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1 范围1.1 本标准规定了在检验片上用来评价投影器性能的图案,其位置,尺寸及胶片。1.2 本标准中叙述的检验片尤其能作下述检验:(1)鉴别率(2)抖动(3)畸变(4)光输出(5)综合画面质量注:推荐的使用方法见附录。2 总则2.1 USAF1951鉴别率检验标准或美国国家标准ANSI pH 3.609—1980《摄影鉴别率检验标板尺寸》规定的鉴别率检验标板均可用于本标准的检验片中。2.2最小鉴别率范围规定为每毫米1.0到20线对(L/mm)。若鉴别率值高于20L/mm,则应采用玻璃幻灯片或摄影胶片鉴别率检验
1 Scope 1.1 This standard specifies the pattern used to evaluate the projector performance on the test piece, its location, size and film. 1.2 The test piece described in this standard can in particular be used for the following test: (1) Identification rate (2) Jitter (3) Distortion (4) Light output (5) Integrated picture quality Note: 2 General 2.1 USAF1951 identification rate test standard or the United States National Standard ANSI pH 3.609-1980 “photographic identification test plate size” provisions of the identification test plate can be used in the standard test piece. 2.2 The minimum discrimination range is specified as 1.0 to 20 pairs per millimeter (L / mm). If the discrimination rate is higher than 20L / mm, you should use glass slides or photographic film discrimination test