JPH02100375U - - Google Patents
Info
- Publication number
- JPH02100375U JPH02100375U JP887589U JP887589U JPH02100375U JP H02100375 U JPH02100375 U JP H02100375U JP 887589 U JP887589 U JP 887589U JP 887589 U JP887589 U JP 887589U JP H02100375 U JPH02100375 U JP H02100375U
- Authority
- JP
- Japan
- Prior art keywords
- color image
- optical path
- reading device
- line image
- color
- 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 2
- 238000010586 diagram Methods 0.000 description 9
- 230000003595 spectral effect Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
Landscapes
- Facsimile Heads (AREA)
- Facsimile Scanning Arrangements (AREA)
- Color Image Communication Systems (AREA)
Description
第１図は本考案のカラー画像読取り装置の原理
図、第２図及び第３図Ｂは円柱レンズを結像光束
中に挿入した場合の光束の形状を示す原理図、第
３図Ａは円柱レンズが無いときの結像光束中の各
点における光束の断面図、第４図は円柱レンズと
ラインイメージセンサの配置関係の１例を示す斜
視図、第５図は従来のカラー画像読取り装置のセ
ンサの代表的な分光感度分布図、第６図はカラー
ＴＶカメラの分光感度分布図、第７図は被写体面
からの反射光の１例のスペクトル分布図、第８図
は第７図示の反射光を本考案装置で読取つたとき
のラインイメージセンサ面上の総合的分光感度分
布図、第９図、第１１図、及び第１３図はリレー
レンズの開口の各種形状に対する焦線上広がり方
向での強度分布を示すスペクトル分布図、第１０
図及び第１２図はリレーレンズの開口の代表的形
状を示す原理図である。
２…リレーレンズ、３…分光プリズム、４…結
像レンズ、５…円柱レンズ、６…ラインイメージ
センサ、９…カラー画像読取り装置、Ｍ，Ｍ１，
Ｍ２…マスク。
Figure 1 is a principle diagram of the color image reading device of the present invention, Figures 2 and 3B are principle diagrams showing the shape of the light beam when a cylindrical lens is inserted into the imaging light beam, and Figure 3A is a cylinder. FIG. 4 is a cross-sectional view of the light beam at each point in the imaging light beam when there is no lens, FIG. 4 is a perspective view showing an example of the arrangement relationship between the cylindrical lens and the line image sensor, and FIG. A typical spectral sensitivity distribution diagram of a sensor, Figure 6 is a spectral sensitivity distribution diagram of a color TV camera, Figure 7 is a spectral distribution diagram of an example of reflected light from the subject surface, and Figure 8 is a diagram of the reflection shown in Figure 7. Figures 9, 11, and 13 show the overall spectral sensitivity distribution diagrams on the line image sensor surface when light is read by the device of the present invention, in the direction of spread on the focal line for various shapes of the aperture of the relay lens. Spectral distribution diagram showing intensity distribution, No. 10
1 and 12 are principle diagrams showing typical shapes of the aperture of the relay lens. 2... Relay lens, 3... Spectroscopic prism, 4... Imaging lens, 5... Cylindrical lens, 6... Line image sensor, 9... Color image reading device, M, M 1 ,
M2 ...Mask.
Claims (1)
し、少なくとも３列に並べたラインイメージセン
サに導いてカラー画像を読取る装置において、上
記被写体面からラインイメージセンサまでの光路
中に、色情報の読取り精度を向上させるための円
柱レンズを配置して構成したことを特徴とするカ
ラー画像読取り装置。 (2) 上記光路中に、リレーレンズの開口の形を
可変できるマスクを更に配置して構成したことを
特徴とする実用新案登録請求の範囲第１項記載の
カラー画像読取り装置。[Claims for Utility Model Registration] (1) In a device that reads a color image by dividing light reflected from a subject surface using a prism and guiding it to line image sensors arranged in at least three rows, the line image sensor 1. A color image reading device characterized in that a cylindrical lens is disposed in an optical path to improve reading accuracy of color information. (2) The color image reading device according to claim 1, which is a registered utility model, characterized in that a mask that can change the shape of the aperture of the relay lens is further arranged in the optical path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP887589U JPH0628852Y2 (en) | 1989-01-27 | 1989-01-27 | Color image reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP887589U JPH0628852Y2 (en) | 1989-01-27 | 1989-01-27 | Color image reader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02100375U true JPH02100375U (en) | 1990-08-09 |
| JPH0628852Y2 JPH0628852Y2 (en) | 1994-08-03 |
Family
ID=31215123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP887589U Expired - Lifetime JPH0628852Y2 (en) | 1989-01-27 | 1989-01-27 | Color image reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628852Y2 (en) |
-
1989
- 1989-01-27 JP JP887589U patent/JPH0628852Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0628852Y2 (en) | 1994-08-03 |
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