JPS6013105U - Projection pattern for photokeratometer - Google Patents
Projection pattern for photokeratometerInfo
- Publication number
- JPS6013105U JPS6013105U JP10503383U JP10503383U JPS6013105U JP S6013105 U JPS6013105 U JP S6013105U JP 10503383 U JP10503383 U JP 10503383U JP 10503383 U JP10503383 U JP 10503383U JP S6013105 U JPS6013105 U JP S6013105U
- Authority
- JP
- Japan
- Prior art keywords
- projection pattern
- photokeratometer
- slit
- circumferential
- radial
- 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
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
第１図は本考案の投影パターンの一実施例の概略図、第
２〜４図はそれぞれ本考案における円周方向のスリット
と半径方向のスリットの交点付近における配置の実施例
の概略図、第５図は第１図に示す投影パターンを用いて
測定したときの円錐角膜の影像パタニンの概略図、第６
図はフォトケラトメータの光学系の概略説明図、第７図
は従来′の同心円状の投影パターンの概略図、第８図は
第７図に示す投影パターンを用いて測定したときの円錐
角膜の影像パターンの概略図である。
（図面の主要符号）、１：本考案の投影パターン、３：
１円周方向のスリット、５：半径方向のスリット、６：
開口、３０：投影パターン板、３２：角膜、３８：フィ
ルム、Ｐ：光源。FIG. 1 is a schematic diagram of an embodiment of the projection pattern of the present invention, and FIGS. Figure 5 is a schematic diagram of the image pattern of keratoconus measured using the projection pattern shown in Figure 1;
The figure is a schematic diagram of the optical system of a photokeratometer, Figure 7 is a schematic diagram of a conventional concentric projection pattern, and Figure 8 is a diagram of keratoconus measured using the projection pattern shown in Figure 7. FIG. 3 is a schematic diagram of an image pattern. (Main symbols in the drawing), 1: Projection pattern of the present invention, 3:
1: Circumferential slit, 5: Radial slit, 6:
Aperture, 30: projection pattern plate, 32: cornea, 38: film, P: light source.
Claims (1)
る半径方向のスリットを有するフォトケラトメータ用投
影パターン。 ２ 半径方向のスリットを少なくとも２本有し、円周方
向のスリットを少なくとも５本同心円状に有する実用新
案登録請求の範囲第１項記載の投影パターン。[Claims for Utility Model Registration] 1. A projection pattern for a photokeratometer having a circumferential slit and a radial slit that intersects the circumferential slit. 2. The projection pattern according to claim 1, which has at least two radial slits and at least five circumferential slits arranged concentrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10503383U JPS6013105U (en) | 1983-07-05 | 1983-07-05 | Projection pattern for photokeratometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10503383U JPS6013105U (en) | 1983-07-05 | 1983-07-05 | Projection pattern for photokeratometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6013105U true JPS6013105U (en) | 1985-01-29 |
| JPH0445684Y2 JPH0445684Y2 (en) | 1992-10-27 |
Family
ID=30246374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10503383U Granted JPS6013105U (en) | 1983-07-05 | 1983-07-05 | Projection pattern for photokeratometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6013105U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5367289A (en) * | 1976-09-25 | 1978-06-15 | Zeiss Stiftung | Device for measuring human eye*s corneal astigmatism |
| JPS5982829A (en) * | 1982-11-05 | 1984-05-14 | モスコフスキイ・ナウチノ−イススレドワテルスキイ・インスチチユ−ト・グラズニク・ボレズネイ・イ−メニ・ゲルムゴルツア | Method and apparatus for determining surface configuration of cornea |
-
1983
- 1983-07-05 JP JP10503383U patent/JPS6013105U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5367289A (en) * | 1976-09-25 | 1978-06-15 | Zeiss Stiftung | Device for measuring human eye*s corneal astigmatism |
| JPS5982829A (en) * | 1982-11-05 | 1984-05-14 | モスコフスキイ・ナウチノ−イススレドワテルスキイ・インスチチユ−ト・グラズニク・ボレズネイ・イ−メニ・ゲルムゴルツア | Method and apparatus for determining surface configuration of cornea |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0445684Y2 (en) | 1992-10-27 |
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