National-Standard Type A Resolution Chart A1
The resolution target is a key component for evaluating optical-system image quality. This series follows Type A targets in JB/T9328-1999,with A1–A7 sizes. Each has25units,each with four equally spaced stripe groups:horizontal,vertical,45°and135°. Positive and negative patterns are available;positive suits front illumination/general use,and negative suits back/strong illumination. Photolithographic etching and laser direct writing produce clear,uniform line pairs without broken/doubled lines and with nonfading markings.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Linewidth Range | 160 - 40 μm |
| Resolution Range | 3.125 - 12.5 lp/mm |
| Material | Optical Glass, Quartz |
| Notes | Positive Plate / Negative Plate |
Key Features
Datasheet
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