These photographs show Pangolin's TrueK 50 system in action, running on 4-year-old Cambridge 6800 scanners at an ILDA-compliant speed of 50,000 points per second. The distance from scanners to the wall surface is 150 inches, or about 12 1/2 feet. A 36-inch long yardstick is taped to the wall to show scale.
Click on the photos for enlarged views of the test setup and of the test pattern.
| 7 degree scan angle | 15 degree scan angle | 30 degree scan angle | ||
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| This is the largest angle where the ILDA Test Pattern's circle is still touching the sides of the inner square. In other words, this particular TrueK 50 system is tuned to show the ILDA Test Pattern correctly at a speed of 50,000 points per second at a 7 degree scan angle. | This is a reasonable image size, where most parts of the ILDA Test Pattern still look good. Note that the circle no longer can reach to the edges of the inner square. This indicates that the scanners cannot properly show the entire ILDA Test Pattern at 15 degrees. | At 30 degrees and 50K, corners are rounding, although the type is still legible. The laser image would look better if the scan speed was reduced, to perhaps 30-40K. The pictured speed of 50K is probably too fast for this wide scan angle. |
This page last updated: Tuesday, June 19, 2007 08:54:25 PM
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