JPH01177739U - - Google Patents
Info
- Publication number
- JPH01177739U JPH01177739U JP7554688U JP7554688U JPH01177739U JP H01177739 U JPH01177739 U JP H01177739U JP 7554688 U JP7554688 U JP 7554688U JP 7554688 U JP7554688 U JP 7554688U JP H01177739 U JPH01177739 U JP H01177739U
- Authority
- JP
- Japan
- Prior art keywords
- image
- light source
- original image
- optical axis
- respect
- 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
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
第1図は、本考案のオーバーヘツドプロジエク
ター用の拡大投影装置の要部縦断面図であり、第
2図は、第1図の外観斜視図であり、第3図は、
OHPのステージ上に本考案の拡大投影装置を載
置した外観斜視図であり、第4図は、本考案のオ
ーバーヘツドプロジエクター用の拡大投影装置の
他の実施例の要部縦断面図である。
1:OHP本体、2:ステージ、10,10′
:拡大投影装置、12:映像反射板、14:レン
ズ手段、15:原画、16:原画保持手段、18
:光源反射板、19:光源、V12:映像反射板
の垂直線、V14:レンズ手段のレンズ光軸線、
V15:原画の垂直線。
FIG. 1 is a vertical cross-sectional view of a main part of an enlarged projection device for an overhead projector according to the present invention, FIG. 2 is an external perspective view of FIG. 1, and FIG.
FIG. 4 is an external perspective view of the magnifying projection device of the present invention placed on the stage of an OHP, and FIG. be. 1: OHP body, 2: Stage, 10, 10'
: Magnifying projection device, 12: Image reflecting plate, 14: Lens means, 15: Original picture, 16: Original picture holding means, 18
: light source reflecting plate, 19: light source, V 12 : vertical line of image reflecting plate, V 14 : lens optical axis line of lens means,
V 15 : Vertical line of the original picture.
Claims (1)
上に、このステージ面に対して所定角度θだけ傾
けて平面状の映像反射板を配設し、この映像反射
板に拡大映像を結ぶように前記映像反射板の垂直
線に対してこの垂直線の傾き方向にさらに前記所
定角度θだけレンズ光軸線を傾けてレンズ手段を
配設し、前記レンズ光軸線上で前記映像反射板と
反対側に前記レンズ光軸線に対してこのレンズ光
軸線の傾き方向にさらに前記映像反射板に拡大映
像を結ばせるのに見合つた角度だけ原画の垂直線
を傾けて前記原画を保持する原画保持手段を配設
し、さらに前記原画を前記レンズ手段の反対側か
ら照射する照射手段を配設したことを特徴とする
オーバーヘツドプロジエクター用の拡大投影装置
。 (2) 前記照射手段が、前記ステージ面の光を1
枚以上の光源反射板で集光および反射させて前記
原画を裏から照射するように構成したことを特徴
とする請求項1記載のオーバーヘツドプロジエク
ター用の拡大投影装置。 (3) 前記照射手段が、前記ステージ面を照射す
る光源と別の光源であり、この光源で前記原画を
裏から直接的に照射するように構成したことを特
徴とする請求項1記載のオーバーヘツドプロジエ
クター用の拡大投影装置。[Claims for Utility Model Registration] (1) A flat image reflecting plate is arranged on the stage of an overhead projector and is tilted at a predetermined angle θ with respect to the stage surface, and an enlarged image is displayed on this image reflecting plate. The lens means is arranged so that the lens optical axis line is further inclined by the predetermined angle θ in the direction of the inclination of the perpendicular line with respect to the vertical line of the image reflection plate, and the image reflection plate and an original image holder for holding the original image by tilting a vertical line of the original image by an angle suitable for connecting the enlarged image to the image reflection plate in the direction of inclination of the lens optical axis line with respect to the lens optical axis line on the opposite side. 1. A magnifying projection apparatus for an overhead projector, further comprising: means for irradiating the original image from the opposite side of the lens means. (2) The irradiation means irradiates the stage surface with 1
2. The enlarged projection apparatus for an overhead projector according to claim 1, wherein said original image is illuminated from behind by condensing and reflecting light with at least one light source reflecting plate. (3) The overlay according to claim 1, wherein the irradiation means is a light source different from the light source that irradiates the stage surface, and is configured to directly irradiate the original picture from the back side with this light source. Magnifying projection device for head projector.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988075546U JPH0521071Y2 (en) | 1988-06-07 | 1988-06-07 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988075546U JPH0521071Y2 (en) | 1988-06-07 | 1988-06-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01177739U true JPH01177739U (en) | 1989-12-19 |
JPH0521071Y2 JPH0521071Y2 (en) | 1993-05-31 |
Family
ID=31300609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988075546U Expired - Lifetime JPH0521071Y2 (en) | 1988-06-07 | 1988-06-07 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0521071Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5938434U (en) * | 1982-09-03 | 1984-03-10 | 株式会社学習研究社 | Slide projection device for overhead projector |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5938434B2 (en) * | 1978-02-23 | 1984-09-17 | ヤマハ発動機株式会社 | Power generator for ignition timing control in non-contact ignition system |
-
1988
- 1988-06-07 JP JP1988075546U patent/JPH0521071Y2/ja not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5938434U (en) * | 1982-09-03 | 1984-03-10 | 株式会社学習研究社 | Slide projection device for overhead projector |
Also Published As
Publication number | Publication date |
---|---|
JPH0521071Y2 (en) | 1993-05-31 |
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