JPS6417017A - Optical system which is variable in conjugate length by using lens array - Google Patents
Optical system which is variable in conjugate length by using lens arrayInfo
- Publication number
- JPS6417017A JPS6417017A JP17257887A JP17257887A JPS6417017A JP S6417017 A JPS6417017 A JP S6417017A JP 17257887 A JP17257887 A JP 17257887A JP 17257887 A JP17257887 A JP 17257887A JP S6417017 A JPS6417017 A JP S6417017A
- Authority
- JP
- Japan
- Prior art keywords
- lens array
- lens
- image
- lengths
- conjugate length
- 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
Abstract
PURPOSE:To form an optical system which is variable in conjugate length by using lens arrays by disposing plural pieces of the lens arrays which are arranged with many pieces of distributed index type rod lenses in the optical axis direction in such a manner that the optical axes thereof are aligned approximately to each other. CONSTITUTION:Both the 1st lens array 9 and the 2nd lens array 10 are disposed apart by a specified spacing 2 in the state of aligning the optical axes approximately to each other. The optical constants and lens lengths of both are equal and the lens lengths are selected at the lengths at which an unmagnified image 4 of an object 3 is obtd. An inverted and reduced image 20 of the object 3 is formed in the intermediate position of the 1st lens array 9 and the 2nd lens array 10 by the 1st lens array 9 and the inverted and magnified image of the image 20 is formed on an image plane 6 by the 2nd lens array 10, by which the erecting unmagnified image 4 of the object 4 is eventually formed on the image plane 4. The conjugate length can be varied as desired by changing the inter-lens array spacing 2 by as much as needed, i.e., by changing the relative positional relation in the optical axis direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17257887A JPS6417017A (en) | 1987-07-10 | 1987-07-10 | Optical system which is variable in conjugate length by using lens array |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17257887A JPS6417017A (en) | 1987-07-10 | 1987-07-10 | Optical system which is variable in conjugate length by using lens array |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6417017A true JPS6417017A (en) | 1989-01-20 |
Family
ID=15944434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17257887A Pending JPS6417017A (en) | 1987-07-10 | 1987-07-10 | Optical system which is variable in conjugate length by using lens array |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6417017A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6462794B1 (en) | 1998-10-14 | 2002-10-08 | Hitachi, Ltd. | Image forming unit, enlarging unit, optical parts, and image display apparatus having these components |
JP2013045098A (en) * | 2011-08-26 | 2013-03-04 | Kyocera Corp | Erecting equal-magnification lens array unit and image reading apparatus |
JP2013045096A (en) * | 2011-08-26 | 2013-03-04 | Kyocera Corp | Erecting equal-magnification lens array unit and image reading apparatus |
WO2013031163A1 (en) * | 2011-08-26 | 2013-03-07 | 京セラ株式会社 | Upright unit-magnification lens array unit, image reading device and image forming device |
JP2013512470A (en) * | 2009-12-01 | 2013-04-11 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | Optical imaging device |
JP2013114005A (en) * | 2011-11-28 | 2013-06-10 | Kyocera Corp | Erect equal magnification lens array unit, image reading device and image formation device |
JP2014235348A (en) * | 2013-06-03 | 2014-12-15 | ニスカ株式会社 | Rod lens array and image sensor |
-
1987
- 1987-07-10 JP JP17257887A patent/JPS6417017A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6462794B1 (en) | 1998-10-14 | 2002-10-08 | Hitachi, Ltd. | Image forming unit, enlarging unit, optical parts, and image display apparatus having these components |
JP2013512470A (en) * | 2009-12-01 | 2013-04-11 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | Optical imaging device |
US9383557B2 (en) | 2009-12-01 | 2016-07-05 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Device for optical imaging |
JP2013045098A (en) * | 2011-08-26 | 2013-03-04 | Kyocera Corp | Erecting equal-magnification lens array unit and image reading apparatus |
JP2013045096A (en) * | 2011-08-26 | 2013-03-04 | Kyocera Corp | Erecting equal-magnification lens array unit and image reading apparatus |
WO2013031163A1 (en) * | 2011-08-26 | 2013-03-07 | 京セラ株式会社 | Upright unit-magnification lens array unit, image reading device and image forming device |
US9354360B2 (en) | 2011-08-26 | 2016-05-31 | Kyocera Corporation | Erecting equal-magnification lens array unit, image reading device and image forming device |
JP2013114005A (en) * | 2011-11-28 | 2013-06-10 | Kyocera Corp | Erect equal magnification lens array unit, image reading device and image formation device |
JP2014235348A (en) * | 2013-06-03 | 2014-12-15 | ニスカ株式会社 | Rod lens array and image sensor |
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