SCHOTT (Mainz, Germany) has developed a version of its N-BK7 glass that offers extremely high transmission (HT) for the types of prisms used in digital theater projectors. The new N-BK7HT guarantees a minimum transmission of 99.6% at a wavelength of 400nm and a thickness of 25mm. Within the visible spectrum range of between 400 and 700nm, the absorption coefficient is three times lower than with standard N-BK7. This means less heat is generated and the risk of image errors is much lower. By expanding its prism manufacturing capabilities, SCHOTT can now produce polished or coated prisms of up to 200mm in size. With smaller dimensions, surfaces with a flatness of up to •⁄10 and quality of up to 20/10 (Scratch & Dig) can be achieved.
For Free Info Visit http://info.hotims.com/28058-238
This week's Question: With backup cameras now mandatory in today's vehicles, screens in cars are increasingly becoming a standard feature. At the Consumer Electronics Show in Las Vegas this month, Corning Glass presented a demo of a new kind of...
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