JPH0247539U - - Google Patents
Info
- Publication number
- JPH0247539U JPH0247539U JP12516288U JP12516288U JPH0247539U JP H0247539 U JPH0247539 U JP H0247539U JP 12516288 U JP12516288 U JP 12516288U JP 12516288 U JP12516288 U JP 12516288U JP H0247539 U JPH0247539 U JP H0247539U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- test pattern
- reading
- output signal
- reading element
- 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 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Testing Of Optical Devices Or Fibers (AREA)
Description
第１図および第２図は、それぞれ本考案に係る
レンズ取付位置計測装置の機構部を概念的に示し
た平面図および側面図、第３図はテストパターン
の構成と、このテストパターンに基づくＣＣＤの
出力信号波形を示した図、第４図は結像用レンズ
の作用を示した図、第５図は合焦位置と読取画素
数との関係を例示したグラフ、第６図は制御部の
構成を示したブロツク図、第７図は制御部のマイ
クロプロセツサの処理内容を示したフローチヤー
ト、第８図は従来のレンズ位置調整に使用されて
いるテストチヤートを示した図である。
１０……機構部、１５……テストパターン、１
７……可動台、１８……ステツピングモータ、１
９……ボールスクリユー、２０……ＣＣＤ、２４
……結像用レンズ、３０……制御部、３１……プ
ロセツサ、３４……メモリ。
1 and 2 are a plan view and a side view conceptually showing the mechanical part of the lens attachment position measuring device according to the present invention, respectively, and FIG. 3 is a configuration of a test pattern and a CCD based on this test pattern. Figure 4 is a diagram showing the action of the imaging lens, Figure 5 is a graph illustrating the relationship between the focus position and the number of pixels read, and Figure 6 is a graph showing the relationship between the focus position and the number of pixels read. FIG. 7 is a block diagram showing the configuration, FIG. 7 is a flowchart showing the processing contents of the microprocessor of the control section, and FIG. 8 is a test chart used for conventional lens position adjustment. 10... Mechanism section, 15... Test pattern, 1
7...Movable base, 18...Stepping motor, 1
9...Ball screw, 20...CCD, 24
...imaging lens, 30...control unit, 31...processor, 34...memory.
Claims (1)
びテストパターンと、 このテストパターンの像を上記読取素子上に結
像させる結像用レンズを、上記読取素子とテスト
パターン間を結ぶラインに沿つて移動させるレン
ズ移動手段と、 このレンズ移動手段によつて上記レンズを移動
させ、その移動中における上記読取素子の出力信
号に基づいて該出力信号の最大値を求める手段と
、 上記最大値に基づき、該最大値の出力信号が得
られる合焦位置に上記レンズが位置決めされるよ
うに上記レンズ移動手段を作動させる手段と、 上記合焦位置に上記レンズが位置決めされたと
きの上記読取素子の出力信号に基づき、上記テス
トパターンの予設定区間についての読取画素数を
求める手段と、 上記読取画素数に基づいて、原稿読取装置に対
する上記レンズの取付位置を求める手段と を備えることを特徴とするレンズの取付位置計
測装置。[Claims for Utility Model Registration] A reading element and a test pattern that are arranged facing each other at a predetermined interval, and an imaging lens that forms an image of the test pattern on the reading element, the reading element and the test pattern. a lens moving means for moving the lens along a line connecting the lenses; and means for moving the lens by the lens moving means and determining a maximum value of the output signal based on the output signal of the reading element during the movement. , means for operating the lens moving means so that the lens is positioned at a focus position where an output signal of the maximum value is obtained based on the maximum value; and when the lens is positioned at the focus position; means for determining the number of reading pixels for a preset section of the test pattern based on the output signal of the reading element; and means for determining the mounting position of the lens with respect to the document reading device based on the number of reading pixels. A lens mounting position measuring device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12516288U JPH0247539U (en) | 1988-09-27 | 1988-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12516288U JPH0247539U (en) | 1988-09-27 | 1988-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0247539U true JPH0247539U (en) | 1990-03-30 |
Family
ID=31375523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12516288U Pending JPH0247539U (en) | 1988-09-27 | 1988-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0247539U (en) |
-
1988
- 1988-09-27 JP JP12516288U patent/JPH0247539U/ja active Pending
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