JPH0157732U - - Google Patents
Info
- Publication number
- JPH0157732U JPH0157732U JP1988085142U JP8514288U JPH0157732U JP H0157732 U JPH0157732 U JP H0157732U JP 1988085142 U JP1988085142 U JP 1988085142U JP 8514288 U JP8514288 U JP 8514288U JP H0157732 U JPH0157732 U JP H0157732U
- Authority
- JP
- Japan
- Prior art keywords
- screen
- screen member
- light source
- source side
- arched shape
- 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
- 230000003287 optical effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はリヤープロジエクタの原理を示す説明
図。第２図は第１図のリヤースクリーンの一例を
示す側面図。第３図は従来のリヤースクリーンの
一状態を示す説明図。第４図、第５図、第６図は
本考案のリヤースクリーンの一実施例を示す側面
図。
３……リヤースクリーン、５，６，７……スク
リーン部材、８……装着部。
FIG. 1 is an explanatory diagram showing the principle of a rear projector. FIG. 2 is a side view showing an example of the rear screen shown in FIG. 1. FIG. 3 is an explanatory diagram showing one state of a conventional rear screen. FIG. 4, FIG. 5, and FIG. 6 are side views showing one embodiment of the rear screen of the present invention. 3... Rear screen, 5, 6, 7... Screen member, 8... Mounting part.
Claims (1)
形成された第１のスクリーン部材が光源側に配置
され；少なくとも一方の面にレンチキユラーレン
ズ面が形成された第２のスクリーン部材が観察者
側に配置され；映像源からの光学像を拡大投写す
るリヤースクリーンにおいて、 前記第２のスクリーン部材は前記第１のスクリ
ーン部材よりも厚みが薄く、予め光源側に前記第
１のスクリーン部材よりも曲率半径が小さい凸面
を有するように弓なりに反つた形状を有し； 前記第１、第２のスクリーン部材の周辺部を相
互に密着固定してなるリヤースクリーン。 (2) 前記第１のスクリーン部材は予め光源側に
凸面を有するように弓なりに反つた形状を有する
事を特徴とする実用新案登録請求の範囲第１項に
記載のリヤースクリーン。[Claims for Utility Model Registration] (1) A first screen member having a Fresnel lens surface formed on at least one surface is disposed on the light source side; a first screen member having a lenticular lens surface formed on at least one surface; A second screen member is arranged on the observer side; in the rear screen for enlarging and projecting an optical image from an image source, the second screen member is thinner than the first screen member, and the second screen member is arranged in advance on the light source side. A rear screen having an arched shape having a convex surface having a smaller radius of curvature than that of the first screen member; and a rear screen formed by closely fixing the peripheral portions of the first and second screen members to each other. (2) The rear screen according to claim 1, wherein the first screen member has an arched shape so as to have a convex surface on the light source side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988085142U JPH0157732U (en) | 1988-06-29 | 1988-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988085142U JPH0157732U (en) | 1988-06-29 | 1988-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0157732U true JPH0157732U (en) | 1989-04-11 |
Family
ID=31309818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988085142U Pending JPH0157732U (en) | 1988-06-29 | 1988-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0157732U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2500511A (en) * | 1944-07-10 | 1950-03-14 | Reliephographie Soc Pour L Exp | Relief photograph having reflecting back |
-
1988
- 1988-06-29 JP JP1988085142U patent/JPH0157732U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2500511A (en) * | 1944-07-10 | 1950-03-14 | Reliephographie Soc Pour L Exp | Relief photograph having reflecting back |
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