JPS6121045Y2 - - Google Patents
Info
- Publication number
- JPS6121045Y2 JPS6121045Y2 JP6806580U JP6806580U JPS6121045Y2 JP S6121045 Y2 JPS6121045 Y2 JP S6121045Y2 JP 6806580 U JP6806580 U JP 6806580U JP 6806580 U JP6806580 U JP 6806580U JP S6121045 Y2 JPS6121045 Y2 JP S6121045Y2
- Authority
- JP
- Japan
- Prior art keywords
- chart
- visual acuity
- projector
- charts
- light source
- 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
Links
- 230000004304 visual acuity Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 1
- 239000011521 glass Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6806580U JPS6121045Y2 (no) | 1980-05-17 | 1980-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6806580U JPS6121045Y2 (no) | 1980-05-17 | 1980-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56168106U JPS56168106U (no) | 1981-12-12 |
| JPS6121045Y2 true JPS6121045Y2 (no) | 1986-06-24 |
Family
ID=29662035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6806580U Expired JPS6121045Y2 (no) | 1980-05-17 | 1980-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6121045Y2 (no) |
-
1980
- 1980-05-17 JP JP6806580U patent/JPS6121045Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56168106U (no) | 1981-12-12 |
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