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A metal-halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides (compounds of metals with bromine or iodine). It is a type of high-intensity discharge (HID) gas discharge lamp. Developed in the 1960s, they are similar to mercury vapor lamps, but contain additional metal halide compounds in the quartz arc tube, which improve the efficiency and color rendition of the light. The most common metal halide compound used is sodium iodide. Once the arc tube reaches its running temperature, the sodium dissociates from the iodine, adding orange and reds to the lamp's spectrum from the sodium D line as the metal ionizes. As a result, metal-halide lamps have high luminous efficacy of around 75–100 lumens per watt, which is about twice that of mercury vapor lights and 3 to 5 times that of incandescent lights and produce an intense white light. Lamp life is 6,000 to 15,000 hours. As one of the most efficient sources of high CRI white light, metal halides as of 2005 were the fastest growing segment of the lighting industry. They are used for wide area overhead lighting of commercial, industrial, and public spaces, such as parking lots, sports arenas, factories, and retail stores, as well as residential security lighting and automotive headlamps (xenon headlights).

Rotary type crop light-supplementing lamp

PendingCN110388596ASolve the costSolve efficiency problemsLighting support devicesHorticulture methodsGreenhouseMetal-halide lamp

The invention relates to a rotary type crop light-supplementing lamp. The rotary type crop light-supplementing lamp is used for supplementing light for crops and comprises a light source; the rotary type crop light-supplementing lamp further comprises a rotating mechanism, the rotating mechanism can be installed on the light source, and light emitted by the light source can penetrate through the rotating mechanism and then be emitted out; the rotary type crop light-supplementing lamp further comprises a light restraining mechanism, the light restraining mechanism is fixed below the rotating mechanism, and the light restraining mechanism can be used for restraining light beams emitted by the light source and obliquely irradiating the light beams on the ground. According to the rotary type crop light-supplementing lamp in the invention, the rotating mechanism cooperates with the light restraining mechanism, so that greenhouse light-supplementing common light sources such as an LED, a high-pressure sodium lamp, a metal halide lamp and the like are obliquely irradiated to the ground, a light area rotates along with the rotation of the rotating mechanism, and the rotating angular speedof the light area is equal to the rotating angular speed of the rotating mechanism. Compared with the common greenhouse light supplementing mode, the rotary type crop light-supplementing lamp has theadvantages that the illumination coverage area of a single lamp is greatly increased, bright and dark staggered periodic illumination is formed in the coverage area, that is, for the light intensity received by a single plant, a circle of rotation speed is treated as a cycle, and the proportion of an instantaneous illumination area to the total illumination area is the duty ratio.

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Owner:INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA

1 results about "Metal-halide lamp" patented technology

Rotary type crop light-supplementing lamp

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