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- Tests Resolutions from 4 to 228 lp/mm
- Ability to tests Multiple Field Points using 9 Targets
- Reduces Testing Time
The USAF pattern wheel is an ideal target to measure resolution at different field points within an imaging system’s field of view. The pattern is available on three different substrate sizes: 1” square, 1.5” diameter, or a 1” x 3” slide. Each size includes 8 USAF patterns in a circular pattern plus one pattern in the center. Each size is offered as positive (opaque pattern on clear background) or negative (clear pattern on opaque background).
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USAF Wheel Target 1" x 3" Positive
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NT59-203 | $200.00 |
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USAF Wheel Target 1" x 3" Negative
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NT59-204 | $200.00 |
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USAF Wheel Target 1" x 1" Positive
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NT59-205 | $195.00 |
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USAF Wheel Target 1" x 1" Negative
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NT59-206 | $195.00 |
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USAF Wheel Target 1.5" Dia. Negative
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NT59-207 | $195.00 |
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USAF Wheel Target 1.5" Dia. Positive
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NT59-208 | $195.00 |
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| Overall Specifications | |
| Substrate | Soda Lime Float Glass |
| Substrate Thickness | 1.5mm |
| Coating | First Surface Reflective Chromium |
| Line Width Tolerance | ±0.0005mm |
| Flatness | 2λ/inch |
| Surface Quality | 20-10 |
| Parallelism | less than 0.0005"/inch |
| Minimum Resolution | Group 2 Element 1 |
| Maximum Resolution | Group 7 Element 6 |
| Number of Line Pairs / mm in USAF Resolving Power Test Target 1951 | ||||||
| Element | Group No. |
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| 2 | 3 | 4 | 5 | 6 | 7 | |
| 1 | 4.00 | 8.00 | 16.00 | 32.0 | 64.0 | 128.0 |
| 2 | 4.49 | 8.98 | 17.95 | 36.0 | 71.8 | 144.0 |
| 3 | 5.04 | 10.10 | 20.16 | 40.3 | 80.6 | 161.0 |
| 4 | 5.66 | 11.30 | 22.62 | 45.3 | 90.5 | 181.0 |
| 5 | 6.35 | 12.70 | 25.39 | 50.8 | 102.0 | 203.0 |
| 6 | 7.13 | 14.30 | 28.50 | 57.0 | 114.0 | 228.0 |
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