JPS60242425A - Imaging device - Google Patents

Imaging device

Info

Publication number
JPS60242425A
JPS60242425A JP59098973A JP9897384A JPS60242425A JP S60242425 A JPS60242425 A JP S60242425A JP 59098973 A JP59098973 A JP 59098973A JP 9897384 A JP9897384 A JP 9897384A JP S60242425 A JPS60242425 A JP S60242425A
Authority
JP
Japan
Prior art keywords
light source
array
optical fiber
optical
optical system
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
JP59098973A
Other languages
Japanese (ja)
Inventor
Masatoshi Yonekubo
政敏 米窪
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP59098973A priority Critical patent/JPS60242425A/en
Publication of JPS60242425A publication Critical patent/JPS60242425A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

PURPOSE:To obtain an imaging device for which a liquid crystal micro-optical shutter array having high imaging quality and high speed imaging performance at a low cost is used by specifying the aperture angle of a convergent optical fiber array in a light signal generating part. CONSTITUTION:The light from a halogen lamp 201 which is a white spot light source is diverged by a diffusion plate 203 and a concave lens 204 and is averaged by a circular cylindrical-faced reflecting mirror 205. The averaged light is made incident on a fiber bundle 206 which is a spot light source-linear light source conversion optical system. The light energy past the liquid crystal micro- shutter array 207 is imaged onto a photosensitive body 209 by the near parabolic optical fiber array 208 having <=10 deg. aperture angle. The convergent optical fiber array having <=10 deg. aperture angle which is used for a copying machine is thus made usable and the reduction in cost is made possible without sacrificing the printing speed and imaging quality.

Description

【発明の詳細な説明】 〔技術分野〕 本発明は、光信号発生部ン有する印写装置、より詳しく
は液晶マイクロ光シヤツターアレイを用いた印写装置に
おける光線光学系及び結像光学系に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a printing device having an optical signal generating section, and more particularly to a light beam optical system and an imaging optical system in a printing device using a liquid crystal micro-optical shutter array. .

〔従来技術〕[Prior art]

従来の光信号発生部を有する目コ写装置である液晶マイ
クロジャツタ−アレイ乞用いたＬＯＳプリンターは、単
色光源と色収差は太きいが等価ＦＡが小さな大開口角を
有する集束性光ファイバーアレイ、１例を上げれは開口
角２０度共役長１７簡との組脅せにより、必要な光エネ
ルギー及びＭＴＦ特性を得るものであった。単色光源と
しては、単色発光のケイ光ランプ、白熱ラングとフィル
ターの組合せ、乞用いた例かある。ケイ光ランプを用い
た場合、点燈直後の立上がり特性、エージング特性が悪
いため、輝度コントローラー、温度コントローラー、ヒ
ーター、専用ファンなどか必要であり高価であるという
問題があった。第１図にケイ光ランプを使用した光信号
発生部の略全構成乞示す。また白熱ラングとフィルター
の組合せを用いた場付、バンドパス特性Ｙ：［ｆる干渉
フィルターは高価であり、吸収タイプのフィルターは、
不必要な吸収による透過率の低さ、熱吸収による破損の
ｒｒＩＪ順があり、安価で高透過率であり耐熱性を有す
るフィルター乞得ることか困難であるという問題かあっ
た。さらに、商−角の大きな集束性光ファイバーアレイ
は、複写後に使用されている開口角１０度以下の奉束性
元ファイバーアレ・［に比べ、量産効呆か少なく高価で
あり、また焦点深度も浅く組立てすらいという問題点が
あった。A LOS printer that uses a liquid crystal microjutter array, which is a conventional optical copying device with an optical signal generator, uses a monochromatic light source and a convergent optical fiber array that has a large aperture angle with large chromatic aberration but small equivalent FA. The required optical energy and MTF characteristics were obtained by combining the aperture angle of 20 degrees and the conjugate length of 17 strips. Examples of monochromatic light sources include monochromatic fluorescent lamps and combinations of incandescent Langs and filters. When fluorescent lamps are used, they have poor start-up characteristics and aging characteristics immediately after lighting, and therefore require brightness controllers, temperature controllers, heaters, dedicated fans, etc., and are expensive. FIG. 1 shows approximately the entire configuration of an optical signal generating section using a fluorescent lamp. In addition, when using a combination of an incandescent Lang and a filter, bandpass characteristics Y: [f] Interference filters are expensive, and absorption type filters are
There is a problem of low transmittance due to unnecessary absorption and damage due to heat absorption, and it is difficult to obtain a filter that is inexpensive, has high transmittance, and is heat resistant. Furthermore, convergent optical fiber arrays with large quotient angles are less efficient in mass production, less expensive, and shallower in depth of focus than convergent original fiber arrays with aperture angles of 10 degrees or less that are used after copying. The problem was that it was difficult to assemble.

〔目的〕〔the purpose〕

本発明はこのようなＩｆ、’］八へを解決するもので、
その目的とするところは、安価にて高印写品質、高速印
写性能ン有する印写装置ン提供することにある。The present invention solves such If,' ]8,
The purpose is to provide a printing device that is inexpensive, has high printing quality, and has high speed printing performance.

〔概要〕 本発明の印写装置は、白色点光源、集光光学系、平均化
光学系、点光源−線光源変換光学系、マイクロ光シヤツ
ターアレイ、集束性光ファイバーアレイを有する光信号
発生部を有し、該集束性光ファイバープレイの開口角は
１０度以内であることを％徴とし、さらには、該白色点
光源はノ・ロゲンランプであり、該点光源−線光源変換
光学系はプラスチック光ファイバーバノドルであり、該
マイク口元シャッターアレイは液晶マイクロ光シヤツタ
ーアレイであり、該平均化光学系は、拡散面、凹レンズ
、円柱面反射鏡により構成されることを特徴とする。[Summary] The printing apparatus of the present invention includes an optical signal generating section having a white point light source, a focusing optical system, an averaging optical system, a point light source-line light source conversion optical system, a micro optical shutter array, and a focusing optical fiber array. and the aperture angle of the focusing optical fiber play is within 10 degrees; furthermore, the white point light source is a Norogen lamp, and the point light source-line light source conversion optical system is a plastic optical fiber. The microphone mouth shutter array is a liquid crystal micro optical shutter array, and the averaging optical system is characterized by comprising a diffusing surface, a concave lens, and a cylindrical reflecting mirror.

〔実施例〕〔Example〕

以下本発明について実施例に基づき詳細に説明する。 The present invention will be described in detail below based on examples.

第２図は本発明における印写装置の光信号発生部の実施
例である。白色点光源である１２Ｖ１００Ｗのハロゲン
ランク２０１より発せられた光エネルギーは、集光光学
系である凹面鋭２０２により拡散板２０５、凹レンズ２
０４の近傍に集光される。拡散板２０５により拡散され
た光エネルギーは凹レンズ２０４によりさらに発散させ
られ、円柱面反射鏡２０５ＶＣ，入射し伝達される。こ
の時、光エネルギーは、円柱面反射鏡２０５の射出口に
おいて平均化され、ファイバーバンドル２０６の開口角
内で評価した輝度ムラか減ぜられて、点光源−線光源変
換光学系であるファイバーバンドル２０６に入射てる。FIG. 2 shows an embodiment of the optical signal generating section of the printing apparatus according to the present invention. The light energy emitted from the 12V 100W halogen rank 201, which is a white point light source, is transmitted through a concave sharp 202, which is a condensing optical system, to a diffuser plate 205 and a concave lens 2.
The light is focused near 04. The light energy diffused by the diffuser plate 205 is further diverged by the concave lens 204, and then enters and is transmitted to the cylindrical reflecting mirror 205VC. At this time, the light energy is averaged at the exit of the cylindrical reflector 205, and the brightness unevenness evaluated within the aperture angle of the fiber bundle 206 is reduced. It is incident on 206.

ファイバーバンドルは、多数の光ファイバーの一方を集
束し、−万を線状に配夕１」シた構造を／にするもので
、その例を第３図に示す。以上により造られた均−乞蛛
状光源により、液晶マイクロシャッターアレイ２０７を
照明する。准晶マイクロシャッター２０７は、少なくと
も１本の共−Ｊｆ！ｉ電極ｙ！１′備えるガラス基板と
複数個の信号電＠ｉを備えるガラス基板を対向させその
間に液晶組成物を封入して成る液晶パネルの両１Ｍ＋１
に２枚の偏光板を備え、かつ上記液晶組成物は誘屯典万
性かゼロになる交差周波数（以下ｆｃと略す）が常温で
１００ＫＨｚ以下であるネマチック液晶に光学活性物質
を雄刃ａしてなる液晶組成物であり、さらに上記共通電
極と上記信号を極の間に、ｆｃより高い周波ａ（以下ｆ
ｈと略″ｆ）の１’ｊＸ肴〉ｆ（！　）す４ＰｒＬｚ　
１ｉｊｌ　姑１＃　／　ＩＪ　Ｔ／　７　Ｌ　、ｈ丁）
の信号を印写する如く構成されており、従来の７ｗ型（
ツイストネマチック）ｇ晶装置と比較して、数１０倍早
い、５００Ｈｚの繰り返し周波数で安定したシャッター
動作を笑現している。液晶マイクロ’／ヤッターアレイ
２０７’４通過した光エネルギーは、開口角９度、共役
長４８簡の集束性光ファイバーアレイ２０８により、感
光体２０９上に結像する。第４図に実施例に使用した集
束性光ファイバープレイの色収差を従来差として使用し
ていた開口角２０度共役長１７．の場合と比較して示す
。A fiber bundle has a structure in which one side of a large number of optical fibers is bundled and arranged in a linear manner, and an example thereof is shown in FIG. The liquid crystal micro-shutter array 207 is illuminated by the uniform spider-like light source created as described above. The quasi-crystalline microshutter 207 has at least one co-Jf! i electrode y! 1M+1 of a liquid crystal panel comprising a glass substrate provided with 1' and a glass substrate provided with a plurality of signal electrodes facing each other and a liquid crystal composition sealed between them.
is equipped with two polarizing plates, and the liquid crystal composition is a nematic liquid crystal whose cross frequency (hereinafter abbreviated as fc) at which the conductivity is universal or zero is 100 KHz or less at room temperature, and an optically active substance is added to the nematic liquid crystal. Further, between the common electrode and the signal pole, a frequency a higher than fc (hereinafter f
h and abbreviation "f) 1'jX appetizer〉f(!)su4PrLz
1ijl mother-in-law 1# / IJ T/ 7 L, h ding)
It is configured to print the signal of the conventional 7W type (
Compared to twisted nematic (G) crystal devices, it achieves stable shutter operation at a repetition frequency of 500Hz, which is several ten times faster. The light energy that has passed through the liquid crystal micro'/Yatter array 207'4 is imaged onto a photoreceptor 209 by a convergent optical fiber array 208 with an aperture angle of 9 degrees and a conjugate length of 48 fibers. FIG. 4 shows the chromatic aberration of the convergent optical fiber play used in the example, which was conventionally used as a difference in aperture angle 20 degrees and conjugate length 17. The following shows a comparison with the case of .

５５９　ｎｍのベストフォーカス面における各波長での
Ｍ　Ｔ　Ｋｇ性（５ｔｐ／■）である。この時性により
、白色光源においても十分なＭＴに特性が得られた。ま
た第５（８）に集魚深度特性を従来例と比較して示す。This is the M T Kg property (5tp/■) at each wavelength at the best focus plane of 559 nm. Due to this temporality, sufficient MT characteristics were obtained even with a white light source. In addition, the fifth (8) shows the fish collection depth characteristics in comparison with the conventional example.

この特性により組立コストを下げることができた。この
よう忙して造られた感光体２０９上の潜像を、静電写真
プロセスを用いて印写することＫより、高速にて、筒品
質な印写を得ることができた。This characteristic made it possible to lower assembly costs. By printing the latent image on the photoreceptor 209, which was produced in this way, using an electrostatic photographic process, it was possible to obtain a cylinder-quality print at high speed.

〔効果〕〔effect〕

以上述べたように本発明によれば、安価で組立コストも
かからない集束性光ファイバーアレイが使用でき、印字
速度、印写品質を犠牲にすることな（コストダウンかで
きるという効果を有する。As described above, according to the present invention, it is possible to use a convergent optical fiber array that is inexpensive and requires no assembly cost, and has the effect of reducing costs without sacrificing printing speed or printing quality.

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

第１図は従来の光信号発生部の略全構成乞示す。 第２図に本発明における照光諒−巌光源変換光学系を示
す。 第６図に本発明おけるプラスチック光フアイバーバンド
ルの例を示す。 第４図に本発明における集束性光ファイバープレイの色
収差の例ン従来例と比較して示す。 第５図に本発明における集束性光ファイバーアレイの焦
点深度の例を従来例と比較して示す。 １０１・・・アパーチャ型ケイ元ランプ１０２・・・碑
党用部相 １０６・・・アイクロ光シヤツターアレイ１０４・・・
集束性光ファイバーアレイ１０５・・・輝度センサー １０６・・・輝度コントローラー １０７・・・温度センサー　１０８・・・ヒーター１０
９・・・ファン　１１０・・・温度コントローラー１１
１・・・シール部　２０１・・・白色点光源２０２・・
・集光光字系　２０６・・・拡散板２０４・・・凹レン
ズ　２０５・・・円柱面反射鏡２０６・・・グラスチッ
ク光ファイバーツくンドル２０７・・・マイクロ光シロ
ツターアレイ２０８・・・集束性光ファイバーアレイ２
０９・・・感光体 ４０１・・・本発明における集束性光ファイノく−アレ
イの色収差 ４０２・・・従来例における集束性光ファイノく−アレ
イの色収差 ５０１・・・本発明における集束性光ファイノ（−プレ
イの焦点深度 ５０２・・・従来例における集束性光ファイノく−アレ
イの焦点深度。 ０ｂ 第１図 第２図 第３図 第４図FIG. 1 shows substantially the entire configuration of a conventional optical signal generator. FIG. 2 shows the illumination light source-to-Iwa light source conversion optical system according to the present invention. FIG. 6 shows an example of a plastic optical fiber bundle according to the present invention. FIG. 4 shows an example of chromatic aberration of the converging optical fiber play according to the present invention in comparison with a conventional example. FIG. 5 shows an example of the depth of focus of the convergent optical fiber array according to the present invention in comparison with a conventional example. 101... Aperture type light source lamp 102... Part for monument 106... Eye black light shutter array 104...
Focusing optical fiber array 105...Brightness sensor 106...Brightness controller 107...Temperature sensor 108...Heater 10
9...Fan 110...Temperature controller 11
1... Seal part 201... White point light source 202...
・Condensing optical system 206...Diffusion plate 204...Concave lens 205...Cylindrical surface reflecting mirror 206...Glasstic optical fiber bundle 207...Micro optical shield array 208...Focusing property Optical fiber array 2
09... Photoreceptor 401... Chromatic aberration of the focusing optical fiber array in the present invention 402... Chromatic aberration of the focusing optical fiber array in the conventional example 501... Focusing optical fiber in the present invention ( - Depth of focus of the play 502... Depth of focus of the focusing optical fiber array in the conventional example. 0b Fig. 1 Fig. 2 Fig. 3 Fig. 4

Claims (1)

【特許請求の範囲】 １）光信号発生部を有する印写装置において、該光信号
発生部は、白色点光源、来光光学系、平均化光学系、点
光源−線光源変侠光学系、マイクロ光シヤツターアレイ
、東束性元ファイバーアレイを有し、該集束性光ファイ
バーアレイの開口角は１０度以内であること乞特徴とす
る印写装置。 ２）該白色点光源はハロゲンラングであり、評点光源−
脚光源変換光学系はプラスチック元ファイバーバンドル
（以下ファイア＜　７Ｚンドルと略ｆ）であり、該マイ
クロ光シヤツターアレイは液晶マイクロ光シヤツターア
レイであることを特徴とする特許請求の範囲第１項記載
の印写装置。 ３）該平均化光学系は、拡散面、凹レンズ、円柱面反射
鏡により構成されることを特徴とする特許請求の範囲第
１項記載の印写装置。[Scope of Claims] 1) In a printing device having an optical signal generating section, the optical signal generating section includes a white point light source, a light coming optical system, an averaging optical system, a point light source-line light source variable optical system, 1. A printing device comprising a micro optical shutter array and a focusing optical fiber array, wherein the aperture angle of the focusing optical fiber array is within 10 degrees. 2) The white point light source is a halogen lamp, and the point light source -
Claim 1, wherein the leg light source conversion optical system is a plastic fiber bundle (hereinafter referred to as fire < 7Z bundle), and the micro optical shutter array is a liquid crystal micro optical shutter array. The printing device described. 3) The printing apparatus according to claim 1, wherein the averaging optical system includes a diffusing surface, a concave lens, and a cylindrical reflecting mirror.
JP59098973A 1984-05-17 1984-05-17 Imaging device Pending JPS60242425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59098973A JPS60242425A (en) 1984-05-17 1984-05-17 Imaging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59098973A JPS60242425A (en) 1984-05-17 1984-05-17 Imaging device

Publications (1)

Publication Number Publication Date
JPS60242425A true JPS60242425A (en) 1985-12-02

Family

ID=14233975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59098973A Pending JPS60242425A (en) 1984-05-17 1984-05-17 Imaging device

Country Status (1)

Country Link
JP (1) JPS60242425A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271956A2 (en) * 1986-12-17 1988-06-22 Philips Electronics Uk Limited A liquid crystal display illumination system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271956A2 (en) * 1986-12-17 1988-06-22 Philips Electronics Uk Limited A liquid crystal display illumination system

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