For teachers teaching in multimedia, general projector light to bring harm to their eyes is very great. Therefore, teachers in order to avoid the glare of the projector light, often back to the students to lecture. This will produce in the classroom with the students a sense of distance, and teachers are often the bodys shadow will be projected onto the screen above the classroom affect student learning. The four launched the Epson projector, the use of special design, all with ultra-short projection distance function, EB-450Wi/450W to 59 inches in 7.1 cm projection screen, EB-460i/460 able 7.6 63-inch projection screen centimeter, far beyond the market of similar products. Epson Short Throw technology effectively avoid the projected image of the barrel distortion, image corners sharper, better presentation.
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