JPS6079866A - Picture inputting device - Google Patents

Abstract

PURPOSE:To input a monochroic picture and a color picture with high definition by one device by inputting a picture from one location while using a different solution in a device using a unidimentional sensor array. CONSTITUTION:Optical systems 203, 204 and sensors 103, 104 for color picture input are arranged at the center and optical systems 201, 202 and sensors 101, 102 for high definition picture input are arranged at both sides, and a monochroic picture and a color picture with high definition are inputted. In case of colcor picture input, color separation filters 505, 506 for two colors' share of the central optical system only are provided, and switching filters 503, 504 are provided to the optical systems 201, 202 for high definition picture input arranged at both the sides for other color and a color picture obtained with said devices is inputted. In case of high definition picture input, the filters used for the color picture input are removed and then the high definition picture is inputted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a device for inputting images, and more particularly to a device for inputting highly detailed monochrome images and color images using the same device.

[Background of the invention]

A conventional image input device has a configuration as shown in FIGS. 1 and 2. FIG. 1 shows a device for inputting high-definition images, and FIG. 2 shows a device for inputting color images.

Generally, CCD (Charged Coupled D
In an image input device using a one-dimensional sensor array of the euice type, the resolution in the main scanning direction is determined by the number of elements in the one-dimensional sensor array. In an image input device using a one-dimensional sensor array, in order to achieve resolution greater than the number of elements in the one-dimensional sensor array, a method of arranging a large number of sensors and lenses in the main scanning direction, as shown in Figure 1, is required. It's getting more intense.

In addition, in a color image input device using a one-dimensional sensor array, R (red) and G (green) are detected by filters.

The B (blue) color separation method has been adopted.

[Purpose of the invention]

An object of the present invention is to provide a device that can input high-definition monochrome images and color images using the same device.

[Summary of the invention]

In order to input high-definition monochrome images and color images using the same device, the present invention arranges an optical system and sensor for color image input in the center, and arranges optical systems and sensors for high-definition image input on both sides. However, it is intended to input high-definition monochrome images and color images. In the case of color image input, only the color separation for two colors is provided in the central optical system, and a filter is installed in the high-definition image input optical system placed on both sides for the other color, and a filter is used to input the color image. .

In the case of high-definition image input, the filter used specifically for color image input is removed and the high-definition image is input using the conventional method.

By reading light at a wavelength that the human eye can resolve with a high-resolution sensor using a sensor for high-definition motion input, and reading light at a wavelength that the human eye can resolve with a sensor placed in the center, a pseudo It also becomes possible to input high-definition color images.

[Embodiments of the invention]

FIG. 3 shows an embodiment of the present invention. (a) is a plan view of the embodiment, and (b) is a sectional view taken along line A-A. 101 and 102
is a one-dimensional sensor array for high-definition image input. 20
1 and 202 are imaging lenses for forming an original image on the sensor array.

A switching filter 5'0 is installed in front of the imaging lenses 201 and 202.
Place 3,504. 300 is a fluorescent lamp for illuminating the original, and 301 and 302 are fluorescent lamps on the elevation view.

400 is a manuscript. a one-dimensional sensor array 101 with the same number of elements as the sensors 103 and 104 arranged in the center;
102, the resolution of high-definition image input is twice that of color image input when the document width is set to the same condition. 1
03 and 104 are one-dimensional sensors for color image input.
It is an array. For example, 103 is for R (red) input, 1
04 is for B (evening) input. 203 and 204 are imaging lenses for forming an original image on the sensor array. Color separation filters 505 and 506 are arranged in front of each imaging lens 203 and 204.

Combining lenses 203 and 204 project the full width image of document 400 onto the full element width of one-dimensional sensor arrays 103 and 104.

Combining lenses 201 and 202 project a half-width image of document 400 onto the full element width of one-dimensional sensor arrays 101 and 102.

The original 400 moves in the direction of the arrow in FIG. 3(b), and sub-scanning is performed.

FIG. 4 shows another embodiment of the invention. FIG. 4 is a front view of this embodiment. The main scanning system and lens of this embodiment,
The arrangement of the filters is the same as the implementation column in FIG. The difference is the sub-scanning method. In this sub-scanning method, the document 400 is fixed, and the fluorescent lamps 301 and 302, the optical path changing mirror 603, and the 90° mirrors 601 and 602 are moved to perform sub-scanning.

(Refer to Japanese Patent Application No. 147532/1983 by the same inventor) No. 4
Fluorescent lamps 301, 302 and optical path changing mirror 60 in the figure
If the ratio of the moving speed of 3 and the moving speed of the 90° mirrors 601 and 602 is 2:l, the distance from the original to the lens will be constant and the focus of the image will not shift.

However, similarly to the case of FIG. 3, in the embodiment of FIG. 4 as well, the sensors and lenses and filters are fixed.

The switching filters 503 and 504 are made of a filter for a specific wavelength range and transparent glass. When reading color images,
When a filter for a specific wavelength range is used to read high-definition monochrome images, transparent glass is used. These two types of filters are switched by driving a motor or a magnet (both not shown) by an electric signal.

〔Effect of the invention〕

According to the present invention, it is possible to input high-definition monochrome images and color images using the same device.

Since the same device has a high-definition image input function and a color image input function, the high-definition image input function can also serve as part of the color image input function, and the overall configuration can be simplified.

In addition, the system uses a high-definition image input function to read light in a wavelength range for which the human eye can resolve high, and a color image input function placed in the center to read light in a wavelength range for which the human eye has low resolution. It is also possible to input high-definition color images in a pseudo manner.

[Brief explanation of the drawing]

FIG. 1 shows a conventional high-definition image input device, in which (a) shows a plan view and (b) shows an elevation view. FIG. 2 shows a conventional color image input device, (a) is a plan view thereof, (b)
) indicates an elevation. Figure 3 shows an embodiment of the present invention (
(a) shows a plan view thereof, and (b) shows a sectional view taken along line A-A. Fourth
The figure is a sectional view showing another embodiment of the present invention. 101.102...One-dimensional sensor for high-definition image input
Array, 103, 104... One-dimensional sensor array for color image input, 201, 202, 203° 204...
・Imaging lens, 301, 302...Fluorescent lamp, 400・
...Manuscript, 503.50'4...Switching filter, er
1 Figure 2 Figure 3 Mouth (α) lθ4 4th (2) oip

Claims (1)

[Claims] 1. A document is imaged on a one-dimensional photoelectric conversion element through an imaging lens, main scanning is performed by the one-dimensional photoelectric conversion element, and sub-scanning is performed by a mechanical sub-scanning mechanism. In an image input device that scans the entire surface of a document and converts the optical image into an electrical signal, images of the same location on the document are formed on a one-dimensional photoelectric conversion element using imaging systems with different magnifications. An image input device that inputs images at different resolutions. 2. An image input device according to claim 1, characterized in that filters having different spectral characteristics are inserted into optical paths of imaging systems having different magnifications. 3.% Permissible In the description of claim 2, the image is characterized in that an image input section with a low resolution is arranged in the center, and two image input sections with a higher resolution than the center are arranged on both sides of the image input section. input device. 4.% Permissible scope In the description of claim 3, the central imaging system is used to read the image signals in the red wavelength range and the back wavelength range, and the imaging systems on both sides are used to read the image signals in the green wavelength range. An image input device characterized by reading an image signal of. 5. An image input device according to claim 4, characterized in that the spectral characteristics of filters inserted into both imaging systems are switched.