JPS643840U - - Google Patents
Info
- Publication number
- JPS643840U JPS643840U JP9605387U JP9605387U JPS643840U JP S643840 U JPS643840 U JP S643840U JP 9605387 U JP9605387 U JP 9605387U JP 9605387 U JP9605387 U JP 9605387U JP S643840 U JPS643840 U JP S643840U
- Authority
- JP
- Japan
- Prior art keywords
- concave
- lens array
- mirror lens
- roof mirror
- convex cylindrical
- 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 2
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は、本考案の１実施例を説明するための
図、第２図乃至第５図は、従来技術とその問題点
を説明するための図、第６図及び第７図は本考案
の特徴部分を説明するための図である。
１……ダハミラーレンズアレイを構成する結像
レンズのひとつ、２……ダハミラーレンズアレイ
を構成するダハミラーのひとつ、３……平面鏡、
４……偏倍用レンズ、４Ａ……凸フレネルシリン
ドリカルレンズ、４Ｂ……凹フレネルシリンドリ
カルレンズ。
FIG. 1 is a diagram for explaining one embodiment of the present invention, FIGS. 2 to 5 are diagrams for explaining the prior art and its problems, and FIGS. 6 and 7 are diagrams for explaining the present invention. FIG. 1... One of the imaging lenses forming the roof mirror lens array, 2... One of the roof mirrors forming the roof mirror lens array, 3... Plane mirror,
4...Polarizing lens, 4A...Convex Fresnel cylindrical lens, 4B...Concave Fresnel cylindrical lens.
Claims (1)
側に、上記ダハミラーレンズアレイにおけるアレ
イ配列方向に直交する方向に偏倍するように凹と
凸のシリンドリカルレンズを配してなり、 上記凹と凸のシリンドリカルレンズがフレネル
レンズであることを特徴とする、偏倍光学系。[Claim for Utility Model Registration] Concave and convex cylindrical lenses are arranged on the image side of an imaging element using a roof mirror lens array so as to polarize the magnification in a direction perpendicular to the array arrangement direction in the roof mirror lens array. A polarizing optical system characterized in that the concave and convex cylindrical lenses are Fresnel lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9605387U JPS643840U (en) | 1987-06-19 | 1987-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9605387U JPS643840U (en) | 1987-06-19 | 1987-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643840U true JPS643840U (en) | 1989-01-11 |
Family
ID=31320856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9605387U Pending JPS643840U (en) | 1987-06-19 | 1987-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7446953B2 (en) | 2006-03-06 | 2008-11-04 | Ricoh Company, Ltd. | Imaging lens, image reading apparatus and image forming apparatus |
-
1987
- 1987-06-19 JP JP9605387U patent/JPS643840U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7446953B2 (en) | 2006-03-06 | 2008-11-04 | Ricoh Company, Ltd. | Imaging lens, image reading apparatus and image forming apparatus |