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一、概述 1、测量方法:依据JJG892-1995《验光机检定规程》; 2、环境条件:温度为室温,相对湿度不大于85%; 3、测量标准:客观式标准器,扩展不确定度U_1=O.07D,包含因子K_1=3;主观式标准器,扩展不确定度 U_2=0.04D,包含因子K_2=3; 4、配套设备:照度计,其技术指标符合JJG892-1995要求; 5、测量过程:将标准器装入检定支架中,调焦,同时调整支架
First, an overview 1, measurement methods: According to JJG892-1995 “optometry inspection procedures”; 2, the environmental conditions: temperature is room temperature, relative humidity less than 85%; 3, measurement standards: objective standard, extended uncertainty U_1 = O.07D, including the factor K_1 = 3; subjective standard instrument, the expansion of uncertainty U_2 = 0.04D, including the factor K_2 = 3; 4, supporting equipment: illumination meter, the technical indicators meet the requirements of JJG892-1995; Measurement process: The standard device into the test stand, focusing, while adjusting the bracket