JPH0325165B2 - - Google Patents
Info
- Publication number
- JPH0325165B2 JPH0325165B2 JP2091829A JP9182990A JPH0325165B2 JP H0325165 B2 JPH0325165 B2 JP H0325165B2 JP 2091829 A JP2091829 A JP 2091829A JP 9182990 A JP9182990 A JP 9182990A JP H0325165 B2 JPH0325165 B2 JP H0325165B2
- Authority
- JP
- Japan
- Prior art keywords
- straight line
- measuring device
- linear
- parallel
- detection
- 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.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 80
- 238000001514 detection method Methods 0.000 claims description 76
- 238000005259 measurement Methods 0.000 claims description 57
- 230000004907 flux Effects 0.000 claims description 12
- 238000005286 illumination Methods 0.000 claims description 11
- 230000000873 masking effect Effects 0.000 claims description 3
- 210000004087 cornea Anatomy 0.000 description 56
- 239000011295 pitch Substances 0.000 description 39
- 238000010586 diagram Methods 0.000 description 25
- 238000000034 method Methods 0.000 description 12
- 238000012545 processing Methods 0.000 description 11
- 210000001508 eye Anatomy 0.000 description 10
- 238000003384 imaging method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 210000005252 bulbus oculi Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Eye Examination Apparatus (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2091829A JPH0315435A (ja) | 1990-04-06 | 1990-04-06 | 曲率測定装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2091829A JPH0315435A (ja) | 1990-04-06 | 1990-04-06 | 曲率測定装置 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56173529A Division JPS5875531A (ja) | 1981-10-28 | 1981-10-28 | 曲率測定装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0315435A JPH0315435A (ja) | 1991-01-23 |
| JPH0325165B2 true JPH0325165B2 (zh) | 1991-04-05 |
Family
ID=14037495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2091829A Granted JPH0315435A (ja) | 1990-04-06 | 1990-04-06 | 曲率測定装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0315435A (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4713862B2 (ja) * | 2004-08-23 | 2011-06-29 | 株式会社東芝 | 超音波診断装置 |
-
1990
- 1990-04-06 JP JP2091829A patent/JPH0315435A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0315435A (ja) | 1991-01-23 |
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