JPS62120701U - - Google Patents
Info
- Publication number
- JPS62120701U JPS62120701U JP663286U JP663286U JPS62120701U JP S62120701 U JPS62120701 U JP S62120701U JP 663286 U JP663286 U JP 663286U JP 663286 U JP663286 U JP 663286U JP S62120701 U JPS62120701 U JP S62120701U
- Authority
- JP
- Japan
- Prior art keywords
- concave
- lens
- press lens
- press
- utility
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
- Optical Head (AREA)
Description
第１図は本考案の第一実施例によるプレスレン
ズを示す斜視図、第２図はその断面図、第３図は
第１図のプレスレンズをスペーサにて位置決めし
た状態を示す断面図、第４図は第３図の右側面図
、第５図は本考案の第二実施例によるプレスレン
ズを示す斜視図、第６図はその球面側から見た平
面図、第７図は第５図のプレスレンズの位置決め
機構を示す斜視図、第８図は第５図のプレスレン
ズを位置決めした状態を示す断面図、第９図は光
学式ピツクアツプの光学系の構造を示す説明図、
第１０図はホトダイオードとシリンドリカルレン
ズの位置関係を示す平面図、第１１図は従来の一
体型レンズを示す斜視図である。
１０……プレスレンズ、１１……シリンドリカ
ル面、１２……凹球面、１３，１５……位置決め
部、２０……スペーサ、２１……突起、３０……
光学式ピツクアツプのベース、３１……固定壁、
３２……突起。
1 is a perspective view showing a press lens according to a first embodiment of the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is a sectional view showing the press lens of FIG. 1 positioned with a spacer, and FIG. 4 is a right side view of FIG. 3, FIG. 5 is a perspective view showing a press lens according to a second embodiment of the present invention, FIG. 6 is a plan view of the press lens as seen from the spherical side, and FIG. FIG. 8 is a sectional view showing the positioning mechanism of the press lens in FIG. 5, FIG. 9 is an explanatory diagram showing the structure of the optical system of the optical pickup,
FIG. 10 is a plan view showing the positional relationship between a photodiode and a cylindrical lens, and FIG. 11 is a perspective view showing a conventional integrated lens. 10... Press lens, 11... Cylindrical surface, 12... Concave spherical surface, 13, 15... Positioning portion, 20... Spacer, 21... Protrusion, 30...
Base of optical pick-up, 31...Fixed wall,
32... Protrusion.
Claims (1)
に位置する面が球形状に成形されており、且つシ
リンドリカル形状側の面または球形状側の面の有
効径外の縁部に、凹状または凸状の位置決め部が
形成されて成るプレスレンズ。 (2) 凹状または凸状の位置決め部には、レンズ
の光軸方向の位置決め面と回転方向の位置決め面
とが形成されている実用新案登録請求の範囲第１
項記載のプレスレンズ。 (3) 凹状または凸状の位置決め部は、シリンド
リカル形状の軸方向に対し４５度回転した向きに
形成されている実用新案登録請求の範囲第１項記
載のプレスレンズ。[Claims for Utility Model Registration] (1) One side has a cylindrical shape, and the surface on the back side is formed into a spherical shape, and the area outside the effective diameter of the cylindrical side surface or the spherical side surface is A press lens with a concave or convex positioning part formed on the edge. (2) The concave or convex positioning portion has a positioning surface in the optical axis direction of the lens and a positioning surface in the rotational direction.Claim No. 1 of Utility Model Registration
Press lens described in section. (3) The press lens according to claim 1, wherein the concave or convex positioning portion is formed in a direction rotated by 45 degrees with respect to the axial direction of the cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP663286U JPS62120701U (en) | 1986-01-22 | 1986-01-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP663286U JPS62120701U (en) | 1986-01-22 | 1986-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62120701U true JPS62120701U (en) | 1987-07-31 |
Family
ID=30789332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP663286U Pending JPS62120701U (en) | 1986-01-22 | 1986-01-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62120701U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60234243A (en) * | 1984-05-07 | 1985-11-20 | Matsushita Electric Ind Co Ltd | Optical pickup |
-
1986
- 1986-01-22 JP JP663286U patent/JPS62120701U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60234243A (en) * | 1984-05-07 | 1985-11-20 | Matsushita Electric Ind Co Ltd | Optical pickup |