JPS61124013U - - Google Patents
Info
- Publication number
- JPS61124013U JPS61124013U JP598585U JP598585U JPS61124013U JP S61124013 U JPS61124013 U JP S61124013U JP 598585 U JP598585 U JP 598585U JP 598585 U JP598585 U JP 598585U JP S61124013 U JPS61124013 U JP S61124013U
- Authority
- JP
- Japan
- Prior art keywords
- chart board
- projection
- chart
- diffusive substance
- diffusive
- 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.)
- Granted
Links
- 239000000126 substance Substances 0.000 claims 4
- 239000011521 glass Substances 0.000 claims 1
- 239000000113 methacrylic resin Substances 0.000 claims 1
- 239000011022 opal Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 1
Description
第１図は本考案に係るチヤート板の側面図、第
２図は本考案に係るチヤート板の作用原理を示す
部分拡大図、第３図は拡散面とチヤート面間の距
離と照明効率との関係を示すグラフ図、第４図は
従来技術の構成を示す説明図である。
７……投影用チヤート板、８……チヤート板本
体、９……チヤート面、１０……拡散面、ｄ……
板厚。
Figure 1 is a side view of the chart board according to the present invention, Figure 2 is a partially enlarged view showing the principle of operation of the chart board according to the present invention, and Figure 3 is the relationship between the distance between the diffusion surface and the chart surface and the illumination efficiency. A graph diagram showing the relationship, and FIG. 4 is an explanatory diagram showing the configuration of the prior art. 7... Chart board for projection, 8... Chart board main body, 9... Chart surface, 10... Diffusion surface, d...
Plate thickness.
Claims (1)
前記チヤート板本体の一面側を投影用チヤート面
に形成して構成したことを特徴とする投影用チヤ
ート板。 (2) 前記拡散性物質はオパールガラスである実
用新案登録請求の範囲第１項記載の投影用チヤー
ト板。 (3) 前記拡散性物質はメタクリル樹脂である実
用新案登録請求の範囲第１項記載の投影用チヤー
ト板。 (4) 前記拡散性物質よりなるチヤート板本体は
、可能な範囲内で極力薄い板厚に形設されている
実用新案登録請求の範囲第１項、第２項又は第３
項記載の投影用チヤート板。[Scope of claims for utility model registration] (1) The chart board body is made of a diffusive substance,
A projection chart board, characterized in that one side of the chart board main body is formed as a projection chart surface. (2) The projection chart board according to claim 1, wherein the diffusive substance is opal glass. (3) The projection chart board according to claim 1, wherein the diffusive substance is a methacrylic resin. (4) The chart board body made of the diffusive substance is formed to have the thinnest possible thickness.
Chart board for projection as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985005985U JPH0435841Y2 (en) | 1985-01-19 | 1985-01-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985005985U JPH0435841Y2 (en) | 1985-01-19 | 1985-01-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61124013U true JPS61124013U (en) | 1986-08-05 |
| JPH0435841Y2 JPH0435841Y2 (en) | 1992-08-25 |
Family
ID=30483006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985005985U Expired JPH0435841Y2 (en) | 1985-01-19 | 1985-01-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435841Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036568A (en) * | 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 (en) * | 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 |
|---|---|
| JPH0435841Y2 (en) | 1992-08-25 |