发明名称 Optometric apparatus
摘要 An optometric apparatus for subjectively examining visual functions of an eye (PE) of an examinee is disclosed. This apparatus includes: a disposing unit ( 2 ) for disposing an optical element ( 4 ) in front of the examinee's eye; a cornea position alignment optical system ( 20 ) for checking a vertex distance between a back surface of the disposed optical element and a corneal vertex of the examinee's eye; wherein the alignment optical system includes an aligning scale plate ( 23 ) provided with a scale (S 1 -S 5 ) for checking the vertex distance, a reticle plate ( 24 ) provided with a reticle ( 24 a) and placed in a different place from the aligning scale plate, and a first reference mark ( 30 ) and a second reference mark ( 31 ) for positioning an eye (OE) of an examiner in a point at a predetermined distance from the reticle plate, the first and second reference marks being provided in different places and appearing, to the examiner's eye, to have a predetermined positional relation with each other when the examiner's eye is positioned in the point at the predetermined distance from the reticle plate.
申请公布号 US7073907(B2) 申请公布日期 2006.07.11
申请号 US20040763437 申请日期 2004.01.26
申请人 NIDEK CO., LTD. 发明人 HOSOI YOSHINOBU
分类号 A61B3/14;A61B3/028;A61B3/103 主分类号 A61B3/14
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