JPS5881525U - Low loss rear projection screen - Google Patents
Low loss rear projection screenInfo
- Publication number
- JPS5881525U JPS5881525U JP1981176717U JP17671781U JPS5881525U JP S5881525 U JPS5881525 U JP S5881525U JP 1981176717 U JP1981176717 U JP 1981176717U JP 17671781 U JP17671781 U JP 17671781U JP S5881525 U JPS5881525 U JP S5881525U
- Authority
- JP
- Japan
- Prior art keywords
- light
- rear projection
- projection screen
- transparent plate
- collecting section
- 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
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の低損失背面投写スクリーンの一実施例
及び光路追跡例を示す断面図、第２図は第１図のスクリ
ーン拡大図、第３図は応用例を示すスクリーン斜視図で
ある。 −３は投射光、５はフレネルレン
ズ、７は湾曲し ゛ンズ、８はレンズ中央部、９は乱
反射部。Fig. 1 is a sectional view showing an embodiment of the low-loss rear projection screen of the present invention and an example of optical path tracking, Fig. 2 is an enlarged view of the screen in Fig. 1, and Fig. 3 is a perspective view of the screen showing an example of application. . -3 is the projected light, 5 is the Fresnel lens, 7 is the curved lens, 8 is the central part of the lens, and 9 is the diffused reflection part.
Claims (1)
レンズを多数並設した面を形成し、前述透明板の他面又
は隣接する透明板の１面に各湾曲レンズを通った光が収
束する近傍に対応して、光取束部を設け、かつ、該光取
束部に光路補正用レンズの各屈折面を形成し、さらに前
述光取束部を除いた部分に光路補正用レンズの角の光乱
反射部分を配置した事を特徴とする低損失背面投写スク
リーン。A transparent plate on the light incident side is formed with a surface in which a large number of curved lenses extending in one direction or concentrically are arranged side by side, and the light passing through each curved lens is formed on the other surface of the transparent plate or one surface of an adjacent transparent plate. A light collecting section is provided corresponding to the vicinity of the convergence, and each refractive surface of the optical path correction lens is formed in the light collecting section, and further, an optical path correction lens is provided in a portion other than the light collecting section. A low-loss rear projection screen characterized by a light-diffusing reflective area at the corners of the screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981176717U JPS5881525U (en) | 1981-11-30 | 1981-11-30 | Low loss rear projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981176717U JPS5881525U (en) | 1981-11-30 | 1981-11-30 | Low loss rear projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5881525U true JPS5881525U (en) | 1983-06-02 |
Family
ID=29969927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981176717U Pending JPS5881525U (en) | 1981-11-30 | 1981-11-30 | Low loss rear projection screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5881525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021189418A (en) * | 2020-06-04 | 2021-12-13 | 浙江▲稜▼▲鏡▼全息科技有限公司 | Air imaging apparatus for automobile and on-vehicle human-machine interface assistance system |
-
1981
- 1981-11-30 JP JP1981176717U patent/JPS5881525U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021189418A (en) * | 2020-06-04 | 2021-12-13 | 浙江▲稜▼▲鏡▼全息科技有限公司 | Air imaging apparatus for automobile and on-vehicle human-machine interface assistance system |
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