快门曝光时间是评价照相机质量的重要指标,因此人们为了检查这一指标,设计了各种快门测试仪。由于快门测试仪是直接检查和调试产品的标准,所以它的准确度和稳定性,将直接影响照相机产品的质量。为此,对于大量生产高级照相机的工厂和验收进口快门测试仪的单位,就必需建立检定快门测试仪的标准,通过快门测试仪将这一标准时间传递给照相机产品。只有这样才能保证照相机曝光时间准确一致,在生产中达到量值统一、质量稳定,赶超国际水平。一、数字式快门测试仪的误差数字式快门测试仪原理方块图如图1所 Shutter exposure time is an important indicator of camera quality evaluation, so people in order to check this indicator, designed a variety of shutter tester. Because the shutter tester is the standard to directly inspect and debug the product, its accuracy and stability will directly affect the quality of the camera product. For this reason, for mass production of high-end cameras in factories and acceptance of imported shutter tester units, it is necessary to establish a test shutter tester standard, the shutter tester to pass this standard time to the camera product. The only way to ensure accurate and consistent exposure time of the camera, to achieve the unity of volume in the production, quality and catch up with international standards. First, the digital shutter tester error Digital shutter tester principle block diagram shown in Figure 1