专利名称：APPARATUS FOR POSITIONING TEST MARK IN SPHERICAL SIGHT METER 发明人：MANFUREETO RUUDOIHI
申请号：JP20380281
申请日：19811218
门槛记>远程监控安防公开号：JPS6148368B2 公开日：
19861023
摘要：The invention relates to an arrangement for test mark positioning in spheric perimeters particularly for use in ophthalmological examinations. A semi-spherical perimeter screen has a central portion upon which a fixed mark is projected by a double projector the back-projection of which is indicated upon a visual field chart which permits recording of said back-projected fixed mark. A further projector connected to the displaceable visual field chart carrier produces discrete test marks via light cables around the central portion of said screen. Thus it is feasible to continuously detect the visual field of a patient's eye by cooperation between the patient's eye, the fixed mark and the discrete marks and by respective displacements of the projectors and hence the marks involved.
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申请人：ZEISS JENA VEB CARL
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