【０００１】
【発明の属する技術分野】
本発明は電子画像を利用した映写機で電子機器分野に属する。
【０００２】
【従来の技術】
従来は部品全体を比較的平坦な匡体の中に納め、被写体は匡体の上部に設けたステ−ジに被写体を置いてステ−ジ面をＣＣＤカメラで写す方式と、ＣＣＤカメラを匡体から離した上部に置き被写体を上部から捉える方式が有ったが何れも投影部分は机上に置かれた匡体内に有って映写されるスクリ−ン下端が机上面の高さに過ぎず、映写される画面の下部が見え難く補助の台を用いて全体を高い位置に上げるか映写機を傾けて映写して居た。
【０００３】
図２では此の状況を示す、又一部の機器に於いては映写する原稿を裏返してステ−ジに載せるという操作を必要とし映写中は原稿に触れる事が出来無い。
また実物もステ−ジ側が映写される事で著しい制限を受けていた。これを避ける方式として撮像部を分離した機器も現れたが投影位置が低いという問題は残り台の使用は避けられ無かった。
【０００４】
【発明が解決しようとする課題】
大会場などで講演者と機器操作者が別で有る場合は従来の方式でも映写機器を高い台の上に乗せる事で問題は解決するが機器を支える台が視野を遮ると言う好ましくない事態を招く。次いで見える侭を写す正立正像方式は光学系では複雑な長い光路を要し通過する光の損失を起こして画面が暗くなると言う致命的な障害が起きる。
【０００５】
【課題を解決するための手段】
映写するに当たって映写レンズの光軸を高い位置に取れば機器を台の上に上げる必要も無くなるが全体が大きくなり据置式とせざるを得ない。
映写時に光軸を高く出来る方法として折り畳み式の支持脚を本体の左右に設け映写時には脚を用いて本体を挙げ、収納時には脚を畳む事で従来の映写機と同等な寸法に納めた。図１は此の構成に依るステ−ジとなる薄い台 １−１、と支持脚に当たる構造物 １−２、光学系を納めたヘッド部 １−３から成る。
【０００６】
【発明の実施の形態】
１−１のステ−ジは上部の重量を支える強度と机上に据えられる丈の精度が有れば良い。１−３のヘッド部は内部に光学エンジンを持ち必要な電力はステ−ジに設けた電源及び１−２の支持脚内の制御部に依り映写される。
更に実施に当たっては被写体を置く向きと投影方向を一致させ見た侭がスクリ−ン上の画像と成る光学系とし、従来の如きＯＨＰ式に資料を投影方向と逆に置く必要を無くし使い勝手を改良した。投影方向と被写体の方向の一致は従来のＯＨＰ式映写機では非常に複雑な光学系を要し実用に至らなかったが、本発明では電気信号を切り替える事で此の方式を完成し、同様な切替え操作でＯＨＰ式の投影も可能である。
【０００７】
本発明は映写機自体をより簡略化し軽量化する目的でデジタル表示装置を持つ撮像機としてデジタルカメラを用いた。
は完全でなく他の機器からの入力を受けて映写出来る為のインタ−フェ−スを用意しこれを接続出来る方式とした。斯くする事で各種機器からの入力を受けての映写が可能となり用途を拡大できる。
【０００８】
【実施例】
実施例ではデジタルカメラの表示部と同一画素数の液晶投影機とし制御を簡略化した。撮像部としてデジタルカメラを其の侭用いるので配置に依ってはデジタルカメラの映像が逆転し、図３の例で示す様な光学系で補正を行いスクリ−ン画面とデジタルカメラ画面の整合を行う必要を生じる。デジタルカメラレンズが直接ステ−ジに向かう時には不要で有る。
【０００９】
【発明の効果】
本発明に依ってＯＨＰ方式の如くに原稿が透明で有る必要は無く、通常の紙面に記した原稿、又書籍の類もステ−ジに置いて見た侭がスクリ−ンに映写でき映写中も自由に映写画面に指示等の介入が可能と成った。別しての効果は従来の実物投影機に比してスクリ−ン面でＯＨＰ並の明るさを持てる事で室内を暗室とせず画像を視認する事が出来た。
【図面の簡単な説明】
【図１】本発明に於けるデジタルカメラと映写機の配置例を示す。
【図２】従来の映写機の映写状況を示す。
【図３】補正光学系を示す。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a projector using an electronic image and belongs to the field of electronic devices.
[0002]
[Prior art]
Conventionally, the whole parts are housed in a relatively flat case, the subject is placed on a stage provided on the top of the case, and the stage surface is photographed with a CCD camera. There was a method of placing the subject on the top away from the top but catching the subject from the top, but in any case the projected part was in the housing placed on the desk and the lower end of the screen projected was only the height of the desk top, The lower part of the projected screen was hard to see, so the whole was raised to a higher position using an auxiliary stand or the projector was tilted and projected.
[0003]
FIG. 2 shows this situation. Also, in some devices, it is necessary to turn over the original to be projected and place it on the stage, and the original cannot be touched during projection.
In addition, the real thing was also severely restricted by the projection of the stage side. As a method for avoiding this, some devices having separate imaging units have appeared, but the problem of a low projection position has unavoidably prevented the use of the rest.
[0004]
[Problems to be solved by the invention]
If the lecturer and the device operator are separate in a large venue, the problem can be solved by placing the projection device on a high table in the conventional method, but the unfavorable situation that the table supporting the device blocks the field of view will be solved. Invite. Next, the erect image method that captures the visible state requires a complicated long optical path in the optical system, causing a loss of passing light and causing a fatal obstacle that a screen becomes dark.
[0005]
[Means for Solving the Problems]
If the optical axis of the projection lens is set at a high position when projecting, there is no need to raise the equipment on the table, but the whole becomes large and must be of a stationary type.
As a method of raising the optical axis at the time of projection, foldable support legs are provided on the left and right sides of the main unit, the main unit is raised using the legs at the time of projection, and the legs are folded at the time of storage, so that the size is equivalent to the conventional projector. FIG. 1 includes a thin base 1-1 serving as a stage according to this configuration, a structure 1-2 corresponding to a support leg, and a head part 1-3 containing an optical system.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The stage 1-1 only needs to have the strength to support the weight of the upper portion and the accuracy of the length to be set on the desk. The head section 1-3 has an optical engine inside, and the required power is projected by a power supply provided in the stage and a control section in the support leg 1-2.
Furthermore, in implementation, the orientation of the subject and the projection direction are matched and the optical system is used as an image on the screen as seen, eliminating the need for the conventional OHP type to place the material in the opposite direction to the projection direction and improving usability. did. The conventional OHP type projector required a very complicated optical system to match the direction of the projection and the direction of the subject, which was not practical. However, in the present invention, this method was completed by switching electrical signals, and similar switching was performed. OHP projection is also possible by operation.
[0007]
In the present invention, a digital camera is used as an image pickup device having a digital display device in order to further simplify and reduce the weight of the projector itself.
Is an incomplete interface that provides an interface for receiving an input from another device and projecting the image and connecting the interface. In this way, it is possible to perform projection upon receiving an input from various devices, and the use can be expanded.
[0008]
【Example】
In the embodiment, the control is simplified by using a liquid crystal projector having the same number of pixels as the display unit of the digital camera. Since the digital camera is used as the imaging unit as it is, the image of the digital camera is reversed depending on the arrangement, and correction is performed by an optical system as shown in the example of FIG. 3 to match the screen screen and the digital camera screen. Create need. It is unnecessary when the digital camera lens goes directly to the stage.
[0009]
【The invention's effect】
According to the present invention, there is no need for the original to be transparent as in the OHP system. Originals written on ordinary paper and books can be projected on the screen as they are placed on the stage and projected on the screen. In addition, it is possible to freely intervene with instructions on the projection screen. Another effect is that the image can be visually recognized without making the room a dark room by having the same brightness as the OHP on the screen surface as compared with the conventional real projector.
[Brief description of the drawings]
FIG. 1 shows an example of the arrangement of a digital camera and a projector in the present invention.
FIG. 2 shows a projection situation of a conventional projector.
FIG. 3 shows a correction optical system.
