JPH0274005U - - Google Patents
Info
- Publication number
- JPH0274005U JPH0274005U JP15523988U JP15523988U JPH0274005U JP H0274005 U JPH0274005 U JP H0274005U JP 15523988 U JP15523988 U JP 15523988U JP 15523988 U JP15523988 U JP 15523988U JP H0274005 U JPH0274005 U JP H0274005U
- Authority
- JP
- Japan
- Prior art keywords
- distance meter
- interpupillary distance
- gaze target
- light source
- eye
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005259 measurement Methods 0.000 claims description 5
- 210000001508 eye Anatomy 0.000 claims 3
- 210000005252 bulbus oculi Anatomy 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000001179 pupillary effect Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 1
Landscapes
- Eye Examination Apparatus (AREA)
Description
第１図、第２図は本実施例に係る瞳孔間距離計
の測定原理を説明する図、第３図は１実施例であ
る瞳孔間距離計の構造図、第４―１図はその外観
正面図、第４―２図はその平面図、第５図はセグ
メント型液晶デイスプレイで構成した測定用マー
クの説明図、第６図は電気系ブロツクダイヤグラ
ムである。
１ａ，１ｂ……照明用光源、４……対物レンズ
、６……セグメント型液晶デイスプレイ、７，８
……瞳孔間測定ノブ、９，１０……リニアポテン
シヨメータ、１３……注視距離設定用ノブ、１４
……回転式ポテンシヨメータ、１５……マイクロ
コンピユータ、２２……片眼遮蔽用スイツチ。
Figures 1 and 2 are diagrams explaining the measurement principle of the pupillary distance meter according to this embodiment, Figure 3 is a structural diagram of the pupillary distance meter according to one embodiment, and Figure 4-1 is its external appearance. 4-2 is a plan view thereof, FIG. 5 is an explanatory diagram of a measurement mark made up of a segment type liquid crystal display, and FIG. 6 is an electrical system block diagram. 1a, 1b... Light source for illumination, 4... Objective lens, 6... Segment type liquid crystal display, 7, 8
...Pupillary measurement knob, 9, 10...Linear potentiometer, 13...Gaze distance setting knob, 14
...Rotary potentiometer, 15...Microcomputer, 22...Single eye shielding switch.
Claims (1)
の角膜反射像と測定用マークとを所定の関係に位
置合わせし、測定用マークの位置を読込むことに
より眼球の光軸間距離を測定する瞳孔間距離計に
おいて、 前記注視標形成手段を左眼用、右眼用とそれぞ
れ別個に配置し、光源を独立に点滅させることに
より片眼遮蔽を行うことを特徴とする瞳孔間距離
計。 (2) 第１項の注視標形成手段は点状視標を背後
から照明することを特徴とする瞳孔間距離計。[Scope of Claim for Utility Model Registration] (1) Aligning the corneal reflection image of a gaze target containing a light source for gazing at the eye to be examined and the measurement mark in a predetermined relationship, and reading the position of the measurement mark. In the interpupillary distance meter that measures the distance between the optical axes of the eyeballs, the gaze target forming means is arranged separately for the left eye and the right eye, respectively, and the light source is blinked independently to perform monocular shielding. An interpupillary distance meter featuring (2) An interpupillary distance meter characterized in that the gaze target forming means of item 1 illuminates a dotted target from behind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15523988U JPH0529681Y2 (en) | 1988-11-29 | 1988-11-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15523988U JPH0529681Y2 (en) | 1988-11-29 | 1988-11-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0274005U true JPH0274005U (en) | 1990-06-06 |
| JPH0529681Y2 JPH0529681Y2 (en) | 1993-07-29 |
Family
ID=31432693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15523988U Expired - Lifetime JPH0529681Y2 (en) | 1988-11-29 | 1988-11-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0529681Y2 (en) |
-
1988
- 1988-11-29 JP JP15523988U patent/JPH0529681Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0529681Y2 (en) | 1993-07-29 |
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