JPH0244730U - - Google Patents
Info
- Publication number
- JPH0244730U JPH0244730U JP1988124311U JP12431188U JPH0244730U JP H0244730 U JPH0244730 U JP H0244730U JP 1988124311 U JP1988124311 U JP 1988124311U JP 12431188 U JP12431188 U JP 12431188U JP H0244730 U JPH0244730 U JP H0244730U
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- diameter
- sheets
- connecting hole
- light source
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 2
- 230000008602 contraction Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
第１図は、本考案による透過形スクリーンの要
旨を示した図である。第２図は、本考案による透
過形スクリーンの実施例を示した図である。第３
図は、従来の透過形スクリーンの連結構造を示し
た図である。
１〜３…シート、Ｃ…有頭連結具。
FIG. 1 is a diagram showing the gist of the transmission type screen according to the present invention. FIG. 2 is a diagram showing an embodiment of a transmission type screen according to the present invention. Third
The figure shows a conventional connection structure of transparent screens. 1 to 3... Sheet, C... Headed connector.
Claims (1)
トを重ね合わせ、少なくとも片側に頭部を持つ有
頭連結具を、それらのシートを貫通する連結孔に
挿入して連結する透過形スクリーンであつて、前
記各シートを貫通する連結孔の径は、観察側のシ
ートが最も小さく、次いで、光源側のシートから
観察側のシートに向かつて、次第に大きくなるよ
うに構成した透過形スクリーン。 (2) 光源側から観察側に、厚さがｔ１〜ｔｎの
ｎ枚のシートを順次重ね合わせて、軸径がａで両
端のシートとの重なりがｈになるような頭部をも
つ有頭連結具を、前記各シートに穿設された連結
孔に通して連結した場合に、光源側のシートの連
結孔の径ｘ１，ｉ番目のシートの連結孔の径Ｘｉ
、観察側のシートの連結孔の径ｘｎ、光源側の有
頭連結具の頭部径ｙ１、観察側の有頭連結具の頭
部径ｙｎが下記の式で表されるように構成した透
過形スクリーン。 記 ｘ１≦ａ＋２ΔＬ・ｔ１／Σｔｎ−１ ｘｉ≦ａ＋２ΔＬ・Σｔｉ／Σｔｎ−１ ｘｎ≦ａ＋ΔＬ・ｔｎ／Σｔｎ−１ ｙ１≦ａａ＋２・２ΔＬ・ｔ１／Σｔｎ−１＋
２ｈ ｙｎ≦ａ＋２ΔＬ・ｔｎ／Σｔｎ−１＋２ｈ 但し、ΔＬ；観察側シートの伸縮量[Claims for Utility Model Registration] (1) At least three sheets having different optical properties are stacked one on top of the other, and a headed connector having a head on at least one side is inserted into a connecting hole penetrating the sheets. The connected transmission screens are configured such that the diameter of the connecting hole penetrating each sheet is the smallest in the sheet on the observation side, and then gradually increases from the sheet on the light source side to the sheet on the observation side. Transparent screen. (2) From the light source side to the observation side, n sheets with thicknesses t 1 to t n are stacked one on top of the other in order, and the head has a shaft diameter of a and an overlap with the sheets at both ends of h. When the headed connectors are connected through the connecting holes drilled in each of the sheets, the diameter x 1 of the connecting hole in the sheet on the light source side, and the diameter X i of the connecting hole in the i-th sheet.
, the diameter x n of the connecting hole in the sheet on the observation side, the head diameter y 1 of the headed connector on the light source side, and the head diameter y n of the headed connector on the observation side as expressed by the following formula. The constructed transparent screen. Note: x 1 ≦a+2ΔL・t 1 /Σt n−1 x i ≦ a +2ΔL・Σt i /Σt n − 1 1 +
2h y n ≦a+2ΔL・t n /Σt n-1 +2h However, ΔL: Amount of expansion and contraction of the observation side sheet
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988124311U JPH0244730U (en) | 1988-09-22 | 1988-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988124311U JPH0244730U (en) | 1988-09-22 | 1988-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0244730U true JPH0244730U (en) | 1990-03-28 |
Family
ID=31373934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988124311U Pending JPH0244730U (en) | 1988-09-22 | 1988-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06179A (en) * | 1992-06-22 | 1994-01-11 | Aloka Co Ltd | Method and instrument for measuring bone-salt quantity |
-
1988
- 1988-09-22 JP JP1988124311U patent/JPH0244730U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06179A (en) * | 1992-06-22 | 1994-01-11 | Aloka Co Ltd | Method and instrument for measuring bone-salt quantity |
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