| 摘要 |
An apparatus and method for projecting optical images from opaque or transparent objects onto a remote viewing screen includes a plane mirror combination and a reflective projection means. The plane mirror combination comprises an image inverting plane mirror and an image reversing plane mirror. The image inverting plane mirror is positioned angularly over the illuminated object and converts the upright and nonreversed object image into an inverted and reversed image. Disposed close by the image inverting plane mirror is the reflective projection means which comprises a parabolic concave mirror the parabolic concave mirror captures the inverted and reversed image and projects it onto the image reversing plane mirror near by as an enlarged, upright and reversed image. In return, the image reversing plane mirror reflects the enlarged, upright and reversed image onto the remote viewing screen as an enlarged, upright and nonreversed real image. The apparatus and method is convenient to operate and with the objects to be projected accessible to the operator but without the irritation of stray light glares affecting the operator's eyesight. The apparatus and method is also capable of projecting high quality images without resorting to the inclusion of complicated optics.
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