JPS6265643U - - Google Patents
Info
- Publication number
- JPS6265643U JPS6265643U JP15645885U JP15645885U JPS6265643U JP S6265643 U JPS6265643 U JP S6265643U JP 15645885 U JP15645885 U JP 15645885U JP 15645885 U JP15645885 U JP 15645885U JP S6265643 U JPS6265643 U JP S6265643U
- Authority
- JP
- Japan
- Prior art keywords
- original
- dome
- diffuser plate
- image
- photographic projector
- 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
- 238000005286 illumination Methods 0.000 claims 2
- 230000004907 flux Effects 0.000 claims 1
- 238000003384 imaging method Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Projection-Type Copiers In General (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Description
第１図は本考案の光拡散板の１実施例を適用し
た写真投影機のフオトヘツド部を示す概略図、第
２図は他の１実施例を示す図、第３図は従来手段
を示す概略図、第４図Ａは第３図示従来手段によ
る投影面における光量分布を示すグラフ、Ｂは本
考案装置による光量分布を示すグラフである。
１…フオトヘツド、２…光源ランプ、３…原画
、４…反射ボツクス、５…透孔、６…散光板、７
，８…ドーム型散光板。
Fig. 1 is a schematic diagram showing a photo head section of a photographic projector to which one embodiment of the light diffusing plate of the present invention is applied, Fig. 2 is a diagram showing another embodiment, and Fig. 3 is a schematic diagram showing a conventional means. 4A is a graph showing the light amount distribution on the projection plane by the conventional means shown in FIG. 3, and B is a graph showing the light amount distribution by the device of the present invention. 1...Photo head, 2...Light source lamp, 3...Original picture, 4...Reflection box, 5...Through hole, 6...Diffusing plate, 7
, 8...Dome-shaped diffuser plate.
Claims (1)
投影する写真投影機で、前記原画の背面に配置し
た反射ボツクスの側壁に設けた透孔より照射光束
を入射させ、その散乱光により前記原画を照明す
るようにした装置において、前記透明孔に、前記
反射ボツクスの内部に突出するドーム状散光板を
付設してなる写真投影機の原画照明装置。 (2) ドーム状散光板が、半球形である実用新案
登録請求の範囲第(1)項に記載の写真投影機の原
画照明装置。 (3) ドーム状散光板が、回転楕円体を二分した
形状である実用新案登録請求の範囲第(1)項に記
載の写真投影機の原画照明装置。[Scope of Claim for Utility Model Registration] (1) A photographic projector that projects the image of a transparent original image onto a formed image using an imaging optical system, in which light is irradiated through a through hole provided in the side wall of a reflective box placed on the back of the original image. An original illuminating device for a photographic projector, in which a luminous flux is incident and the original image is illuminated by the scattered light thereof, wherein a dome-shaped diffuser plate projecting into the interior of the reflective box is attached to the transparent hole. (2) The original illumination device for a photographic projector according to claim (1), wherein the dome-shaped diffuser plate is hemispherical. (3) The original illumination device for a photographic projector according to claim (1), wherein the dome-shaped diffuser plate has a shape obtained by bisecting a spheroid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15645885U JPS6265643U (en) | 1985-10-15 | 1985-10-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15645885U JPS6265643U (en) | 1985-10-15 | 1985-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6265643U true JPS6265643U (en) | 1987-04-23 |
Family
ID=31078092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15645885U Pending JPS6265643U (en) | 1985-10-15 | 1985-10-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6265643U (en) |
-
1985
- 1985-10-15 JP JP15645885U patent/JPS6265643U/ja active Pending
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