In multimedia projectors in the early stages of its development as a light source, the halogen lamp

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Modern multimedia projectors are as good as, and in some respects superior to and familiar to us flat computer monitors and televisions. On the basis of the latest achievements of electrical engineering, optics and microelectronics developed and developing very rapidly, these modern devices. Every day, they are gaining more and more applications.
Due to its compactness, wever ducre lightness, ease of use and reliability without the projectors can not do any learning process or presentations and conferences that require demonstration of illustrative materials or control towers, as well as show business and the development of home theater wever ducre systems. Modern equipment includes a multimedia presentation, portable, handheld mini projectors. The key parameters for selecting a particular type of equipment are weight, size, and the intensity and saturation flux.
In multimedia projectors in the early stages of its development as a light source, the halogen lamp. However, due to lack of power and a minor emission spectrum of light output of halogen lamps on the transfer of bright and saturated images had only dreamed of.
Alternative substitute is to have discharge metal halide wever ducre lamps - is hermetically sealed glass bulb filled with an inert gas, and volatile metal (sodium or mercury) with two electrodes at the ends. In multimedia projectors are used specially developed in the 90s by Philips metal halide lamps of high pressure (above 100 atmospheres). Their main advantage - it's a long life, which is 6 thousand wever ducre hours, and the spectrum of radiation close to the sunlight. The main drawback - their value, which is 30% of the cost of the projector itself. In the mini projector light source is LED, but they differ little wever ducre light intensity.
A fundamentally new light source in projectors, which were presented by Casio at CES 2010, is a new laser-hybrid technology is a source of light. In the formation of light close to natural light flux along with a combination of blue, red spectrum is crucial in the overall spectrum of green color composition (about 60%). Hybrid technology transfer flux at times increases the intensity of the green spectrum and thereby enrich the overall color reproduction. Projected on the basis of a combination of blue and red LEDs, blue lasers with green phosphors, it transmits rich, vivid and sharp colors. At the same time, increased life expectancy and a projector in the calculation of up to 20 thousand hours and the contrast ratio and light color. The use of portable projectors hybrid technology eliminates the occurrence of rainbow effect and decrease wever ducre the percentage of ghost images that several times the quality of the video transmission of information and reduces maintenance costs.
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