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发明公开
CN106154561A 显示装置 无效 - 撤回

显示装置
摘要：
本发明一种显示装置，其包括：像源，用于供给图像；与透镜组，该透镜组包括平行设置的第一菲涅尔透镜与第二菲涅尔透镜， 该第一菲涅尔透镜与第二菲涅尔透镜之间的距离可以调节，该第一与第二菲涅尔透镜的焦距分别为：f1'， f2'，像源供给的图像距离该第一菲涅尔透镜中心的距离为第一物距u1，该第一物距u1与第一菲涅尔透镜的焦距之间满足： f1'
摘要（英）：

A display device of the invention comprises an image source which is used for providing an image, and a lens group which includes a first Fresnel lens and a second Fresnel lens arranged in parallel. The distance between the first Fresnel lens and the second Fresnel lens is adjustable. The focus lengths of the first Fresnel lens and the second Fresnel lens are f1' and f2' respectively. The distance from an image provided by the image source to the center of the first Fresnel lens is a first object distance u1, and the first object distance u1 and the focus length of the first Fresnel lens meets f1'

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