Bernard J. Lechner
Bernard J. Lechner is an electronics engineer and formerly Vice President, RCA Laboratories, where he worked for more than 30 years covering various aspects of television and display.
Mr. Lechner is a Fellow of the IEEE, the Society for Information Display (SID) and the Society of Motion Picture and Television Engineers (SMPTE). In 1971, he was named the first recipient of the SID Frances Rice Darne Award for his outstanding contributions to matrix displays and in 1983, he was named the first recipient of the Beatrice Winner Award for his contributions to SID. He holds ten United States patents and has widely published in the areas of displays and television systems.
In 2001 he was awarded the Progress Medal by SMPTE for his many contributions to the technologies essential to today's television systems.[1] Mr. Lechner received two RCA Laboratories Outstanding Achievement Awards and a David Sarnoff Team Award in Science. In 2000, the Advanced Television Systems Committee (ATSC) established the Bernard J. Lechner Award in his honor.
Mr. Lechner holds a BSEE degree from Columbia University.
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Lechner distance [edit]
The Lechner Distance chart illustrates the optimal viewing distances at which the human eye can best process the details a HDTV resolution has to offer.[2] For example, the optimal viewing distance to a 42 inches (110 cm) 1080 HD TV is 5.5 feet (170 cm).
Mr. Lechner researched the typical distance between a viewer and their television screen by taking measurements in many American homes. The median distance compiled from all his data came out to 9 feet (2.7 m). Given this distance, a 1080 HD TV with a screen size of 69 inches (180 cm) would deliver the optimal viewing resolution.[3]
See also [edit]
References [edit]
- ^ "SMPTE Progress Medal Past Recipients". Retrieved 2008-02-17.
- ^ "How Far Should You Sit From Your HDTV". Retrieved 2009-07-02.
- ^ "Lechner Distance: The Number You Need to Know Before Buying an HDTV". Retrieved 2009-07-02.
External links [edit]
- TV Viewing Distance versus Screen Size
- Viewing distance calculator
- BBC R&D White Paper WHP092, Tests of visual acuity to determine the resolution required of a television transmission system, J.O. Drewery and R. Salmon, 2004.
