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球镜片的顶焦度检定是通过一级焦度计直接测量来实现的,检定时,将被检球镜片放在焦度计的镜片支座上,移动被检球镜片,使球镜片的光学中心与仪器十字中心重合,并使棱镜度为零或最小,此时的读数即为被检球镜片的球镜度。文章以分度值0.01D的一级焦度计对球镜片的顶焦度进行检定,分析其测量不确定度。
The vertex power of the ball lens is measured directly by the first-level power meter. When the test is performed, the ball lens to be examined is placed on the lens holder of the power meter, the ball of the ball to be examined is moved, the optics of the ball lens The center coincides with the instrument cross center, and the degree of prism is zero or minimum. At this time, the reading is the spherical degree of the ball being examined. In this paper, the first-order pyrometer with graduation value of 0.01D was used to test the vertex power of the spherical lens, and its measurement uncertainty was analyzed.