首页>
外国专利>
EVALUATION METHOD OF FOCUSING OF OPTICAL SYSTEM, ADJUSTING METHOD, FOCUSING EVALUATION DEVICE, ADJUSTMENT DEVICE, AND CHART DEVICE
EVALUATION METHOD OF FOCUSING OF OPTICAL SYSTEM, ADJUSTING METHOD, FOCUSING EVALUATION DEVICE, ADJUSTMENT DEVICE, AND CHART DEVICE
展开▼
机译:光学系统聚焦的评估方法,调整方法,聚焦评估装置,调整装置和图表设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
PURPOSE: To provide evaluation method and device of the position of the best image surface which can be evaluated easily and quickly. CONSTITUTION: The system is provided with a chart plate 11 where an edge image 13i can be formed, an optical system 15 where the image of the chart plate 11 can be formed, a light reception member 17 for converting an edge image 13i which is laid out at a position where the edge image 13i of the above chart plate 11 can be formed or near the position, and a sampling circuit for sampling an electrical signal outputted by the light reception member 17 in a direction crossing the edge image.
展开▼