JPH01170330U - - Google Patents
Info
- Publication number
- JPH01170330U JPH01170330U JP6643988U JP6643988U JPH01170330U JP H01170330 U JPH01170330 U JP H01170330U JP 6643988 U JP6643988 U JP 6643988U JP 6643988 U JP6643988 U JP 6643988U JP H01170330 U JPH01170330 U JP H01170330U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- outer periphery
- flange
- objective lens
- vertical wall
- 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.)
- Granted
Links
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Lens Barrels (AREA)
- Optical Head (AREA)
Description
第１図はこの考案の実施例を示す断面図、第２
図は従来の固定構造を示す断面図。
１は対物レンズ、２はレンズホルダ、４は接着
剤、１１はレンズ部、１２は円筒部、１３は鍔部
、１４は下面部、１５は外周部、１６は上面部、
２１は立壁部、２２は第１の受け部、２３は第２
の受け部、２４は接着剤受け部、２５は立壁部外
周。なお、各図中同一符号は同一又は相当部分を
示すものとする。
Figure 1 is a sectional view showing an embodiment of this invention, Figure 2 is a sectional view showing an embodiment of this invention.
The figure is a sectional view showing a conventional fixing structure. 1 is an objective lens, 2 is a lens holder, 4 is an adhesive, 11 is a lens portion, 12 is a cylindrical portion, 13 is a flange portion, 14 is a lower surface portion, 15 is an outer peripheral portion, 16 is an upper surface portion,
21 is a standing wall part, 22 is a first receiving part, 23 is a second part
24 is the adhesive receiving portion, and 25 is the outer periphery of the standing wall. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
ンズ部、 このレンズ部上面外周に上記レンズ部と一体形
成された鍔部、 上記レンズ部下面外周にこのレンズ部と一体形
成された円筒部、 上記対物レンズを保持するレンズホルダ上に形
成され、上記円筒部が挿入される穴を内径とし上
記鍔部と同径もしくは小さな径を外径とする円環
状に凸設した立壁部、 上記レンズホルダ上に形成され、上記立壁部外
周周辺の接着剤受け部とを備え、 上記穴に上記円筒部を挿入し、上記立壁部と上
記鍔部とで上記対物レンズを上記レンズホルダに
位置決めし、上記鍔部外周と上記立壁部外周と上
記接着剤受け部とを接着剤の層で固着することを
特徴とする光ピツクアツプ用対物レンズの固定構
造。[Scope of Claim for Utility Model Registration] A lens portion formed in an objective lens that condenses a light beam, a flange integrally formed with the lens portion on the outer periphery of the upper surface of the lens portion, and a flange portion formed on the outer periphery of the lower surface of the lens portion. An integrally formed cylindrical part is formed on the lens holder that holds the objective lens, and has an annular convex shape whose inner diameter is the same diameter or smaller diameter than the flange part, and the hole into which the cylindrical part is inserted has an inner diameter. a vertical wall portion formed on the lens holder, and an adhesive receiving portion around the outer periphery of the vertical wall portion; the cylindrical portion is inserted into the hole, and the objective lens is fixed to the vertical wall by the vertical wall portion and the flange portion; A fixing structure for an objective lens for optical pickup, characterized in that the objective lens is positioned in a lens holder and the outer periphery of the flange, the outer periphery of the standing wall, and the adhesive receiving part are fixed with a layer of adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6643988U JPH0648572Y2 (en) | 1988-05-20 | 1988-05-20 | Fixed structure of objective lens for optical pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6643988U JPH0648572Y2 (en) | 1988-05-20 | 1988-05-20 | Fixed structure of objective lens for optical pickup |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01170330U true JPH01170330U (en) | 1989-12-01 |
| JPH0648572Y2 JPH0648572Y2 (en) | 1994-12-12 |
Family
ID=31291845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6643988U Expired - Lifetime JPH0648572Y2 (en) | 1988-05-20 | 1988-05-20 | Fixed structure of objective lens for optical pickup |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648572Y2 (en) |
-
1988
- 1988-05-20 JP JP6643988U patent/JPH0648572Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0648572Y2 (en) | 1994-12-12 |