| 摘要 |
A stereoscopic viewing device to induce the line of sight of a viewer's eyes to converge on a three dimensional image formed from a pair of stereoscopic images. The device includes one or two prisms and blinders to block out ghost images which form to the sides of the superimposed image. The device further includes adjustment means to narrow or widen the viewing window within the prism(s). Various embodiments of the adjustment means includes blinders that are slidable panels within a guide track, slidable prisms within a guide track, or opaque tape which is cut to size and adhered to the surface of a prism. The stereoscopic device with a single prism also includes a unique process of forming the three dimensional image which includes viewing the superimposed images through a pair of open windows refracting the view of one of the eyes through use of a transparent prism, and screening the other eye to focus on the central three dimensional image.
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