JPH02190821A - LCD shutter array head - Google Patents
LCD shutter array headInfo
- Publication number
- JPH02190821A JPH02190821A JP1011601A JP1160189A JPH02190821A JP H02190821 A JPH02190821 A JP H02190821A JP 1011601 A JP1011601 A JP 1011601A JP 1160189 A JP1160189 A JP 1160189A JP H02190821 A JPH02190821 A JP H02190821A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- shutter array
- crystal shutter
- light source
- array head
- 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
- 239000004973 liquid crystal related substance Substances 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、液晶シャッタアレイヘッドの冷却装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cooling device for a liquid crystal shutter array head.
従来の液晶シャッタを用いた液晶シャッタアレイヘッド
は、第３図に示すように光源部１と光量を調整するＮＤ
フィルター４の間に赤外線を透過するハーフミラ−３を
置き、赤外線による熱伝導を極力おさえていた。A liquid crystal shutter array head using a conventional liquid crystal shutter has a light source section 1 and an ND for adjusting the light amount, as shown in FIG.
A half mirror 3 that transmits infrared rays was placed between the filters 4 to suppress heat conduction due to infrared rays as much as possible.
しかし、前述の従来技術では、長時間使用した場合ハー
フミラ−３で赤外線を十分除去できないため、残赤外線
の熱によりファイバーブロック結束側端面（ａ）が変形
したり、又使用温度領域範囲が狭い液晶シャッタアレイ
７の１部分が使用温度領域外となるため出射光量が均一
にならないという問題点を有していた。However, with the above-mentioned conventional technology, when used for a long time, the half mirror 3 cannot sufficiently remove infrared rays, so the end face (a) of the bundled fiber block may be deformed by the heat of the residual infrared rays, and the liquid crystal display, which has a narrow operating temperature range, may Since a portion of the shutter array 7 is outside the operating temperature range, there is a problem in that the amount of emitted light is not uniform.
そこで本発明は、前記の問題点を解決するものであり、
ファイバーブロック結束側端面の変形を防止し、且つ出
射光量が均一な液晶シャッタアレイヘッドを提供するこ
とを目的とする。Therefore, the present invention solves the above problems,
It is an object of the present invention to provide a liquid crystal shutter array head that prevents deformation of the fiber block bundle side end face and that emits a uniform amount of light.
本発明の液晶シャッタアレイヘッドは、点光源を面光源
に置き換える光源部と、一端を結束し、部端をライン状
に並べたファイバーブロックと、ライン状に配列され選
択的に開閉駆動される液晶シャッタにより構成されファ
イバーブロック結束側に冷却装置を設けたことを特徴と
する。The liquid crystal shutter array head of the present invention includes a light source section that replaces a point light source with a surface light source, a fiber block whose one end is tied together and whose ends are arranged in a line, and a liquid crystal display arranged in a line and selectively driven to open and close. It is characterized by being composed of a shutter and provided with a cooling device on the side where the fiber blocks are bundled.
又、ファイバーブロック結束側と液晶シャッタアレイを
同時に冷却する機構を設けたことを特徴とする。Moreover, it is characterized by providing a mechanism for cooling the fiber block binding side and the liquid crystal shutter array at the same time.
以下に本発明の実施例を図面にもとづいて説明する。第
１図に於いて、光源部１は、点光源であるハロゲンチュ
ーブと点光源からの放射光を面光源に置き換えるための
半球面状の反射板よりなり、光源は反射板内壁面より反
射し、光フアイバーブロック部２の光源部１に対向して
いる側の結束部（ａ）に入射し、光フアイバー内を通過
し、Ｒ面ミラー６を介して液晶シャッタアレイ７に照射
される。液晶シャッタアレイ７は、各々シャッタ駆動回
路からの信号に応じて選択的に開閉駆動され、液晶シャ
ッタが開くことにより、光は透過されセルフォックレン
ズアレイ８に入射し、光出射側の感光体ドラム９に正立
実像を露光する。Embodiments of the present invention will be described below based on the drawings. In Fig. 1, the light source section 1 consists of a halogen tube that is a point light source and a hemispherical reflector plate for replacing the emitted light from the point light source with a surface light source, and the light source is reflected from the inner wall surface of the reflector plate. , enters the binding part (a) of the optical fiber block part 2 on the side facing the light source part 1, passes through the optical fiber, and is irradiated onto the liquid crystal shutter array 7 via the R-plane mirror 6. The liquid crystal shutter arrays 7 are selectively driven to open and close according to signals from the shutter drive circuits, and when the liquid crystal shutters open, light is transmitted and enters the SELFOC lens array 8, and the photosensitive drum on the light output side. 9, the erect real image is exposed.
光経路の途中には、光を折り曲げ且つ、赤外線を透過す
るようなハーフミラ−３及び、光Ｉｔ調整をするための
ＮＤフィルター４が設けられている。A half mirror 3 that bends light and transmits infrared rays, and an ND filter 4 for adjusting the light It are provided in the middle of the optical path.
ここで、ハーフミラ−３によって透過しきれない赤外線
により結束部端面（ａ）が昇温し、変形することを防止
するために結束部端面（ａ）近傍に冷却ファン５を設け
ている。Here, a cooling fan 5 is provided in the vicinity of the end surface (a) of the bundle in order to prevent the end surface (a) of the bundle from being heated and deformed by infrared rays that are not fully transmitted by the half mirror 3.
又、第２図に示すように冷却ファン５を用いて前記記載
結束部端面（ａ）と液晶シャッタアレイ７を共に冷却す
ることにより、液晶シャッタアレイ７の一部分が使用温
度領域外になることがなくなった為に出射光■の不均一
がなくなった。Furthermore, as shown in FIG. 2, by cooling both the end face (a) of the binding part and the liquid crystal shutter array 7 using a cooling fan 5, it is possible to prevent a part of the liquid crystal shutter array 7 from being outside the operating temperature range. As a result, the non-uniformity of the emitted light has disappeared.
以上述べたように本発明によればファイバーブロック結
束部側に冷却機構を設けることにより、ファイバーブロ
ック結束側端面の変形を防止すると共に、液晶シャッタ
の出射光量の均一化を可能にする０例えば電子写真プリ
ンタに於いて高品位な印字品質が可能になり、長時間使
用可能なプリンタを提供できる。又、使用温度領域が拡
大する為に、高信頼性のプリンタを提供できるという効
果を有する。As described above, according to the present invention, by providing a cooling mechanism on the side of the fiber block bundle, it is possible to prevent deformation of the end face on the fiber block bundle side and to make the amount of light emitted from the liquid crystal shutter uniform. High quality printing is possible in a photo printer, and a printer that can be used for a long time can be provided. Furthermore, since the operating temperature range is expanded, a highly reliable printer can be provided.
９・・・感光体ドラム （ａ）・・・結束部端面 以 上 出願人 セイコーエプソン株式会社 代理人 弁理士 鈴木 喜三部 他１名9...Photosensitive drum (a)...Bundle end face that's all Applicant: Seiko Epson Corporation Agent: Patent attorney Kisanbe Suzuki and 1 other person
第１図と第２図は本発明の液晶シャッタアレイヘッドの
構成図。
第３図は液晶シャッタアレイヘッドの従来構成図。
１・・・光源部
２・・・光フアイバーブロック部
３・・・ハーフミラ−
４・・・ＮＤフィルター
５・・・冷却ファン
６・・・Ｒ面ミラー
７・・・液晶シャッタアレイ
８・・・セルフオツクレンズアレイ1 and 2 are configuration diagrams of a liquid crystal shutter array head of the present invention. FIG. 3 is a conventional configuration diagram of a liquid crystal shutter array head. 1... Light source section 2... Optical fiber block section 3... Half mirror 4... ND filter 5... Cooling fan 6... R-plane mirror 7... Liquid crystal shutter array 8... self cleanse array
Claims (2)
束し、他端をライン状に並べたファイバーブロックと、
ライン状にシャッタを配列し、選択的に開閉駆動させる
液晶シャッタにより構成される液晶シャッタアレイヘッ
ドのファイバーブロック結束側に冷却機構を設けたこと
を特徴とする液晶シャッタアレイヘッド。(1) A light source section that replaces a point light source with a surface light source, a fiber block with one end tied together and the other end arranged in a line,
A liquid crystal shutter array head comprising a liquid crystal shutter array in which shutters are arranged in a line and is selectively driven to open and close, and a cooling mechanism is provided on the fiber block binding side of the liquid crystal shutter array head.
レイを同時に冷却する機構を設けたことを特徴とする請
求項１記載の液晶シャッタアレイヘッド。(2) The liquid crystal shutter array head according to claim 1, further comprising a mechanism for simultaneously cooling the fiber block binding side and the liquid crystal shutter array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1011601A JPH02190821A (en) | 1989-01-20 | 1989-01-20 | LCD shutter array head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1011601A JPH02190821A (en) | 1989-01-20 | 1989-01-20 | LCD shutter array head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02190821A true JPH02190821A (en) | 1990-07-26 |
Family
ID=11782425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1011601A Pending JPH02190821A (en) | 1989-01-20 | 1989-01-20 | LCD shutter array head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02190821A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765934A (en) * | 1995-08-04 | 1998-06-16 | Mitsubishi Denki Kabushiki Kaisha | Projection type display |
| WO2010061684A1 (en) * | 2008-11-26 | 2010-06-03 | 三洋電機株式会社 | Illuminating device and projection image display device |
-
1989
- 1989-01-20 JP JP1011601A patent/JPH02190821A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765934A (en) * | 1995-08-04 | 1998-06-16 | Mitsubishi Denki Kabushiki Kaisha | Projection type display |
| WO2010061684A1 (en) * | 2008-11-26 | 2010-06-03 | 三洋電機株式会社 | Illuminating device and projection image display device |
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