【国外标准】 Standard Test Method for Non-Subjective Optical Requirement Testing of Plano Protective Eyewear

5.1 This test method offers a procedure for evaluation of the refractive components of plano-protective eyewear.5.2 This test method has been specifically designed for protective eyewear that will not fit into conventional automatic/digital focimeters.5.3 This test method has been designed to provide a determination of the image formation quality of plano-protective eyewear.5.4 This test method offers a comprehensive refractive power measurement scanning protocol that measures the refractive power over a total 50 mm2 area in front of each eye. This measurement protocol known as the Multiple Gaze Direction Detailed Scan (MGDDS) measures the refractive powers of the zones of the plano-protective eyewear that are typically used as the wearer performs micro eye movements.1.1 This test method is used to quantify the amount of refractive power (spherical and cylindrical powers) found in planoprotective eyewear.1.2 This test method is used to quantify the optical performance of plano-protective eyewear as identified by the weighted root mean square average wavefront error.1.3 This test method may also be used to measure the refractive powers of other plano-protective eyewear or ocular devices, or both.1.4 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.