JPS58165478A - Image sensor - Google Patents

Abstract

PURPOSE:To make the assembling and adjustment of a picture reader easy, to reduce the volume and weight and to decrease the reading time, by cutting out a wafer into a package while plural primary dimension photoelectric converting elements formed on the wafer are connected in parallel. CONSTITUTION:In figure, 14, 15, 16 are the 1st - the 3rd primary dimension photoelectric converting elements in which the three elements formed on the wafer are cut out while being connected in parallel. 17-19 are the 1st - the 3rd optical filter which transmit only red, green and blue colors attached to the elements 14-16. Each converting element is cut out from the wafer 20, the converting element in, e.g., 2048 bits has a length of about 30mm. and both ends are arranged accurately on the wafer 20 and formed in parallel, then the 1st - 3rd converting elements 14-16 forming the packaged image sensor are arranged accurately for both ends and parallelism is maintained. Each converting element reads a screen 1 by dissolving into three primary colors, during running. The assembling and adjustment of each converting element is easy and the reading time is short as considered from the said constitution.

Description

Detailed Description of the Invention (2) Technical Field of the Invention The present invention relates to an image sensor used in a Hiro image reading device, particularly a color image reading device @ (6) Technology O Background The color image reading device is for use in combination printers. It is used in color image input devices and color 7γ scanners, etc., but the customer volume and price of color image reading devices that can be used for these devices is small. And = shutdown is the key technology for the time being.

(Q. Prior Art and Problems) Figure 1 shows the main parts of the 1st conventional example of a color image reading device, where 1 is the screen to be read, and 2 is the screen that reflects red light and transmits green and blue light. 1 dichroic ξ2.3
4 is a second micromirror that reflects blue light and transmits green light; 4 is a first micromirror that forms an image of the red light reflected by the first micromirror 2 on the light-receiving surface of the first image sensor described later. , 5 is a second dichroic lens that reflects nine blue light and forms an image on the light-receiving surface of a second image sensor (described later), and 6 is a second lens that is transmitted by a second dichroic mirror 3 and has a good edge. The third lens focuses the colored light on the light receiving surface of the third DAM-94t sensor, the image sensor 7 receives the red light and generates an electrical signal according to the amount of light received, and the image sensor 8 emits the blue light. a second image sensor that receives light and generates an electric signal according to the amount of received light; 9 is green; a third image sensor that receives light and generates an electric signal according to the amount of received light;
10 is a light source that illuminates the screen l.

FIG. 2 shows a second conventional example of a color image reading device, in which the same reference numerals as those in FIG. A lens for forming an image on a surface; 12 is an optical filter switching unit that includes an optical filter that transmits only red light, an optical filter that transmits only blue light, and an optical filter that transmits only green light, and switches between these by rotation. , 13 is an image sensor that receives the light transmitted through the optical filter switching section and generates an electric signal according to the amount of received light.

First image sensor 7 used in the first conventional example
, the second image sensor 8, the third image sensor 9, and the image sensor 13 used in the second conventional example, as shown in FIG. The original photoelectric conversion element is shown in Figure 1.
Divide and cut out each piece e) One piece at a time: Packaged.

In the first conventional example, three image sensors are used,
For this purpose, three optical systems are provided, so they can be assembled and
14fi is difficult, and the disadvantage is that the volume and weight are large. In addition, the second conventional example uses one image sensor and has one optical system, and has the disadvantage that time is added to the reading time because the light of the three primary colors is emitted in a time-division manner. .

(2) Purpose of the Invention One object of the present invention is to eliminate the above-mentioned drawbacks of the conventional example, and to assemble and 1ia the image reading device when used in the image paper removing device.
It is an object of the present invention to obtain an image sensor that can easily reduce the volumetric weight, reduce the volumetric weight, and shorten the time required for reading and writing.

(G) Structure of the Invention In order to achieve the above-mentioned object, the image sensor of the present invention is manufactured by cutting out a number of one-dimensional photoelectric conversion elements formed on a wafer in parallel and in a pack-1.

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,・:1 Examples of the invention ,,1:,.

Next, the main points W of the present invention will be specifically translated with reference to embodiments shown in the drawings.

FIG. 4 shows an embodiment of the present invention, and 14, 15, and 16 are three one-dimensional photoelectric conversion elements formed on a wafer, connected in parallel, and a first one-dimensional photoelectric conversion element packaged by taking them out. element, a second one-dimensional photoelectric conversion element, a third one-dimensional photoelectric conversion element, 17U an optical filter attached to the first one-dimensional photoelectric conversion element 14 that transmits only red light, and 18 a second one-dimensional photoelectric conversion element; A second optical filter 19 is attached to the one-dimensional photoelectric conversion element 15 and transmits only green light, and a third optical filter 19 is attached to the third one-dimensional photoelectric conversion element 16 and transmits only blue light.

The first one-dimensional photoelectric conversion element 14, the second one-dimensional photoelectric conversion element 15, and the one-dimensional photoelectric conversion element 16i1 of tJ43
: As shown in FIG. 5, it is cut out from the wafer 20. For example, a 2048-bit one-dimensional photoelectric conversion element has approximately 30
The first one-dimensional photoelectric conversion element 14 and the second one-dimensional photoelectric conversion element 14, which constitute the cut out and packaged image sensor, are formed on the wafer 20 with both ends accurately aligned and parallel to each other. The one-dimensional photoelectric conversion collector 15 and the one-dimensional photoelectric conversion element 16 of 1g3 also have their positive JiK ends aligned and kept parallel.

Figure A3m4 shows the main parts of a color image reading device configured using the image sensor according to the present invention, and the same reference numerals as in Figures 1, 2, and 4 indicate the same objects. .

In this configuration, the first primary photoelectric conversion element 14, the second one-dimensional photoelectric conversion element 15, and the third one-dimensional photoelectric conversion element 16 are each reflected from R on the screen l. It receives the blue light reflected from the nine red light and G, which is a good match color, and the blue light reflected from B, and generates an electrical signal according to the amount of light received. Therefore, by performing reading while moving the screen 1 in the direction of the arrow, the screen 1 can be separated into the three primary colors and read.

In such a color image reading device, only one optical system is required. In addition, as mentioned above, the three one-dimensional photoelectric conversion elements 14, 15, and 16 that make up the image sensor are accurately aligned at both ends and kept parallel, so assembly and
wI4i is easy to use, and since it simultaneously receives light from the three primary colors, the reading time is fast.

The above embodiment includes the AT optical filter 17, the twentieth optical filter 18, and the third optical filter 19, and is therefore suitable for a color FjiJ image reading device.
In the figure, the first optical filter 17 and @2 optical filter 1
8 and the third optical filter 19 are used in a monochrome image reading device, and the reading time can be significantly shortened depending on the number of -dimensional photoelectric conversion elements.

C) As described in detail, the present invention provides an image sensor that can be used in an image reading device to facilitate assembly and adjustment, reduce volume and weight, and shorten the reading time. can be obtained.

[Brief explanation of the drawing]

Figures 1 and 2 are conventional examples of the company's color image reading device, Figure 3 is an explanatory diagram of a conventional image sensor, and Figure 4 is the original 'A0
Example 1/5th Et;, 7 shots"0 Example 0 explanatory diagram, and FIG. 6 shows an example of the configuration of a nine-color image reading device using an image sensor according to the present invention, and in these figures, 14 indicates the first Photoelectric conversion element, 15 is the 20th photoelectric conversion element, 16 is the irises 3
The photoelectric conversion element 17 is a first optical filter, 18 is a second optical filter, 19 is an optical filter of [3, and 2o is a wafer0

Claims (1)

[Claims] (1) An image of 4$11 when a plurality of one-dimensional photoelectric conversion elements formed on a sea urchin are cut out in parallel in a row and packaged. (1) The image sensor 0 according to claim 1, characterized in that a plurality of one-dimensional photoelectric conversion elements O are each attached with an optical filter and packaged.