JPS6455918U - - Google Patents
Info
- Publication number
- JPS6455918U JPS6455918U JP15181687U JP15181687U JPS6455918U JP S6455918 U JPS6455918 U JP S6455918U JP 15181687 U JP15181687 U JP 15181687U JP 15181687 U JP15181687 U JP 15181687U JP S6455918 U JPS6455918 U JP S6455918U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- deflector
- receiving element
- light receiving
- light beam
- 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 6
Description
第１図は本考案の一実施例であるｆθレンズ４
０を用いた走査光学系２１の配置を示す平面図、
第２図は従来技術の走査光学系１の配置を示す平
面図、第３図は他の従来技術の走査光学系１ａの
配置を示す平面図である。
２１…走査光学系、２２…光源、２３…偏向器
、２４…ｆθレンズ本体、２５…感光ドラム、２
６…受光素子、２７…凸レンズ、４０…ｆθレン
ズ。
Figure 1 shows an fθ lens 4 which is an embodiment of the present invention.
A plan view showing the arrangement of the scanning optical system 21 using 0,
FIG. 2 is a plan view showing the arrangement of the scanning optical system 1 of the prior art, and FIG. 3 is a plan view showing the arrangement of the scanning optical system 1a of another prior art. 21... Scanning optical system, 22... Light source, 23... Deflector, 24... fθ lens body, 25... Photosensitive drum, 2
6... Light receiving element, 27... Convex lens, 40... fθ lens.
Claims (1)
光ビームを被走査媒体上に結像し、かつ偏向器か
らの光ビームを受光素子に与え、該受光素子の出
力に応答して被走査媒体の書込みまたは読取りの
制御が行われる走査光学系に用いられるｆθレン
ズにおいて、 前記ｆθレンズの偏向器から受光素子への光経
路上に凸レンズを一体的に形成し、これによつて
受光素子上に光ビームが結像されるようにしたこ
とを特徴とするｆθレンズ。[Claims for Utility Model Registration] A light beam generated from a light source and deflected by a deflector is imaged on a scanning medium, and the light beam from the deflector is applied to a light receiving element. In an fθ lens used in a scanning optical system in which writing or reading of a scanned medium is controlled in response to an output, a convex lens is integrally formed on the optical path from the deflector of the fθ lens to the light receiving element, An fθ lens characterized in that a light beam is thereby focused on a light receiving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15181687U JPS6455918U (en) | 1987-10-02 | 1987-10-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15181687U JPS6455918U (en) | 1987-10-02 | 1987-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6455918U true JPS6455918U (en) | 1989-04-06 |
Family
ID=31426195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15181687U Pending JPS6455918U (en) | 1987-10-02 | 1987-10-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6455918U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274016A (en) * | 1990-03-23 | 1991-12-05 | Canon Inc | Scanning optical device |
| JPH05134197A (en) * | 1991-10-11 | 1993-05-28 | Nippon Hikyumen Lens Kk | Scan optical system |
| JPWO2014192691A1 (en) * | 2013-05-29 | 2017-02-23 | ナルックス株式会社 | Scanning lens |
-
1987
- 1987-10-02 JP JP15181687U patent/JPS6455918U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274016A (en) * | 1990-03-23 | 1991-12-05 | Canon Inc | Scanning optical device |
| JPH05134197A (en) * | 1991-10-11 | 1993-05-28 | Nippon Hikyumen Lens Kk | Scan optical system |
| JPWO2014192691A1 (en) * | 2013-05-29 | 2017-02-23 | ナルックス株式会社 | Scanning lens |
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