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问:光学零件的N符合图纸要求,△N几乎等于零,为什么检验时象质有时候不好? 答:目前,我国各工厂检验光学零件象质的方法(如:用鉴别率板)是一种综合指标检验。因此,影响象质的因素较多(例如:光圈、角度差、平行差、中心偏等等),这些指标不仅影响象质,而且有着互相制约或补偿的关系。例如: 1.平面零件或棱镜的平行差不好,光圈虽然很规则,但从微观上看面形和光线的形式却如图1、图2,这种成象形式的出射光线不再
Q: Optical components of the N meet the requirements of the drawings, △ N is almost equal to zero, why check the image sometimes bad? A: At present, our factory inspection optical components like the quality of the method (such as: with the rate of plate) is a Comprehensive index test. Therefore, there are many factors that affect the image quality (eg, aperture, angle difference, parallel difference, center offset, etc.). These indicators affect not only the image quality but also the mutual restraint or compensation relationship. For example: 1. Plane parts or prism poor parallel difference, although the aperture is very regular, but from the microscopic view of the form and light is as shown in Figure 1, Figure 2, this imaging form of the light is no longer