JPH01152406A - Collimating device - Google Patents
Collimating deviceInfo
- Publication number
- JPH01152406A JPH01152406A JP31149687A JP31149687A JPH01152406A JP H01152406 A JPH01152406 A JP H01152406A JP 31149687 A JP31149687 A JP 31149687A JP 31149687 A JP31149687 A JP 31149687A JP H01152406 A JPH01152406 A JP H01152406A
- Authority
- JP
- Japan
- Prior art keywords
- holding member
- lens system
- lens
- lens holding
- optical axis
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 27
- 239000011295 pitch Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241000244317 Tillandsia usneoides Species 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- Lens Barrels (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はレーザビームプリンター及びレーザー光等を扱
うコリメート装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a laser beam printer and a collimating device that handles laser light and the like.
従来の技術
近年、上記産業上の利用分野において、レーザー特に半
導体レーザーを用いる場合、発振素子からのレーザー光
は発散光であるため、レーザー発３ヘー、′
振をする光源とレンズ系とからなるコリメート装置によ
り発散光を一旦千行光に変えその後集束させて利用する
場合が多くなってきた。BACKGROUND OF THE INVENTION In recent years, when lasers, especially semiconductor lasers, are used in the above-mentioned industrial fields of application, the laser light from the oscillation element is diverging light. Increasingly, a collimating device is used to convert diverging light into a thousand lines of light, which is then focused.
従来のこの種のコリメート装置は、第４図のような構造
になっていた。A conventional collimating device of this type had a structure as shown in FIG.
すなわち壬ニット保持部材１はレンズガイド部材１ａと
光源取付部材１ｂで構成され、発光光源２が光源取付部
材１ｂに取付られている。レンズ系３はレンズ保持部材
４に固定されており、レンズ保持部材４に設けられたお
ねじ状螺旋部とレンズガイド部材１１Ｌに設けられため
ねじ状螺旋部を介してレンズ保持部材４を回転させるこ
とにより、レンズ保持部材４を矢印ａの方向へ移動させ
る。That is, the knit holding member 1 is composed of a lens guide member 1a and a light source mounting member 1b, and the light emitting light source 2 is mounted on the light source mounting member 1b. The lens system 3 is fixed to the lens holding member 4, and the lens holding member 4 is rotated via the male threaded spiral portion provided on the lens holding member 4 and the female threaded spiral portion provided on the lens guide member 11L. As a result, the lens holding member 4 is moved in the direction of arrow a.
これによりレンズ系３と発光光源２の間隔を変化させる
ことができ、点光源に近似した発光光源からの発散光を
コリメート化するようになっている。This allows the distance between the lens system 3 and the light emitting source 2 to be changed, and the diverging light from the light emitting source that approximates a point light source to be collimated.
発明が解決しようとする問題点
しかし、このような構造のものではねじ状螺旋部のピン
チをＰとすると、レンズ保持部材４を螺旋部に沿って１
回転させると矢印ａ方向へＰたけレンズ保持部材４が移
動する。従って、回転角１゜当りのレンズ保持部材の移
動量は（Ｐ／３６（１）でありＰの値から１μｍ前後の
数値となる。一方、レンズ系３と発光光源２との距離は
普通ミクロン単位で間隔調整を行っている。従って、レ
ンズ保持部材４の回転位置決め精度も１°以下と言うこ
とになる。また、前記のような構成ではレンズ系の持つ
光軸偏心の影響で、レンズ保持部材４を前記螺旋部に沿
って回転させた場合レンズ系光軸と発光光源の廃光点の
位置関係が回転に従って変化するためレンズ系から射出
する光線の光軸も回転に従って変化するという欠点を有
しており、従って前記間隔調整を行う場合多くの時間と
労力を費やすか高精度かつ高価な設備を導入することに
よりコリメート化を可能にしていた。Problems to be Solved by the Invention However, in such a structure, if the pinch of the threaded spiral portion is P, then the lens holding member 4 can be moved along the spiral portion once.
When rotated, the lens holding member 4 moves by an amount P in the direction of arrow a. Therefore, the amount of movement of the lens holding member per 1 degree of rotation angle is (P/36 (1), which is a value around 1 μm from the value of P. On the other hand, the distance between the lens system 3 and the light emitting source 2 is usually micrometers. The interval is adjusted in units of units.Therefore, the rotational positioning accuracy of the lens holding member 4 is also 1 degree or less.In addition, in the above configuration, due to the optical axis eccentricity of the lens system, the lens holding member 4 When the member 4 is rotated along the spiral portion, the positional relationship between the optical axis of the lens system and the waste light point of the light emitting light source changes with the rotation, so the optical axis of the light beam emitted from the lens system also changes with the rotation. Therefore, when adjusting the distance, collimation is made possible by spending a lot of time and effort or by introducing highly accurate and expensive equipment.
そこで、本発明はレンズ系と発光光源との間隔調整の精
度を上げ、調整時間の短縮を行うとともに、し１ンズ系
の回転移動によるレンズ系光軸の変化をなくすようにす
るものである。Accordingly, the present invention aims to improve the accuracy of adjusting the distance between the lens system and the light emitting source, shorten the adjustment time, and eliminate changes in the optical axis of the lens system due to rotational movement of the lens system.
問題点を解決するだめの手段
５ヘーノ′
そして上記問題点を解決するため本発明は、レンズ保持
部材にレンズ系光軸と直角方向にＶ溝もしくはテーパ穴
を設け、ユニット保持部材にレンズ系光軸と直角方向に
めねじ状螺旋部を設け、おねじ状螺旋部を有しユニット
保持部材のめねじ状螺旋部に沿って移動可能で且つその
先端もしくは先端近傍がレンズ保持部材のＶ溝もしくは
テーパ穴の傾斜面に接するようにレンズ保持部位置調整
部材を配設するものである。Means to Solve the Problem 5 Heno' To solve the above problem, the present invention provides a V-groove or a tapered hole in a direction perpendicular to the optical axis of the lens system in the lens holding member, so that the lens system light can be inserted into the unit holding member. A female thread-like spiral part is provided in a direction perpendicular to the axis, and a male thread-like spiral part is movable along the female thread-like spiral part of the unit holding member, and the tip or the vicinity of the tip is in the V groove of the lens holding member or A lens holding portion position adjusting member is disposed so as to be in contact with the inclined surface of the tapered hole.
作用
本発明によればレンズ保持部位置調整部材を前記ユニッ
ト保持部材のめねじ状螺旋部に沿って回転移動させ、レ
ンズ保持部材に設けられたＶ溝もしくはテーパ穴の傾斜
面とレンズ保持部位置調整部材の先端もしくは先端近傍
との接触点を傾斜面に沿って変化させることにより、ユ
ニット保持部材に対するレンズ保持部材のレンズ系光軸
と平行な方向の位置を変化させることができる。従って
、レンズ保持部材に保持されたレンズ系とユニット・保
持部材に保持された発光光源とのレンズ系光軸６ベーノ
方向の間隔を変化させることができる。この時、ねじ状
螺旋部のピッチ６ｐとし、■溝もしくはテーパ穴の傾斜
面のレンズ系光軸に対する傾斜角をθとすると、レンズ
保持部位置調整部材を角度α回転させた場合のレンズ保
持部材のレンズ光軸方向への移動量ｄは、ｄ＝ＰＸα／
（３６０Ｘｔａｎθ）となり、θを４６°以上にと９ピ
ツチＰを同一とすれば、従来のレンズ系と発光光源との
間隔調整量の１７ｔａｎθ倍の調整精度を得ることがで
きるようになる。また、レンズ保持部材即ちレンズ系が
回転しないので、レンズ系光軸と発光光源の発光点との
光軸と垂直方向の位置関係が変化しないことになる。According to the present invention, the lens holding part position adjusting member is rotated and moved along the internal threaded spiral part of the unit holding member, and the lens holding part position is adjusted between the inclined surface of the V groove or the tapered hole provided in the lens holding member and the lens holding part position. By changing the point of contact with the tip or the vicinity of the tip of the adjustment member along the inclined surface, the position of the lens holding member relative to the unit holding member in a direction parallel to the optical axis of the lens system can be changed. Therefore, the distance between the lens system held by the lens holding member and the light emitting source held by the unit/holding member in the direction of the lens system optical axis 6 can be changed. At this time, if the pitch of the threaded spiral part is 6p, and the angle of inclination of the inclined surface of the groove or tapered hole with respect to the optical axis of the lens system is θ, then the lens holding member when the lens holding part position adjustment member is rotated by an angle α The amount of movement d in the lens optical axis direction is d=PXα/
(360X tan θ), and if θ is set to 46° or more and the 9 pitches P are the same, it becomes possible to obtain an adjustment accuracy that is 17 tan θ times the distance adjustment amount between the conventional lens system and the light emitting light source. Further, since the lens holding member, that is, the lens system does not rotate, the positional relationship between the optical axis of the lens system and the light emitting point of the light emitting source in the direction perpendicular to the optical axis does not change.
実施例
以下、本発明の一実施例を添付図面にもとづいて説明す
る。Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.
第１図において、６は円筒状もしくは角筒状の部分を有
するユニット保持部材で、内部に円形もしくは矩形の貫
通もしくは一端が絞られたガイド穴６を有し、レンズ保
持部材７がガイド穴６内を７ベーノ
移動自在に取り付けられている。８は点光源に近似した
発光光源で、ユニット保持部材の一端に固定されている
。９はレンズ系でレンズ保持部材７に固定されている。In FIG. 1, reference numeral 6 denotes a unit holding member having a cylindrical or rectangular tube-like portion, and has a circular or rectangular guide hole 6 which is penetrated or constricted at one end. It is attached so that it can be moved freely by 7 vanes inside. Reference numeral 8 denotes a light emitting source similar to a point light source, which is fixed to one end of the unit holding member. A lens system 9 is fixed to the lens holding member 7.
レンズ保持部材７にはレンズ系光軸と直角方向にＶ溝も
しくはテーパ穴１０ｉ設け、ユニット保持部材５にレン
ズ系光軸と直角方向にめねじ状螺旋部１１を設け、おね
じ状螺旋部１２を有し前記ユニット保持部材６のめねじ
状螺旋部１１に沿って移動可能で且つその先端もしくは
先端近傍が前記レンズ保持部材子のＶ溝もしくはテーパ
穴１ｏの傾斜面に接するようにレンズ保持部位置調整部
材１３を配設する。その詳細は第２図に示している。１
４は抑圧バネで、レンズ保持部材７に対してガイド穴６
の軸方向に常に力を加えており、そのためレンズ保持部
材７のＶ溝もしくはテーパ穴１ｏの傾斜面とレンズ保持
部位置調整部材１３の先端もしくは先端近傍は常に接し
ている。The lens holding member 7 is provided with a V groove or a tapered hole 10i in a direction perpendicular to the optical axis of the lens system, and the unit holding member 5 is provided with a female thread-like spiral portion 11 in a direction perpendicular to the lens system optical axis, and a male thread-like spiral portion 12 is provided. A lens holding portion that is movable along the female thread-like spiral portion 11 of the unit holding member 6 and such that its tip or the vicinity of the tip is in contact with the V groove of the lens holding member component or the inclined surface of the tapered hole 1o. A position adjustment member 13 is provided. The details are shown in FIG. 1
Reference numeral 4 denotes a suppression spring, which is inserted into the guide hole 6 with respect to the lens holding member 7.
Therefore, the V-groove of the lens holding member 7 or the inclined surface of the tapered hole 1o and the tip or the vicinity of the tip of the lens holding portion position adjustment member 13 are always in contact with each other.
次にこの一実施例の構成における動作を説明する。Next, the operation of the configuration of this embodiment will be explained.
まず、レンズ保持部位置調整部材１３をユニット保持部
材６のめねじ状螺旋部１１に沿って第２図矢印すの方向
に回転移動させると、前記レンズ保持部材７に設けられ
たＶ溝もしくはテーパ穴１ｏの傾斜面とレンズ保持部位
置調整部材１３の先端もしくは先端近傍との接触点が前
記傾斜面に沿って変化し、その結果ユニット保持部材６
に対するレンズ保持部材７のレンズ系光軸と平行な方向
の位置を矢印Ｃの方向に移動させることができ図中破線
の状態になる。また、レンズ保持部位置調整部材１３’
１ｉｉ−矢印すの反対方向へ回転移動させると、レンズ
保持部材７は矢印Ｃの反対方向へ移動することに々る。First, when the lens holding part position adjustment member 13 is rotated in the direction of the arrow in FIG. The point of contact between the inclined surface of the hole 1o and the tip or the vicinity of the tip of the lens holding part position adjustment member 13 changes along the inclined surface, and as a result, the unit holding member 6
The position of the lens holding member 7 in the direction parallel to the optical axis of the lens system can be moved in the direction of arrow C, resulting in the state shown by the broken line in the figure. In addition, the lens holding portion position adjustment member 13'
1ii- When the lens holding member 7 is rotated in the direction opposite to the arrow C, the lens holding member 7 often moves in the opposite direction to the arrow C.
従って、レンズ保持部材７に保持されたレンズ系９とユ
ニット保持部材５に取付られた発光光源８とのレンズ系
光軸方向の間隔を変化させることができる。この時、ね
じ状螺旋部のピッチをＰとし、Ｖ溝もしくはテーパ穴の
傾斜面のレンズ系光軸に対する傾斜角をθとすると、レ
ンズ保持部位置調整部材１３を角度α回転させた場合の
レンズ保持部材７のレンズ光軸方向への９ベーノ
移動量ｄは、ｅｉ ＝ Ｐ Ｘ ａ ／ （３６０Ｘ
ｔ ！Ｌ ｎθ）となり、θを４５°以上にとクビッテ
Ｐを同一とすれば、従来のレンズ系と発光光源との間隔
調整量の１７ｔａｎθ倍の調整精度を得ることができる
ようになる。Therefore, the distance between the lens system 9 held by the lens holding member 7 and the light emitting source 8 attached to the unit holding member 5 in the lens system optical axis direction can be changed. At this time, if the pitch of the threaded spiral part is P, and the angle of inclination of the inclined surface of the V groove or tapered hole with respect to the optical axis of the lens system is θ, then the lens when the lens holder position adjustment member 13 is rotated by an angle α The amount of movement d of the holding member 7 in the lens optical axis direction is ei = P X a / (360X
T! L nθ), and if θ is set to 45° or more and Kvitte P is the same, it becomes possible to obtain an adjustment accuracy that is 17 tanθ times the distance adjustment amount between the conventional lens system and the light emitting light source.
次に本発明の他の実施例について説明する。Next, other embodiments of the present invention will be described.
第３図は他の実施例を示しており、この実施例では、前
記レンズ保持部材７をスライド部材１５とガイド部材１
６の少なくとも２個の部材で構成し、スライド部材１５
にレンズ系光軸と互角方向ＫＶ溝もしくはテーパ穴１７
を設け、ガイド部材１６にレンズ系光軸と直角方向にめ
ねじ状螺旋部１８を設け、おねじ状螺旋ｓを有し前記ガ
イド部材１６のめねじ状螺旋部１８に沿っそ移動可能で
、且つその先端もしくは先端近傍が前記スライド部材１
５のＶ溝もしくはテーパ穴１７の傾斜面に接するように
配設されたスライド部位置調整部材１９によって、前記
発光光源８とレンズ系９との位置関係を変化させ得るよ
うにし、前記ユニット保持部材とレンズ保持部材による
発光光源との間１０ページ
隔調整と、スライド部材とガイド部材による発光光源と
の間隔調整のどちらか一方を粗調整として他方を微調整
として使用するようにしたものである。FIG. 3 shows another embodiment, in which the lens holding member 7 is connected to a slide member 15 and a guide member 1.
6, the slide member 15
KV groove or tapered hole 17 in the direction perpendicular to the optical axis of the lens system.
, the guide member 16 is provided with a female thread-like spiral portion 18 in a direction perpendicular to the optical axis of the lens system, and has a male thread-like spiral s and is movable along the female thread-like spiral portion 18 of the guide member 16; And the tip or the vicinity of the tip is the slide member 1.
The positional relationship between the light emitting light source 8 and the lens system 9 can be changed by a sliding part position adjusting member 19 disposed so as to be in contact with the V groove of No. 5 or the inclined surface of the tapered hole 17, and the unit holding member Either one of adjusting the 10-page interval between the light emitting light source and the light emitting source using the lens holding member and adjusting the distance between the light emitting light source and the light emitting source using the slide member and the guide member is used as a coarse adjustment, and the other is used as a fine adjustment.
なお、上記実施例においてユニット保持部材を、前記従
来例で説明したごとく複数の部材で構成してもよい。ま
た、上記実施例におけるＶ溝は、上記該当部材の外周部
全体にわたるものであっても、一部分に設けられたもの
であってもかまわない。In the above embodiment, the unit holding member may be composed of a plurality of members as described in the conventional example. Furthermore, the V-groove in the above embodiment may extend over the entire outer circumferential portion of the corresponding member or may be provided in a portion thereof.
発明の効果
本発明は、発散光のコリメート化を行うために発光光源
とレンズ系の間隔全調整するためのものであり、レンズ
保持部材に設けたＶ溝もしくはテーパ穴の傾斜面の傾斜
角度を任意に選ぶことにより、所要の間隔調整精度を得
ることができる。また、レンズ保持部材即ちレンズ系が
回転しないので、レンズ系光軸と発光光源の発光点との
光軸と垂直方向の位置関係が変化しないという効果もあ
り、これにより発散光のコリメート化の精度を向上させ
調整時間の短縮をはかることができるとと１１ベージ
もに、高精度かつ高価な設備を必要とせず、簡単々構造
で所要の目的を達することができる。Effects of the Invention The present invention is for fully adjusting the distance between the light emitting source and the lens system in order to collimate the diverging light. By arbitrarily selecting it, the required spacing adjustment accuracy can be obtained. In addition, since the lens holding member, that is, the lens system, does not rotate, there is an effect that the positional relationship between the optical axis of the lens system and the light emitting point of the light emitting source in the direction perpendicular to the optical axis does not change. It is possible to improve the accuracy and shorten the adjustment time, and the required purpose can be achieved with a simple structure without requiring high precision and expensive equipment.
第１図は本発明の一実施例によるコリメート装置の縦断
面図、第２図は同装置の要部拡大縦断面図、第３図は本
発明の他の実施例のコリメート装置の縦断面図、第４図
は従来のコリメート装置の縦断面図である。
５・・・・・・ユニット保持部材、６・・・・・・ガイ
ド穴、７・・・・・・レンズ保持部材、８・・・・・・
発光光源、９・・・・・・レンズ系、１ｏ・・・・・・
Ｖ溝もしくはテーパ穴、１１・・・・・・めねじ状螺旋
部、１２・・・・・・おねじ状螺旋部、１３・・・・・
・レンズ保持部位置調整部材、１４・・・・・・押圧バ
ネ、１５・・・・・・スライド部材、１６・・・・・・
ガイド部材、１７・・・・・・Ｖ溝もしくはテーパ穴、
１８・・・・・・めねじ状螺旋部、１９・・・・・・ス
ライド部位置調整部材。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名：ｊ
ｌｊｊｌｊｌ
ＬＱ’−０（”−００ンＱカ 寸
（ｋｚ
−コ −コ
臭刷FIG. 1 is a vertical cross-sectional view of a collimating device according to an embodiment of the present invention, FIG. 2 is an enlarged vertical cross-sectional view of the main part of the same device, and FIG. 3 is a vertical cross-sectional view of a collimating device according to another embodiment of the present invention. , FIG. 4 is a longitudinal sectional view of a conventional collimating device. 5... Unit holding member, 6... Guide hole, 7... Lens holding member, 8...
Light emitting source, 9...Lens system, 1o...
V groove or tapered hole, 11...Female threaded spiral part, 12... Male threaded spiral part, 13...
・Lens holding part position adjustment member, 14... Pressing spring, 15... Slide member, 16...
Guide member, 17...V groove or tapered hole,
18...Female threaded spiral portion, 19...Sliding portion position adjustment member. Name of agent: Patent attorney Toshio Nakao and 1 other person: j
ljjljl LQ'-0("-00nQka size(kz -ko -ko odor printing
Claims (2)
面の少なくともどちらか一方で構成されるレンズ系と、
レンズ系を保持するレンズ保持部材と、レンズ保持部材
および前記発光光源とを保持する一体もしくは分割構成
のユニット保持部材とで構成され、前記レンズ保持部材
にレンズ系光軸と直角方向にＶ溝もしくはテーパ穴を設
け、前記ユニット保持部材にレンズ系光軸と直角方向に
めねじ状螺旋部を設け、おねじ状螺旋部を有し前記ユニ
ット保持部材のめねじ状螺旋部に沿って移動可能で、且
つその先端もしくは先端近傍が前記レンズ保持部材のＶ
溝もしくはテーパ穴の傾斜面に接するように配設された
レンズ保持部位置調整部材によって、前記発光光源とレ
ンズ系の位置関係を変化させ得るようにしたコリメート
装置。(1) A light emitting light source that approximates a point light source and a lens system that is composed of at least one of a spherical surface and an aspherical surface,
It is composed of a lens holding member that holds a lens system, and a unit holding member that holds the lens holding member and the light emitting light source and has an integral or split configuration, and the lens holding member has a V groove or a V groove in a direction perpendicular to the optical axis of the lens system. A tapered hole is provided, the unit holding member is provided with a female threaded spiral portion in a direction perpendicular to the optical axis of the lens system, and the unit holding member has a male threaded spiral portion and is movable along the female threaded spiral portion of the unit holding member. , and the tip or the vicinity of the tip is the V of the lens holding member.
A collimating device capable of changing the positional relationship between the light emitting source and the lens system by means of a lens holding part position adjusting member disposed so as to be in contact with the slope of the groove or the tapered hole.
の複数個の部材で構成し、スライド部材にレンズ系光軸
と直角方向にＶ溝もしくはテーパ穴を設け、ガイド部材
にレンズ系光軸と直角方向にめねじ状螺旋部を設け、お
ねじ状螺旋部を有し前記ガイド部材のめねじ状螺旋部に
沿って移動可能で、且つその先端もしくは先端近傍が前
記スライド部材のＶ溝もしくはテーパ穴の傾斜面に接す
るように配設されたスライド部位置調整部材によって、
前記発光光源とレンズ系の位置関係を変化させ得るよう
にした特許請求の範囲第１項記載のコリメート装置。(2) The lens holding member is composed of a plurality of members including a slide member and a guide member, the slide member is provided with a V groove or a tapered hole in a direction perpendicular to the optical axis of the lens system, and the guide member is provided with a V groove or a tapered hole perpendicular to the optical axis of the lens system. a female thread-like spiral part in the direction, a male thread-like spiral part, movable along the female thread-like spiral part of the guide member, and the tip or the vicinity of the tip of the guide member is provided with a V-groove or a tapered hole of the slide member. By the slide part position adjustment member arranged so as to be in contact with the inclined surface of
The collimating device according to claim 1, wherein the positional relationship between the light emitting source and the lens system can be changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31149687A JPH01152406A (en) | 1987-12-09 | 1987-12-09 | Collimating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31149687A JPH01152406A (en) | 1987-12-09 | 1987-12-09 | Collimating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01152406A true JPH01152406A (en) | 1989-06-14 |
Family
ID=18017928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31149687A Pending JPH01152406A (en) | 1987-12-09 | 1987-12-09 | Collimating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01152406A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01191813A (en) * | 1988-01-28 | 1989-08-01 | Fuji Xerox Co Ltd | Light source device |
| US6167182A (en) * | 1996-10-25 | 2000-12-26 | Omron Corporation | Surface light source device and liquid crystal display device, portable telephone and information terminal employing the surface light source device |
| JP2002296473A (en) * | 2001-03-29 | 2002-10-09 | Ricoh Opt Ind Co Ltd | Multi-beam source unit and optical scanner having the same |
| JP2007310067A (en) * | 2006-05-17 | 2007-11-29 | Olympus Corp | Centering mechanism |
| JP2008242465A (en) * | 2008-04-10 | 2008-10-09 | Ricoh Co Ltd | Light source apparatus, optical scanner and image forming apparatus |
| JP2009258299A (en) * | 2008-04-15 | 2009-11-05 | Namiki Precision Jewel Co Ltd | Lens actuator using tilting type displacement enlarging mechanism |
| JP2009294267A (en) * | 2008-06-02 | 2009-12-17 | Canon Inc | Lens device and image projection apparatus |
| JP2010008761A (en) * | 2008-06-27 | 2010-01-14 | Sharp Corp | Optical scanner and image-forming device equipped with the same |
| US8004552B2 (en) | 2008-06-27 | 2011-08-23 | Sharp Kabushiki Kaisha | Optical scanning device and image forming apparatus |
| JP2014157313A (en) * | 2013-02-18 | 2014-08-28 | Mitsutoyo Corp | Lens barrel and optical device using the same |
-
1987
- 1987-12-09 JP JP31149687A patent/JPH01152406A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01191813A (en) * | 1988-01-28 | 1989-08-01 | Fuji Xerox Co Ltd | Light source device |
| US6167182A (en) * | 1996-10-25 | 2000-12-26 | Omron Corporation | Surface light source device and liquid crystal display device, portable telephone and information terminal employing the surface light source device |
| JP2002296473A (en) * | 2001-03-29 | 2002-10-09 | Ricoh Opt Ind Co Ltd | Multi-beam source unit and optical scanner having the same |
| JP4739560B2 (en) * | 2001-03-29 | 2011-08-03 | リコー光学株式会社 | Multi-beam light source unit and optical scanning device having the same |
| JP2007310067A (en) * | 2006-05-17 | 2007-11-29 | Olympus Corp | Centering mechanism |
| JP4627087B2 (en) * | 2008-04-10 | 2011-02-09 | 株式会社リコー | Light source device, optical scanning device, and image forming apparatus |
| JP2008242465A (en) * | 2008-04-10 | 2008-10-09 | Ricoh Co Ltd | Light source apparatus, optical scanner and image forming apparatus |
| JP2009258299A (en) * | 2008-04-15 | 2009-11-05 | Namiki Precision Jewel Co Ltd | Lens actuator using tilting type displacement enlarging mechanism |
| JP2009294267A (en) * | 2008-06-02 | 2009-12-17 | Canon Inc | Lens device and image projection apparatus |
| JP2010008761A (en) * | 2008-06-27 | 2010-01-14 | Sharp Corp | Optical scanner and image-forming device equipped with the same |
| JP4565021B2 (en) * | 2008-06-27 | 2010-10-20 | シャープ株式会社 | Optical scanning device and image forming apparatus having the same |
| US8004552B2 (en) | 2008-06-27 | 2011-08-23 | Sharp Kabushiki Kaisha | Optical scanning device and image forming apparatus |
| JP2014157313A (en) * | 2013-02-18 | 2014-08-28 | Mitsutoyo Corp | Lens barrel and optical device using the same |
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