JPH0423257Y2 - - Google Patents
Info
- Publication number
- JPH0423257Y2 JPH0423257Y2 JP12430987U JP12430987U JPH0423257Y2 JP H0423257 Y2 JPH0423257 Y2 JP H0423257Y2 JP 12430987 U JP12430987 U JP 12430987U JP 12430987 U JP12430987 U JP 12430987U JP H0423257 Y2 JPH0423257 Y2 JP H0423257Y2
- Authority
- JP
- Japan
- Prior art keywords
- fresnel lens
- cathode ray
- ray tube
- optical axis
- lens
- 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 15
- 230000000694 effects Effects 0.000 description 6
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12430987U JPH0423257Y2 (enrdf_load_stackoverflow) | 1987-08-14 | 1987-08-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12430987U JPH0423257Y2 (enrdf_load_stackoverflow) | 1987-08-14 | 1987-08-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6430586U JPS6430586U (enrdf_load_stackoverflow) | 1989-02-23 |
| JPH0423257Y2 true JPH0423257Y2 (enrdf_load_stackoverflow) | 1992-05-29 |
Family
ID=31373929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12430987U Expired JPH0423257Y2 (enrdf_load_stackoverflow) | 1987-08-14 | 1987-08-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0423257Y2 (enrdf_load_stackoverflow) |
-
1987
- 1987-08-14 JP JP12430987U patent/JPH0423257Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6430586U (enrdf_load_stackoverflow) | 1989-02-23 |
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