频闪仪发展经历

频闪仪，为旋转或振动的物体提供间歇性照明的仪器，以研究物体的运动或确定其旋转速度或振动频率。例如，机器部件可能看起来减速或停止;这种效果是通过以非常短、明亮的爆闪产生照明来实现的，当运动部件处于其运动的同一频率时，这种爆发总是会出现。

推荐阅读：频闪仪的工作原理和使用注意事项

stroboscope, instrument that provides intermittent illumination of a rotating or vibrating object in order to study the motion of the object or to determine its rotary speed or vibration frequency. A machine part, for example, may be made to appear to slow down or stop; the effect is achieved by producing illumination in very short, brilliant bursts that always occur when the moving part is in the same phase of its motion.

早期的频闪设备使用间歇性视觉或间歇光;在这两种情况下，带有狭窄径向槽的旋转或振荡圆盘要么允许以固定的间隔观察物体，要么允许光线在连续的瞬间照亮它，从而在它到达运动中的给定点时精确地暴露它。

Early stroboscopic devices utilized either intermittent vision or interrupted light; in both cases a spinning or oscillating disk with a narrow radial slot either allowed the object to be viewed at regular intervals or permitted light to illuminate it at successive instants, thus exposing it at precisely the times it reached a given point in its motion.

现代电子频闪仪采用充满氙气的放电灯或LED光源来产生非常短、重复、明亮的闪光。通常，闪光持续时间约为 1 微秒（0.000001 秒），闪烁频率为每分钟 110 至 150,000 次。使用特殊技术，已获得每分钟超过 500,000 次的闪频率。

The modern electronic stroboscope employs a gas-filled discharge lamp to produce very short, repetitive, brilliant flashes of light. Typically, a flash duration of about one microsecond (0.000001 second) and flashing rates ranging from 110 to 150,000 per minute are achieved. Using special techniques, flashing rates of more than 500,000 per minute have been obtained.

频闪仪产生的明亮短时闪光灯非常适合拍摄快速移动的物体。在此类摄影中可以使用持续时间为百万分之一秒的单次闪光，而对于普通摄影，闪光持续时间为千分之一秒是常见的。

The brilliant short-duration flash produced by a stroboscope is admirably suited for photographing rapidly moving objects. Single flashes with durations of one millionth of a second can be used in such photography, while for ordinary photography, flash durations of one thousandth of a second are common.

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