JP2766578B2 - Image input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image input device, and more particularly, to an image input device for capturing a document and transmitting a video signal.

[0002]

2. Description of the Related Art An image input apparatus that captures a document with a video camera and sends out a video signal can conveniently display a flat printed matter or a photograph to a three-dimensional object such as a part on a CRT. This image input device is a Japanese Utility Model 1-11.
No. 7172, No. 1-1117173, No. 1-1
As described in JP-A Nos. 19275 and 1-119276, a main body having a document mounting surface formed on an upper surface and a main circuit board built therein, and a pair of undulating and undulating main bodies. An arm, an imaging head provided on a free end side of the arm and having a built-in CCD, and a pair of illuminators for illuminating the document placing surface.
The photoelectric signal output from the CD is converted into a video signal by the main circuit board. This video signal is output to a CRT via an output terminal and is visualized.

[0003]

In the image input device, image adjustment is performed before shipment from the factory. In the image adjustment, constants of circuits incorporated in the main circuit board are set using an electronic volume. You. However, in the above-described conventional image input device, when performing image adjustment using the electronic volume, it is necessary to expose the main circuit board provided below the document placing surface, so that the test chart document is Since the document cannot be placed on the document placing surface, there is a problem that image adjustment cannot be performed in accordance with an actual use state.

[0004] The present invention has been made in view of the above circumstances,
Image the test chart document placed on the document placing surface,
It is an object of the present invention to provide an image input device capable of performing image adjustment.

[0005]

In order to achieve the above object, an image input apparatus according to the present invention comprises a main circuit board incorporating a control circuit for controlling the driving of a solid-state image sensor and an adjustment circuit used for adjustment during manufacture. Is incorporated in a support section that supports the imaging head section above the main body section. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0006]

FIG. 2 shows an image input apparatus according to the present invention at the time of imaging. The image input device 2 includes a main body 3, an imaging head 4 for imaging a document, a main arm 5 that rotatably supports the imaging head 4, and a pair of illumination units 6 and 7 provided on the main arm 5. Have been. The main arm 5 is provided so as to be able to move up and down with respect to the main body 3, and the lighting units 6 and 7 are provided so as to be slidable and up and down with respect to the main arm 5 via a column 8. When the main arm 5 and the lighting units 6 and 7 are respectively turned down,
Since the image input device 2 is stored in the main body 3 as shown in FIG.

A flat stage 1 is provided on the upper surface of the main body 3.
A document 15 is placed on the stage 14. An operation panel 16 is provided on the front side of the main body 3.
However, on the back side, there are provided bracket portions 17 for pivotally supporting the main arm 5 respectively. The operation panel 16 is provided with various switches such as a main switch 18, a lighting switch 19 for lighting the illumination units 6 and 7, and an imaging switch 20 for imaging. The bracket 17 is provided with a lock mechanism (not shown), and the main arm 5 is stopped at a standing position shown in FIG. 2 or a storage position shown in FIG.

The stage 14 has a two-layer structure as shown in FIG. 1, and has a sheet mounting plate 25 screwed to the main body 3, and is removably mounted on the sheet mounting plate 25. And a platen sheet 26. Therefore, even if the screwing is performed from the document table sheet 26 side, the stage 1
No screw is exposed on the surface of No. 4. Further, the surface of the stage 14 can always be kept clean by exchanging the document table sheet 26. In addition, since the main body 3 employs a honeycomb structure, the strength of the main body 3 against distortion is ensured even if the weight is reduced, so that the flatness of the stage 14 is not impaired.

The main arm 5 is a box-shaped case body 3
0, a back plate 31 screwed to the case main body 30 after image adjustment, and a pair of arm portions 32 and 33 formed on the case main body 30 and supporting the imaging head 4. Locking claws are formed at the ends of the arms 32 and 33, respectively, and these locking claws are fitted into locking portions formed on the main body 3 to lock the main body 3 and the main arm 5. Do. A main circuit board 34 for performing image processing is provided inside the case main body 30. The main circuit board 34 includes a control circuit for controlling driving of a CCD described later,
A video signal processing circuit for converting a photoelectric signal obtained from D into a video signal, an adjustment circuit used for adjusting these circuits at a factory, and the like are incorporated.

The image pickup head 4 has a CCD 37 and this C
The camera has a built-in zoom lens 38 disposed below the CD 37, and converts a captured optical image into a photoelectric signal. This photoelectric signal is transmitted to the main circuit board 34 via a code, and is converted into a video signal by the video signal processing circuit. This video signal is output to the video equipment via the code 39. Reference numeral 40 denotes a power cord.

The illuminating units 6 and 7 are arranged symmetrically with respect to the optical axis of the zoom lens 38, but have the same configuration. Therefore, the description will be made only with respect to the illuminating unit 6 with reference to FIG. The lighting unit 6 includes a lamp 45 that emits daylight,
The lamp 45 includes a reflector 46 for reflecting light emitted obliquely upward from the lamp 45, and a substantially U-shaped protection cover 47 having an opening formed on the lower side. A reflection surface 48 is provided on an outer inner wall of the protective cover 47, and a regulating plate 4 for preventing light from a lamp 45 from being directly applied to the stage 14 is provided on an inner end thereof.
9 are formed. Since the column 8 is attached to the main arm 5 with an appropriate friction, the lighting units 6 and 7 do not slide or rotate carelessly after being set at a desired position.

The operation of the thus configured image input apparatus will be described. The image input device 2 is sent from the assembly process to the inspection process before the back plate 31 is attached as shown in FIG. In the inspection process, the main circuit board 3
The electronic volume 61 and the code 39 are set to C
The power cord 40 is connected to the AC line to the RT monitor 60, and the test chart document 15 is
Place on. Thereafter, the main switch 18, the lighting switch 19, and the imaging switch 20 are sequentially turned on.

When the test chart document 15 is imaged on the CCD 37 via the zoom lens 38, the CCD 37 sends a photoelectric signal to the main circuit board 34. This photoelectric signal is converted into a video signal here, output to the CRT monitor 60 via the code 39, and formed into an image. This CR
While watching the video displayed on the T monitor 60, the user operates the electronic volume 61 to sequentially set the constants of the circuits incorporated in the main circuit board 34. After this setting, the final assembly of screwing the back plate 31 to the case body 30 is performed.

[0014]

As described above, in the image input device of the present invention, the main circuit board is incorporated in the undulating support for supporting the imaging head, so that the test chart for the test chart mounted on the original mounting surface can be used. It is possible to perform image adjustment while capturing a document and displaying the image on a CRT monitor. Further, in the image input device of the present invention, the supporting portion supports the imaging head and accommodates the imaging head in the outline when the camera falls down, so that there is a margin in the thickness. Since the main circuit board is moved from the main body to the support, the main body can be made thinner and the overall thickness can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing an image input device at the time of image adjustment, partially cut away.

FIG. 2 is a perspective view of the image input device during imaging.

FIG. 3 is a perspective view of the image input device when stored.

[Explanation of symbols]

 2 Image Input Device 3 Main Unit 4 Imaging Head 5 Main Arm 6, 7 Illumination Unit 14 Stage 15 Document 34 Main Circuit Board 37 CCD

Claims (1)

(57) [Claims] A main body having an original mounting surface formed on an upper surface thereof;
An image input apparatus comprising: an imaging head unit having a built-in solid-state imaging device for imaging a document; and a support unit provided on the main unit so as to be able to undulate and support the imaging head unit above the main unit in an upright state. An image input device, wherein a main circuit board incorporating a control circuit for controlling the driving of the solid-state imaging device and an adjustment circuit used for adjustment at the time of manufacturing is built in the support portion.