JPH0778900B2 - Optical pickup device - Google Patents
Optical pickup deviceInfo
- Publication number
- JPH0778900B2 JPH0778900B2 JP60082536A JP8253685A JPH0778900B2 JP H0778900 B2 JPH0778900 B2 JP H0778900B2 JP 60082536 A JP60082536 A JP 60082536A JP 8253685 A JP8253685 A JP 8253685A JP H0778900 B2 JPH0778900 B2 JP H0778900B2
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- optical system
- optical
- objective lens
- deflecting member
- 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
- Optical Head (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は，薄型化を図つた，光ピツクアツプ装置に関
する。The present invention relates to a thin optical pickup device.
従来，レーザ光源からの光束を偏向部材で偏向して対物
レンズに入射させる光ピツクアツプ装置として，第４図
に示すようなものが知られている。すなわち，対物レン
ズ１および対物レンズ１を光軸方向に移動させるための
駆動部２が設けられている第一の光学系と，レーザ光源
（図示せず）からの光束３を偏向して対物レンズ１に入
射させる偏向部材４が設けられている第二の光学系とを
上下に配置し，第一の光学系の基板５に穿設された透孔
６を介して偏向部材４で偏向した光束を対物レンズ１に
入射させているものである。なお，駆動部２は，第４図
において基板５に立設された支持軸７に装着されている
が，第５図に示すように支持部材８と結合されているも
のもある。また，第4,5図において,9は光デイスク,10は
偏向部材４が固定された第二の光学系の基板であり，第
４図において,11は基板５の一部が下方に突出されて支
持軸７を立設している支持軸立設部である。Conventionally, as an optical pickup device for deflecting a light beam from a laser light source by a deflecting member and making it incident on an objective lens, a device as shown in FIG. 4 is known. That is, the objective lens 1 and the first optical system provided with the driving unit 2 for moving the objective lens 1 in the optical axis direction, and the light beam 3 from the laser light source (not shown) are deflected to objective lens. A light beam deflected by the deflecting member 4 through the through hole 6 formed in the substrate 5 of the first optical system by vertically disposing the second optical system provided with the deflecting member 4 which is incident on the first optical system. Is incident on the objective lens 1. The drive unit 2 is mounted on the support shaft 7 which is erected on the substrate 5 in FIG. 4, but it may be connected to the support member 8 as shown in FIG. In FIGS. 4 and 5, 9 is an optical disc, 10 is a substrate of the second optical system to which the deflecting member 4 is fixed, and in FIG. 4, 11 is a part of the substrate 5 protruding downward. Is a support shaft standing portion in which the support shaft 7 is installed upright.
この従来技術においては，第一の光学系の基板５と第二
の光学系の基板10との間が偏向部材４の高さｌの分だけ
開いているため，光ピツクアツプ装置の高さＬが高いと
いう問題点がある。In this prior art, since the distance between the substrate 5 of the first optical system and the substrate 10 of the second optical system is opened by the height 1 of the deflecting member 4, the height L of the optical pickup device is There is a problem that it is expensive.
この発明は，このような従来技術の問題点を解決する目
的でなされたものである。The present invention has been made for the purpose of solving the problems of the prior art.
上記問題点を解決するための手段を，実施例に対応する
第１図を用いて以下説明する。この発明は，対物レンズ
１および該対物レンズ１を光軸方向に移動させるための
駆動部２が設けられている第一の光学系の基板５と，レ
ーザ光源からの光束３を偏向して対物レンズ１に入射さ
せる偏向部材４が設けられている第二の光学系の基板10
とが上下に配置されている光ピツクアツプ装置におい
て，第一の光学系の基板５の一部に光路に沿って切り欠
いた切欠部12を形成し，前記第一の光学系の基板５と第
二の光学系の基板10とを当接して，切欠部12に偏向部材
４を配置したものである。Means for solving the above problems will be described below with reference to FIG. 1 corresponding to the embodiment. According to the present invention, an objective lens 1 and a substrate 5 of a first optical system provided with a drive unit 2 for moving the objective lens 1 in an optical axis direction, and a light beam 3 from a laser light source are deflected to make an objective. Second optical system substrate 10 provided with a deflecting member 4 for entering the lens 1.
In the optical pickup device in which and are arranged above and below, a notch 12 cut out along the optical path is formed in a part of the substrate 5 of the first optical system, and the substrate 5 of the first optical system and the The deflecting member 4 is arranged in the notch 12 by contacting the substrate 10 of the second optical system.
このように構成されたものにおいては，偏向部材４の高
さの分だけ薄くなる。In the case of such a configuration, the height is reduced by the height of the deflecting member 4.
第１図はこの発明の一実施例を示す図である。第１図に
おいて,1は対物レンズ,2は対物レンズ１を移動させる駆
動部,3はレーザ光源（図示せず）からの光束,4は偏向部
材,5は第一の光学系の基板,7は支持軸,9は光デイスク,1
0は第二の光学系の基板,11は支持軸立設部である。FIG. 1 is a diagram showing an embodiment of the present invention. In FIG. 1, 1 is an objective lens, 2 is a drive unit for moving the objective lens 1, 3 is a light beam from a laser light source (not shown), 4 is a deflecting member, 5 is a substrate of the first optical system, 7 Is support shaft, 9 is optical disc, 1
Reference numeral 0 is a substrate of the second optical system, and 11 is a supporting shaft standing portion.
基板５の一部には，第２図に示すように，光路すなわち
光束３の方向に沿って切り欠いた切欠部12が形成されて
いる。基板10には透孔13が穿設されており，透孔13には
支持軸立設部11が挿入される。透孔13および支持軸立設
部11を介して基板５と基板10とを当接して，切欠部12に
偏向部材４を配置する。この当接により，偏向部材４の
上部は基板５の上面から突出している。基板５と基板10
が当接していても，切欠部12により光束３は偏向部材４
に入射し，基板５によつて光束３が影響を受けることは
ない。基板５と基板10との当接により，従来偏向部材４
の高さの分だけ開いていた基板5,10の間のギヤツプはな
くなり，偏向部材４の高さの分だけ光ピツクアツプ装置
は薄くなる。As shown in FIG. 2, a part of the substrate 5 is provided with a notch 12 cut out along the optical path, that is, the direction of the light beam 3. A through hole 13 is formed in the substrate 10, and a support shaft standing portion 11 is inserted into the through hole 13. The deflecting member 4 is arranged in the notch 12 by bringing the substrate 5 and the substrate 10 into contact with each other through the through hole 13 and the support shaft standing portion 11. Due to this contact, the upper portion of the deflecting member 4 projects from the upper surface of the substrate 5. Board 5 and board 10
Even if they are in contact with each other, the light beam 3 is deflected by the notch 12 so
And the light flux 3 is not affected by the substrate 5. Due to the contact between the substrate 5 and the substrate 10, the conventional deflection member 4
The gap between the substrates 5 and 10 which has been opened by the height of 1 is eliminated, and the optical pickup device is thinned by the height of the deflecting member 4.
以上の実施例は，基板５に支持軸立設部11がある場合で
あるが，支持軸立設部11がない場合には第３図のように
なる。The above embodiment is the case where the support shaft standing portion 11 is provided on the substrate 5, but when the support shaft standing portion 11 is not provided, it becomes as shown in FIG.
以上説明してきたように，第一の光学系の基板の一部に
光路に沿って切り欠いた切欠部を形成し，前記第一の光
学系の基板と第二の光学系の基板とを当接して，前記切
欠部に偏向部材を配置したものである。それ故基板間に
はギヤツプはない。したがつて，この発明によれば，薄
型化を図れるという効果が得られる。As described above, a notch cut out along the optical path is formed in a part of the substrate of the first optical system, and the substrate of the first optical system and the substrate of the second optical system are contacted with each other. The deflecting member is arranged in contact with the cutout portion. Therefore, there is no gear gap between the substrates. Therefore, according to the present invention, it is possible to obtain the effect of achieving a thin structure.
第１図はこの発明の一実施例を示す図，第２図は第１図
においてＡ−Ａから見た図，第３図はこの発明の他の実
施例を示す図，第4,5図は従来技術を示す図である。 １……対物レンズ,4……偏向部材,5……第一の光学系の
基板,10……第二の光学系の基板,12……切欠部、13……
透孔FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram seen from AA in FIG. 1, FIG. 3 is a diagram showing another embodiment of the present invention, and FIGS. FIG. 4 is a diagram showing a conventional technique. 1 ... Objective lens, 4 ... Deflection member, 5 ... First optical system substrate, 10 ... Second optical system substrate, 12 ... Notch, 13 ...
Through hole
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中里 三武郎 東京都大田区東糀谷２丁目12番14号 赤井 電機株式会社内 (72)発明者 藤田 俊一 東京都大田区東糀谷２丁目12番14号 赤井 電機株式会社内 (72)発明者 右近 浩太郎 東京都大田区東糀谷２丁目12番14号 赤井 電機株式会社内 (56)参考文献 特開 昭59−231748（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Sanburo Nakazato 2-12-14 Higashi-Kojiya, Ota-ku, Tokyo Akai Electric Co., Ltd. (72) Inventor Shunichi Fujita 2-12-14 Higashi-Kojiya, Ota-ku, Tokyo Akai Electric Machinery Co., Ltd. (72) Inventor Kotaro Ukon 2-12-14 Higashi Kojiya, Ota-ku, Tokyo Akai Electric Machinery Co., Ltd. (56) Reference JP-A-59-231748 (JP, A)
Claims (2)
に移動させるための駆動部が設けられている第一の光学
系の基板と，レーザ光源からの光束を偏向して該対物レ
ンズに入射させる偏向部材が設けられている第二の光学
系の基板とが上下に配置されている光ピツクアツプ装置
において，第一の光学系の基板の一部に光路に沿って切
り欠いた切欠部を形成し，前記第一の光学系の基板と第
二の光学系の基板とを当接して，前記切欠部に偏向部材
を配置したことを特徴とする光ピツクアツプ装置1. A substrate of a first optical system provided with an objective lens and a drive unit for moving the objective lens in the optical axis direction, and a light beam from a laser light source is deflected and incident on the objective lens. In an optical pick-up device in which a second optical system substrate provided with a deflecting member is arranged above and below, a notch cut out along an optical path is formed in a part of the first optical system substrate. The optical pick-up device is characterized in that the substrate of the first optical system and the substrate of the second optical system are brought into contact with each other and a deflecting member is arranged in the cutout portion.
いる支持軸立設部が第二の光学系の基板に穿設された透
孔に挿入されている特許請求の範囲第１項記載の光ピツ
クアツプ装置2. A support shaft erecting portion for erecting a support shaft on which a drive portion is mounted is inserted into a through hole formed in a substrate of the second optical system. Optical pickup device according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60082536A JPH0778900B2 (en) | 1985-04-19 | 1985-04-19 | Optical pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60082536A JPH0778900B2 (en) | 1985-04-19 | 1985-04-19 | Optical pickup device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61242351A JPS61242351A (en) | 1986-10-28 |
| JPH0778900B2 true JPH0778900B2 (en) | 1995-08-23 |
Family
ID=13777226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60082536A Expired - Lifetime JPH0778900B2 (en) | 1985-04-19 | 1985-04-19 | Optical pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0778900B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2509333Y2 (en) * | 1985-06-21 | 1996-09-04 | シャープ株式会社 | Objective lens device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59201240A (en) * | 1983-04-28 | 1984-11-14 | Olympus Optical Co Ltd | Optical head |
| JPH0782655B2 (en) * | 1983-04-28 | 1995-09-06 | オリンパス光学工業株式会社 | Optical head |
| JPS59231748A (en) * | 1983-06-13 | 1984-12-26 | Seiko Instr & Electronics Ltd | Objective lens device |
| JPS60177439A (en) * | 1984-02-23 | 1985-09-11 | Toshiba Corp | Optical information processor |
| JPS61111037U (en) * | 1984-12-25 | 1986-07-14 |
-
1985
- 1985-04-19 JP JP60082536A patent/JPH0778900B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61242351A (en) | 1986-10-28 |
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