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对于胶片连续高速运动的相机,通常采用光学补偿方法解决曝光时间内因胶片运动引起的像模糊。 胶片速度小于90米/秒时,采用光学玻璃棱镜作补偿元件是可行的。若片速高于100米/秒,用光学玻璃补偿器就很困难。高转速下,离心力很大,导致玻璃应力增大,致使玻璃不再是各向均匀介质,象质严重变坏。因此,相机摄影频率的提高将受到限制。 采用钢制转镜作光学补偿元件,其强度高,转速可以大大提高。使补偿式相机的摄影频率由10~3幅/秒提高到10~5幅/秒。
For continuous high-speed film camera, optical compensation method is usually used to solve the exposure time due to film motion caused by blur. When the film speed is less than 90 m / sec, it is possible to use an optical glass prism as a compensation element. If the film speed is higher than 100 m / s, with the optical glass compensator is very difficult. High speed, centrifugal force is large, resulting in increased glass stress, resulting in the glass is no longer uniform media, serious deterioration of the image quality. As a result, camera photography will be limited in frequency. The use of steel mirror for optical compensation components, its high strength, speed can be greatly enhanced. The compensated camera photography frequency from 10 to 3 / second to 10 ~ 5 / sec.