JPH0140481Y2 - - Google Patents
Info
- Publication number
- JPH0140481Y2 JPH0140481Y2 JP12166186U JP12166186U JPH0140481Y2 JP H0140481 Y2 JPH0140481 Y2 JP H0140481Y2 JP 12166186 U JP12166186 U JP 12166186U JP 12166186 U JP12166186 U JP 12166186U JP H0140481 Y2 JPH0140481 Y2 JP H0140481Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical path
- half mirror
- mirror
- optotype
- viewing window
- 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
- 230000003287 optical effect Effects 0.000 claims description 46
- 238000012360 testing method Methods 0.000 claims description 21
- 230000004304 visual acuity Effects 0.000 claims description 17
- 239000011521 glass Substances 0.000 description 6
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 239000005338 frosted glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000144985 peep Species 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12166186U JPH0140481Y2 (en]) | 1986-08-09 | 1986-08-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12166186U JPH0140481Y2 (en]) | 1986-08-09 | 1986-08-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6329507U JPS6329507U (en]) | 1988-02-26 |
| JPH0140481Y2 true JPH0140481Y2 (en]) | 1989-12-04 |
Family
ID=31011142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12166186U Expired JPH0140481Y2 (en]) | 1986-08-09 | 1986-08-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0140481Y2 (en]) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0341656Y2 (en]) * | 1986-03-31 | 1991-09-02 | ||
| JP2793783B2 (ja) * | 1995-03-27 | 1998-09-03 | 株式会社トプコン | 視力検査装置 |
| JP2004535881A (ja) * | 2001-07-27 | 2004-12-02 | トレイシィ テクノロジーズ、エルエルシー | 人の眼の屈折特性の測定 |
-
1986
- 1986-08-09 JP JP12166186U patent/JPH0140481Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6329507U (en]) | 1988-02-26 |
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