246results about How to "Reduce light pollution" patented technology

A lighting apparatus for retrofitting an existing luminaire includes a plurality of light emitting diodes (LED) of similar or differing wavelengths arranged and configured in at least one light bar array, a heat sink module thermally coupled to the at least one light bar array, an electronic power module electrically coupled to the at least one light bar array, and a plate coupled to the at least one light bar array, electronic power module and the heat sink module, the plate arranged and configured for coupling to the luminaire to provide quick and easy installation and replacement of the at least one light bar array, heat sink module and electronic power module into and from the luminaire.

A protective cover for an electronic device includes a front casing, a protective film beneath the front casing to enable use of a touch screen within the cover, the protective film including integral mesh portions having waterproof and dust proof properties to seal microphone and speakers on the electronic device, and a rear removably coupled to the front casing to substantially enclose the electronic device therein. The rear casing includes a plurality of mounting slots in spaced relation thereon, each mounting slot configured to receive a mounting clip to attach the cover with electronic device to an external article. The rear casing includes an aperture which aligns with a camera lens of the electronic device within the cover. The cover includes a lens assembly removably attached in the aperture of the rear casing to extend the viewing capabilities of the camera lens.

A method and apparatus for reading a target object having areas of differing light reflectivity on the target such as a handheld bar code reader having a first illumination pattern, a detector for measuring a distance from the reader to a target object, a system threshold, and a comparator for evaluating the measured distance against the threshold. Should the reader's internal circuitry and/or software determine that the measured distance is greater than the threshold, a second illumination pattern is activated that has power effective illumination for increasing the operable reading distance between the reader and the target object. The second illumination pattern can be generated from a secondary illumination source or through a lens internal to the reader.

The invention relates to a novel environment-friendly energy-saving curtain wall, which comprises a double-layer curtain wall system and a vertical greening system. The double-layer curtain wall system comprises curtain walls which are independently arranged as an inner layer and an outer layer, wherein each curtain wall is respectively composed of an aluminum alloy frame and glass, and the two layers of curtain walls connected with the aluminum alloy frame are provided with an air cavity in the middle; the vertical greening system is positioned in the air cavity between the two layers of curtain walls; a slotted aluminum plate is arranged at the bottom of the air cavity and is connected with the aluminum alloy frames in a sealing manner; and a layer of plant fiber which prevents moisture from losing is arranged at the bottom in a slot of the slotted aluminum plate, and soil filled with fertilizers covers the plant fiber and is used for plant growth. According to the novel environment-friendly energy-saving curtain wall, the vertical greening system is smartly introduced into the double-layer curtain wall system, moisture in the air cavity is increased by utilizing the transpiration effect of plants in summer, a small greenhouse is formed in the air cavity by using the photosynthesis of the plants to resist cold air in winter, oxygen released by the plants and filtered fresh air are conveyed into rooms all the year around, and therefore multiple problems existing in the curtain wall system are solved.

An active infra-red surveillance illuminator uses a statistically mono-directional micro-diffractive material overlaid on a bank of light emitting diodes (LEDs) to refract light from the LEDs onto a target image. This delivers energy distribution profiles out to a distance to match the aspect ratios of current wide-angle target and wide-angle camera surveillance systems. The distribution of refracted light is elliptical. This distribution can vary by using different diffractive material in conjunction with various numbers, brightness and angles of the LEDs in an LED bank. The effective range of the illuminators is greatly extended with this type of illumination. By limiting infrared (IR) radiation down to a 10 degree vertical window it renders the IR illumination much more effective for surveillance imaging by providing much more effective power on wide, ground-level scenes, and particularly enables multi-lane license plate capture.

The invention discloses an intelligent LED mining lamp capable of evenly changing size of an illumination area. According to the intelligent LED mining lamp capable of evenly changing the size of the illumination area, the size of the illumination area of light can be changed by changing the field angle of a reflecting cover through remote control. The reflecting cover of the mining lamp comprises a plurality of reflecting plates, a plurality of flexible pieces and a bottom plate, the reflecting plates are connected to the bottom plate in a hinged mode, and the flexile pieces and reflecting plates are arranged at intervals and connected. The outer wall of the reflecting cover is sleeved with a sliding ring in a sliding mode, and a pushing mechanism connected with the sliding ring is fixed on a lamp body of the mining lamp. A universal rotating mechanism is installed on the mining lamp, a remote control system, a microcontroller and an automatic positioning remote control device are arranged on the mining lamp, a light emitting lamp is arranged on the bottom plate, and a control end of the light emitting lamp, a control end of the pushing mechanism, a control end of the remote control system and a control end of the automatic positioning remote control device are respectively connected with the microcontroller. The intelligent LED mining lamp capable of evenly changing the size of the illumination area is mainly used in the technology for changing sizes of illumination areas of mining lamps.

A bill acceptor capable of reducing light pollution, avoiding errors and faults and enhancing detection accuracy and reliability is disclosed to include a housing defining a bill slot in a face panel thereof, a bill-receiving unit accommodated in the housing and including a holder base defining therein a bill passage in communication with the bill slot, a control module, a transmission mechanism and a recognition circuit assembly, the recognition circuit assembly including a sampling and validating module consisting of a plurality of light emitters and light sensors and controllable by the control module to validate the authenticity and face value of an inserted bill, and privacy filters mounted in a light path in the bill-receiving unit between the bill passage and the light sensors to filtrate external light sources and to let the light emitted by the light emitters pass toward the light sensors.

The invention discloses a brightness-adjustable car intelligent headlamp system based on the environment, and a method. The current environment of a car is preliminarily judged according to the car speed and light intensity, and the illumination brightness of the headlamp is adjusted based on the light intensity in the current environment, and the effects of energy saving and light pollution reduction are taken into account while meeting the lighting requirements. A design of the brightness-adjustable car intelligent headlamp system based on the environment is provided, and the brightness of the car lamp can be adjusted by collecting the environmental information through a sensor and judging by a master controller. The system comprises the sensor, the master controller and an actuator, thelighting brightness of the headlamp can be adjusted according to the driving state and the environmental information of the car, and energy is saved while providing a better road lighting effect fora driver.

The invention relates to an energy-saving and environment-friendly solar reactor for hydrogen production by methanol reforming and belongs to the technical field of photovoltaic heating equipment. Thereactor comprises a solar reception system, a methanol reforming reaction system, a tail gas dedusting treatment system and a support base, wherein the solar reception system, the methanol reformingreaction system and the tail gas dedusting treatment system are fixedly arranged on the support base sequentially, located on the same horizontal plane and communicated mutually. The energy-saving andenvironment-friendly solar reactor has the advantages that energy use ratio can be increased greatly, and losses of optical energy and waste heat can be reduced; dust pollution caused by nanoparticles and thermal pollution caused by excessive released waste heat are reduced, environment is protected, and energy is saved; operating data is monitored in real time by the equipment, feedback controlis realized by a computer, and the reactor has the characteristics of being high in automation degree, efficient, clean, environmentally friendly and energy-saving.

The invention discloses an LED garden lamp comprising a light source component and a mounting bracket, wherein the light source component comprises a plurality of independent lamp strips which are enclosed into a circle, two ends of the independent lamp strips are fixed on the mounting bracket, and a plurality of LED light sources are arranged on the lamp strips at intervals; the mounting bracket comprises two circular base plates, the plurality of lamp strips are arranged between the two base plates at intervals, and the radius r of a circle enclosed by one ends of the lamp strips is smaller than the radius R of a circle enclosed by the other ends of the lamp strips so that the entire lamp has a pagoda shape. The LED garden lamp provided by the invention has a pagoda lamp structure so that rays of an LED light source within the range of a power angle can radiate a road surface or other effective regions as much as possible, thus, the utilization ratio of the light source is increased, the light pollution is greatly reduced, and a good heat radiating effect is achieved.

The invention provides a prefabricated steel jacket box underground continuous wall and a construction method thereof. The prefabricated steel jacket box underground continuous wall comprises a prefabricated steel jacket box and a concrete material which is poured into the prefabricated steel jacket box, wherein the prefabricated steel jacket box is formed by a plurality of steel jacket box units which are arranged in sequence, and each steel jacket box unit consists of wall plates, structural steel frames and truss structures. The construction method for the prefabricated steel jacket box underground continuous wall comprises the following steps: 1, providing the steel jacket box units, and manufacturing a guide wall; 2, placing the steel jacket box units into the guide wall to form the prefabricated steel jacket box; 3, pouring top seal concrete into the prefabricated steel jacket box; 4, replacing slurry in the prefabricated steel jacket box by clean water; 5, pouring the concrete into the prefabricated steel jacket box; 6, pressing and injecting cement slurry on the outer side of the prefabricated steel jacket box and at the bottom of the guide wall; 7, excavating along with earthwork, and welding the positions of seams on the inner side of the prefabricated steel jacket box to form the prefabricated steel jacket box underground continuous wall. According to the prefabricated steel jacket box underground continuous wall and the construction method thereof, the on-site field is greatly reduced, the construction efficiency is high, moreover, the water sealing property is good, and the structural strength is high.

The invention relates to a method for preparing anti-reflecting glass by an acid corrosion method from a Na2O-CaO-SiO2 system glass matrix. The method aims to reduce the surface reflectivity of glass for photovoltaic purpose, photo-thermal purpose, buildings greenhouses and decoration purpose and increase the transmissivity of the glass, thereby increasing solar utilization rate, improving photoelectric or photo-thermal conversion efficiency, enhancing vision sharpness and reducing light pollution. The purposes of the method are achieved by the following technical scheme: firstly, the glass matrix is put in a corrosion tank holding acidic solution and corroded in the corrosion tank; and after being taken out and cleaned, the glass matrix is put in a drying oven to be dried, thus the anti-reflecting glass is obtained. The method has the benefits that the cost is low, and the glass is good in anti-reflecting performance and high in transmissivity; and the transmissivity of the glass to the visible light can reach 97%.

The invention relates to a reflector for a luminaire. The reflector comprises a cavity (101) for receiving a lamp intended to emit light and, located around said cavity, a first annular louver member (201) arranged in a first direction and a second annular louver member (202) arranged in a second, opposite direction.

The invention discloses a low-power vertical wind generator fixed with upper vane and lower vane supporting discs at the upper and lower ends of a center column, respectively, installing plural vanes between the two supporting discs through vane shaft coupling, where the lower end of each vane is connected with a vane windward angle drive mechanism through the vane shaft coupling, the upper end of the center column is connected with an anchor and the lower end of the center column is connected through a main bearing to a base, the main bearing is connected with a generator equipped with reducer through a power transmission mechanism provided with sensor; a wind vane is arranged above the anchor, and the sensor is connected with the windward angle drive mechanism through main controller and the whole is anchored with cable through the anchor, and the main bearing is of a compound pull bearing structure. And it effectively prolongs service life and has strong practicality.

The invention relates to a road illumination and pre-warning method based on environment and flow. The method is characterized by comprising the following steps of: (1) analyzing states of roads, determining a key point, and mounting a sensor group, a control cabinet and a lamp group; (2) mounting an information processor, and presetting threshold information of each sensor; (3) collecting traffic flow and environment information by the sensor group; (4) receiving and processing the information collected by the sensor through the information processor, and transmitting the processing result to the control cabinet; and (5) generating a control instruction after the control cabinet receives the information transmitted by the information processor, and controlling work of an illumination lamp group of the lamp group. The invention also discloses a road illumination and pre-warning system based on environment and flow. According to the method and system disclosed by the invention, assistant illumination and traffic pre-warning can be provided according to the environment and flow state of a road, manpower cost is saved, traffic safety is ensured, energy is saved, and environment is protected.

The invention relates to a DMD control method in high dynamic range imaging, relates to DMD light intensity modulation and control manners in the imaging detection field of high-dynamic-range radiation scenes, and aims at solving the problem that a present DMD light intensity modulation technology tends to cause multiple times of micromirror overturn in one frame of light intensity modulation. The DMD control method comprises the steps of limiting a light intensity modulation weight, and limiting the continuous time of each bit of a binary value of the light intensity modulation weight within one frame. The DMD control method can reduce the overturn times of the DMD in the imaging detection of high-dynamic-range radiation scenes, and improves the DMD light modulation precision.

The invention discloses an outdoor display screen and LED packaging devices thereof. The outdoor display screen comprises the LED packaging devices. Each LED packaging device comprises an LED light-emitting chip, a packaging body covering the LED light-emitting device, and a reflection layer covering a light-emitting face on the upper side of the packaging body, wherein the reflection layer enables light rays incident to the reflection layer from the packaging body to be reflected to a light-emitting face on the lower side of the packaging body. Through the mode, the outdoor display screen and the LED packaging devices can effectively promote the light intensity of a visual part, therefore achieves an energy-saving effect at the application end of the display screen, and can reduce light pollution.