JPH0435841Y2 - - Google Patents
Info
- Publication number
- JPH0435841Y2 JPH0435841Y2 JP1985005985U JP598585U JPH0435841Y2 JP H0435841 Y2 JPH0435841 Y2 JP H0435841Y2 JP 1985005985 U JP1985005985 U JP 1985005985U JP 598585 U JP598585 U JP 598585U JP H0435841 Y2 JPH0435841 Y2 JP H0435841Y2
- Authority
- JP
- Japan
- Prior art keywords
- chart
- chart board
- main body
- projection
- diffusion
- 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
- 239000011521 glass Substances 0.000 claims description 9
- 239000011022 opal Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 5
- 239000000113 methacrylic resin Substances 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 description 14
- 238000005286 illumination Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985005985U JPH0435841Y2 (US07902200-20110308-C00004.png) | 1985-01-19 | 1985-01-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985005985U JPH0435841Y2 (US07902200-20110308-C00004.png) | 1985-01-19 | 1985-01-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61124013U JPS61124013U (US07902200-20110308-C00004.png) | 1986-08-05 |
| JPH0435841Y2 true JPH0435841Y2 (US07902200-20110308-C00004.png) | 1992-08-25 |
Family
ID=30483006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985005985U Expired JPH0435841Y2 (US07902200-20110308-C00004.png) | 1985-01-19 | 1985-01-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435841Y2 (US07902200-20110308-C00004.png) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036568A (US07902200-20110308-C00004.png) * | 1973-08-03 | 1975-04-05 | ||
| JPS5788401A (en) * | 1980-11-21 | 1982-06-02 | Nitto Electric Ind Co Ltd | Diffusion plate |
-
1985
- 1985-01-19 JP JP1985005985U patent/JPH0435841Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036568A (US07902200-20110308-C00004.png) * | 1973-08-03 | 1975-04-05 | ||
| JPS5788401A (en) * | 1980-11-21 | 1982-06-02 | Nitto Electric Ind Co Ltd | Diffusion plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61124013U (US07902200-20110308-C00004.png) | 1986-08-05 |
