JPS59201034A - Overhead projector - Google Patents

Overhead projector

Info

Publication number
JPS59201034A
JPS59201034A JP7689383A JP7689383A JPS59201034A JP S59201034 A JPS59201034 A JP S59201034A JP 7689383 A JP7689383 A JP 7689383A JP 7689383 A JP7689383 A JP 7689383A JP S59201034 A JPS59201034 A JP S59201034A
Authority
JP
Japan
Prior art keywords
lens
stage
magnifying
projection
support
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
Application number
JP7689383A
Other languages
Japanese (ja)
Inventor
Tatsuo Kitami
北見 龍男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP7689383A priority Critical patent/JPS59201034A/en
Publication of JPS59201034A publication Critical patent/JPS59201034A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/132Overhead projectors, i.e. capable of projecting hand-writing or drawing during action

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

PURPOSE:To improve operability in case of changing a magnification by providing a magnifying lens set to the prescribed position of a standard projection lens in case of a magnifying projection, in the vicinity of said projection lens, and connecting a stage and the magnifying lens to each other by a mechanical interlocking means. CONSTITUTION:A stage 4 on which a standard projection lens 6 and a support 5 are provided vertically is formed separately from a rack base 1a. The stage 4 is provided with a supporting part 11 in which a support 5 passes through freely slidably, and the stage 4 is attached freely liftably along the support 5. A magnifying lens 7 which is supported by a shaft 12 and set to a prescribed position of the lens 6 in case of a magnifying projection is provided in the vicinity of the lens 6. In case of the magnifying projection, when an operating lever 13 is shifted from a detaining groove 15a side to the other detaining groove 15b side, the stage 4 is suspended upward by a wire 14a through a roller 16, lifted along the support 5, and also the magnifying lens 7 is drawn by a wire 14b through the rollers 16, 18, and an interlocking lever 17 is rotated, by which the shaft 12 is rotated and set to its operating position.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、講演や会議等の際に透明原稿に描かれた画
像を投映レンズや反射ミラーを通してスクリーン上(−
映し出すためのオーバーへラドプロジェクタに係り、特
に、その部分拡大機構の改良に関する。
[Detailed Description of the Invention] [Industrial Application Field] This invention is a method of transmitting an image drawn on a transparent document onto a screen (-
The present invention relates to an over-the-top projector for displaying images, and particularly to improvements in its partial enlargement mechanism.

〔従来技術〕[Prior art]

従来、この種のオーバーへラドプロジェクタにおける部
分拡大機構としては、例えば第1図に示すように、光源
(2)、フレネルレンズ(3)及びステージ(4)を備
えた機体(1)の上面に補助ステージ(4a)をセット
し、また、機体(1)に設けられた支柱(5)によって
機体(1)の上面上方に配設された標準投映レンズ(6
)には拡大レンズ(7)をセットし、上記補助ステージ
(4a)上にセットされた透明原稿(8)の画像を光源
(1)から発してフレネルレンズ(2)、ステージ(3
)、補助ステージ(4a)、透明原稿(8)、拡大レン
ズ(7)、標準投映レンズ(6)及び反射ミラー(9)
を経てスクリーンαQに投映させる゛ようにしたものが
知られている。
Conventionally, as a partial enlargement mechanism in this type of over-radiation projector, for example, as shown in FIG. The auxiliary stage (4a) is set, and the standard projection lens (6
) is set with a magnifying lens (7), and the image of the transparent original (8) set on the auxiliary stage (4a) is emitted from the light source (1), and the Fresnel lens (2) and stage (3)
), auxiliary stage (4a), transparent original (8), magnifying lens (7), standard projection lens (6), and reflective mirror (9)
There is a known device in which the image is projected onto a screen αQ through a process.

しかしながら、このような部分拡大機構を備えたオーバ
ーヘラドプロジェクタにおいては、部分拡大投映を行う
たびに機体(11のステージ(4)上に補助ステージ(
4a)をセットすると共に標準投映レンズ(6)には拡
大レンズ(7)をセットしなければならず、また、この
部分拡大投映の状態がら標準投映に戻すに−は上記補助
ステージ(4a)と拡大レンズ(7)を取り外さなけれ
ばならず、操作が極めて面倒であるという問題があ−っ
た。
However, in an overherad projector equipped with such a partial enlargement mechanism, an auxiliary stage (
4a) and the standard projection lens (6) must also be set with the magnifying lens (7), and in order to return to the standard projection from this partially enlarged projection state, the auxiliary stage (4a) and There was a problem in that the magnifying lens (7) had to be removed, making operation extremely troublesome.

また、オーバーヘラドプロジェクタにおける他の部分拡
大機構として、投映レンズとステージとを連動させ、モ
ータと駆動機構により操作するものも知られているが、
このような自動操作のタイプのものにおいては、操作性
は改善されても、機構が複雑になってコストが著るしく
高くなり、しかも、変倍時の待ち時間が長く、その間の
スクリーン画像が激しく揺れて見にくいという問題があ
った。
In addition, as another partial magnification mechanism for overherad projectors, one is known in which the projection lens and stage are linked and operated by a motor and drive mechanism.
Although this type of automatic operation improves operability, the mechanism becomes complicated and the cost increases significantly. Moreover, the waiting time when changing the magnification is long, and the screen image is not displayed during that time. The problem was that it was shaking so violently that it was difficult to see.

〔発明の目的〕[Purpose of the invention]

従って、本発明の目的は、倍率を変える際における操作
性に優れ、かつ、待ち時間が著るしく、短く、しかも、
製造コストも安価である部分拡大機構を備えたオーバー
へラドプロジェクタを提供することにある。
Therefore, an object of the present invention is to provide excellent operability when changing the magnification, and to significantly shorten the waiting time.
It is an object of the present invention to provide an over-rad projector equipped with a partial enlargement mechanism that is inexpensive to manufacture.

〔発明の構成〕[Structure of the invention]

すなわち、本発明は、オーバーへラドプロジェクタの機
体を構成する架台には機、体上面上方に配設される標準
投映レンズ及び反射ミラーを支承する支柱を立設すると
共に上記架台と別体に形成したステージを支柱に沿って
昇降可能に取付け、上記標準投映レンズの近傍には拡大
投映の際にこの投映レンズの所定位置にセットされる拡
大レンズを配設し、上記ステージと拡大レンズとを互い
に機械的連動手段で連結し、これら、ステージと拡大レ
ンズとを手動により同時にその所定位置に位置決めでき
るようにした部分拡大機構を備えており、これによって
上記目的を達成することができるオーバーへラドプロジ
ェクタに関する。
That is, in the present invention, a support that supports the standard projection lens and a reflection mirror disposed above the top surface of the Overherad projector is erected on the mount that constitutes the body of the Overherad projector, and is formed separately from the mount. A magnifying lens is installed near the standard projection lens to be set at a predetermined position of the projection lens during enlarged projection, and the stage and the magnifying lens are connected to each other. An over-herad projector that is connected by mechanical interlocking means and equipped with a partial magnification mechanism that allows the stage and magnifying lens to be manually positioned at the same time at their predetermined positions, thereby achieving the above purpose. Regarding.

〔実施例〕〔Example〕

以下、添付図面に示す実施例に基づいて本発明の構成を
詳細に説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below based on embodiments shown in the accompanying drawings.

第2図において、本発明の実施例に係るオーバーへラド
プロジェクタの要部が示されている。この実施例におい
て、オーバーへラドプロジェクタの機体(11を構成す
る架台(la)のコーナ一部上面には機体(1)の上面
上方に位置される標準投映レンズ(6)や図示外の反射
ミラーを支承する支柱(5)を立設し、上記機体(1)
を構成するステージ(4)を上記架台(1a)と別体に
形成すると共にこのステージ(4)には上記支柱(5)
が摺動自在に貫通する支持部αηを設けてステージ(4
)を支柱(5)に沿って昇降自在に取付け、また、上記
標準投映レンズ(6)の近傍には軸αつによって支承さ
れて拡大投映の際に標準投映レンズ(6)の所定位置(
図中破線で示す位置)にセットされる拡大レンズ(7)
を配設し、上記ステージ(4)と拡大レンズ(ワ)とを
機械的な連動手段で互いに連動連結し、これらステージ
(4)と拡大レンズ(7)とを同時にその所定位置に移
動させて位置決めすることができるようにしている。
In FIG. 2, main parts of an over-rad projector according to an embodiment of the present invention are shown. In this embodiment, a standard projection lens (6) located above the top surface of the body (1) and a reflection mirror (not shown) are located on a part of the upper surface of the corner of the frame (LA) constituting the body (11) of the Overherad projector. A support column (5) is erected to support the above aircraft (1).
A stage (4) constituting the frame is formed separately from the pedestal (1a), and the stage (4) is equipped with the support column (5).
The stage (4
) is attached so as to be able to rise and fall freely along the pillar (5), and is supported by an axis α near the standard projection lens (6), so that the standard projection lens (6) can be positioned at a predetermined position (
The magnifying lens (7) is set in the position indicated by the broken line in the figure.
, the stage (4) and the magnifying lens (W) are interlocked and connected to each other by mechanical interlocking means, and the stage (4) and the magnifying lens (7) are simultaneously moved to their predetermined positions. This allows for positioning.

この実施例(:おいて、ステージ(4)と拡大レンズ(
7)との間を連動連結するための連動手段は、上記支柱
(5)の上部に形成されたスリットαりに摺動可能に嵌
挿されtいる操作杆αJと、一端が上記ステージ(4)
の支持部αηに固定され、かつ、他端が支柱(5)上端
部に設けられたローラーαQを介して上記操作杆的に固
定されているワイヤー(14a)と、一端が上記拡大レ
ンズ(7)を支承する軸αつに設けられた連動杆αηに
固定され、かつ、他端がローラーαfG(18)を介し
て上記操作杆α→に固定されているワイヤー(14b)
とで構成されている。
In this example, the stage (4) and the magnifying lens (
The interlocking means for interlocking and connecting the above-mentioned stage (4) is an operating rod αJ which is slidably inserted into a slit α formed in the upper part of the support column (5), and one end of which is connected to the above-mentioned stage (4). )
A wire (14a) is fixed to the support part αη of the support part αη, and the other end is fixed to the operation rod via the roller αQ provided at the upper end of the support column (5), and one end is fixed to the said magnifying lens (7). ), and the other end is fixed to the operating rod α→ via a roller αfG (18).
It is made up of.

上記スリンH5は、支柱(5)の長手方向上下に延び、
その上端には標準投映の際に操作杆α椴が係止される係
止溝(15a)を有すると共にその下端には拡大投映の
際に操作杆α1が係止される係止溝(15b)を有する
。一方、拡大レンズ(7)を支承する軸αりは回動可能
になっていると共にこの軸(¥にはコイルスプリングα
9)が巻装されており、拡大レンズ(7)は、上記コイ
ルスプリング(10によって標準投映時に光軸から外れ
た待期位装置(図中実線で示す位置)に位置されている
。また、拡大レンズ(7)側と操作杆α1との間を連動
連結するワイヤー(14b)には、その任意の位置にス
プリング(イ)が介装されており、操作杆(13がスリ
ット(1時の係止溝(15b)側に向けて操作され、拡
大レンズ(7)が拡大投映時に標準投映レンズ(6)の
所定位置、すなわち図中破線で示す作動位置(ニセット
される際に拡大レンズをその作動位置に正確(′−セッ
トすることができるようになっている。
The sulin H5 extends vertically in the longitudinal direction of the support column (5),
Its upper end has a locking groove (15a) in which the operating rod α1 is locked during standard projection, and its lower end has a locking groove (15b) in which the operating rod α1 is locked during enlarged projection. has. On the other hand, the axis α that supports the magnifying lens (7) is rotatable and a coil spring α is attached to this axis.
9) is wound, and the magnifying lens (7) is positioned by the coil spring (10) at a standby position device (the position shown by the solid line in the figure) which is off the optical axis during standard projection. The wire (14b) that interlocks and connects the magnifying lens (7) side and the operating rod α1 is equipped with a spring (A) at an arbitrary position. When the magnifying lens (7) is operated toward the locking groove (15b) side, the magnifying lens (7) is moved to the predetermined position of the standard projection lens (6) during magnified projection, that is, the operating position shown by the broken line in the figure (when being reset, the magnifying lens (7) is It can be set accurately in the operating position.

従って、この実施例のオーバーヘラドプロジェクタによ
れば、標準投映の際には、操作杆α葎がスリットα0の
係止溝(15a)に係止し、ステージ(4)が架台(1
a)上面上に位置し、また、拡大レンズ(7)はその待
期位置に位置している。この標準投映の状態から拡大投
映の状態に移行させる際には、操作杆α葎を、スリット
α鴎の他方の係上溝(15b)側に移行させてこの係止
溝(15b)に係止させる。操作杆α場を係止溝(15
a)側から他方の係止溝(15b)側に移行させると、
ステージ(4)はローラーへ9を介してワイヤーα4a
)により上方に吊り上げられ、支柱(5)に沿って上昇
し、また、拡大レンズ(7)は、ローラーαectqを
介して一ワイヤー(14b)が引っ張られてこのワイヤ
ー(14b)が連動杆αηを回動させることにより、軸
αつがその軸回りにコイルスプリングαつの付勢力に抗
して回転してその作動位置にセットされる。
Therefore, according to the overherad projector of this embodiment, during standard projection, the operating rod α is locked in the locking groove (15a) of the slit α0, and the stage (4) is
a) is located on the top surface, and the magnifying lens (7) is located in its standby position. When transitioning from the standard projection state to the enlarged projection state, the operating rod α is moved to the other locking groove (15b) side of the slit α hook and is locked in this locking groove (15b). . The operating rod α field is locked in the groove (15
When moving from the a) side to the other locking groove (15b) side,
Stage (4) connects wire α4a to roller through 9.
) and rises along the support column (5), and the magnifying lens (7) is pulled by a wire (14b) via a roller αectq, and this wire (14b) moves the interlocking rod αη. By rotating, the shafts α are rotated around the shafts against the biasing force of the coil springs α, and set to the operating position.

なお、上記実施例においては、光源が機体(1)の゛ 
内部に設けられた透過型オーバーへラドプロジェクタを
例にして説明したが、光源が支柱(5)の上端部(=設
けられる反射型オーバーへラドプロジェクタ(二本発明
を適用できることは勿論であり、また、フレネルレンズ
についてはステージ(4)と架台(1a)のいずれの側
(−設けてもよいものである。
In addition, in the above embodiment, the light source is
Although the explanation has been given by taking as an example a transmission-type over-projector provided inside, the light source is provided at the upper end of the support column (5) (=a reflective-type over-reflection projector (= two) of course the present invention can be applied. Further, the Fresnel lens may be provided on either side of the stage (4) or the pedestal (1a).

〔発明の効果〕〔Effect of the invention〕

本発明は、上記の如き構成を有するので、部分拡大機構
により標準投映から拡大投映に移行させたり、あるいは
逆(=拡大投映から標準投映吃二移行させたりする変倍
時に、単に操作杆を手動で移行させるだけでステージ及
び拡大レンズをその所定位置にセットすることができる
のでその操作性が極めて優れているほか、変倍時におけ
る待ち時間も極めて短縮され、しかも、従来の自動部分
拡大機構のようにモータや駆動機構等を必要とせず、機
構が複雑になることがないほか、その製造コストも廉価
にすることができる。
Since the present invention has the above-described configuration, when changing the magnification by shifting from standard projection to enlarged projection using the partial enlargement mechanism, or vice versa (=transitioning from enlarged projection to standard projection), the operation lever is simply manually operated. The stage and magnifying lens can be set in their predetermined positions simply by moving the stage with As such, it does not require a motor or drive mechanism, so the mechanism does not become complicated, and the manufacturing cost can be reduced.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来のオーバーへラドプロジェクタを示す説明
図、第2図は本発明のオーツq−ヘッドフ。 ロジエクタの要部を示す斜視説明図である。 符号説明 (1)・・・・・・機体     (1a)・・・・・
・架台(4)・・・・・・ステージ   (5)・・・
・・・支柱(6)・・・・・・標準投映レンズ (7)
・・・・・・拡大レンズ(8)・・・・・・透明原稿 
  (9)・・・・・・反射ミラー(if)・・・・・
・スクリーン ゛ 第1図
FIG. 1 is an explanatory diagram showing a conventional over-the-radar projector, and FIG. 2 is an illustration of an oats q-head according to the present invention. FIG. 2 is a perspective explanatory view showing the main parts of the logicer. Code explanation (1)... Aircraft (1a)...
- Frame (4)... Stage (5)...
...Standard (6) ...Standard projection lens (7)
...Magnifying lens (8) ...Transparent original
(9)...Reflection mirror (if)...
・Screen ゛Figure 1

Claims (1)

【特許請求の範囲】[Claims] 機体上面に形成されたステージ上に透明原稿を載置し、
この透明原稿の画像を機体上面上方に配設された投映レ
ンズ及び反射ミラーを通してスクリーン上に投映するオ
ーバーへラドプロジェクタにおいて、上記機体を構成す
る架台には機体上面上方(二配設される上記投映レンズ
及び反射ミラーを支承する支柱を設けると共に上記架台
と別体に形成したステージを上記支柱に沿って昇降自在
(=取付け、上記投映レンズの近傍には拡大投映の際に
上記投映レンズの所定位置にセットされる拡大レンズを
配設し、上記ステージと拡大レンズとを互いに機械的連
動手段で連結してこれらステージと拡大レンズとを同時
にその所定位置に位置決めすることを特徴とするオーバ
ーヘラドプロジェクタ。
Place the transparent original on the stage formed on the top of the machine,
In the over-the-top projector, which projects the image of this transparent document onto a screen through a projection lens and a reflective mirror arranged above the top surface of the machine, a pedestal composing the machine is mounted above the top surface of the machine. A support is provided to support the lens and a reflective mirror, and a stage formed separately from the mount can be raised and lowered along the support (=installation). An overherad projector, characterized in that a magnifying lens is provided, and the stage and the magnifying lens are connected to each other by a mechanical interlocking means to simultaneously position the stage and the magnifying lens at a predetermined position. .
JP7689383A 1983-04-30 1983-04-30 Overhead projector Pending JPS59201034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7689383A JPS59201034A (en) 1983-04-30 1983-04-30 Overhead projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7689383A JPS59201034A (en) 1983-04-30 1983-04-30 Overhead projector

Publications (1)

Publication Number Publication Date
JPS59201034A true JPS59201034A (en) 1984-11-14

Family

ID=13618320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7689383A Pending JPS59201034A (en) 1983-04-30 1983-04-30 Overhead projector

Country Status (1)

Country Link
JP (1) JPS59201034A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6298336A (en) * 1985-10-24 1987-05-07 Fuji Photo Film Co Ltd Reflection type overhead projector with variable power
JPS6374632U (en) * 1986-10-31 1988-05-18
US4921343A (en) * 1985-09-05 1990-05-01 Fuji Photo Film Co., Ltd. Overhead projector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921343A (en) * 1985-09-05 1990-05-01 Fuji Photo Film Co., Ltd. Overhead projector
JPS6298336A (en) * 1985-10-24 1987-05-07 Fuji Photo Film Co Ltd Reflection type overhead projector with variable power
JPH0535849B2 (en) * 1985-10-24 1993-05-27 Fuji Photo Film Co Ltd
JPS6374632U (en) * 1986-10-31 1988-05-18

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