JPH06242359A - Method for fixing lens of laser unit - Google Patents
Method for fixing lens of laser unitInfo
- Publication number
- JPH06242359A JPH06242359A JP2834493A JP2834493A JPH06242359A JP H06242359 A JPH06242359 A JP H06242359A JP 2834493 A JP2834493 A JP 2834493A JP 2834493 A JP2834493 A JP 2834493A JP H06242359 A JPH06242359 A JP H06242359A
- Authority
- JP
- Japan
- Prior art keywords
- lens holder
- lens
- laser
- case
- fixing
- 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.)
- Withdrawn
Links
Landscapes
- Lens Barrels (AREA)
- Optical Couplings Of Light Guides (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はレーザユニットに関し、
特に電子写真式プリンタのレーザースキャンユニットの
組立に関する。BACKGROUND OF THE INVENTION The present invention relates to a laser unit,
In particular, it relates to the assembly of a laser scanning unit of an electrophotographic printer.
【０００２】[0002]
【従来の技術】従来、この種のレーザスキャンユニット
の焦点調整は、図２に示すようにレーザー発光部のレー
ザーダイオード１と焦点調整部のレンズホルダ２とそれ
らを収納するケース３で構成され、焦点の合った位置に
レンズホルダ２を固定するためネジ４が設けられてい
る。2. Description of the Related Art Conventionally, as shown in FIG. 2, focus adjustment of a laser scan unit of this type is made up of a laser diode 1 of a laser emitting section, a lens holder 2 of a focus adjusting section, and a case 3 for housing them. A screw 4 is provided to fix the lens holder 2 at a focused position.
【０００３】次に調整方法について説明する。まず、レ
ーザダイオード１を発光させレンズホルダー２に光を通
す。次に吸着ツール５でレンズホルダー２を吸着し、焦
点の合った適切な位置にケース３内をスライドさせ位置
を決める。位置が決まったら吸着ツール５を解除しネジ
６で固定する。Next, the adjusting method will be described. First, the laser diode 1 is caused to emit light and the light is passed through the lens holder 2. Next, the lens holder 2 is sucked by the suction tool 5, and the position is determined by sliding the inside of the case 3 to an appropriate position in focus. When the position is decided, the suction tool 5 is released and fixed with the screw 6.
【０００４】[0004]
【発明が解決しようとする課題】この従来の調整および
固定方法では、焦点調整した後のレンズホルダ２の固定
に際し、ネジ６に押されたレンズホルダ２が片側に寄せ
られ、部品精度上解決できないガタ寸法ａとして発生し
ていた。ａ寸法はレーザーダイオード１の光軸とレンズ
ホルダー２の光軸のズレとして有害であり解決しなけれ
ばならない問題点であった。With this conventional adjustment and fixing method, when fixing the lens holder 2 after the focus adjustment, the lens holder 2 pushed by the screw 6 is pushed to one side and cannot be solved in terms of component accuracy. The backlash dimension a occurred. The dimension a is harmful as a deviation between the optical axis of the laser diode 1 and the optical axis of the lens holder 2 and is a problem that must be solved.
【０００５】[0005]
【課題を解決するための手段】本発明のレンズ固定方法
では、レンズホルダーを保持する固定ネジを削除し、代
わりに接着工法を用い、エアー吸着を行ないながら直接
レンズホルダーに力を加えず浮かせた状態に固定する。In the lens fixing method of the present invention, the fixing screw for holding the lens holder is removed, and an adhesive method is used instead, and the lens holder is floated without applying force while adsorbing air. Fix in the state.
【０００６】[0006]
【実施例】次に本発明について図面を参照して説明す
る。The present invention will be described below with reference to the drawings.
【０００７】図１は本発明の実施例の断面図である。図
において、レーザダイオード１により発光された光は、
レンズホルダー２をスライド調整することで適切なビー
ム径が得られる。スライド調整は吸着ツール５で行なわ
れる。次にレンズホルダー２をケース３に固定する方法
として、接着孔４があり、接着剤により速やかに固定さ
れる。次に吸着ツール５を解除し、工事を終了する。FIG. 1 is a sectional view of an embodiment of the present invention. In the figure, the light emitted by the laser diode 1 is
An appropriate beam diameter can be obtained by slidingly adjusting the lens holder 2. The slide adjustment is performed by the suction tool 5. Next, as a method of fixing the lens holder 2 to the case 3, there is an adhesive hole 4, and the lens holder 2 is quickly fixed with an adhesive. Next, the suction tool 5 is released and the construction is completed.
【０００８】この時の接着剤の特性で大事なことはレン
ズ保護の為ガス発生の無いことが望ましい。At this time, it is desirable that no gas is generated in order to protect the lens, which is important for the characteristics of the adhesive.
【０００９】[0009]
【発明の効果】以上説明したように本発明は、レンズホ
ルダーの固定方法をネジ固定から接着剤固定に替えたこ
とで、エアー吸着された実際の調整位置にごく近い所で
固定することができる。この結果レーザー発光部との光
軸のズレをきわめて小さく押えることができる。As described above, according to the present invention, the method of fixing the lens holder is changed from screw fixing to adhesive fixing, so that the lens holder can be fixed at a position very close to the actual adjustment position where air is adsorbed. . As a result, the deviation of the optical axis from the laser emitting section can be suppressed to a very small level.
【図１】本発明の実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】従来例の構成を示す断面図である。FIG. 2 is a cross-sectional view showing a configuration of a conventional example.
１ レーザダイオード ２ レンズホルダー ３ ケース ４ 接着孔 ５ 吸着ツール ６ ネジ 1 Laser diode 2 Lens holder 3 Case 4 Bonding hole 5 Suction tool 6 Screw
Claims (2)
点を調節するレンズホルダーとそれらを収納するケース
とを備えたレーザユニットの前記レーザ発光部とレンズ
ホルダーの光軸を調整して固定するためのレンズ固定方
法において、 前記レンズホルダーを吸着ツールで吸着し前記レンズホ
ルダー内の所定の位置に保持した状態で、前記レンズホ
ルダーと前記ケースとの間に接着剤を流し込むことを特
徴とするレーザユニットのレンズ固定方法。1. A laser unit including a laser emitting unit for emitting laser light, a lens holder for adjusting a focus and a case for housing them, for adjusting and fixing the optical axes of the laser emitting unit and the lens holder. In the lens fixing method, the laser unit is characterized in that an adhesive is poured between the lens holder and the case in a state where the lens holder is sucked by a suction tool and held at a predetermined position in the lens holder. Lens fixing method.
穴から注入されることを特徴とする請求項１に記載され
たレーザユニットのレンズ固定方法。2. The lens fixing method for a laser unit according to claim 1, wherein the adhesive is injected through a hole provided in a side wall of the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2834493A JPH06242359A (en) | 1993-02-18 | 1993-02-18 | Method for fixing lens of laser unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2834493A JPH06242359A (en) | 1993-02-18 | 1993-02-18 | Method for fixing lens of laser unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06242359A true JPH06242359A (en) | 1994-09-02 |
Family
ID=12245990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2834493A Withdrawn JPH06242359A (en) | 1993-02-18 | 1993-02-18 | Method for fixing lens of laser unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06242359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6038361A (en) * | 1996-12-27 | 2000-03-14 | Minolta Co., Ltd. | Light guide support mechanism and supporting method |
-
1993
- 1993-02-18 JP JP2834493A patent/JPH06242359A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6038361A (en) * | 1996-12-27 | 2000-03-14 | Minolta Co., Ltd. | Light guide support mechanism and supporting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000509 |