| 摘要 |
The invention relates to an optical imaging system for separating images, more specifically a sweet spot beam splitter, for an autostereoscopic display, which allows for greater freedom of movement of at least one observer in a lateral direction as well as regarding the distance from the display by expanding sweet spots up to and beyond the size corresponding to the distance between the eyes. The observer can move within said area without losing the 3D impression such that the demands on the positional accuracy and the reaction time of the tracking system are lowered. The inventive sweet spot beam splitter comprises a first lenticular system (L1) and a second lenticular system(L2), the strip-shaped lenses of which are disposed parallel to each other while being offset by half a lens width in a vertical direction relative to the columns of the image matrix (M). The distance therebetween preferably corresponds to the focal length of the second lenticular system (L2). The information-carrying columns of the image matrix (M) are reproduced at twice the width onto the strip lenses of the second lenticular system (L2) by means of the first lenticular system (L1). The invention allows the user-friendliness of autostereoscopic displays to be substantially improved in many applications. |
