JPH02130603U - - Google Patents
Info
- Publication number
- JPH02130603U JPH02130603U JP3756589U JP3756589U JPH02130603U JP H02130603 U JPH02130603 U JP H02130603U JP 3756589 U JP3756589 U JP 3756589U JP 3756589 U JP3756589 U JP 3756589U JP H02130603 U JPH02130603 U JP H02130603U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- optotype
- refractive power
- measurement
- representative value
- 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
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案に関わる眼屈折力測定装置の光
学系基本配置図、第２図及び第３図は視標光学系
の他の実施例を示す光学配置図、第４図は電気系
基本ブロツク図、第５図はフローチヤート図であ
る。５図は実施例のフローチヤートである。
１……測定用光源、４……スポツト絞り、５，
６……対物レンズ、８……被検眼、１３……角膜
反射除去マスク、１４……移動レンズ、１６……
受光素子、１７……第１リレーレンズ、１８，１
９……円柱レンズ、２１……視標。
Figure 1 is a basic layout diagram of the optical system of the eye refractive power measuring device related to the present invention, Figures 2 and 3 are optical layout diagrams showing other embodiments of the target optical system, and Figure 4 is the basic electrical system. The block diagram and FIG. 5 are flowcharts. FIG. 5 is a flowchart of the embodiment. 1...Light source for measurement, 4...Spot aperture, 5,
6... Objective lens, 8... Eye to be examined, 13... Corneal reflection removal mask, 14... Moving lens, 16...
Light receiving element, 17...first relay lens, 18,1
9...Cylindrical lens, 21...Optotype.
Claims (1)
折力測定装置装置において、 自覚測定用の視標を呈示する自覚測定用視標呈
示手段と、 視標光学系中に配置された回転又は回転及び移
動可能な複数個の円柱レンズと、 視標光学系中に配置された球面度数を変えるこ
とのできる光学系と、 測定した各他覚測定値を記憶する手段と、 該他覚測定値から代表値を算出する代表値算出
手段と、 前記視標光学系を自動的に該代表値に相当する
矯正状態に設定する視標光学系移動手段と、 を有することを特徴とする眼屈折力測定装置。 (2) 第１項の代表値算出手段は測定回数設定手
段と他覚測定値が該測定回数設定手段により設定
された回数に達したときは予め定められた算出方
法により代表的な値を算出する算出手段とからな
ることを特徴とする眼屈折力測定装置。 (3) 第１項の球面度数を変えることのできる光
学系は前記視標光学系中に配置された移動可能な
球面レンズ又は光軸方向に移動可能な前記自覚測
定用視標であることを特徴とする眼屈折力測定装
置。 (4) 第１項の眼屈折力測定装置の視標光学系移
動手段は矯正状態と非矯正状態とに切換可能な切
換手段を有することを特徴とする眼屈折力測定装
置。[Scope of Claim for Utility Model Registration] (1) In an eye refractive power measurement device that objectively and automatically measures the refractive power of the eye, an optotype presentation means for subjective measurement that presents an optotype for subjective measurement; A plurality of rotatable or rotatable and movable cylindrical lenses arranged in the optotype optical system, an optical system capable of changing the spherical power arranged in the optotype optical system, and each measured objective measurement value. representative value calculation means for calculating a representative value from the objective measurement value; and optotype optical system moving means for automatically setting the optotype optical system to a corrected state corresponding to the representative value. An eye refractive power measuring device characterized by having the following. (2) The representative value calculation means in paragraph 1 calculates a representative value by a predetermined calculation method when the measurement number setting means and the objective measurement value reach the number of times set by the measurement number setting means. An eye refractive power measuring device characterized by comprising: calculation means for calculating. (3) The optical system capable of changing the spherical power in the first term is a movable spherical lens disposed in the target optical system or the subjective measurement target movable in the optical axis direction. Features of the eye refractive power measuring device. (4) The eye refractive power measuring device according to item 1, wherein the optotype optical system moving means has a switching means capable of switching between a corrected state and a non-corrected state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989037565U JPH0612729Y2 (en) | 1989-03-30 | 1989-03-30 | Optometry device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989037565U JPH0612729Y2 (en) | 1989-03-30 | 1989-03-30 | Optometry device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02130603U true JPH02130603U (en) | 1990-10-29 |
| JPH0612729Y2 JPH0612729Y2 (en) | 1994-04-06 |
Family
ID=31544796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989037565U Expired - Lifetime JPH0612729Y2 (en) | 1989-03-30 | 1989-03-30 | Optometry device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612729Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6092732A (en) * | 1983-10-28 | 1985-05-24 | 株式会社トプコン | Eye refreaction force measuring apparatus |
| JPS6258253A (en) * | 1985-08-08 | 1987-03-13 | Konishiroku Photo Ind Co Ltd | Processing method for photosensitive lithographic plate |
| JPS6351016A (en) * | 1986-08-21 | 1988-03-04 | 三菱電機株式会社 | Gas insulated switch |
-
1989
- 1989-03-30 JP JP1989037565U patent/JPH0612729Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6092732A (en) * | 1983-10-28 | 1985-05-24 | 株式会社トプコン | Eye refreaction force measuring apparatus |
| JPS6258253A (en) * | 1985-08-08 | 1987-03-13 | Konishiroku Photo Ind Co Ltd | Processing method for photosensitive lithographic plate |
| JPS6351016A (en) * | 1986-08-21 | 1988-03-04 | 三菱電機株式会社 | Gas insulated switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0612729Y2 (en) | 1994-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |