JPS5926603U

JPS5926603U - pupillary distance meter

Info

Publication number: JPS5926603U
Application number: JP12205482U
Authority: JP
Inventors: 康夫加藤; 神山　喜一
Original assignee: 東京光学機械株式会社
Priority date: 1982-08-11
Filing date: 1982-08-11
Publication date: 1984-02-18
Also published as: JPS6238644Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１Ａ図及び第１Ｂ図は従来の瞳孔間距離針の構成と作
用を説明するための光学配置図、第２Ａ図、第２Ｂ図、
第３Ａ図及び第３Ｂ図は本考案の原理を説明するための
光学図、第４図は本考案の第１実施例を示す部分斜視図
、第５図は本考案の第２実施例を示す部分断面図、第６
Ａ図ないし６０図は本考案の第２実施例を示す要部平面
図で　　　。ある。２・・・視度切換手段、３・・・瞳孔間距離計測手段、
２５・・・第１　接眼レンズ、２６・・・第２　接眼レ
ンズ、１１３・・・固視標板、１３１・・・対物レンズ
。1A and 1B are optical layout diagrams for explaining the structure and operation of a conventional interpupillary distance needle; FIGS. 2A and 2B;
Figures 3A and 3B are optical diagrams for explaining the principle of the present invention, Figure 4 is a partial perspective view showing the first embodiment of the invention, and Figure 5 is a second embodiment of the invention. Partial sectional view, No. 6
Figures A to 60 are plan views of main parts showing a second embodiment of the present invention. be. 2... Diopter switching means, 3... Interpupillary distance measuring means,
25... First eyepiece lens, 26... Second eyepiece lens, 113... Fixation target plate, 131... Objective lens.

Claims

[Scope of utility model registration request]

(1) A fixation target for the subject to fixate, an objective lens system for optically changing the gaze distance when the subject fixates the fixation target, and a fixation target for the subject to fixate on. An interpupillary distance needle comprising an eyepiece for observing the pupil through the objective lens, and a measuring means for measuring the distance between the pupils of the subject by aligning an index with the pupil. An interpupillary distance needle characterized in that the observation diopter of the pupil can be changed.

(2) The eyepiece has at least two eyepieces having different pupil observation diopters, and an eyepiece switching means for selectively inserting these two eyepieces into the pupil observation optical path. The interpupillary distance needle according to claim 1, which is a utility model.

(3) Of the two eyepieces, the first eyepiece is an eyepiece that provides the examiner with an observation diopter of approximately diopter when the subject optically views the fixation target at a distance. , a request for registration of a utility model characterized in that the second eyepiece is an eyepiece that provides an observation diopter of approximately diopter to the examiner when the examinee optically near-views the fixation target. The interpupillary distance needle according to item 2.

(4) Utility model registration claim 1, characterized in that the objective lens optically changes the gaze distance at which the subject fixates the fixation target by moving in the direction of its optical axis. The interpupillary distance needle according to any one of Items 1 to 3.