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感光材料的解象力是感光材料重要性能之一。它通常是用投影解象力测定计进行测量。在这种仪器中,测量结果依赖于显微物镜的象质和相对孔径的大小。所测出的解象力数值,随显微物镜的相对孔径增大而增加。但如果采用相对孔径很大的物镜(例如其数值孔径为0.95时),则碰到物镜的视场小,标板成象景深很小,增加了测量的困难。此外,在这种投影方法中,由物镜所形成的标板的象的反差,
Resolution of photographic materials is one of the important properties of photographic materials. It is usually measured by a projection resolution tester. In this instrument, the measurement results depend on the image quality of the microscope objective and the relative aperture size. The measured value of the force of resolution increases with the relative aperture of the microscope objective. However, if an objective lens with a relatively large aperture (for example, a numerical aperture of 0.95) is used, the field of view colliding with the objective lens is small and the target depth of field of the target plate is small, which increases the difficulty of measurement. In addition, in this projection method, the contrast of the image of the target formed by the objective lens,