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USAF 1951分辨率测试板有正片（透明背景上的铬图案）和负片（铬背景上的透明图案）两种形式。我们建议将正片图案用于显微镜和放大镜的成像效果测试。负片图案适用于准直仪和其他照明测试设备。USAF 1951分辨率测试板是盒装的，包括分辨率值对照表。测试板符合 MIL-S-150A。
| USAF 1951分辨率测试板的线对数/毫米 | ||||||||||||
| 元素 |
组数
|
仅适用于高分辨率 | ||||||||||
| -2 | -1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| 1 | 0.250 | 0.500 | 1.00 | 2.00 | 4.00 | 8.00 | 16.00 | 32.0 | 64.0 | 128.0 | 256.0 | 512.0 |
| 2 | 0.280 | 0.561 | 1.12 | 2.24 | 4.49 | 8.98 | 17.95 | 36.0 | 71.8 | 144.0 | 287.0 | 575.0 |
| 3 | 0.315 | 0.630 | 1.26 | 2.52 | 5.04 | 10.10 | 20.16 | 40.3 | 80.6 | 161.0 | 323.0 | 645.0 |
| 4 | 0.353 | 0.707 | 1.41 | 2.83 | 5.66 | 11.30 | 22.62 | 45.3 | 90.5 | 181.0 | 362.0 | — |
| 5 | 0.397 | 0.793 | 1.59 | 3.17 | 6.35 | 12.70 | 25.39 | 50.8 | 102.0 | 203.0 | 406.0 | — |
| 6 | 0.445 | 0.891 | 1.78 | 3.56 | 7.13 | 14.30 | 28.50 | 57.0 | 114.0 | 228.0 | 456.0 | — |
| Condition | Positive Test Target | Negative Test Target |
| Lighting Condition | Front-lit or general lighting | Back-lit or highly illuminated |
| Appearance of Bars | Dark bars on a bright background | Bright bars on a dark background |
| Application | General optical testing | High-contrast or back-lit testing |
| Substrate | Clear substrate with chrome patterns | Chrome-covered substrate with clear patterns |
| Example Use Case | Microscope calibration | Projection systems, back-lit displays |
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