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专利名称：Alignment technique for a photographic
enlarger
发明人：William R. Ziegler申请号：US07/751726申请日：19910829公开号：US05239339A公开日：19930824
摘要：An alignment arrangement for photographic recording apparatus having a lensplane, an object plane, and an image plane. The alignment arrangement comprises analignment module including a mirror, and luminous indicia disposed in a plane parallel tothe mirror's reflective surface. The alignment module may be mounted on the apparatusso that the mirror's reflective surface lies parallel to one of the planes of the apparatus.A second mirror may be placed in another plane of the apparatus so that its reflectivesurface is parallel to that plane. The alignment module includes a viewing system whichallows the two mirrors to be simultaneously viewed. Multiple images of the indicia,created by the two mirrors, may be observed. The images assume only one of manydifferent patterns when the reflective surfaces of the two mirrors are parallel.
申请人：ZIEGLER; WILLIAM R.
代理机构：Heller, Ehrman, White & McAuliffe
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