Abstract

In this study, an optical depth-sensing system whose focus distance was equal to its object distance was constructed by using a lens with a shortened depth of field. In addition to a mechanical control lens that captured two-dimensional images, a set of negative microlens array films used to shorten the depth of field was installed in this system. The developed system can scan a region and obtain the relationship curve between the focus distance and the motor step. Depth information is acquired by discerning the sharpness of the object’s outline and determining whether the captured object is in focus. The motor step is initialized when the object is in focus. The optical path of the developed system is simple, and its volume is minimal; thus, the developed system is suitable for being combined with cell phone lenses.

摘要

在这项研究中，通过使用具有缩短景深的镜头构建了焦距等于其物距的光学深度感应系统。除了捕捉二维图像的机械控制镜头外，该系统还安装了一组用于缩短景深的负微透镜阵列胶片。开发的系统可以扫描一个区域并获得焦距与电机步长之间的关系曲线。深度信息是通过辨别物体轮廓的锐度并确定捕获的物体是否在焦点上来获取的。当物体处于焦点时，电机步进被初始化。所开发系统光路简单，体积小；因此，开发的系统适合与手机镜头结合使用。