JPS50125755A - - Google Patents
Info
- Publication number
- JPS50125755A JPS50125755A JP49031154A JP3115474A JPS50125755A JP S50125755 A JPS50125755 A JP S50125755A JP 49031154 A JP49031154 A JP 49031154A JP 3115474 A JP3115474 A JP 3115474A JP S50125755 A JPS50125755 A JP S50125755A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49031154A JPS50125755A (de) | 1974-03-19 | 1974-03-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49031154A JPS50125755A (de) | 1974-03-19 | 1974-03-19 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11908582A Division JPS5828353A (ja) | 1982-07-08 | 1982-07-08 | ノングレア フレネルレンズの製法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS50125755A true JPS50125755A (de) | 1975-10-03 |
Family
ID=12323513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49031154A Pending JPS50125755A (de) | 1974-03-19 | 1974-03-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS50125755A (de) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52145238A (en) * | 1976-05-28 | 1977-12-03 | Ichirou Hosaka | Method of making mold for fresnel lens |
| JPS56142501A (en) * | 1980-04-08 | 1981-11-06 | Matsushita Electric Ind Co Ltd | Fresnel lens sheet |
| JPS61130903A (ja) * | 1984-11-30 | 1986-06-18 | Hitachi Ltd | フレネルレンズとその製造方法 |
| JPH01155303A (ja) * | 1987-12-14 | 1989-06-19 | Ichikoh Ind Ltd | ガラス製フレネル形プリズムレンズ、及び同製造方法 |
| JP2011079696A (ja) * | 2009-10-06 | 2011-04-21 | Central Glass Co Ltd | フレネルレンズ用ガラス |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3784282A (en) * | 1971-03-05 | 1974-01-08 | Hitachi Ltd | Correcting lens used to form fluorescent screens of colour television receiving tubes |
| US3784284A (en) * | 1970-07-25 | 1974-01-08 | Nippon Kogaku Kk | Zoom lens system for close up photography |
-
1974
- 1974-03-19 JP JP49031154A patent/JPS50125755A/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3784284A (en) * | 1970-07-25 | 1974-01-08 | Nippon Kogaku Kk | Zoom lens system for close up photography |
| US3784282A (en) * | 1971-03-05 | 1974-01-08 | Hitachi Ltd | Correcting lens used to form fluorescent screens of colour television receiving tubes |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52145238A (en) * | 1976-05-28 | 1977-12-03 | Ichirou Hosaka | Method of making mold for fresnel lens |
| JPS56142501A (en) * | 1980-04-08 | 1981-11-06 | Matsushita Electric Ind Co Ltd | Fresnel lens sheet |
| JPS626201B2 (de) * | 1980-04-08 | 1987-02-09 | Matsushita Electric Ind Co Ltd | |
| JPS61130903A (ja) * | 1984-11-30 | 1986-06-18 | Hitachi Ltd | フレネルレンズとその製造方法 |
| JPH0525081B2 (de) * | 1984-11-30 | 1993-04-09 | Hitachi Ltd | |
| JPH01155303A (ja) * | 1987-12-14 | 1989-06-19 | Ichikoh Ind Ltd | ガラス製フレネル形プリズムレンズ、及び同製造方法 |
| JP2011079696A (ja) * | 2009-10-06 | 2011-04-21 | Central Glass Co Ltd | フレネルレンズ用ガラス |