JPS6268118U - - Google Patents
Info
- Publication number
- JPS6268118U JPS6268118U JP9722986U JP9722986U JPS6268118U JP S6268118 U JPS6268118 U JP S6268118U JP 9722986 U JP9722986 U JP 9722986U JP 9722986 U JP9722986 U JP 9722986U JP S6268118 U JPS6268118 U JP S6268118U
- Authority
- JP
- Japan
- Prior art keywords
- curvature
- center
- meniscus lens
- convex surface
- mirror surface
- 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
- 230000005499 meniscus Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
Landscapes
- Transforming Electric Information Into Light Information (AREA)
Description
第１図は従来の投写形画像表示装置の構成を示
す一部破断側面図、第２図は本考案を実施した画
像表示装置の構成を示す一部破断側面図、第３図
は同装置の光学系を示す側断面図である。
１…電子銃、３…ターゲツト電極、４…蛍光体
膜、５…凹面鏡、７…シユミツトレンズ、１０…
メニスカスレンズ。
FIG. 1 is a partially cutaway side view showing the structure of a conventional projection image display device, FIG. 2 is a partially cutaway side view showing the structure of an image display device embodying the present invention, and FIG. 3 is a partially cutaway side view showing the structure of a conventional projection image display device. FIG. 3 is a side sectional view showing the optical system. DESCRIPTION OF SYMBOLS 1... Electron gun, 3... Target electrode, 4... Fluorescent film, 5... Concave mirror, 7... Schmitt lens, 10...
meniscus lens.
Claims (1)
膜上に映出されたテレビジヨン画像を凹面鏡鏡面
で反射させたのち、変曲点曲面を有するシユミツ
トレンズおよびメニスカスレンズを通じて投写ス
クリーン上に導く光学系において、前記メニスカ
スレンズは、前記凹面鏡鏡面の曲率中心から同鏡
面の曲率半径の３％以内相当距離の点に外側凸面
の曲率中心を置き、かつ前記メニスカスレンズの
内側凹面の曲率中心が前記外側凸面の曲率中心よ
りも前記投写スクリーンの側へ偏倚していること
を特徴とする投写形画像表示装置。 The television image projected on the phosphor film attached to the spherical convex surface of the target electrode is reflected by a concave mirror surface, and then guided onto the projection screen through a Schmidt lens and a meniscus lens having curved surfaces at inflection points. In the optical system, the meniscus lens has the center of curvature of the outer convex surface at a point within 3% of the radius of curvature of the mirror surface from the center of curvature of the concave mirror surface, and the center of curvature of the inner concave surface of the meniscus lens A projection type image display device, characterized in that the center of curvature of the outer convex surface is offset toward the projection screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9722986U JPS6268118U (en) | 1986-06-25 | 1986-06-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9722986U JPS6268118U (en) | 1986-06-25 | 1986-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6268118U true JPS6268118U (en) | 1987-04-28 |
Family
ID=30963971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9722986U Pending JPS6268118U (en) | 1986-06-25 | 1986-06-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6268118U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5465048A (en) * | 1977-11-02 | 1979-05-25 | Minolta Camera Co Ltd | Reflection type optical system of television projector |
-
1986
- 1986-06-25 JP JP9722986U patent/JPS6268118U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5465048A (en) * | 1977-11-02 | 1979-05-25 | Minolta Camera Co Ltd | Reflection type optical system of television projector |
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