JPH02107120U - - Google Patents
Info
- Publication number
- JPH02107120U JPH02107120U JP1608189U JP1608189U JPH02107120U JP H02107120 U JPH02107120 U JP H02107120U JP 1608189 U JP1608189 U JP 1608189U JP 1608189 U JP1608189 U JP 1608189U JP H02107120 U JPH02107120 U JP H02107120U
- Authority
- JP
- Japan
- Prior art keywords
- pair
- amount
- moving
- optical system
- lens groups
- 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
- 238000003384 imaging method Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 108091008695 photoreceptors Proteins 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Description
第１図〜第５図は本考案による結像光学系ユニ
ツトの一実施例を示す図であり、第１図はその概
念図、第２図はそのレンズの移動特性曲線図、第
３図はその要部の平面図、第４図は従動部材の斜
視図、第５図は従動部材の組立側面図、第６図ａ
，ｂはそれぞれ従来の結像光学系ユニツトの要部
平面図である。
５…絞り、６…原稿、７…感光体、９…カム溝
、１０…従動部材、１２…ギヤ、１４…カムピン
部、１５…偏心ピン、１７…同時駆動部材、Ｒ１
…第１レンズ群、Ｒ２…第２レンズ群。
1 to 5 are diagrams showing an embodiment of the imaging optical system unit according to the present invention. FIG. 1 is a conceptual diagram thereof, FIG. 2 is a movement characteristic curve diagram of the lens, and FIG. FIG. 4 is a perspective view of the driven member, FIG. 5 is an assembled side view of the driven member, and FIG. 6 a
, b are plan views of essential parts of conventional imaging optical system units. 5... Aperture, 6... Document, 7... Photoreceptor, 9... Cam groove, 10... Followed member, 12... Gear, 14... Cam pin portion, 15... Eccentric pin, 17... Simultaneous drive member, R1
...first lens group, R2...second lens group.
Claims (1)
れ結像倍率を変化可能な結像光学系ユニツトにお
いて、絞りを中心に対称に配置された一対のレン
ズ群と、結像倍率を変化させるために前記一対の
レンズ群の各々を構成する一対のレンズを光軸方
向に移動させるときの所定量より少ない微小量だ
け前記一対のレンズを移動させる一対の微小量移
動手段と、この一対の微小量移動手段を同時に同
量だけ作動させる同時駆動機構を設けたことを特
徴とする結像光学系。 An imaging optical system unit that is placed between a document and a photoreceptor with a constant distance and that can change the imaging magnification includes a pair of lens groups that are arranged symmetrically around the aperture and that changes the imaging magnification. a pair of minute amount moving means for moving the pair of lenses by a minute amount smaller than a predetermined amount when moving the pair of lenses constituting each of the pair of lens groups in the optical axis direction; An imaging optical system characterized by being provided with a simultaneous drive mechanism that operates the amount moving means by the same amount at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1608189U JPH02107120U (en) | 1989-02-14 | 1989-02-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1608189U JPH02107120U (en) | 1989-02-14 | 1989-02-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02107120U true JPH02107120U (en) | 1990-08-27 |
Family
ID=31228699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1608189U Pending JPH02107120U (en) | 1989-02-14 | 1989-02-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02107120U (en) |
-
1989
- 1989-02-14 JP JP1608189U patent/JPH02107120U/ja active Pending