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精密抗反射(AR)鍍膜吸收型中性密度 (ND) 濾光片

Precision Absorptive Neutral Density (ND) Filters

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精密吸收型中性密度 (ND) 濾光片採用 SCHOTT NG 彩色玻璃基材,以拋光處理達到 λ/4 的穿透波前畸變 (TWFD) 規格。這類濾光片兩面均鍍有 450 - 700nm 的抗反射 (AR) 鍍膜,可減少後向反射及濾光片堆疊的損耗及失真。精密吸收型中性密度 (ND) 濾光片提供 0.1 至 4.0 的光學密度,可堆疊達成客製光學密度,以符合應用需求。本系列中性密度濾光片供應 25mm 直徑或 50mm 方形尺寸,適用於機器視覺、成像或低功率雷射應用。

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Chart showing transmission percentage versus wavelength for various optical density levels of precision absorptive neutral
Chart showing transmission percentage versus wavelength for precision absorptive neutral density filters with different
Chart showing typical AR coating reflectance percentage versus wavelength for precision absorptive neutral density filters
 
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