detects color temperature and, in some instances, intensity characteristics of ambient light (120, 130, 140) in an environment and uses these detected characteristics (116) to determine the location of the sensor relative to natural and artificial light sources. This location determination is used to selectively operate circuits in a device such as a hand-held telephone, computer device or personal data assistant (PDA).

The invention discloses an artificial light cultivating method of dendrobium candidum, belonging to the technical field of medical plant cultivation. The method comprises the following steps: naturalized young plants are transplanted to a nutrition pot or a potted tray containing base material and placed in a three-dimensional cultivating shelf of an artificial light closed plant factory; wherein cultivating conditions are as follows: the illumination intensity is 60-150 mu mol.m-2.s-1; the illumination time is 9-12h.d-1, the temperature is 24-27 DEG C; the relative humidity is 65-80%; the CO2 concentration is 400-800 mu mol.m-1; and the air velocity is 0.3-0.6 m.s-1; after the young plants are transplanted, atomizing keeps the humidifying state of leaf surfaces of the young plants before 2 weeks; after two weeks, the young plants are watered; according to the principle of keeping the humidification of the base material, macroelement nutrient solution is applied every 7 to 15 days; microelement nutrient solution is applied every 25 to 35 days; bottom surface is watered every 3 to 5 days; the young plants are harvested after being cultivated for 1.5 to 2 years and every half year is a picking time. The method shortens the production period, guarantees the uniform quality of the products, increases the yield, and is easy to realize standardization, industrialization and scale production.