JPS61156012U

JPS61156012U -

Info

Publication number: JPS61156012U
Application number: JP3839085U
Authority: JP
Priority date: 1985-03-18
Filing date: 1985-03-18
Publication date: 1986-09-27
Anticipated expiration: 2000-03-18
Also published as: JPH0528567Y2

Description

[Brief explanation of drawings]

第１図は本考案の実施例としてのピツクアツプ
装置の正断面図、第２図ないし第５図は第１図に
関する各々―矢視図、―矢視図、―
矢視図及び―矢視図、第６図は第３図に関す
る―矢視図、第７図は該ピツクアツプ装置の
一部詳細図、第８図ａないしｆはピツクアツプボ
デイの各々半断面を含む正面図、左側断面図、右
側断面図、平面図、底面図及び背面図、第９図は
該ピツクアツプ装置の一部詳細図、第１０図ａ及
ｂは波長板を担持するホルダの各々平面図及び正
面図、第１０図ｃは第１０図ａに関するｃ―ｏ―
ｃ断面図、第１１図ａ，ｂ及びｃは該ホルダを保
持するベース部材本体の各々平面図、右側面図及
び背面図、第１１図ｄは第１１図ａに関するｄ―
ｄ断面図、第１２図及び第１３図は対物レンズと
その駆動機構を示す各々分解斜視図及び斜視図、
第１４図ａないしｅはカバー部材の各々平面図。
左側断面図、右側断面図、正面図及び背面図、第
１５図ａないしｆは支持体の各々正面図、左側面
図、右側面図、平面図、底面図及び背面図、第１
６図は受光素子の受光面詳細図、第１７図は対物
レンズの移動ストロークと停止位置の関係を説明
するための図である。主要部分の符号の説明、１……ピツクアツプボ
デイ、１ａ……貫通孔、１ａ，１ｃ，７ａ……受
け面、１ａ，１ｅ，１ｆ，１ｇ……調整治具挿入
孔、１ｈ……接着剤溜り、１ｉ……案内孔、１ｋ
……座グリ部、１ｌ……長孔、１ｍ，１７ａ，５
０ａ，５０ｂ，５０ｃ……開孔部、１ｎ，１７ｂ
，４１ａ……凹部、１ｐ……丸孔、３……レーザ
ダイオード、４……グレイテイング、４ａ……外
側面、５……ビームスプリツタ、５ａ，５ｂ……
光軸、６……コリメータレンズ、７，８，９，２
１……円筒状ホルダ、７ｂ……内周面、７ｃ……
ひとみ、７ｄ……壁部、９ａ……センタリングガ
イド部、１１，１２，２３ｂ……波状座金、１４
……円筒状スリーブ、１４ａ……光通過孔、１４
ｂ……壁部、１４ｃ……外側面、１６……受光素
子、１７……板状ベース部材、１８……押圧バネ
、１９ａ，１９ｂ，２３，３９ａ，３９ｂ，４５
，５１，５２ａ……ネジ、２０……マルチレンズ
、２１ａ……環状溝、２３ａ……ワツシヤ、２３
ｃ……首部スリーブ、２５……波長板、２６……
ホルダ、２６ａ……座グリ部、２６ｂ……弧状部
分、２６ｄ，４７ｂ……突起、２６ｅ……外周、
２６ｆ……アーム部、２６ｇ……屈曲部、２７…
…ベース部材本体、２７ａ……支持突部、２７ｂ
……中心孔、２９……デイスク、３０……対物レ
ンズ、３０ａ……レンズパツド、３０ｂ……カウ
ンタウエイト、３１……リンズホルダ、３１ａ，
３１ｂ……張出部、３１ｃ……切欠部、３２……
フオーカシングコイル、３４……ボビン、３５…
…トラツキングコイル、３６，３８……板バネ、
３７……中継部材、３７ａ……突出部、３７ｂ…
…接着剤の逃げ溝、３９……ベース部材、３９ｃ
……位置決め突起、３９ｄ……凹部、４１……マ
グネツト、４２……ヨーク、４２ａ……突部、４
２ｂ……サブヨーク、４２ｄ……テーパ部、４３
……プリント基板、４７……カバー部材、４７ａ
，５０ｅ……可撓性係合爪、４７ｄ……傾斜部、
４７ｅ……半球状突起、５０……樹脂性支持体、
５０ｄ……センサステイ、５２……センサボード
、５３……発光ダイオード、５４，５７，５８…
…フオトダイオード、５５……制御回路基板。 FIG. 1 is a front cross-sectional view of a pick-up device as an embodiment of the present invention, and FIGS. 2 to 5 are respectively a view in the direction of the arrows, a view in the direction of the arrows, and a view in the direction of the arrows in FIG.
6 is a view in the direction of the arrows related to FIG. 3, FIG. 7 is a partially detailed view of the pickup device, and FIGS. 8a to 8f each include a half section of the pickup body. A front view, a left sectional view, a right sectional view, a top view, a bottom view and a rear view, FIG. 9 is a partially detailed view of the pickup device, and FIGS. 10 a and 10 b are respective plan views of the holder that supports the wave plate. and front view, Figure 10c is c-o- with respect to Figure 10a.
11a, b, and c are respectively a plan view, a right side view, and a rear view of the base member body holding the holder; FIG. 11d is a sectional view related to FIG. 11a;
d sectional view, FIGS. 12 and 13 are an exploded perspective view and a perspective view showing the objective lens and its drive mechanism, respectively;
FIGS. 14a to 14e are plan views of each cover member.
The left side sectional view, the right side sectional view, the front view and the rear view, and FIGS.
FIG. 6 is a detailed view of the light-receiving surface of the light-receiving element, and FIG. 17 is a diagram for explaining the relationship between the movement stroke and the stop position of the objective lens. Explanation of symbols of main parts, 1...Pickup body, 1a...Through hole, 1a, 1c, 7a...Receiving surface, 1a, 1e, 1f, 1g...Adjustment jig insertion hole, 1h...Adhesive reservoir , 1i...guide hole, 1k
...Spot facing part, 1l...Long hole, 1m, 17a, 5
0a, 50b, 50c...Opening part, 1n, 17b
, 41a... recess, 1p... round hole, 3... laser diode, 4... grating, 4a... outer surface, 5... beam splitter, 5a, 5b...
Optical axis, 6... Collimator lens, 7, 8, 9, 2
1... Cylindrical holder, 7b... Inner peripheral surface, 7c...
Pupil, 7d... Wall part, 9a... Centering guide part, 11, 12, 23b... Wavy washer, 14
...Cylindrical sleeve, 14a...Light passage hole, 14
b... Wall portion, 14c... Outer surface, 16... Light receiving element, 17... Plate base member, 18... Pressing spring, 19a, 19b, 23, 39a, 39b, 45
, 51, 52a... Screw, 20... Multi-lens, 21a... Annular groove, 23a... Washer, 23
c... Neck sleeve, 25... Wave plate, 26...
Holder, 26a... Spot facing portion, 26b... Arc-shaped portion, 26d, 47b... Protrusion, 26e... Outer periphery,
26f...Arm part, 26g...Bending part, 27...
...Base member main body, 27a...Support protrusion, 27b
... Center hole, 29 ... Disk, 30 ... Objective lens, 30a ... Lens pad, 30b ... Counterweight, 31 ... Lens holder, 31a,
31b... overhanging part, 31c... notch part, 32...
Focusing coil, 34...Bobbin, 35...
...Tracking coil, 36, 38...plate spring,
37...Relay member, 37a...Protrusion, 37b...
...Adhesive relief groove, 39...Base member, 39c
...Positioning protrusion, 39d...Recess, 41...Magnet, 42...Yoke, 42a...Protrusion, 4
2b...Sub yoke, 42d...Tapered part, 43
...Printed circuit board, 47...Cover member, 47a
, 50e...flexible engagement claw, 47d...slanted part,
47e...Semispherical projection, 50...Resin support,
50d...Sensor stay, 52...Sensor board, 53...Light emitting diode, 54, 57, 58...
...Photodiode, 55...Control circuit board.

Claims

[Claims for Utility Model Registration] (1) Includes a light receiving element, a plate-shaped base member supporting the light receiving element, and a holding member holding the light receiving element and the base member, and the light receiving element is attached to the base member. 1. A pick-up device in an optical information recording/reproducing device, characterized in that the pickup device is bonded within a recess provided in a main surface. (2) In the optical information recording and reproducing device according to claim 1, wherein the recess has a shape that allows positioning of the light receiving element in a plane perpendicular to the optical axis. Pickup device. (3) A pickup device in an optical information recording/reproducing apparatus according to claim 1 or 2, wherein a part of the recess also serves as an adhesive reservoir.