JPH023508U - - Google Patents
Info
- Publication number
- JPH023508U JPH023508U JP8272488U JP8272488U JPH023508U JP H023508 U JPH023508 U JP H023508U JP 8272488 U JP8272488 U JP 8272488U JP 8272488 U JP8272488 U JP 8272488U JP H023508 U JPH023508 U JP H023508U
- Authority
- JP
- Japan
- Prior art keywords
- ribs
- lens
- lens body
- plastic lens
- end surface
- 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
Landscapes
- Lens Barrels (AREA)
- Mechanical Optical Scanning Systems (AREA)
Description
第１図は本考案の一実施例である第２ｆθレン
ズ部分１２の断面図、第２図はその正面図、第３
図は第２ｆθレンズ部分１２の第２図の切断面線
―から見た断面図、第４図はレーザプリンタ
の基本的な構成を示す平面図、第５図は典型的な
先行技術のシリンドリカルレンズ１の正面図、第
６図は第５図の切断線―から見た断面図、第
７図は第５図の切断面線―から見た断面図で
ある。
１２…第２ｆθレンズ部分、１２ａ…レンズ本
体、１２ｂ…リブ、２１，２２…端面、Ｒ３，Ｒ
４…面。
FIG. 1 is a sectional view of the second fθ lens portion 12 which is an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG.
The figure is a sectional view of the second fθ lens portion 12 taken along the cutting plane line in FIG. 2, FIG. 4 is a plan view showing the basic configuration of a laser printer, and FIG. 5 is a typical prior art cylindrical lens. 1, FIG. 6 is a cross-sectional view taken along the cutting line in FIG. 5, and FIG. 7 is a cross-sectional view taken along the cutting line in FIG. 12... Second fθ lens portion, 12a... Lens body, 12b... Rib, 21, 22... End surface, R3, R
4th side.
Claims (1)
長い円弧状のレンズ本体の外周にリブを形成した
プラスチツク製レンズにおいて、 リブの端面の形状をレンズ本体に沿わせるよう
にしたことを特徴とするプラスチツク製レンズ。[Claim for Utility Model Registration] A plastic lens in which ribs are formed on the outer periphery of an elongated arc-shaped lens body, which is a part of a roughly spherical spherical shell, in which the shape of the end surface of the ribs is aligned with the lens body. A plastic lens characterized by the fact that it looks like this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8272488U JPH023508U (en) | 1988-06-21 | 1988-06-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8272488U JPH023508U (en) | 1988-06-21 | 1988-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH023508U true JPH023508U (en) | 1990-01-10 |
Family
ID=31307468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8272488U Pending JPH023508U (en) | 1988-06-21 | 1988-06-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH023508U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03110402U (en) * | 1990-02-28 | 1991-11-13 | ||
| JP2005195844A (en) * | 2004-01-07 | 2005-07-21 | Toshiba Corp | Scanning lens and scanning lens system |
-
1988
- 1988-06-21 JP JP8272488U patent/JPH023508U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03110402U (en) * | 1990-02-28 | 1991-11-13 | ||
| JP2005195844A (en) * | 2004-01-07 | 2005-07-21 | Toshiba Corp | Scanning lens and scanning lens system |