JPH0467008A - Laser scanner - Google Patents

Laser scanner

Info

Publication number
JPH0467008A
JPH0467008A JP17813090A JP17813090A JPH0467008A JP H0467008 A JPH0467008 A JP H0467008A JP 17813090 A JP17813090 A JP 17813090A JP 17813090 A JP17813090 A JP 17813090A JP H0467008 A JPH0467008 A JP H0467008A
Authority
JP
Japan
Prior art keywords
mirrors
mirror
reflecting surfaces
expensive
lens
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
JP17813090A
Other languages
Japanese (ja)
Inventor
Koichi Konuma
小沼　浩一
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP17813090A priority Critical patent/JPH0467008A/en
Publication of JPH0467008A publication Critical patent/JPH0467008A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To reduce the cost of the device without requiring a cylindrical lens nor expensive toroidal lens by providing two surfaces which reflect collimated light and an adjusting means which adjusts the reflecting surfaces so that scanning planes by the reflecting surfaces become equal. CONSTITUTION:The two mirrors 1 are fixed to a mirror base 2, which is fixed to a driving motor 3. The surface of the mirror 2 which is fitted to the driving motor 3 is long at right angles to the mirrors 1 and its one end is so structured as to adjust the gap 5 to the motor 3 with a screw 4 which is provided nearby. The two mirrors 1 are adjustable as shown by an arrow A and the angle to a rotary shaft for driving them is adjustable to a constant angle. Namely, the scanned surface by the two reflecting surfaces can be made equal. Consequently, neither the cylindrical lens nor the expensive toroidal lens is required, so the device cost is reducible.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はレーザ走査装置の回転多面鏡に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a rotating polygon mirror for a laser scanning device.

〔従来の技術〕[Conventional technology]

従来、この種のレーザ走査装置では、６面または８面の
回転多面鏡を用いてコリメート光を走査していた。この
回転多面鏡の各面の設定角度はそれぞれ１〜２分程度の
ばらつきを持っているため、シリンドリカルレンズとト
ロイダルレンズとを用いて像面上での走査位置の変動が
現れないように補正していた。Conventionally, this type of laser scanning device scans collimated light using a rotating polygon mirror with six or eight surfaces. Since the set angles of each surface of this rotating polygon mirror vary by about 1 to 2 minutes, a cylindrical lens and a toroidal lens are used to correct the fluctuations in the scanning position on the image plane. was.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来のレーザ走査装置は、シリンドリカルレン
ズや高価なトロイダルレンズが必要となるため、装置原
価の低減に対する妨げになっていた。The conventional laser scanning device described above requires a cylindrical lens or an expensive toroidal lens, which is an obstacle to reducing the cost of the device.

〔課組を解決するための手段〕[Means for resolving division issues]

本発明は、レーザ光源から光学系を介して照射されたコ
リメート光を反射する２つの面と、この２つの反射面に
よる走査面（走査位置）が等しくなるように調節可能な
調節手段を有する回転多面鏡より構成されている。The present invention provides a rotation system having two surfaces that reflect collimated light irradiated from a laser light source through an optical system, and an adjusting means that can be adjusted so that the scanning surfaces (scanning positions) by these two reflecting surfaces are equal. It is composed of polygon mirrors.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図（ａ）及び同図（ｂ）は本発明の一実施例を示す
側面図及び上面図である。第１図（ａ）及び同図（ｂ）
において、本発明の主要部である回転多面鏡は、ミラー
１．ミラーベース２．駆動モータ３及びねじ４からなり
、２つのミラー１にはレーザ光源から光学系（図示せず
）を介してコリメート光が照射され、この反射光は走査
面（図示せず）に照射される。また、２つのミラー１は
ミラーベース２に固定され、ミラーベース２は駆動モー
タ３に固定されている。ミラーベース２の駆動モータ３
に対する取付は面は、ミラー１に垂直に長い形状をして
おり、その一端は近傍にに設けたねじ４によって駆動モ
ータ３との間隙５を調節する構造となっている。これに
より、２つのミラー１を矢印Ａの方向に調節可能であっ
て、これを駆動する回転軸とのなす角度を一定に調節で
きる。即ち、２つの反射面による走査面を等しくするこ
とができる。FIGS. 1(a) and 1(b) are a side view and a top view showing one embodiment of the present invention. Figure 1(a) and Figure 1(b)
The rotating polygon mirror, which is the main part of the present invention, is mirror 1. Mirror base 2. Consisting of a drive motor 3 and screws 4, the two mirrors 1 are irradiated with collimated light from a laser light source via an optical system (not shown), and this reflected light is irradiated onto a scanning surface (not shown). Further, the two mirrors 1 are fixed to a mirror base 2, and the mirror base 2 is fixed to a drive motor 3. Drive motor 3 for mirror base 2
The mounting surface has a long shape perpendicular to the mirror 1, and one end thereof has a structure in which a gap 5 with the drive motor 3 is adjusted by a screw 4 provided near the mirror 1. Thereby, the two mirrors 1 can be adjusted in the direction of the arrow A, and the angle between them and the rotating shaft that drives them can be adjusted to a constant value. That is, the scanning planes of the two reflecting surfaces can be made equal.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明のレーザ走査装置によれば、
シリンドリカルレンズや高価なトロイダルレンズが不要
となるため、装置原価の低減に効果がある。As explained above, according to the laser scanning device of the present invention,
Since cylindrical lenses and expensive toroidal lenses are not required, it is effective in reducing equipment costs.

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

第１図（ａ）及び同図（ｂ）は本発明の一実施例を示す
側面図及び上面図である。 １・・・ミラー　２・・・ミラーベース、３・・・駆動
モータ、４・・・ねじ５５・・・間隙。FIGS. 1(a) and 1(b) are a side view and a top view showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Mirror 2... Mirror base, 3... Drive motor, 4... Screw 55... Gap.

Claims (1)

【特許請求の範囲】[Claims] レーザ光源から光学系を介して照射されたコリメート光
を反射する２つの面と、この２つの反射面による走査面
が等しくなるように調節可能な調節手段を有する回転多
面鏡を備えたことを特徴とするレーザ走査装置。It is characterized by comprising a rotating polygon mirror having two surfaces that reflect collimated light irradiated from a laser light source via an optical system and an adjusting means that can be adjusted so that the scanning surfaces of the two reflecting surfaces are equal. Laser scanning device.
JP17813090A 1990-07-05 1990-07-05 Laser scanner Pending JPH0467008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17813090A JPH0467008A (en) 1990-07-05 1990-07-05 Laser scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17813090A JPH0467008A (en) 1990-07-05 1990-07-05 Laser scanner

Publications (1)

Publication Number Publication Date
JPH0467008A true JPH0467008A (en) 1992-03-03

Family

ID=16043177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17813090A Pending JPH0467008A (en) 1990-07-05 1990-07-05 Laser scanner

Country Status (1)

Country Link
JP (1) JPH0467008A (en)

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