JP2555865B2 - Optical information device - Google Patents
Optical information deviceInfo
- Publication number
- JP2555865B2 JP2555865B2 JP6042163A JP4216394A JP2555865B2 JP 2555865 B2 JP2555865 B2 JP 2555865B2 JP 6042163 A JP6042163 A JP 6042163A JP 4216394 A JP4216394 A JP 4216394A JP 2555865 B2 JP2555865 B2 JP 2555865B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- movable
- optical system
- fixed part
- medium
- 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.)
- Expired - Lifetime
Links
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は情報の入出力端末装置に
係り、特に光学的方法を用いる場合に好適な光学的情報
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information input / output terminal device, and more particularly to an optical information device suitable when an optical method is used.
【０００２】[0002]
【従来の技術】従来、ガスレーザなど大型の光源を持つ
光ディスクの原盤記録カッティング装置のようなものは
光学系全体として見ると大型になり、精密な位置決めの
ためには可動部の軽量化を図って光学系を分離しなけれ
ばならない。（例えば特公昭５３−２８２０１）このよ
うなものは位置決め精度に重点を置いているためアクセ
ス速度は配慮されていなかった。2. Description of the Related Art Conventionally, a device such as a master disk recording and cutting device for an optical disk having a large light source such as a gas laser is large in size as a whole optical system, and in order to perform precise positioning, the weight of a movable part is reduced. The optics must be separated. (For example, Japanese Examined Patent Publication No. 53-28201) Since such an item places importance on the positioning accuracy, the access speed is not considered.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は光学系
を可動側と固定側に分離することによって可動部の小型
軽量化を図り、アクセス時間の短縮が図れるとともに分
離したことに伴う調整も比較的容易に行なえる光学的情
報記録再生装置を提供するにある。The object of the present invention is to reduce the size and weight of the movable part by separating the optical system into the movable side and the fixed side, shorten the access time, and adjust the separation. Another object of the present invention is to provide an optical information recording / reproducing apparatus which can be relatively easily performed.
【０００４】[0004]
【課題を解決するための手段】光学系の光軸がずれる場
合、直交３軸のｘｙｚ軸の各軸回りの回転θx，θy，θ
z方向へのずれが考えられるが、このうち特に検出系に
オフセット信号が発生しやすいｘ，ｚ，θx方向につい
て調整を精密に行なう必要がある。When the optical axis of the optical system is deviated, rotations θ x , θ y , and θ around each of the three orthogonal xyz axes are given.
There may be a shift in the z direction, but it is necessary to make precise adjustments in the x, z, and θ x directions, among which offset signals are likely to occur in the detection system.
【０００５】本発明は、光学系を可動部と固定部に分離
し、焦点ずれ及びトラックずれを補正する駆動機構のみ
を可動部として、光学ヘッドの小型軽量化を可能とし、
可動部と固定側の光学系の光軸を一致させるための調整
機構を設けたことを特徴とする光学的情報記録再生装置
である。According to the present invention, the optical system is divided into a movable portion and a fixed portion, and only the driving mechanism for correcting the focus deviation and the track deviation is used as the movable portion, thereby making it possible to reduce the size and weight of the optical head.
The optical information recording / reproducing apparatus is characterized in that an adjusting mechanism for aligning the optical axes of the movable part and the fixed side optical system is provided.
【０００６】具体的には、光学系を用い、光源からの光
を媒体に照射し、媒体から戻る光を検出器で検出して、
媒体に記録された信号の再生を行う装置において、光学
系を可動部と固定部に分離し、焦点ずれ及びトラックず
れを補正する駆動機構を可動部に配置し、光源及び検出
器を固定部に配置し、可動部と固定部の光学系の光軸を
一致させるため固定部全体を移動させる調整機構を光路
外に設けたことを特徴とする。 Specifically, the light from the light source is used by using an optical system.
Is radiated to the medium, the light returning from the medium is detected by the detector,
In the device that reproduces the signal recorded on the medium,
The system is separated into a movable part and a fixed part to prevent defocusing and tracking.
A drive mechanism that corrects this is arranged in the movable part, and the light source and detection are performed.
The optical axis of the optical system of the movable part and the fixed part.
An adjustment mechanism that moves the entire fixed part to match the optical path
It is characterized by being provided outside.
【０００７】[0007]
【作用】このために本願発明は、第１の光学系の光軸と
第２の光学系の光軸を一致させるための調整機構を有す
る。この構成によれば、第１、第２の光学系内部の光軸
調整は全く独立に行なうことが可能となる。このため、
第１、第２の光学系内部の光軸調整を完了した後に、本
願発明の調整機構を用いて第１、第２の光学系の相互の
光軸を一致させれば、装置全体の光軸合わせを簡易かつ
高精度に実現することが出来る。しかも、第１、第２の
光学系の間を往復する光の経路は同じであるため、第２
の光学系を出る光束の光軸と入る光束の光軸は同一とし
て取り扱うことが出来る。このため、第２の光学系単独
で内部に有る光源と光検出器それぞれの光軸合わせを極
めて簡易かつ高精度に行なうことができる。また、往復
と復路双方の光軸合わせを同時に行なうことが出来る。To this end, the present invention has an adjusting mechanism for aligning the optical axis of the first optical system with the optical axis of the second optical system. With this configuration, the optical axes inside the first and second optical systems can be adjusted completely independently. For this reason,
After the adjustment of the optical axes inside the first and second optical systems is completed, if the optical axes of the first and second optical systems are made to coincide with each other by using the adjusting mechanism of the present invention, the optical axes of the entire apparatus can be adjusted. The alignment can be realized easily and with high accuracy. Moreover, since the path of light that travels back and forth between the first and second optical systems is the same,
The optical axis of the light flux exiting the optical system and the optical axis of the light flux entering can be treated as the same. Therefore, the optical axes of the light source and the photodetector inside the second optical system alone can be aligned very easily and highly accurately. In addition, the optical axes of both the return path and the return path can be adjusted at the same time.
【０００８】[0008]
【実施例】以下、本発明の一実施例を図１及び図２によ
り説明する。図１は光ディスク装置信号検出部の概念図
である。ディスク１に信号の書き込み読み出しをする光
学系は可動光学ヘッド２と固定光学系６に分離されてい
る。可動光学ヘッド２はレール１８上にベアリング５で
支持されており、それには可動鏡４と、可動対物レンズ
３が搭載されており、焦点ずれおよびトラックずれを補
正するようになっている。固定光学系６には光源と検出
器などがあり、光源から出た光束１００は可動光学ヘッ
ド２を通ってディスク１に照射され、同じ経路を通って
固定光学系６内で検出器によって検出される。周知の構
成を用いて、この検出信号に基づいて焦点ずれ及びトラ
ックずれ補正のための制御信号を形成することができ
る。これらの制御信号は可動鏡４や可動対物レンズ３の
駆動制御に用いられる。この構成において光学系が２つ
に分離されているため相互の位置関係がずれていると検
出信号にオフセットが生じてしまう。その調整を調整台
固定部８と調整台可動部７で行なう。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a conceptual diagram of an optical disk device signal detection unit. The optical system for writing / reading signals to / from the disk 1 is separated into a movable optical head 2 and a fixed optical system 6. The movable optical head 2 is supported on a rail 18 by a bearing 5, on which a movable mirror 4 and a movable objective lens 3 are mounted to compensate for focus deviation and track deviation.
I am supposed to correct it . The fixed optical system 6 has a light source, a detector, and the like. The light beam 100 emitted from the light source passes through the movable optical head 2 and is applied to the disk 1, and is detected by the detector in the fixed optical system 6 through the same path. It Well-known structure
Defocus and trajectories based on this detection signal.
Control signal can be generated for correction
It These control signals are transmitted to the movable mirror 4 and the movable objective lens 3.
Used for drive control. In this configuration, since the optical system is separated into two, if the mutual positional relationship is deviated, an offset occurs in the detection signal. The adjustment is performed by the adjustment table fixing section 8 and the adjustment table moving section 7.
【０００９】図２にその詳細を示す。光学系取付台９は
板ばね１０と調整ネジ１１によって調整台可動部７内に
保持されている。Ｚ軸方向の移動は調整台可動部７ごと
に調整ネジ１１−ｄによって行なう。Ｘ軸方向への移動
は調整ネジ１１−ａによって行ない、Ｚ軸回りへの回転
は調整ネジ１１−ｂ，Ｘ軸回りの回転は調整ネジ１１−
ｃによって行なう。この時、一軸の移動によって他の軸
の姿勢が変化することはないため、計４軸の移動が相互
干渉なしに行なわれる。従って本実施例によれば、光軸
の調整が容易に行なえるため光ディスク装置の組立が簡
単となる効果がある。 FIG. 2 shows the details. The optical system mounting base 9 is held in the adjusting base moving part 7 by a leaf spring 10 and an adjusting screw 11. The movement in the Z-axis direction is performed by the adjusting screw 11-d for each movable portion 7 of the adjusting table. The movement in the X-axis direction is performed by the adjusting screw 11-a, the rotation around the Z-axis is the adjusting screw 11-b, and the rotation around the X-axis is the adjusting screw 11-.
c. At this time, the movement of one axis does not change the postures of the other axes, and therefore the movement of a total of four axes is performed without mutual interference. Therefore, according to the present embodiment, the optical axis can be easily adjusted, so that the optical disk device can be easily assembled .
【００１０】[0010]
【発明の効果】本発明によれば、組立時に調整が容易に
行なえるので各部品の寸法精度を粗くすることができ、
しかも検出信号を精度良く検出できる構成とすることが
可能となる。したがって検出信号の安定化が図れるとい
う効果がある。According to the present invention, since the adjustment can be easily performed at the time of assembly, the dimensional accuracy of each component can be made rough,
In addition, it becomes possible to detect the detection signal with high accuracy. Therefore, there is an effect that the detection signal can be stabilized.
【００１１】特に光路を一致させる調整機構を光路外に
設けたので、固定部及び可動部の中の光学系を構成する
光学素子相互の位置関係は変えること無く調整が可能と
なる。よって、個々の光学部品は組立て時に幾何光学的
に最適に配置すれば以降の調整が不要となり、また光学
系の中に冗長な光学素子を付加する必要もないので光学
特性の劣化もない。 Particularly, an adjusting mechanism for matching the optical paths is provided outside the optical paths.
Since it is provided, the optical system in the fixed part and the movable part is configured.
Adjustment is possible without changing the positional relationship between optical elements
Become. Therefore, the individual optical components are
If it is optimally arranged for
Since there is no need to add redundant optical elements in the system,
No deterioration of characteristics.
【図１】全体構成の側面図。FIG. 1 is a side view of the overall configuration.
【図２】図１の調整機構部の詳細な斜視図。FIG. 2 is a detailed perspective view of the adjusting mechanism portion of FIG.
１…ディスク、２…可動光学ヘッド、３…可動対物レン
ズ、４…可動鏡、５…ベアリング、６…固定光学系、７
…調整台可動部、８…調整台固定部、９…光学系取付
台、１０…板ばね、１１…調整ネジ、１８…レール。1 ... Disk, 2 ... Movable optical head, 3 ... Movable objective lens, 4 ... Movable mirror, 5 ... Bearing, 6 ... Fixed optical system, 7
... Adjustable table movable part, 8 ... Adjusted table fixed part, 9 ... Optical system mount, 10 ... Leaf spring, 11 ... Adjusting screw , 18 ... Rail.
Claims (1)
し、媒体から戻る光を検出器で検出して、媒体に記録さ
れた信号の再生を行う装置において、上記光学系を可動
部と固定部に分離し、焦点ずれ及びトラックずれを補正
する駆動機構を上記可動部に配置し、上記光源及び検出
器を上記固定部に配置し、可動部と固定部の光学系の光
軸を一致させるため上記固定部全体を移動させる調整機
構を光路外に設けたことを特徴とする光学的情報装置。1. In an apparatus for irradiating light from a light source onto a medium and detecting light returning from the medium with a detector to reproduce a signal recorded on the medium, the optical system is movable. A drive mechanism that is separated into a fixed part and a fixed part and corrects the focus deviation and the track deviation is arranged in the movable part, the light source and the detector are arranged in the fixed part, and the optical axis of the optical system of the movable part and the fixed part is arranged. An optical information device, characterized in that an adjusting mechanism for moving the entire fixed portion is provided outside the optical path in order to match the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6042163A JP2555865B2 (en) | 1994-03-14 | 1994-03-14 | Optical information device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6042163A JP2555865B2 (en) | 1994-03-14 | 1994-03-14 | Optical information device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22206184A Division JPS61104338A (en) | 1984-10-24 | 1984-10-24 | Optical information recording and reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0750015A JPH0750015A (en) | 1995-02-21 |
| JP2555865B2 true JP2555865B2 (en) | 1996-11-20 |
Family
ID=12628300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6042163A Expired - Lifetime JP2555865B2 (en) | 1994-03-14 | 1994-03-14 | Optical information device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2555865B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5165947A (en) * | 1974-12-04 | 1976-06-08 | Mansei Kogyo Kk | KOJIKUCHOSEISOCHITSUKIKOGAKUTEKIJOHOYOMITORISOCHI |
| JPS5994254A (en) * | 1982-11-22 | 1984-05-30 | Asahi Optical Co Ltd | Optical information reader |
-
1994
- 1994-03-14 JP JP6042163A patent/JP2555865B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0750015A (en) | 1995-02-21 |
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