JPH01177739U

JPH01177739U -

Info

Publication number: JPH01177739U
Application number: JP7554688U
Authority: JP
Priority date: 1988-06-07
Filing date: 1988-06-07
Publication date: 1989-12-19
Anticipated expiration: 2003-05-31
Also published as: JPH0521071Y2

Description

[Brief explanation of the drawing]

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、Ｖ_１２：映像反射板
の垂直線、Ｖ_１４：レンズ手段のレンズ光軸線、
Ｖ_１５：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

[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.