JPH03108238U - - Google Patents
Info
- Publication number
- JPH03108238U JPH03108238U JP1531190U JP1531190U JPH03108238U JP H03108238 U JPH03108238 U JP H03108238U JP 1531190 U JP1531190 U JP 1531190U JP 1531190 U JP1531190 U JP 1531190U JP H03108238 U JPH03108238 U JP H03108238U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- optical path
- light shielding
- shielding plate
- moving
- 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
- 230000003287 optical effect Effects 0.000 claims 8
- 239000011521 glass Substances 0.000 claims 1
- 108091008695 photoreceptors Proteins 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Description
第１図は本考案に係る走査装置の概要説明図、
第２図はレンズの一般的結像関係を説明した図、
第３図は光量分布の補正量について説明した図、
第４図は画角が僅かなときの遮光状態を説明した
図、第５図は画角が大きいときの遮光状態を説明
した図、第６図はレンズおよび遮光板の移動態様
を説明した図、第７図は同上図の態様を平面的に
説明した図、第８図は本考案の一実施例を説明し
た図、第９図は遮光板の形状調整手段を説明した
図である。
１０……レンズ、１５，１６……ガイドシヤフ
ト、４５，４６……プーリー、４８……遮光板ワ
イヤ、５０……遮光板。
FIG. 1 is a schematic explanatory diagram of a scanning device according to the present invention;
Figure 2 is a diagram explaining the general imaging relationship of lenses.
Figure 3 is a diagram explaining the amount of correction of light intensity distribution.
Figure 4 is a diagram explaining the light shielding state when the angle of view is small, Figure 5 is a diagram explaining the light shielding state when the angle of view is large, and Figure 6 is a diagram explaining the movement of the lens and the light shielding plate. , FIG. 7 is a plan view explaining the aspect of the above figure, FIG. 8 is a diagram explaining an embodiment of the present invention, and FIG. 9 is a diagram explaining the shape adjusting means of the light shielding plate. 10... Lens, 15, 16... Guide shaft, 45, 46... Pulley, 48... Light shielding plate wire, 50... Light shielding plate.
Claims (1)
学系と、この走査光学系による原稿光像をミラー
およびレンズを介して感光体上にスリツト状に投
影し、変倍時には光路長を変えるべく上記ミラー
を移動させる光路長補正手段と、上記レンズを移
動させるレンズ移動手段と、上記スリツトの長手
方向の照度分布を補正する遮光板を有するスリツ
ト露光方式の走査装置において、 上記遮光板を上記レンズに対して上記光路長補
正手段の反対側のレンズ光路上に設け、かつ、案
内手段を介して上記レンズの光軸方向に移動自在
としたことを特徴とする走査装置。 ２ 請求項１において、遮光板の駆動手段を、レ
ンズ移動手段に付加した連動機構を介して共用さ
せたことを特徴とする走査装置。[Claims for Utility Model Registration] 1. A scanning optical system that scans an original on a contact glass, and an optical image of the original by this scanning optical system that is projected onto a photoreceptor in a slit shape through a mirror and a lens. A slit exposure type scanning device comprising an optical path length correcting means for moving the mirror to change the optical path length, a lens moving means for moving the lens, and a light shielding plate for correcting the illuminance distribution in the longitudinal direction of the slit, the above-mentioned A scanning device characterized in that a light shielding plate is provided on a lens optical path of the lens on the opposite side of the optical path length correction means, and is movable in the optical axis direction of the lens via a guide means. 2. The scanning device according to claim 1, wherein the driving means for the light shielding plate is shared via an interlocking mechanism added to the lens moving means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990015311U JP2519908Y2 (en) | 1990-02-19 | 1990-02-19 | Scanning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990015311U JP2519908Y2 (en) | 1990-02-19 | 1990-02-19 | Scanning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03108238U true JPH03108238U (en) | 1991-11-07 |
| JP2519908Y2 JP2519908Y2 (en) | 1996-12-11 |
Family
ID=31518624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990015311U Expired - Lifetime JP2519908Y2 (en) | 1990-02-19 | 1990-02-19 | Scanning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2519908Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198474A (en) * | 1981-06-01 | 1982-12-06 | Canon Inc | Adjusting device for exposure |
-
1990
- 1990-02-19 JP JP1990015311U patent/JP2519908Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198474A (en) * | 1981-06-01 | 1982-12-06 | Canon Inc | Adjusting device for exposure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2519908Y2 (en) | 1996-12-11 |
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