WO2018198340A1 - Unité d'ajustement de foyer et dispositif de lecture d'image - Google Patents

Unité d'ajustement de foyer et dispositif de lecture d'image Download PDF

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Publication number
WO2018198340A1
WO2018198340A1 PCT/JP2017/017021 JP2017017021W WO2018198340A1 WO 2018198340 A1 WO2018198340 A1 WO 2018198340A1 JP 2017017021 W JP2017017021 W JP 2017017021W WO 2018198340 A1 WO2018198340 A1 WO 2018198340A1
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WO
WIPO (PCT)
Prior art keywords
unit
reading
carrier
lens
document
Prior art date
Application number
PCT/JP2017/017021
Other languages
English (en)
Japanese (ja)
Inventor
翔吾 宮野
暁 岩山
Original Assignee
株式会社Pfu
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社Pfu filed Critical 株式会社Pfu
Priority to JP2019515041A priority Critical patent/JP6731546B2/ja
Priority to PCT/JP2017/017021 priority patent/WO2018198340A1/fr
Publication of WO2018198340A1 publication Critical patent/WO2018198340A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/107—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with manual scanning

Definitions

  • the technology of the present disclosure relates to a focus adjustment unit and an image reading apparatus.
  • An overhead type image reading apparatus that can read an image of a page while turning the page without separating the binding original is known.
  • the thickness of the original of the bound original changes as the pages are turned.
  • Such an image reading apparatus needs to include a focus adjustment unit that adjusts the focus because the distance between the image reading unit and the reading surface of the original varies as the thickness of the original changes.
  • the focus adjustment unit adjusts the focus by moving a lens disposed between the document and the image reading unit (see Patent Documents 1 to 3).
  • Such a focus adjustment unit has a problem that it is necessary to reduce backlash in order to move the lens with high accuracy, and the manufacturing cost increases.
  • the overhead type image reading apparatus also has a problem that the manufacturing cost increases because it includes such a focus adjustment unit.
  • the disclosed technique has been made in view of the above points, and an object thereof is to provide a focus adjustment unit and an image reading apparatus that reduce manufacturing costs.
  • the focus adjustment unit includes a lens unit to which a lens is fixed, two pins fixed to the lens unit, a support member that supports the two pins so that the lens unit can move, and the support. And a lens barrel that moves the two pins relative to the support member so that the lens moves for focus adjustment by moving relative to the member.
  • the lens unit is supported by the support member when another part different from the part where the two pins are fixed contacts the support member.
  • the disclosed focus adjustment unit and image reading apparatus can reduce the manufacturing cost.
  • FIG. 1 is a side view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 2 is a front view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 3 is a perspective view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 4 is a perspective view illustrating the image reading apparatus according to the first exemplary embodiment when the right document table is disposed at the V-shaped document right holding position and the left document table is disposed at the V-shaped document left retaining position.
  • FIG. 5 is a front view illustrating the image reading apparatus according to the first exemplary embodiment when the right document table is disposed at the V-shaped document right holding position and the left document table is disposed at the V-shaped document left retaining position.
  • FIG. 1 is a side view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 2 is a front view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 3 is a perspective view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 4 is
  • FIG. 6 is a side view showing the image reading apparatus according to the first embodiment when the right document table is arranged at the V-shaped document right holding position and the left document table is arranged at the V-shaped document left holding position.
  • FIG. 7 is a cross-sectional view showing the reading unit.
  • FIG. 8 is a side view illustrating the image reading apparatus according to the first embodiment when the carrier unit is disposed at the reading start position.
  • FIG. 9 is a side view illustrating the image reading apparatus according to the first exemplary embodiment when the carrier unit is disposed at the reading end position.
  • FIG. 10 is a longitudinal sectional view showing a part of the reading unit when the carrier unit is arranged at the reading start position.
  • FIG. 11 is a cross-sectional view showing a part of the reading unit.
  • FIG. 12 is a longitudinal sectional view showing a part of the reading unit when the carrier unit is arranged at the reading end position.
  • FIG. 13 is a front view showing the reading unit.
  • FIG. 14 is a front view showing the reading unit when the right optical unit is arranged at the V-character original left reading position and the left optical unit is arranged at the V-character original right reading position.
  • FIG. 15 is a front view showing the right optical unit.
  • FIG. 16 is a perspective view showing the reading optical axis plane of the image reading unit, the outer lighting optical axis plane of the outer lighting unit, and the central lighting optical axis plane of the central lighting unit.
  • FIG. 17 is a perspective view illustrating the image reading unit and the focus adjustment unit.
  • FIG. 18 is a cross-sectional view showing the image reading unit and the focus adjustment unit.
  • FIG. 19 is a perspective view showing a lens unit and two pins.
  • FIG. 20 is a perspective view showing a support member, a lens unit, and two pins.
  • FIG. 21 is a side view showing the image reading unit and the focus adjustment unit.
  • FIG. 22 is a side view illustrating the image reading apparatus according to the first embodiment.
  • FIG. 23 is a side view showing the reading unit.
  • FIG. 24 is a perspective view showing a document in which the three-dimensional shape of the reading surface is detected by the three-dimensional detection sensor.
  • FIG. 25 is a front view showing the presser portion.
  • FIG. 26 is a side view showing the presser portion.
  • FIG. 25 is a front view showing the presser portion.
  • FIG. 27 is a front view showing a presser portion in which a V-shaped presser is attached to a presser carrier.
  • FIG. 28 is a side view showing the presser portion in which the V-shaped presser is attached to the presser carrier.
  • FIG. 29 is a perspective view showing an optical unit adjustment jig used when manufacturing the right optical unit.
  • FIG. 30 is a side view showing the optical unit fixing portion.
  • FIG. 31 is a perspective view showing a carrier adjustment jig used when manufacturing a carrier unit.
  • FIG. 32 is a rear view showing the carrier unit attached to the carrier adjustment jig.
  • FIG. 33 is a front view showing a carrier adjustment jig to which a carrier unit is attached.
  • FIG. 34 is a side view showing the carrier adjustment jig.
  • FIG. 35 is a block diagram illustrating the image reading apparatus according to the first embodiment.
  • FIG. 36 is a flowchart showing the operation of the image reading apparatus.
  • FIG. 37 is a cross-sectional view showing the focus adjustment unit arranged so that the optical axis of the lens is horizontal.
  • FIG. 38 is a side view illustrating the focus adjustment unit according to the second embodiment.
  • FIG. 1 is a side view illustrating the image reading apparatus 1 according to the first embodiment.
  • the image reading apparatus 1 includes a document table 2, a reading unit 3, a reading unit holding unit 5, and a presser unit 6.
  • the document table 2 is placed on the installation surface 7 on which the image reading apparatus 1 is installed.
  • the reading unit 3 is disposed substantially above the document table 2.
  • FIG. 2 is a front view showing the image reading apparatus 1 according to the first embodiment.
  • the reading unit holding unit 5 includes a right side holding unit 11 and a left side holding unit 12.
  • the right holding part 11 is formed in a band shape and is formed in a hollow shape.
  • the right holding unit 11 has one end fixed to a part of the document table 2 and the other end fixed to a part of the reading unit 3.
  • the left holding part 12 is formed in a band shape and is formed in a hollow shape.
  • the left holding unit 12 has one end fixed to a part of the document table 2 and the other end fixed to a part of the reading unit 3.
  • the reading unit holding unit 5 holds the reading unit 3 via the right side holding unit 11 and the left side holding unit 12 so that the reading unit 3 is disposed substantially above the document table 2.
  • FIG. 3 is a perspective view showing the image reading apparatus 1 according to the first embodiment.
  • the document table 2 includes a document table body 14, a right document table 15, and a left document table 16.
  • the document table body 14 is formed in a box shape, and a storage space (not shown) is formed inside.
  • the document table main body 14 is placed on the installation surface 7.
  • the right document table 15 is formed in a plate shape, and a right placement surface 17 is formed.
  • the right mounting surface 17 is formed flat.
  • the right document table 15 is supported by the document table body 14 so as to be rotatable about the right document table rotation shaft 18 so as to be arranged at the flat document right holding position or the V-shaped document right holding position.
  • the right document table rotation shaft 18 is parallel to the right placement surface 17, and is parallel to the installation surface 7 when the document table main body 14 is placed on the installation surface 7.
  • the right placement surface 17 is parallel to the installation surface 7 when the right document table 15 is disposed at the flat document right holding position.
  • the left manuscript table 16 is formed in a plate shape, and a left placing surface 19 is formed.
  • the left mounting surface 19 is formed flat.
  • the left document table 16 is supported by the document table main body 14 so as to be rotatable about the left document table rotation shaft 20 so as to be disposed at the flat document left document holding position or the V-shaped document left document holding position.
  • the left document table rotation shaft 20 is parallel to the left placement surface 19 and parallel to the right document table rotation shaft 18.
  • the left placement surface 19 is parallel to the installation surface 7 when the left document table 16 is arranged at the flat document left holding position.
  • the right placement surface 17 and the left placement surface 19 are parallel to the installation surface 7 when the right document table 15 is arranged at the flat document right holding position and the left document table 16 is arranged at the flat document left holding position. Is generally along the same plane.
  • FIG. 4 is a perspective view illustrating the image reading apparatus 1 according to the first embodiment when the right document table 15 is disposed at the V-shaped document right holding position and the left document table 16 is disposed at the V-character left retaining position.
  • the right placement surface 17 is along a plane that is inclined with respect to the installation surface 7 when the right document table 15 is placed at the V-shaped document right holding position.
  • the right placement surface 17 has the end of the right placement surface 17 farther from the left document table 16 than the end of the right placement surface 17 closer to the left document table 16. It inclines with respect to the installation surface 7 so that it may become near.
  • the left placing surface 19 has an end of the left placing surface 19 far from the right document table 15 of the left placing surface 19 when the left document table 16 is disposed at the left holding position of the V-shaped document. It is inclined with respect to the installation surface 7 so as to be closer to the reading unit 3 than the end on the side closer to the right document table 15.
  • the angle formed by the left placement surface 19 and the installation surface 7 is approximately 30 degrees.
  • FIG. 5 is a front view showing the image reading apparatus 1 according to the first embodiment when the right document table 15 is disposed at the V-shaped document right holding position and the left document table 16 is disposed at the V-shaped document left holding position.
  • the document table 2 further includes a right document table stopper 21 and a left document table stopper 22.
  • the right document table stopper 21 prevents the right document table 15 from rotating about the right document table rotation shaft 18 when the right document table 15 is arranged at the flat document right holding position or the V-shaped document right holding position.
  • the right platen 15 is fixed to the platen body 14.
  • the right document table stopper 21 further releases the right document table 15 from being fixed to the document table main body 14 so that the right document table 15 rotates about the right document table rotation shaft 18 by a user operation.
  • the left document table stopper 22 prevents the left document table 16 from rotating about the left document table rotation shaft 20 when the left document table 16 is disposed at the flat document left document holding position or the V-shaped document left document holding position.
  • the left platen 16 is fixed to the platen body 14.
  • the left document table stopper 22 further cancels the fixing of the left document table 16 to the document table main body 14 so that the left document table 16 rotates about the left document table rotation axis 20 by a user operation. To do.
  • FIG. 6 is a side view showing the image reading apparatus 1 according to the first embodiment when the right document table 15 is disposed at the V-shaped document right holding position and the left document table 16 is disposed at the V-shaped document left holding position.
  • the reading unit holding unit 5 includes the right side platen 15 so that the right side platen 15 and the left side platen 16 are not disposed between the right side holding unit 11 and the left side holding unit 12. And one side of the left platen 16. That is, the right holding unit 11 is disposed on the back side (right side in FIG. 6) from the right document table 15. One end of the right holding unit 11 is fixed to a portion of the document table main body 14 on the back side of the right document table 15.
  • the left holding unit 12 is disposed on the back side of the left document table 16 in the same manner as the right holding unit 11, and one end thereof is fixed to a portion on the back side of the left document table 16 in the document table main body unit 14. . That is, the region where the right placement surface 17 and the left placement surface 19 are arranged can be separated by one plane 23 from the region where the reading unit holding unit 5 is arranged.
  • FIG. 7 is a cross-sectional view showing the reading unit 3.
  • the reading unit 3 includes a right carrier cover 31, a right carrier shaft 32, a left carrier cover 33, a left carrier shaft 34, a carrier unit 35, and a top plate 36.
  • the right carrier cover 31 forms a part of the outer shell of the reading unit 3 on the right holding unit 11 side.
  • the right carrier cover 31 is fixed to the other end of the right holding portion 11 opposite to one end fixed to the document table main body portion 14.
  • the right carrier shaft 32 is formed as a cylindrical bar.
  • the right carrier shaft 32 is disposed inside the right carrier cover 31 so as to be along a straight line parallel to the right document table rotation shaft 18.
  • the left carrier cover 33 forms a part of the outer shell of the reading unit 3 on the left holding unit 12 side.
  • the left carrier cover 33 is fixed to the other end of the left holding portion 12 opposite to one end fixed to the document table body 14.
  • the left carrier shaft 34 is formed as a cylindrical bar.
  • the left carrier shaft 34 is disposed inside the left carrier cover 33 so as to be along another straight line parallel to the straight line along which the right carrier shaft 32 is along.
  • the carrier unit 35 includes a carrier casing 37, a right slider 38, and a left slider 39.
  • the carrier housing 37 is formed in a box shape and is disposed between the right carrier shaft 32 and the left carrier shaft 34.
  • the right slider 38 is fixed to one end of the carrier housing 37 on the right carrier shaft 32 side.
  • the right slider 38 surrounds a part of the right carrier shaft 32 and is translated along the right carrier shaft 32 by being guided by the right carrier shaft 32.
  • the left slider 39 is fixed to the end of the carrier housing 37 on the left carrier shaft 34 side, that is, fixed to the other end of the carrier housing 37 opposite to one end to which the right slider 38 is fixed. Has been.
  • the left slider 39 is placed on the left carrier shaft 34 and guided along the left carrier shaft 34, thereby translating along the left carrier shaft 34.
  • the carrier housing 37 moves in parallel with the right carrier cover 31 and the left carrier cover 33 by the right slider 38 being guided by the right carrier shaft 32 and the left slider 39 being guided by the left carrier shaft 34. That is, the carrier unit 35 is movable through the reading unit holding unit 5 so as to be movable in parallel with the right document table rotating shaft 18 and the left document table rotating shaft 20 so as to be arranged at the reading start position or the reading end position. 2 is supported. At this time, the direction in which the carrier unit 35 moves in parallel is parallel to the reading plane along the reading surface facing the reading unit 3 among the documents placed on the right document table 15 and placed on the left document table 16. Of the original to be read is parallel to the reading plane along the reading surface facing the reading unit 3.
  • the top plate 36 is made of a material that transmits visible light, and has a generally plate shape.
  • the top plate 36 is disposed between the right carrier cover 31 and the left carrier cover 33 so as to cover the upper part of the region in which the carrier unit 35 moves, and forms a part of the outer shell of the reading unit 3.
  • the top plate 36 is supported by the right carrier cover 31 and the left carrier cover 33.
  • FIG. 8 is a side view showing the image reading apparatus 1 according to the first embodiment when the carrier unit 35 is arranged at the reading start position.
  • the carrier unit 35 is arranged at the reading start position as shown in FIG. 8 by moving in parallel to the back side.
  • FIG. 9 is a side view illustrating the image reading apparatus 1 according to the first embodiment when the carrier unit 35 is disposed at the reading end position.
  • the carrier unit 35 is arranged at the reading end position as shown in FIG. 9 by moving parallel to the front side.
  • FIG. 10 is a longitudinal sectional view showing a part of the reading unit 3 when the carrier unit 35 is arranged at the reading start position.
  • the reading unit 3 further includes a left carrier shaft adjusting unit 41, a front pulley 42, a rear pulley 43, a belt 44, a carrier driving unit 45, and a flexible cable portion 46.
  • the left carrier axis adjustment unit 41 is disposed on the front side of the left carrier cover 33. One end of the front side of the left carrier shaft 34 is fixed to the left carrier shaft adjustment portion 41. One end on the back side of the left carrier shaft 34 is fixed to the left carrier cover 33. For this reason, the direction of the left carrier shaft 34 is changed when the left carrier shaft adjusting portion 41 moves relative to the left carrier cover 33.
  • the left carrier shaft adjusting portion 41 is fixed to the left carrier cover 33 via a fastening member (not shown).
  • the fastening member include a bolt and a nut. That is, one end on the front side of the left carrier shaft 34 is indirectly fixed to the left carrier cover 33 via the left carrier shaft adjustment portion 41.
  • the front pulley 42 is disposed in the vicinity of the front end of the left carrier shaft 34 in the left carrier cover 33.
  • the back pulley 43 is disposed in the vicinity of the end on the back side of the left carrier shaft 34 in the left carrier cover 33.
  • the belt 44 is formed from a loop-shaped band. The belt 44 is disposed inside the left carrier cover 33 and is bridged between the front pulley 42 and the rear pulley 43. Further, a part of the belt 44 is joined to the left slider 39.
  • the carrier driving unit 45 is formed of, for example, a motor.
  • the carrier drive unit 45 moves the belt 44 so that the front pulley 42 and the back pulley 43 rotate. Since the left slider 39 is joined to the belt 44, the carrier unit 35 moves in parallel with the document table 2 when the belt 44 moves. That is, the carrier driving unit 45 moves the belt 44 in parallel to move the carrier unit 35 along the right carrier shaft 32 and the left carrier shaft 34.
  • the carrier driving unit 45 further detects a position where the carrier unit 35 is disposed.
  • the flexible cable portion 46 is formed in a thin strip shape and is bendable.
  • the flexible cable portion 46 has one end fixed to the carrier unit 35 and the other end fixed to the left carrier cover 33.
  • FIG. 11 is a cross-sectional view showing a part of the reading unit 3. As shown in FIG. 11, the flexible cable portion 46 is disposed below the left carrier shaft 34 and the belt 44 in the left carrier cover 33. That is, the left carrier cover 33 covers the left carrier shaft 34, the front pulley 42, the rear pulley 43, the belt 44, and the flexible cable portion 46.
  • the flexible cable portion 46 is used to connect information devices so that information can be transmitted.
  • FIG. 12 is a longitudinal sectional view showing a part of the reading unit 3 when the carrier unit 35 is arranged at the reading end position.
  • the flexible cable portion 46 has another shape different from the shape when the carrier unit 35 is disposed at the reading start position. Is formed. That is, the flexible cable portion 46 is deformed when the carrier unit 35 moves with respect to the document table 2.
  • the reading unit 3 further includes a right carrier axis adjusting unit (not shown).
  • the right carrier shaft adjustment unit is attached to the right carrier cover 31 in the same manner as the left carrier shaft adjustment unit 41.
  • the right carrier shaft adjusting portion is disposed on the front side of the right carrier cover 31.
  • One end on the front side of the right carrier shaft 32 is fixed to the right carrier shaft adjusting portion.
  • One end on the far side of the right carrier shaft 32 is fixed to the right carrier cover 31.
  • the right carrier shaft adjusting portion is fixed to the right carrier cover 31 via a fastening member (not shown). Examples of the fastening member include a bolt and a nut. That is, one end on the near side of the right carrier shaft 32 is indirectly fixed to the right carrier cover 31 via the right carrier shaft adjustment portion.
  • FIG. 13 is a front view showing the reading unit 3.
  • the carrier unit 35 includes a right optical unit 51 and a left optical unit 52.
  • the right optical unit 51 is disposed in a region on the right holding unit 11 side in the carrier housing 37.
  • the right optical unit 51 is supported by the carrier housing 37 so as to be rotatable about the right optical unit rotation shaft 54 so as to be disposed at the flat document right reading position or the V-shaped document left reading position.
  • the right optical unit rotation shaft 54 is parallel to the left document table rotation shaft 20.
  • the right optical unit 51 faces the right document table 15 when it is disposed at the flat document right reading position.
  • the direction 56 in which the right optical unit 51 faces when the right optical unit 51 is disposed at the flat document right reading position indicates that the right document table 15 is located when the right document table 15 is disposed at the flat document right holding position. It is perpendicular to the right mounting surface 17.
  • the left optical unit 52 is disposed in a region on the left holding unit 12 side in the carrier housing 37.
  • the left optical unit 52 is supported by the carrier housing 37 so as to be rotatable about the left optical unit rotation shaft 55 so as to be arranged at the flat document left reading position or the V-shaped document right reading position.
  • the left optical unit rotation shaft 55 is parallel to the right document table rotation shaft 18.
  • the left optical unit 52 faces the left document table 16 when it is disposed at the flat document left reading position.
  • the direction 57 in which the left optical unit 52 faces when the left optical unit 52 is disposed at the flat document left reading position indicates that the left document table 16 is aligned when the left document table 16 is disposed at the flat document left holding position. It is perpendicular to the left mounting surface 19.
  • FIG. 14 is a front view showing the reading unit 3 when the right optical unit 51 is arranged at the left reading position of the V-shaped original and the left optical unit 52 is arranged at the right reading position of the V-shaped original.
  • the right optical unit 51 faces the left document table 16 when it is disposed at the V-document original left-side reading position.
  • the direction 58 in which the right optical unit 51 faces when the right optical unit 51 is arranged at the left side reading position of the V-shaped document indicates that the left side document is located when the left document table 16 is arranged at the left side holding position of the V-shaped document. It is perpendicular to the left mounting surface 19 of the table 16.
  • the left optical unit 52 faces the right document table 15 when it is arranged at the V-character document right reading position.
  • a direction 59 in which the left optical unit 52 faces when the left optical unit 52 is disposed at the V-shaped original right reading position indicates that the right original is positioned when the right original table 15 is disposed at the V-shaped original right holding position. It is perpendicular to the right mounting surface 17 of the table 15.
  • FIG. 15 is a front view showing the right optical unit 51.
  • the right optical unit 51 includes an optical unit frame 61, an image reading unit 62, a focus adjustment unit 63, and an illumination unit 64.
  • the optical unit frame 61 is supported by the carrier housing 37 so as to be rotatable about the right optical unit rotation shaft 54.
  • the image reading unit 62 captures an image showing a subject arranged in a region intersecting the reading optical axis 67.
  • the image reading unit 62 is arranged so that the reading optical axis 67 intersects the right optical unit rotation axis 54 and is fixed to the optical unit frame 61.
  • the focus adjustment unit 63 is disposed in a region where the image reading unit 62 is directed so as to intersect the reading optical axis 67.
  • the illumination unit 64 includes an outer illumination unit 65 and a central illumination unit 66.
  • the outer illumination unit 65 illuminates a region that intersects the outer illumination optical axis 68.
  • the outer illumination unit 65 is disposed in a region on the right holding unit 11 side of the focus adjustment unit 63 so that the outer illumination optical axis 68 is parallel to the reading optical axis 67, and optically passes through a fastening member (not shown). It is fixed to the unit frame 61.
  • the central illumination unit 66 illuminates a region that intersects the central illumination optical axis 69.
  • the central illumination unit 66 is disposed in the region on the left holding unit 12 side of the focus adjustment unit 63, that is, the focus adjustment unit 63 is disposed between the outer illumination unit 65 and the central illumination unit 66. Have been placed.
  • the direction in which the outer illumination unit 65 and the central illumination unit 66 are arranged is perpendicular to the right optical unit rotation axis 54 and perpendicular to the reading optical axis 67.
  • the central illumination optical axis 69 is not parallel to the reading optical axis 67 but is inclined with respect to the reading optical axis 67 so that the central illumination unit 66 faces the reading optical axis 67.
  • the angle formed by the central illumination optical axis 69 and the reading optical axis 67 is exemplified by 5.5 degrees.
  • the central illumination unit 66 is fixed to the optical unit frame 61 via a fastening member (not shown).
  • FIG. 16 is a perspective view showing a reading optical axis plane 71 of the image reading unit 62, an outer side lighting optical axis plane 72 of the outer side lighting unit 65, and a central side lighting optical axis plane 73 of the central side lighting unit 66.
  • the image reading unit 62 is arranged so as to capture an image of a subject using light that travels along a reading optical axis plane 71 including a reading optical axis 67. An image of the reading line region 74 that intersects the reading optical axis plane 71 is taken.
  • the reading optical axis plane 71 is parallel to the direction in which the focus adjustment unit 63, the outer illumination unit 65, and the central illumination unit 66 are arranged.
  • the outer illumination unit 65 illuminates the reading line region 74 imaged by the image reading unit 62 by emitting light that travels along the outer illumination optical axis plane 72 including the outer illumination optical axis 68.
  • the central illumination unit 66 illuminates the reading line region 74 imaged by the image reading unit 62 by emitting light that travels along the central illumination optical axis plane 73 including the central illumination optical axis 69.
  • the reading optical axis plane 71, the outer illumination optical axis plane 72, and the central illumination optical axis plane 73 are included in the same plane and overlap each other. That is, the outer illumination unit 65 illuminates the reading line region 74 imaged by the image reading unit 62 by emitting light that travels parallel to the reading optical axis plane 71.
  • the central illumination unit 66 illuminates the reading line region 74 imaged by the image reading unit 62 by emitting light that travels parallel to the reading optical axis plane 71.
  • FIG. 17 is a perspective view showing the image reading unit 62 and the focus adjustment unit 63.
  • the focus adjustment unit 63 includes a support member 201, a lens unit 202, a lens barrel 203, a lens barrel drive unit 204, two pins 205 to 206, and two urging units 207 to 208. It has.
  • FIG. 18 is a cross-sectional view showing the image reading unit 62 and the focus adjustment unit 63.
  • the support member 201 includes an image reading unit support unit 211 and a lens unit support tube 212.
  • the image reading unit support unit 211 has an image reading unit side internal space 213 formed therein.
  • the lens unit support tube 212 is formed in a cylindrical shape, and a lens side internal space 214 is formed inside.
  • the lens unit support cylinder 212 is disposed such that the lens side internal space 214 is connected to the image reading unit side internal space 213, and is integrally joined to the image reading unit support unit 211.
  • the lens unit support cylinder 212 has a contact surface 215 formed on a part of the inner side facing the image reading unit side internal space 213 on the back side.
  • the image reading section 62 includes a CCD (Charge Coupled Device) substrate 216 and a CCD image sensor 217.
  • the CCD substrate 216 is formed in a plate shape.
  • the CCD image sensor 217 is mounted on the CCD substrate 216 and fixed to the CCD substrate 216.
  • the CCD image sensor 217 is arranged in the image reading unit side internal space 213 so that the reading optical axis 67 overlaps the central axis of the cylinder formed by the lens unit support cylinder 212, and the CCD substrate 216 is arranged. It is fixed to the image reading unit support unit 211.
  • the lens unit 202 includes a lens support cylinder 221 and a lens 222.
  • the lens support tube 221 is formed in a cylindrical shape that is slightly smaller than the lens unit support tube 212 of the support member 201.
  • the lens 222 is disposed inside the lens support tube 221 and fixed to the lens support tube 221 so that the optical axis of the lens 222 overlaps the central axis of the cylinder formed by the lens support tube 221.
  • the lens unit 202 is formed so that the center of gravity 225 of the lens unit 202 overlaps the optical axis of the lens 222.
  • the lens unit 202 is disposed in the lens-side internal space 214 so that the optical axis of the lens 222 substantially overlaps the reading optical axis 67.
  • the lens support cylinder 221 has a contact point 223 formed on a part on the back side of the outer peripheral surface facing the inner surface of the lens unit support cylinder 212.
  • the lens barrel 203 is formed in a cylindrical shape that is slightly larger than the lens unit support tube 212 of the support member 201.
  • the lens barrel 203 is disposed so as to surround the lens unit support tube 212 of the support member 201 and so that the central axis of the cylinder formed by the lens barrel 203 overlaps the reading optical axis 67.
  • the lens barrel 203 is supported by the support member 201 so as not to move parallel to the reading optical axis 67, and is supported by the support member 201 so as to be rotatable about the reading optical axis 67.
  • the lens barrel drive unit 204 is formed of, for example, a motor and is supported by the support member 201.
  • the lens barrel driving unit 204 rotates the lens barrel 203 around the reading optical axis 67.
  • FIG. 19 is a perspective view showing the lens unit 202 and the two pins 205 to 206.
  • the first pin 205 of the two pins 205 to 206 is fixed to the lens support tube 221 so as to protrude from the outer peripheral surface of the lens support tube 221 of the lens unit 202, as shown in FIG. Yes.
  • the second pin 206 protrudes from a portion of the outer peripheral surface of the lens support tube 221 opposite to the portion where the first pin 205 is fixed. It is fixed to.
  • the lens unit rotation shaft 224 connecting the two pins 205 to 206 is orthogonal to the central axis of the cylinder formed by the lens support cylinder 221 and orthogonal to the optical axis of the lens 222. Further, as shown in FIG. 18, the two pins 205 to 206 are formed so that the lens unit rotation shaft 224 does not pass through the center of gravity 225 of the lens unit 202.
  • FIG. 20 is a perspective view showing the support member 201, the lens unit 202, and two pins 205 to 206.
  • the lens unit support tube 212 of the support member 201 is formed with two linear grooves corresponding to the two pins 205 to 206.
  • the first linear groove 226 corresponding to the first pin 205 of the two linear grooves is formed in a portion of the lens unit support tube 212 that faces the outer illumination unit 65.
  • the first linear groove 226 is formed along a straight line that is parallel to the reading optical axis 67.
  • the second linear groove corresponding to the second pin 206 of the two linear grooves is formed in a portion of the lens unit support tube 212 facing the central illumination unit 66 and is a straight line parallel to the reading optical axis 67. It is formed along.
  • the two pins 205 to 206 are fitted in two linear grooves, respectively. That is, the first pin 205 is fitted in the first linear groove 226.
  • the second pin 206 is fitted in a second straight groove corresponding to the second pin 206 of the two straight grooves.
  • the lens unit 202 is parallel to the reading optical axis 67 so that the two pins 205 to 206 are fitted in the two linear grooves, respectively, so that the lens unit 202 approaches or moves away from the image reading unit 62. It is supported by the support member 201 so as to be movable.
  • FIG. 21 is a side view showing the image reading unit 62 and the focus adjustment unit 63.
  • the lens barrel 203 as shown in FIG. 21, two spiral grooves corresponding to the two pins 205 to 206 are formed. Each of the two spiral grooves is formed along a spiral having the reading optical axis 67 as a central axis.
  • the two pins 205 to 206 are fitted in the two spiral grooves, respectively. That is, the first pin 205 is fitted into the first spiral groove 227 corresponding to the first pin 205 of the two spiral grooves.
  • the second pin 206 is fitted in a second spiral groove corresponding to the second pin 206 of the two spiral grooves.
  • the lens unit 202 has the two pins 205 to 206 fitted in the two spiral grooves, respectively, so that the reading optical axis 67 with respect to the support member 201 when the lens barrel 203 does not rotate with respect to the support member 201. Is supported by the lens barrel 203 so as not to move in parallel with the lens.
  • the lens unit 202 is supported by the support member 201 so as to be rotatable about the lens unit rotation shaft 224 by fitting two pins 205 to 206 into two spiral grooves and two linear grooves, respectively. .
  • the two urging units 207 to 208 correspond to the two pins 205 to 206.
  • the first urging unit 207 corresponding to the first pin 205 of the two urging units 207 to 208 includes a plate 231 and a spring 232.
  • the plate 231 is generally formed in a band shape, and an action point portion 233 and a force point portion 234 are formed.
  • the action point portion 233 is disposed between the focus adjustment unit 63 and the outer illumination unit 65, and is disposed on the image reading unit 62 side of the first pin 205.
  • the force point portion 234 is disposed on the back side of the focus adjustment unit 63 so as not to be disposed between the focus adjustment unit 63 and the outer illumination unit 65.
  • the plate 231 is supported by the support member 201 so as to be rotatable about the plate rotation shaft 235.
  • the plate rotation shaft 235 is disposed between the action point portion 233 and the force point portion 234.
  • the plate rotation axis 235 is parallel to the direction in which the outer illumination unit 65 and the central illumination unit 66 are arranged, that is, perpendicular to the reading optical axis 67 and perpendicular to the right optical unit rotation axis 54.
  • the spring 232 is formed of an elastic body, and is disposed on the back side of the focus adjustment unit 63 so as not to be disposed between the focus adjustment unit 63 and the outer illumination unit 65.
  • One end of the spring 232 is fixed to the force point portion 234 of the plate 231, and the other end is fixed to the support member 201.
  • the spring 232 gives an elastic force to the force point portion 234 of the plate 231 so that the action point portion 233 of the plate 231 presses a portion of the first pin 205 facing the image reading portion 62. That is, the first urging unit 207 applies a force to the first pin 205 so that the first pin 205 is pressed against the end surface of the first spiral groove 227 far from the image reading unit 62.
  • the second urging unit 208 corresponding to the second pin 206 applies a force to the second pin 206 in the same manner as the first urging unit 207. That is, the second urging portion 208 includes a plate 236 and a spring 237 as shown in FIG.
  • the plate 236 is disposed between the focus adjustment unit 63 and the center side illumination unit 66 and is disposed on the image reading unit 62 side of the second pin 206.
  • the spring 237 is disposed on the back side of the focus adjustment unit 63 so as not to be disposed between the focus adjustment unit 63 and the central illumination unit 66.
  • the spring 237 applies an elastic force to the plate 236, so that the plate 236 presses the second pin 206 against the end surface of the second spiral groove far from the image reading unit 62.
  • the lens unit 202 when the lens barrel 203 rotates relative to the support member 201 around the reading optical axis 67, the two pins 205 to 206 are guided by the two spiral grooves, respectively, whereby the reading optical axis 67.
  • the two pins 205 to 206 are supported by the support member 201, the lens barrel 203, and the two urging portions 207 to 208, whereby the support member 201 is rotatable about the lens unit rotation shaft 224.
  • the lens barrel 203 In the focus adjustment unit 63, a gap is further formed between the lens unit 202 and the support member 201.
  • the lens unit rotation shaft 224 is centered so that the contact point 223 contacts the contact surface 215 or the contact point 223 moves away from the contact surface 215. (See FIG. 18).
  • the focus adjustment unit 63 is further formed so that the optical axis of the lens 222 overlaps the reading optical axis 67 when the contact point 223 contacts the contact surface 215.
  • the optical unit frame 61 is formed with a front projection 238 and a back projection 239.
  • the near side protrusion 238 protrudes from the near side member of the optical unit frame 61 toward the near side.
  • the near-side protrusion 238 is held by the carrier housing 37 and supported by the carrier housing 37 so as to be rotatable about the right optical unit rotation shaft 54.
  • the back side protrusion 239 protrudes from the back side member of the optical unit frame 61 to the back side.
  • the back projection 239 is held by the carrier housing 37 and supported by the carrier housing 37 so as to be rotatable about the right optical unit rotation shaft 54.
  • the optical unit frame 61 is supported by the carrier housing 37 so as to be rotatable about the right optical unit rotation shaft 54 by the front side projection 238 and the back side projection 239 being rotatably supported by the carrier housing 37. ing. That is, the straight line connecting the front side protrusion 238 and the back side protrusion 239 coincides with the right optical unit rotation shaft 54.
  • the support member 201 of the focus adjustment unit 63 is indirectly fixed to the optical unit frame 61 via the fixing member 243. That is, the fixing member 243 is fixed to the optical unit frame 61. The support member 201 is fixed to the fixing member 243. At this time, the image reading unit 62 is indirectly fixed to the optical unit frame 61 by being fixed to the support member 201 of the focus adjustment unit 63. The image reading unit 62 and the focus adjustment unit 63 are arranged so that the reading optical axis 67 is not perpendicular to the right optical unit rotation axis 54, and the reading optical axis 67 is at a predetermined position with respect to the optical unit frame 61. Has been placed.
  • the reading optical axis 67 is not perpendicular to the right optical unit rotation axis 54, so that the reading optical axis plane 71 is the normal 241 of the right mounting surface 17 or the left mounting surface 19. It is inclined with respect to. That is, the image reading unit 62 and the focus adjustment unit 63 are arranged so that the reading angle 242 formed by the normal line 241 and the reading optical axis plane 71 does not become 0 degree.
  • the right optical unit 51 has a reading angle 242 when the right document table 15 is disposed at the flat document right holding position and the right optical unit 51 is disposed at the flat document right reading position. It is formed to be 20 degrees.
  • the right optical unit 51 further has a reading angle 242 when the left document table 16 is disposed at the V-shaped document left holding position and when the right optical unit 51 is disposed at the V-document left reading position. It is formed to be 20 degrees.
  • the reading optical axis 67 is inclined with respect to the normal line 241
  • a vertical line passing through the center of gravity 225 of the lens unit 202 is aligned with the lens unit rotation axis 224 when the installation surface 7 is horizontal. Arranged so as not to intersect. That is, the first graphic obtained by orthogonally projecting the center of gravity 225 of the lens unit 202 onto the horizontal plane is arranged so as not to overlap the second graphic obtained by orthogonally projecting the lens unit rotation shaft 224 onto the horizontal plane.
  • the left optical unit 52 is formed in the same manner as the right optical unit 51. That is, the left optical unit 52 includes an optical unit frame 61, an image reading unit 62, a focus adjustment unit 63, and an illumination unit 64.
  • the illumination unit 64 includes an outer illumination unit 65 and a central illumination unit 66.
  • the outer side illumination unit 65 and the center side illumination unit 66 each illuminate the reading line area 74 imaged by the image reading unit 62 by emitting light that travels parallel to the reading optical axis plane 71.
  • the left optical unit 52 has a reading angle 242 of 20 degrees when the left document table 16 is arranged at the flat document left holding position and the left optical unit 52 is arranged at the flat document left reading position. So that it is formed.
  • the left optical unit 52 further has a reading angle 242 when the right original table 15 is arranged at the V-shaped original right holding position and when the left optical unit 52 is arranged at the V-character right reading position. It is formed to be 20 degrees.
  • FIG. 22 is a side view showing the image reading apparatus 1 according to the first embodiment.
  • the reading optical axis plane 71 of the right optical unit 51 or the left optical unit 52 is, as shown in FIG. 22, when the carrier unit 35 is placed at the reading start position. Crosses the end on the far side.
  • the reading optical axis plane 71 of the right optical unit 51 or the left optical unit 52 intersects the front end of the right document table 15 or the left document table 16 when the carrier unit 35 is disposed at the reading end position. .
  • the carrier unit 35 Since the reading optical axis plane 71 is inclined with respect to the vertical line, the carrier unit 35 is not arranged on the upper end of the near side of the document table 2 when arranged at the reading end position.
  • the document table 2 is arranged on the far side from the upper end of the near side. That is, the carrier unit 35 is not disposed on the upper end of the near side of the document table 2 when moving between the reading start position and the reading end position.
  • the outer shell of the reading unit 3, the right carrier shaft 32, and the left carrier shaft 34 are arranged on the front side of the document table 2 because the carrier unit 35 is not disposed above the front end of the document table 2. There is no need to be placed on top of the edge. Since the reading unit 3 is not disposed above the near side area of the document table 2, the user can work in handling the object in the space between the document table 2 and the reading unit 3. For example, an object can be easily handled in the space between the document table 2 and the reading unit 3.
  • the carrier unit 35 can be arranged at a plurality of reading positions between the reading start position and the reading end position by moving in parallel with the document table 2.
  • the plurality of reading positions are arranged at equal intervals between the reading start position and the reading end position.
  • the reading surface of the document placed on the document table 2 that faces the reading unit 3 has a plurality of right reading line regions corresponding to a plurality of reading positions and a plurality of left reading line regions corresponding to a plurality of reading positions. And filled with.
  • One right reading line region corresponding to a certain reading position among the plurality of right reading line regions is picked up by the image reading unit 62 of the right optical unit 51 when the carrier unit 35 is arranged at the reading position.
  • One left reading line region corresponding to a certain reading position among the plurality of left reading line regions is picked up by the image reading unit 62 of the left optical unit 52 when the carrier unit 35 is arranged at the reading position. Indicates the area.
  • FIG. 23 is a side view showing the reading unit 3.
  • the reading unit 3 further includes a three-dimensional detection sensor 75.
  • the three-dimensional detection sensor 75 includes a laser oscillator 76 and a camera 77.
  • the laser oscillator 76 is disposed at the front end of the reading unit 3 and is supported by the outer shell of the reading unit 3.
  • the laser oscillator 76 emits a line laser traveling along a plurality of laser planes.
  • the plurality of laser planes include a plurality of intersecting lines where the plurality of laser planes intersect the right placement surface 17 when the right document table 15 is disposed at the flat document right holding position or the V-shaped document right holding position. It arrange
  • the plurality of laser planes further includes a plurality of intersections where the plurality of laser planes and the left placement surface 19 intersect when the left document table 16 is disposed at the flat document left holding position or the V-shaped document left holding position. They are arranged so that the lines are arranged at a predetermined interval.
  • a line laser that travels along one laser plane 78 of the plurality of laser planes is emitted by a line laser that travels along a plurality of other laser planes different from the laser plane 78 of the plurality of laser planes. Radiated at another timing different from the timing.
  • the camera 77 is disposed at the back end of the reading unit 3, faces the document table 2, and is fixed to the outer shell of the reading unit 3. The camera 77 captures an image of a document placed on the document table 2.
  • FIG. 24 is a perspective view showing a document 79 on which the three-dimensional shape of the reading surface is detected by the three-dimensional detection sensor 75.
  • the laser oscillator 76 emits a line laser that travels along the laser plane 78 when the document 79 is placed on the document table 2, so that the line laser is applied to the document 79. Irradiate.
  • a portion 80 of the document 79 irradiated with the line laser diffuses the line laser.
  • the camera 77 captures an image of the document 79 when the document 79 is placed on the document table 2 and the document 79 is irradiated with a line laser.
  • the image of the portion 80 is projected so that the portion 80 can be distinguished from other portions because the portion 80 diffusely reflects the line laser.
  • the three-dimensional position where the portion 80 is arranged is calculated based on the position where the laser plane 78 is arranged and the position where the portion irradiated with the line laser in the document 79 is projected on the image by the triangulation method. Is done.
  • the three-dimensional shape of the reading surface of the document 79 facing the reading unit 3 includes the positions of a plurality of laser planes along which the line laser is aligned and a plurality of positions corresponding to the plurality of laser planes in the image captured by the camera 77. Based on the above. A position corresponding to a laser plane among the plurality of positions indicates a position where a portion of the document 79 irradiated with a line laser traveling along the laser plane is projected on the image.
  • FIG. 25 is a front view showing the presser unit 6.
  • FIG. 26 is a side view showing the presser unit 6.
  • the presser unit 6 includes a right presser guide 81, a left presser guide 82, a presser carrier 83, a flat presser 84, and a flat presser mounting portion 85.
  • the right presser guide 81 is formed in a rod shape, and is arranged along a straight line parallel to the presser moving direction 86 as shown in FIG.
  • the left presser guide 82 is formed in a rod shape and is arranged along a straight line parallel to the presser moving direction 86.
  • the presser moving direction 86 is parallel to the reading optical axis plane 71 when the right optical unit 51 is disposed at the flat document right reading position and the left optical unit 52 is disposed at the flat document left reading position.
  • the presser moving direction 86 is further perpendicular to the direction in which the right optical unit 51 and the left optical unit 52 are arranged.
  • the presser carrier 83 is supported by the right presser guide 81 and the left presser guide 82 so as to be movable in parallel with the presser moving direction 86 so as to be disposed at the retracted position or the close contact position.
  • the presser carrier 83 When the presser carrier 83 is disposed at the retracted position, the presser carrier 83 moves to the contact position by approaching the document table 2, and when disposed at the contact position, the presser carrier 83 moves to the retracted position by approaching the reading unit 3. .
  • the flat presser 84 is formed of a material that transmits visible light, and is formed in a flat plate shape.
  • the flat presser mounting portion 85 is joined to the flat presser 84 and fixed to the flat presser 84.
  • the flat presser attachment portion 85 attaches the flat presser 84 to the presser carrier 83 or removes the flat presser 84 from the presser carrier 83.
  • the flat presser attachment portion 85 fixes the flat presser 84 to the presser carrier 83 when the flat presser 84 is attached to the presser carrier 83.
  • the flat presser 84 is arranged along a plane parallel to the installation surface 7.
  • the presser unit 6 further includes a lock pin (not shown).
  • the lock pin is fixed to the right presser guide 81 and the left presser guide 82 so that the presser carrier 83 does not move when the presser carrier 83 is disposed at the retracted position or the close contact position.
  • the lock pin releases the presser carrier 83 from being fixed to the right presser guide 81 and the left presser guide 82 so that the presser carrier 83 is moved by a user operation.
  • the presser section 6 further includes a right presser guide cover 87 and a left presser guide cover 88 as shown in FIG.
  • the right presser guide cover 87 covers an area where the right presser guide 81 is disposed, and separates an area where the right presser guide 81 is disposed from the outside of the image reading apparatus 1.
  • the left presser guide cover 88 covers an area where the left presser guide 82 is disposed, and separates an area where the left presser guide 82 is disposed from the outside of the image reading apparatus 1.
  • the presser unit 6 further includes a weight 91, a pulley 93, a wire 92, and a weight cover 94.
  • the weight 91 is formed so that the weight of the weight 91 is approximately equal to the sum of the weight of the flat presser 84, the weight of the flat presser mounting portion 85, and the weight of the presser carrier 83.
  • the pulley 93 is supported by the right side holding part 11 and the left side holding part 12. One end of the wire 92 is joined to the weight 91, the other end is joined to the presser carrier 83, and is hung on the pulley 93. For this reason, the weight 91 moves up and down when the presser carrier 83 moves between the retracted position and the contact position.
  • the weight cover 94 is made of a material that transmits visible light.
  • the weight cover 94 covers an area where the weight 91 moves, separates the area where the weight 91 moves from the document table 2, and separates the area where the weight 91 moves from the outside of the image reading apparatus 1.
  • FIG. 27 is a front view showing the presser unit 6 in which the V-shaped presser 95 is attached to the presser carrier 83.
  • FIG. 28 is a side view showing the presser portion 6 in which the V-shaped presser 95 is attached to the presser carrier 83.
  • the presser unit 6 further includes a V-shaped presser 95 and a V-shaped presser mounting portion 96.
  • the V-shaped presser 95 includes a right presser 97 and a left presser 98.
  • the right presser 97 is made of a material that transmits visible light, and is formed in a flat plate shape.
  • the left presser 98 is made of a material that transmits visible light, and is formed in a flat plate shape.
  • the left presser 98 is joined to the right presser 97 so that a plane along which the left presser 98 and a plane along the right presser 97 intersect at a predetermined angle.
  • the V-shaped presser mounting portion 96 is joined to the right-side presser 97 and the left-side presser 98, that is, fixed to the V-shaped presser 95 as shown in FIG.
  • the V-shaped presser attaching portion 96 attaches the V-shaped presser 95 to the presser carrier 83 or removes the V-shaped presser 95 from the presser carrier 83.
  • the V-shaped presser mounting portion 96 fixes the V-shaped presser 95 to the presser carrier 83 when the V-shaped presser 95 is mounted on the presser carrier 83.
  • the V-shaped presser 95 is attached to the presser carrier 83 via the V-shaped presser mounting portion 96.
  • the right presser 97 When the right document table 15 is placed at the V-shaped document right holding position, the right presser 97 is placed on the right side. It is formed so as to be parallel to the surface 17.
  • the V-shaped presser 95 is attached to the presser carrier 83 via the V-shaped presser mounting portion 96.
  • the left presser 98 When the left document base 16 is placed at the V-shaped document left holding position, the left presser 98 is placed on the left side. It is formed so as to be parallel to the surface 19.
  • FIG. 29 is a perspective view showing an optical unit adjustment jig 101 used when the right optical unit 51 is manufactured.
  • the optical unit adjustment jig 101 includes a base portion 102, an optical unit fixing portion 103, and a virtual subject portion 104.
  • the base portion 102 is formed in a rod shape.
  • the optical unit fixing part 103 is fixed to a part of the base part 102.
  • the virtual subject part 104 is fixed to a part of the base part 102.
  • FIG. 30 is a side view showing the optical unit fixing portion 103.
  • the optical unit fixing portion 103 includes a front side protrusion fixing portion 105 and a back side protrusion fixing portion 106.
  • the front-side protrusion fixing portion 105 fixes the front-side protrusion 238 of the optical unit frame 61 of the right optical unit 51 to the base portion 102.
  • the back-side protrusion fixing portion 106 fixes the back-side protrusion 239 of the optical unit frame 61 of the right optical unit 51 to the base portion 102.
  • the optical unit frame 61 is fixed to the base unit 102 by fixing the front side protrusion 238 by the front side protrusion fixing part 105 and fixing the back side protrusion 239 by the back side protrusion fixing part 106.
  • the optical unit adjustment jig 101 is configured so that the image reading unit 62 appropriately captures an image of the virtual subject unit 104 when the appropriately manufactured optical unit frame 61 of the right optical unit 51 is fixed to the optical unit fixing unit 103. To be formed.
  • the user moves the image reading unit 62 so that the image reading unit 62 appropriately captures the image of the virtual subject unit 104 when the optical unit frame 61 of the right optical unit 51 is fixed to the optical unit fixing unit 103. Arrange properly.
  • the user fixes the image reading unit 62 to the optical unit frame 61 by fixing the support member 201 of the focus adjustment unit 63 to the optical unit frame 61 in a state where the image reading unit 62 is appropriately arranged.
  • the user further sets the outer lighting unit 65 so that the outer lighting unit 65 appropriately illuminates the virtual subject unit 104. Arrange properly.
  • the user fixes the outer lighting unit 65 to the optical unit frame 61 via a fastening member (not shown) in a state where the outer lighting unit 65 is appropriately disposed.
  • the user further arranges the central illumination unit 66 appropriately so that the central illumination unit 66 appropriately illuminates the virtual subject unit 104. To do.
  • the user fixes the central illumination unit 66 to the optical unit frame 61 via a fastening member (not shown) in a state where the central illumination unit 66 is appropriately arranged.
  • the image reading unit 62, the outer illumination unit 65, and the central illumination unit are fixed to the optical unit frame 61 by fixing the image reading unit 62, the outer illumination unit 65, and the central illumination unit 66 in this way.
  • the unit 66 is appropriately arranged.
  • the right optical unit 51 is configured such that the image reading unit 62, the outer illumination unit 65, and the central illumination unit 66 are appropriately arranged, so that the document placed on the document table 2 when mounted on the carrier unit 35. Is appropriately illuminated, and an image of the original can be appropriately captured.
  • the left optical unit 52 is manufactured in the same manner as the right optical unit 51. That is, in the left optical unit 52, the image reading unit 62, the outer illumination unit 65, and the central illumination unit 66 are fixed to the optical unit frame 61 using the optical unit adjustment jig 101. In the left optical unit 52, the image reading unit 62 and the illumination unit 64 are appropriately arranged by fixing the image reading unit 62 and the illumination unit 64 to the optical unit frame 61 using the optical unit adjustment jig 101. . The left optical unit 52 appropriately arranges the image reading unit 62 and the illumination unit 64 to appropriately illuminate the document placed on the document table 2 when mounted on the carrier unit 35. A document image can be appropriately captured.
  • FIG. 31 is a perspective view showing the carrier adjustment jig 111 used when the carrier unit 35 is manufactured.
  • the carrier adjustment jig 111 includes a gantry 112, a carrier fixing portion 113, and a virtual subject portion 114.
  • the carrier fixing portion 113 includes a right slider fixing portion 115 and a left slider fixing portion 116.
  • the right slider fixing portion 115 is formed in the same shape as a part of the right carrier shaft 32.
  • the right slider fixing portion 115 is fixed to the gantry 112.
  • the right slider fixing portion 115 fixes the right slider 38 of the carrier unit 35.
  • the left slider fixing portion 116 is formed in the same shape as a part of the left carrier shaft 34.
  • the left slider fixing portion 116 is fixed to the gantry 112.
  • the left slider fixing portion 116 fixes the left slider 39 of the carrier unit 35.
  • the virtual subject portion 114 is disposed below the gantry 112 and is fixed to the gantry 112.
  • FIG. 32 is a rear view showing the carrier unit 35 attached to the carrier adjustment jig 111.
  • the carrier unit 35 further includes a right optical unit back side protrusion support part 117 and a left optical unit back side protrusion support part 118.
  • the right optical unit back side protrusion support portion 117 is disposed on the back side of the carrier housing 37 and is fixed to the carrier housing 37.
  • the right optical unit rear projection support part 117 grips the rear projection 239 of the right optical unit 51 and rotatably supports the rear projection 239 of the right optical unit 51.
  • the left-side optical unit back projection support portion 118 is disposed on the back side of the carrier housing 37 and is fixed to the carrier housing 37.
  • the left-side optical unit back-side protrusion support part 118 holds the back-side protrusion 239 of the left-side optical unit 52 and rotatably supports the back-side protrusion 239 of the left-side optical unit 52.
  • FIG. 33 is a front view showing the carrier adjustment jig 111 to which the carrier unit 35 is attached.
  • the carrier unit 35 further includes a right optical unit rotation shaft adjustment unit 121, a right fastening member 122, a left optical unit rotation shaft adjustment unit 123, and a left fastening member 124.
  • the right optical unit rotation axis adjustment unit 121 is disposed on the front side of the carrier housing 37.
  • the right optical unit rotation axis adjusting unit 121 grips the front projection 238 of the right optical unit 51 and rotatably supports the front projection 238 of the right optical unit 51. That is, the right optical unit rotation shaft adjusting unit 121 moves relative to the carrier housing 37 to change the direction of the right optical unit rotation shaft 54.
  • the right side fastening member 122 is formed of a bolt and a nut, and is fastened to fix the right side optical unit rotation axis adjusting unit 121 to the carrier housing 37.
  • the left optical unit rotation axis adjustment unit 123 is disposed on the front side of the carrier housing 37.
  • the left optical unit rotation axis adjusting unit 123 grips the front projection 238 of the left optical unit 52 and rotatably supports the front projection 238 of the left optical unit 52. That is, the left optical unit rotation shaft adjusting unit 123 moves relative to the carrier housing 37 to change the direction of the left optical unit rotation shaft 55.
  • the left fastening member 124 is formed of a bolt and a nut and fastened to fix the left optical unit rotation axis adjusting unit 123 to the carrier housing 37.
  • FIG. 34 is a side view showing the carrier adjustment jig 111.
  • the virtual subject portion 114 has a virtual reading line region 125 formed therein.
  • the virtual read line region 125 is formed so that the read optical axis plane 71 of the right optical unit 51 and the left optical unit 52 is in the virtual read line region 125 when the appropriately prepared carrier unit 35 is fixed to the carrier fixing unit 113. It is formed to intersect. That is, the carrier adjustment jig 111 is configured such that when the appropriate carrier unit 35 is fixed to the carrier fixing unit 113, the right optical unit 51 and the left optical unit 52 appropriately display the image of the virtual reading line region 125 of the virtual subject unit 114. It forms so that it may image.
  • the user captures an image of the virtual subject unit 114 using the image reading unit 62 of the right optical unit 51 when the carrier unit 35 is fixed to the carrier fixing unit 113.
  • the user moves the right optical unit rotation axis adjustment unit 121 when the virtual reading line region 125 is not properly projected on the image captured using the image reading unit 62 of the right optical unit 51.
  • the user captures the image of the virtual subject unit 114 again using the image reading unit 62 of the right optical unit 51 after the right optical unit rotation axis adjusting unit 121 is fixed at another position of the carrier housing 37.
  • the user moves the right optical unit rotation axis adjustment unit 121 and moves the image of the right optical unit 51 until the virtual reading line region 125 is appropriately projected on the image captured using the image reading unit 62 of the right optical unit 51.
  • the imaging using the reading unit 62 is repeatedly executed.
  • the right optical unit rotation axis adjustment unit 121 is fixed to the carrier housing 37 using the carrier adjustment jig 111, so that the right optical unit 51 is appropriately disposed with respect to the carrier housing 37.
  • the user captures an image of the virtual subject unit 114 using the image reading unit 62 of the left optical unit 52 when the carrier unit 35 is fixed to the carrier fixing unit 113.
  • the user moves the left optical unit rotation axis adjustment unit 123 when the virtual reading line region 125 is not properly projected on the image captured using the image reading unit 62 of the left optical unit 52.
  • the user takes an image of the virtual subject unit 114 again using the image reading unit 62 of the left optical unit 52.
  • the user moves the left optical unit rotation axis adjustment unit 123 and moves the image of the left optical unit 52 until the virtual read line area 125 is appropriately projected on the image captured using the image reading unit 62 of the left optical unit 52.
  • the imaging using the reading unit 62 is repeatedly executed.
  • the left optical unit rotation axis adjusting unit 123 is fixed to the carrier housing 37 using the carrier adjusting jig 111, so that the left optical unit 52 is appropriately arranged with respect to the carrier housing 37.
  • Adjustment method of right carrier shaft 32 and left carrier shaft 34 When the user adjusts the direction of the left carrier shaft 34, first, the user loosens the fastening member that fixes the left carrier shaft adjustment portion 41 to the left carrier cover 33. The user changes the direction of the left carrier shaft 34 to a predetermined direction by moving the left carrier shaft adjustment unit 41 after the fastening member is loosened. The user fastens the fastening member in a state where the left carrier shaft 34 is oriented in a predetermined direction, and fixes the left carrier shaft adjustment portion 41 to the left carrier cover 33.
  • the user can adjust the orientation of the right carrier shaft 32 in the same manner as the left carrier shaft 34. That is, the user first loosens the fastening member that fixes the right carrier shaft adjustment portion to the right carrier cover 31. After the fastening member is loosened, the user changes the direction of the right carrier shaft 32 to a predetermined direction by moving the right carrier shaft adjustment unit. The user fastens the fastening member with the right carrier shaft 32 facing the predetermined direction, and fixes the right carrier shaft adjustment portion to the right carrier cover 31.
  • the image reading apparatus 1 can appropriately arrange the right carrier axis 32 and the left carrier axis 34 by providing the left carrier axis adjustment unit 41 and the right carrier axis adjustment unit.
  • the image reading apparatus 1 can appropriately move the carrier unit 35 even when a manufacturing error occurs in the dimensions of parts by appropriately arranging the right carrier shaft 32 and the left carrier shaft 34.
  • FIG. 35 is a block diagram illustrating the image reading apparatus 1 according to the first embodiment.
  • the image reading apparatus 1 further includes an optical unit driving unit 130 and a device control unit 131.
  • the optical unit driving unit 130 is formed of, for example, a motor.
  • the optical unit driving unit 130 is disposed approximately at the center of the inside of the carrier housing 37 and is disposed between the right optical unit 51 and the left optical unit 52.
  • the optical unit driving unit 130 rotates the right optical unit 51 around the right optical unit rotation shaft 54 and rotates the left optical unit 52 around the left optical unit rotation shaft 55.
  • the optical unit driving unit 130 further detects the position where the right optical unit 51 is disposed, and detects the position where the left optical unit 52 is disposed.
  • the apparatus control unit 131 is disposed in a storage space formed inside the document table body 14.
  • the device control unit 131 is connected to the carrier unit 35 via a carrier cable so as to be able to transmit information.
  • the carrier cable includes a flexible cable portion 46 and includes a fixed cable portion not shown.
  • the fixed cable portion is disposed along the left holding portion 12 and is disposed inside the hollow portion of the left holding portion 12.
  • the device control unit 131 is further connected to the carrier driving unit 45 and the three-dimensional detection sensor 75 via another cable so as to be able to transmit information.
  • the apparatus control unit 131 is a computer, and includes a CPU (Central Processing Unit) 132, a storage unit 133, a communication unit 134, a reading start switch 135, and a display unit 136.
  • the CPU 132 executes information processing by executing a computer program installed in the apparatus control unit 131 and controls the storage unit 133, the communication unit 134, the reading start switch 135, and the display unit 136.
  • the CPU 132 further controls the carrier driving unit 45, the three-dimensional detection sensor 75, the right optical unit 51, the left optical unit 52, and the optical unit driving unit 130 by executing the computer program.
  • the storage unit 133 records the computer program and records information used by the CPU 132.
  • a memory such as a RAM / ROM, a fixed disk device such as a hard disk, an SSD (Solid State Drive), an optical disk, or the like can be used.
  • the communication unit 134 outputs information received from the external device to the CPU 132 by communicating with the device control unit 131 and a separate external device via wireless communication, and transmits the information created by the CPU 132 to the external device.
  • Examples of the wireless communication include a mobile phone network, Bluetooth (registered trademark), NFC (Near Field Communication), infrared communication, and the like.
  • the reading start switch 135 is exposed to the outside of the document table body 14. When the reading start switch 135 is pressed by the user, the reading start switch 135 outputs a signal indicating that the reading start switch 135 has been pressed to the CPU 132.
  • the display unit 136 includes a display surface exposed to the outside of the platen main body unit 14 and displays an image created by the CPU 132 on the display surface.
  • the CPU 132 may be composed of another control circuit that controls the device control unit 131 in an integrated manner.
  • the control circuit includes a GPU (Graphics Processing Unit), a DSP (Digital Signal Processor), an LSI (Large Scale Integration), an ASIC (Application Specific IntegratedFlag), and an ASIC (Application Specific Integrated Circuit). Is done.
  • the computer program installed in the device control unit 131 is formed of a plurality of computer programs for causing the device control unit 131 to realize a plurality of functions.
  • the plurality of functions include a carrier drive control unit 141, a three-dimensional detection unit 142, an optical unit rotation control unit 143, a focus adjustment unit 144, an illumination control unit 145, an image reading control unit 146, and an image processing unit 147. .
  • the carrier drive control unit 141 controls the carrier drive unit 45 so that the carrier unit 35 is arranged at the reading start position.
  • the carrier drive control unit 141 further controls the carrier drive unit 45 so that the carrier unit 35 moves at a predetermined speed from the reading start position to the reading end position.
  • the three-dimensional detection unit 142 controls the three-dimensional detection sensor 75 so that a rough three-dimensional shape of the document placed on the document table 2 is detected. Specifically, the three-dimensional detection unit 142 controls the laser oscillator 76 so that the line laser is irradiated to the center of the document placed on the document table 2. The three-dimensional detection unit 142 further controls the camera 77 so that an image of the document is captured when the line laser is irradiated on the center of the document placed on the document table 2. The three-dimensional detection unit 142 further calculates a rough three-dimensional shape of the document by performing image processing on the image of the document captured by the camera 77.
  • the three-dimensional detection unit 142 controls the three-dimensional detection sensor 75 so that a detailed three-dimensional shape of the reading surface facing the reading unit 3 among the documents placed on the document table 2 is detected. Specifically, the three-dimensional detection unit 142 controls the laser oscillator 76 so that a plurality of line lasers corresponding to a plurality of laser planes are emitted to the reading surface of the document placed on the document table 2. The three-dimensional detection unit 142 is further configured to capture a plurality of images corresponding to the plurality of line lasers when the line laser is irradiated on the center of the document placed on the document table 2. To control.
  • One image corresponding to a line laser among a plurality of images indicates an image captured while the line laser is irradiated on the document, and a portion of the document irradiated with the line laser is illustrated. It is projected.
  • the three-dimensional detection unit 142 further calculates the detailed three-dimensional shape of the reading surface of the document by performing image processing on the image of the document captured by the camera 77.
  • the optical unit rotation control unit 143 controls the optical unit driving unit 130 so that the position where the right optical unit 51 is arranged is detected and the position where the left optical unit 52 is arranged is detected. .
  • the optical unit rotation control unit 143 controls the optical unit driving unit 130 so that the right optical unit 51 is disposed at the flat document right reading position and the left optical unit 52 is disposed at the flat document left reading position. Control.
  • the optical unit rotation control unit 143 may adjust the optical unit so that the right optical unit 51 is disposed at the V-character original left reading position and the left optical unit 52 is disposed at the V-character original right reading position.
  • the drive unit 130 is controlled.
  • the focus adjustment unit 144 controls the lens barrel drive unit 204 of the focus adjustment unit 63 of the right optical unit 51 so that the image reading unit 62 of the right optical unit 51 is adjusted in focus.
  • the focus adjustment unit 144 further controls the lens barrel drive unit 204 of the focus adjustment unit 63 of the left optical unit 52 so that the image reading unit 62 of the left optical unit 52 is focused.
  • the illumination control unit 145 illuminates a region intersecting the reading optical axis plane 71 of the image reading unit 62 of the right optical unit 51.
  • the illumination unit 64 of the optical unit 51 is controlled.
  • the illumination control unit 145 illuminates a region intersecting the reading optical axis plane 71 of the image reading unit 62 of the left optical unit 52.
  • the illumination unit 64 of the optical unit 52 is controlled.
  • the image reading control unit 146 moves the image reading unit 62 of the right optical unit 51 so that a plurality of right reading line area images corresponding to a plurality of reading positions are captured while the carrier unit 35 is moving. Control.
  • the right reading line area image corresponding to a certain reading position among the plurality of right reading line area images corresponds to the reading position among the plurality of right reading line areas on the reading surface of the document placed on the document table 2.
  • the right side reading line area is projected.
  • the image reading control unit 146 further includes the image reading unit of the left optical unit 52 so that a plurality of left reading line area images corresponding to a plurality of reading positions are captured while the carrier unit 35 is moving. 62 is controlled.
  • the left reading line area image corresponding to a certain reading position among the plurality of left reading line area images corresponds to the reading position among the plurality of left reading line areas on the reading surface of the document placed on the document table 2.
  • the left reading line area is projected.
  • the image processing unit 147 creates a right-side read image by performing image processing on a plurality of right-side reading line area images captured by the image reading unit 62 of the right-side optical unit 51.
  • the image processing unit 147 creates a left-side read image by performing image processing on a plurality of left-side reading line area images captured by the image reading unit 62 of the left-side optical unit 52.
  • the image processing unit 147 creates a composite image by performing image processing on the right side read image and the left side read image.
  • a composite image after distortion correction is created by performing image processing on the composite image based on the detailed three-dimensional shape detected by the three-dimensional detection unit 142.
  • FIG. 36 is a flowchart showing the operation of the image reading apparatus 1.
  • the apparatus control unit 131 controls the carrier driving unit 45 to place the carrier unit 35 at the reading start position.
  • the ambient light of the environment where the image reading apparatus 1 is installed passes through the top plate 36 and illuminates the document table 2 because the carrier unit 35 is disposed at the reading start position.
  • the user can easily confirm what is placed on the top of the document table 2 by illuminating the document table 2 with ambient light, and easily what is placed on the top of the document table 2 Can be handled.
  • the user places a document to be read on the document table 2 using the image reading device 1. Specifically, the user attaches the V-shaped presser 95 to the presser carrier 83 and retracts the presser carrier 83 when the document to be read using the image reading device 1 is a binding document that cannot be flatly opened. Place in position. After the presser carrier 83 is placed at the retracted position, the user places the right document table 15 at the V-shaped document right holding position and the left document table 16 at the V-shaped document left holding position.
  • the user opens the document left and right so that a predetermined page of the document is exposed, places the right part of the document on the right placement surface 17 of the right document table 15, and places the left side of the document on the left side.
  • the portion is placed on the left placement surface 19 of the left document table 16.
  • the user moves the presser carrier 83 to the contact position after placing the document on the right document table 15 and the left document table 16.
  • the presser carrier 83 In the V-shaped presser 95, when the presser carrier 83 is arranged at the close contact position, the right presser 97 comes into close contact with the reading surface facing the reading unit 3 in the right part of the document, and the left part of the document
  • the left presser 98 is in close contact with the reading surface facing the reading unit 3.
  • the user attaches the flat presser 84 to the presser carrier 83 and arranges the presser carrier 83 at the retracted position when the document to be read using the image reading device 1 can be spread flat.
  • the presser carrier 83 After the presser carrier 83 is placed at the retracted position, the user places the right document table 15 at the flat document right holding position and the left document table 16 at the flat document left holding position.
  • the user places the right portion of the document on the right placement surface 17 of the right document table 15 and places the left portion of the document on the left placement surface 19 of the left document table 16.
  • the user places the presser carrier 83 at the close contact position after placing the document on the right document table 15 and the left document table 16.
  • the flat presser 84 is in close contact with the reading surface of the original facing the reading unit 3 when the presser carrier 83 is disposed at the close contact position.
  • the apparatus control unit 131 controls the three-dimensional detection sensor 75 to perform three-dimensional detection (pre) (step S1).
  • the apparatus control unit 131 controls the laser oscillator 76 of the three-dimensional detection sensor 75 to irradiate the center of the document placed on the document table 2 with the line laser.
  • the device control unit 131 controls the camera 77 of the three-dimensional detection sensor 75 so as to capture an image of the document irradiated with the line laser.
  • the apparatus control unit 131 calculates a rough three-dimensional shape of the reading surface of the document placed on the document table 2 by performing image processing on the captured image.
  • the device control unit 131 executes a pre-reading check (step S2). That is, the apparatus control unit 131 can appropriately read the image of the document placed on the document table 2 using the reading unit 3 based on the rough three-dimensional shape calculated in step S1. Determine whether.
  • the apparatus control unit 131 is configured such that the normal of the reading surface of the document placed on the right document table 15 and the normal of the reading surface of the document placed on the left document table 16 are each directed in a predetermined direction.
  • the reading unit 3 determines that the image of the document cannot be read appropriately. For example, when the reading surface of the document placed on the right document table 15 is separated from the right placement surface 17 by a predetermined distance or more, the apparatus control unit 131 appropriately reads the image of the document.
  • the apparatus control unit 131 cannot properly read the image of the document by controlling the display unit 136 when it is determined that the image of the document placed on the document table 2 cannot be read properly.
  • An error image indicating this is displayed on the display unit 136.
  • the user presses the reading start switch 135 again after placing the document on the document table 2 again.
  • the apparatus control unit 131 executes the processes after step S1 again.
  • the apparatus control unit 131 determines that the image of the document placed on the document table 2 can be read, the right document table 15 is arranged based on the rough three-dimensional shape calculated in step S1. The position where the left document platen 16 is arranged is calculated. The device control unit 131 further controls the optical unit driving unit 130 to detect the position where the right optical unit 51 is disposed and detects the position where the left optical unit 52 is disposed. Next, the apparatus control unit 131 determines whether or not the right optical unit 51 and the left optical unit 52 are disposed at appropriate positions corresponding to the positions where the right document table 15 and the left document table 16 are disposed. (Step S3).
  • the apparatus control unit 131 determines that the right optical unit 51 is appropriate. It is determined that it is placed at the correct position.
  • the apparatus control unit 131 sets the right optical unit 51 appropriately. It determines with not being arrange
  • the apparatus control unit 131 It is determined that it is placed at the correct position.
  • the apparatus control unit 131 determines that the right optical unit 51 is appropriate. It determines with not being arrange
  • the apparatus control unit 131 determines that the left optical unit 52 is in an appropriate position. It is determined that it is arranged in.
  • the apparatus control unit 131 sets the left optical unit 52 appropriately. It determines with not being arrange
  • the apparatus control unit 131 determines that the left optical unit 52 is appropriate.
  • the apparatus control unit 131 determines that the left optical unit 52 is appropriate. It determines with not being arrange
  • the apparatus control unit 131 arranges the right optical unit 51 and the left optical unit 52 in appropriate positions when it is determined that both the right optical unit 51 and the left optical unit 52 are arranged in appropriate positions. It is determined that When it is determined that either the right optical unit 51 or the left optical unit 52 is not placed at an appropriate position, the device control unit 131 places the right optical unit 51 and the left optical unit 52 at appropriate positions. Judge that it is not.
  • the device control unit 131 controls the right optical unit 51 and the left optical unit by controlling the optical unit driving unit 130.
  • the unit 52 is moved (step S4). That is, the apparatus control unit 131 controls the optical unit driving unit 130 to place the right optical unit 51 in the flat document right reading position when the right document table 15 is arranged in the flat document right holding position. .
  • the apparatus control unit 131 controls the optical unit driving unit 130 to place the left optical unit 52 at the V-shaped document right reading position when the right document table 15 is disposed at the V-shaped document right holding position. .
  • the apparatus control unit 131 controls the optical unit driving unit 130 to place the left optical unit 52 in the flat document left reading position when the left document table 16 is placed in the flat document left holding position.
  • the apparatus control unit 131 controls the optical unit driving unit 130 to place the right optical unit 51 in the V-shaped document left side reading position when the left document table 16 is disposed in the V-shaped document left side holding position. .
  • step S5 the apparatus control unit 131 controls the laser oscillator 76 of the three-dimensional detection sensor 75 to emit a line laser that travels along a plurality of laser planes toward the document table 2.
  • the apparatus control unit 131 controls the camera 77 of the three-dimensional detection sensor 75 while the line laser is emitted from the laser oscillator 76, thereby obtaining a plurality of three-dimensional detection images corresponding to a plurality of laser planes. Take an image.
  • Each of the plurality of three-dimensional detection images projects a document placed on the document table 2.
  • One 3D detection image corresponding to a certain laser plane among the plurality of 3D detection images is an image captured by the camera 77 when a line laser traveling along the laser plane is emitted. Show.
  • the apparatus control unit 131 calculates the detailed three-dimensional shape of the reading surface of the document placed on the document table 2 by performing image processing on the plurality of captured three-dimensional detection images.
  • the apparatus control unit 131 reads the original after the detailed three-dimensional shape of the reading surface is calculated (step S6).
  • the device control unit 131 controls the lens barrel driving unit 204 of the right optical unit 51 to move the lens unit 202 of the right optical unit 51 in parallel with the reading optical axis 67 of the right optical unit 51, thereby The image reading unit 62 of the unit 51 is focused.
  • the apparatus control unit 131 controls the lens barrel driving unit 204 of the left optical unit 52 to move the lens unit 202 of the left optical unit 52 in parallel with the reading optical axis 67 of the left optical unit 52, thereby moving the left optical unit 52.
  • the image reading unit 62 is adjusted in focus.
  • the lens unit 202 rotates around the lens unit rotation shaft 224 by its own weight because the vertical line passing through the center of gravity 225 of the lens unit 202 does not intersect the lens unit rotation shaft 224.
  • the lens unit 202 rotates around the lens unit rotation shaft 224 so that the contact point 223 contacts the contact surface 215.
  • the lens unit 202 is appropriately arranged so that the optical axis of the lens 222 overlaps the reading optical axis 67 when the contact point 223 contacts the contact surface 215.
  • the image reading unit 62 is appropriately focused by properly arranging the lens unit 202.
  • the apparatus control unit 131 further controls the carrier driving unit 45 to move the carrier unit 35 from the reading start position to the reading end position at a predetermined speed.
  • the apparatus controller 131 is placed on the document table 2 by controlling the illumination unit 64 of the right optical unit 51 and the illumination unit 64 of the left optical unit 52 while the carrier unit 35 is moving. Illuminates the reading surface of the document.
  • the apparatus control unit 131 controls the image reading unit 62 of the right optical unit 51 every time the carrier unit 35 is arranged at a plurality of reading positions while the carrier unit 35 is moving, thereby providing a document table. 2 captures an image in which a part of the document placed on 2 is projected.
  • the apparatus control unit 131 further controls the image reading unit 62 of the left optical unit 52 every time the carrier unit 35 is arranged at a plurality of reading positions while the carrier unit 35 is moving, thereby An image in which a part of the document placed on the table 2 is projected is captured.
  • the apparatus control unit 131 controls the image reading unit 62 of the right optical unit 51 and the image reading unit 62 of the left optical unit 52 in this way, thereby allowing a plurality of right reading line region images, a plurality of left reading line region images, and the like. Image.
  • the image reading unit 62 is appropriately focused by being arranged so that the optical axis of the lens 222 overlaps the reading optical axis 67, and the plurality of right side reading line regions and the plurality of left side reading line regions. An image can be appropriately captured.
  • the apparatus control unit 131 turns off the illumination unit 64 of the right optical unit 51 and the illumination unit 64 of the left optical unit 52 after the plurality of right reading line region images and the plurality of left reading line region images are captured.
  • the apparatus control unit 131 further controls the carrier driving unit 45 to move the carrier unit 35 to the reading start position after the plurality of right reading line region images and the plurality of left reading line region images are captured. .
  • the apparatus control unit 131 performs image processing on the plurality of right side reading line area images and the plurality of left side reading line area images captured in step S ⁇ b> 6, thereby obtaining an image on the reading surface of the document placed on the document table 2.
  • Create (step S7) Specifically, the apparatus control unit 131 creates a right-side read image by performing image processing on a plurality of right-side read line area images captured by the image reading unit 62 of the right optical unit 51.
  • the right side read image projects the reading surface of the original placed on the original table on which the right optical unit 51 is directed. That is, the right-side read image indicates an image that projects the reading surface of the document placed on the right-side document table 15 when the right optical unit 51 is disposed at the flat document right-side reading position.
  • the right-side read image shows an image that projects the reading surface of the document placed on the left-side document table 16 when the right optical unit 51 is disposed at the left-side reading position of the V-shaped document.
  • the apparatus control unit 131 creates a left-side read image by performing image processing on a plurality of left-side read line area images captured by the image reading unit 62 of the left-side optical unit 52.
  • the left side read image projects the reading surface of the document placed on the document table to which the left optical unit 52 is directed.
  • the left-side read image projects the reading surface of the document placed on the left-side document table 16 when the left optical unit 52 is disposed at the flat document left-side reading position.
  • the left-side read image projects the reading surface of the original placed on the right-side original table 15 when the left optical unit 52 is disposed at the V-type original right reading position.
  • the apparatus control unit 131 creates a composite image by performing image processing on the right side read image and the left side read image.
  • the composite image is an image that projects a composite reading surface in which the reading surface of the document placed on the right document table 15 and the reading surface of the document placed on the left document table 16 are joined together.
  • the apparatus control unit 131 creates a distortion-corrected composite image by performing image processing on the composite image based on the detailed three-dimensional shape calculated in step S5.
  • the composite image after distortion correction is in a state of being stretched flat so that the reading surface of the document placed on the right document table 15 and the reading surface of the document placed on the left document table 16 do not sag. An image showing the reading surface is shown.
  • the device control unit 131 controls the communication unit 134 to transmit the strain-corrected composite image to an external device that is separate from the device control unit 131.
  • the user places the presser carrier 83 at the close contact position. This may be omitted.
  • the image reading apparatus 1 reads the image of the document using the light transmitted through the flat presser 84. Further, the user may omit attaching the flat presser 84 or the V-shaped presser 95 to the presser carrier 83 when the reading surface of the document placed on the document table 2 is sufficiently flat.
  • the right optical unit 51 and the left optical unit 52 can move in synchronization by the right optical unit 51 and the left optical unit 52 being supported by the carrier housing 37.
  • the plurality of right reading line regions imaged by the image reading unit 62 of the right optical unit 51 are at appropriate positions with respect to the plurality of left reading line regions imaged by the image reading unit 62 of the left optical unit 52. Be placed.
  • the image reading apparatus 1 uses a plurality of right reading line images captured by the image reading unit 62 of the right optical unit 51 and a plurality of left reading line images captured by the image reading unit 62 of the left optical unit 52. It can be synthesized appropriately.
  • the image reading apparatus 1 when the reading optical axis plane 71 is perpendicular to the document reading surface, the light reflected from the document reading surface of the light emitted from the illumination unit 64 is reflected to the image reading unit 62. May get in.
  • the image reading apparatus 1 when the reflected light enters the image reading unit 62, the scale may be reflected in the image captured by the image reading unit 62.
  • an image captured by the image reading unit 62 is obtained because the reading optical axis plane 71 is inclined with respect to the normal line of the reading surface of the document placed on the document table 2. It is possible to reduce the reflection of light.
  • the image reading apparatus 1 the illuminance of light received by the reading surface of the document placed on the document table 2 due to the central illumination optical axis 69 of the central illumination unit 66 being inclined with respect to the reading optical axis 67
  • the distribution can be made uniform.
  • the image reading apparatus 1 reduces the area illuminated from both. be able to.
  • the image reading apparatus 1 reduces the illuminance at the center of the reading surface by reducing the area illuminated from both the right optical unit 51 and the left optical unit 52 in the reading surface, and reduces the light received by the reading surface.
  • the illuminance distribution can be made uniform.
  • the image reading apparatus 1 can appropriately read an image of a document by uniformizing the illuminance distribution of light received by the reading surface of the document placed on the document table 2.
  • the central illumination unit 66 may be arranged so that the central illumination optical axis 69 is parallel to the read optical axis 67 when the illuminance distribution on the reading surface is sufficiently uniform. .
  • the focus adjustment unit 63 includes a lens unit 202, two pins 205 to 206, a support member 201, and a lens barrel 203.
  • the lens 222 is fixed to the lens unit 202.
  • the two pins 205 to 206 are fixed to the lens unit 202.
  • the support member 201 supports the two pins 205 to 206 so that the lens unit 202 can move.
  • the lens barrel 203 moves the two pins 205 to 206 relative to the support member 201 by moving relative to the support member 201 so that the lens 222 moves for focus adjustment.
  • the lens unit 202 has two contact points 223 that are different from the parts where the two pins 205 to 206 are fixed, or the contact point 223 is separated from the contact surface 215. It is rotatably supported via pins 205-206. The lens unit 202 is supported by the support member 201 when the contact point 223 contacts the support member 201.
  • the lens unit 202 is supported on the support member 201 at three points of the two pins 205 to 206 and the contact point 223, so that the lens unit 202 is stably fixed to the support member 201. can do.
  • the focus adjustment unit 63 can appropriately arrange the lens unit 202 at a predetermined position by the lens unit 202 being supported by the support member 201 with the two pins 205 to 206 and the contact point 223.
  • the focus adjustment unit 63 can appropriately arrange the lens unit 202 at a predetermined position by the two pins 205 to 206 and the contact point 223, so that it is not necessary to provide three or more pins and the number of parts can be reduced. The manufacturing cost can be reduced.
  • the two pins 205 to 206 of the focus adjustment unit 63 of the first embodiment are arranged so that the lens unit rotation shaft 224 connecting the two pins 205 to 206 is orthogonal to the optical axis of the lens 222.
  • Such a focus adjustment unit 63 can stably support the lens unit 202 by moving the two pins 205 to 206 in the diameter position, and can move the lens unit 202 appropriately.
  • the focus adjustment unit 63 can appropriately adjust the focus by moving the lens unit 202 appropriately.
  • the focus adjustment unit 63 can make the inclination of the two spiral grooves of the lens barrel 203 guiding the two pins 205 to 206 gentle by arranging the two pins 205 to 206 in the diameter position.
  • the focus adjustment unit 63 can reduce the amount of movement of the lens unit 202 parallel to the reading optical axis 67 when the lens barrel 203 rotates by a unit angle by making the inclination of the two spiral grooves gentle.
  • the lens unit 202 can be moved with high accuracy.
  • the two pins 205 to 206 of the focus adjustment unit 63 of the first embodiment are arranged so that the lens unit rotation shaft 224 is orthogonal to the optical axis of the lens 222.
  • the lens unit rotation shaft 224 and the lens 222 are arranged.
  • the optical axis may be arranged at a twisted position. Even when the lens unit rotation shaft 224 and the optical axis of the lens 222 are arranged at a twisted position, the focus adjustment unit 63 can appropriately move the lens unit 202 at the three points of the two pins 205 to 206 and the contact point 223. Can be placed in position.
  • the two pins 205 to 206 of the focus adjustment unit 63 of the first embodiment are fixed to the lens unit 202 so that the center of gravity of the lens unit 202 does not overlap the lens unit rotation shaft 224 connecting the two pins 205 to 206. ing.
  • Such a focus adjustment unit 63 is arranged so that the vertical line passing through the center of gravity 225 of the lens unit 202 does not intersect the lens unit rotation shaft 224, so that the contact point 223 is brought into contact with the contact surface 215 due to the gravity of the lens unit 202. Can be contacted.
  • the focus adjustment unit 63 does not have to be provided with a separate member for applying a force for bringing the contact point 223 into contact with the contact surface 215 to the lens unit 202, thereby reducing the number of components and the manufacturing cost. .
  • the support member 201 of the focus adjustment unit 63 is formed with two linear grooves that guide the two pins 205 to 206 so that the lens 222 moves in parallel with the reading optical axis 67.
  • the lens barrel 203 is formed with two spiral grooves that fit into the two pins 205 to 206, respectively.
  • the two spiral grooves guide the two pins 205 to 206 so that the lens 222 moves in parallel with the reading optical axis 67 when the lens barrel 203 rotates with respect to the support member 201.
  • the focus adjustment unit 63 further includes two urging portions 207 to 208 that respectively apply forces to the two pins 205 to 206 so that the two pins 205 to 206 come into contact with the two spiral grooves, respectively.
  • Such a focus adjustment unit 63 includes the two urging portions 207 to 208, so that the two pins 205 to 206 can be reliably brought into contact with the end surfaces of the two spiral grooves.
  • the focus adjustment unit 63 can place the lens unit 202 in an appropriate position by bringing the two pins 205 to 206 into contact with the two spiral grooves. You can adjust the focus appropriately.
  • the two urging portions 207 to 208 of the focus adjustment unit 63 of the first embodiment each have a plate 231 and a spring 232.
  • the plate 231 contacts one of the two pins 205-206.
  • the spring 232 applies an elastic force to the plate 231 so that the two pins 205 to 206 are in contact with the end faces of the two spiral grooves, respectively.
  • the spring 232 is disposed in another region different from the region between the lens unit 202 and the illumination unit 64.
  • the focus adjustment unit 63 can reduce the distance between the lens unit 202 and the illumination unit 64 by disposing the spring 232 in another region different from the region between the lens unit 202 and the illumination unit 64. .
  • the focus adjustment unit 63 can reduce the size of the right optical unit 51 and the left optical unit 52 including the focus adjustment unit 63 by reducing the distance between the lens unit 202 and the illumination unit 64.
  • the focus adjustment unit 63 can reduce the size of the image reading apparatus 1 including the right optical unit 51 and the left optical unit 52 by reducing the size of the right optical unit 51 and the left optical unit 52.
  • the image reading apparatus 1 includes a focus adjustment unit 63 and an image reading unit 62 that captures an image of a subject using light transmitted through the lens 222.
  • Such an image reading apparatus 1 includes the focus adjustment unit 63, so that the number of parts can be reduced and the manufacturing cost can be reduced.
  • the focus adjustment unit 63 of the image reading apparatus 1 is configured such that the first figure obtained by orthogonally projecting the center of gravity of the lens unit 202 on the horizontal plane projects the straight line connecting the two pins 205 to 206 onto the horizontal plane. Arranged so as not to overlap two figures.
  • Such an image reading apparatus 1 can rotate the lens unit 202 around the lens unit rotation shaft 224 by the gravity of the lens unit 202, and can bring the contact point 223 into contact with the contact surface 215.
  • the image reading apparatus 1 needs to be additionally provided with a member that gives the lens unit 202 a force for bringing the contact point 223 into contact with the contact surface 215 by bringing the contact point 223 into contact with the contact surface 215 due to the gravity of the lens unit 202.
  • the manufacturing cost can be reduced.
  • FIG. 37 is a cross-sectional view showing the focus adjustment unit 261 arranged so that the optical axis of the lens 222 is horizontal.
  • the focus adjustment unit 261 is formed in the same manner as the focus adjustment unit 63, as shown in FIG.
  • the focus adjustment unit 261 is arranged such that the lens unit rotation shaft 224 and the center of gravity 225 of the lens unit 202 are arranged on the same horizontal plane.
  • the focus adjustment unit 261 can bring the contact point 223 into contact with the contact surface 215 by the weight of the lens unit 202 in the same manner as the focus adjustment unit 63 described above, and the lens unit 202 can be disposed at an appropriate position. it can.
  • the focus adjustment unit 261 can reduce the manufacturing cost because it is not necessary to provide three or more pins in the same manner as the focus adjustment unit 63 described above.
  • the focus adjustment units 63 and 261 described above are arranged and used so that the optical axis of the lens 222 is not parallel to the vertical line, but the optical axis of the lens 222 is parallel to the vertical line. It may be arranged and used.
  • the focus adjustment units 63 and 261 are provided with weights on the lens unit 202 so that the vertical line passing through the center of gravity 225 of the lens unit 202 does not intersect the lens unit rotation shaft 224.
  • the focus adjustment units 63 and 261 can bring the contact point 223 into contact with the contact surface 215 by gravity, and the lens 222 can be disposed at an appropriate position, so that the focus adjustment can be performed appropriately.
  • the focus adjustment units 63 and 261 already described have the contact point 223 in contact with the contact surface 215 due to the weight of the lens unit 202, but apply a force to bring the contact point 223 into contact with the contact surface 215 to the lens unit 202.
  • a member may be further provided. Examples of the member include a spring that applies an elastic force to the lens unit 202 so that the contact point 223 contacts the contact surface 215.
  • Such a focus adjustment unit includes such a member so that the contact point 223 is brought into contact with the contact surface 215 even when a vertical line passing through the center of gravity 225 of the lens unit 202 intersects the lens unit rotation shaft 224. Can do. Even when the focus adjustment unit includes such a member, it is not necessary to provide three or more pins, thereby reducing the manufacturing cost.
  • FIG. 38 is a side view showing the focus adjustment unit 271 according to the second embodiment.
  • the two urging portions 207 to 208 of the focus adjustment unit 63 of the first embodiment described above are replaced with the other two urging portions.
  • the two urging portions correspond to the two pins 205 to 206.
  • the first urging portion 272 corresponding to the first pin 205 of the two urging portions is formed from a single spring.
  • the first urging portion 272 has one end fixed to the first pin 205 and the other end fixed to the support member 201.
  • the first urging unit 272 applies a force to the first pin 205 so that the first pin 205 is pressed against the end surface of the first spiral groove 227 far from the image reading unit 62.
  • the second urging portion corresponding to the second pin 206 of the two urging portions is formed from a single spring in the same manner as the first urging portion 272.
  • the second urging portion has one end fixed to the second pin 206 and the other end fixed to the support member 201.
  • the second urging unit applies a force to the second pin 206 so that the second pin 206 is pressed against the end surface of the second spiral groove far from the image reading unit 62.
  • the focus adjustment unit 271 is similar to the focus adjustment unit 63 of the first embodiment described above, and the lens unit 202 is supported by the support member 201 at the three points of the two pins 205 to 206 and the contact point 223. The number of parts can be reduced and the manufacturing cost can be reduced.
  • the focus adjustment unit 271 is used when the gap between the focus adjustment unit 271 and the illumination unit 64 is sufficiently large.
  • the focus adjustment unit 271 has two urging portions formed from parts smaller than the number of parts of the two urging portions 207 to 208 of the focus adjustment unit 63 of the first embodiment described above. Compared to the above, the manufacturing cost can be reduced. Compared with the image reading apparatus 1 including the focus adjustment unit 63, the image reading apparatus including the focus adjustment unit 271 can further reduce the number of components and the manufacturing cost.
  • the focus adjustment unit of the above-described embodiment includes two urging portions.
  • Two urging parts may be omitted. Even when the two urging portions are omitted, the focus adjustment unit does not need to be provided with three or more pins, and can reduce the number of parts and the manufacturing cost.
  • the focus adjustment unit of the above-described embodiment includes the lens barrel driving unit 204, but the lens barrel driving unit 204 may be omitted.
  • the lens barrel driving unit 204 When the lens barrel driving unit 204 is omitted, the lens barrel 203 rotates around the reading optical axis 67 when operated by a user, for example. Even when the lens barrel driving unit 204 is omitted, the focus adjustment unit does not need to be provided with three or more pins, thereby reducing the manufacturing cost.
  • the focus adjustment unit of the above-described embodiment is used in the image reading device, but may be used in another device different from the image reading device.
  • the apparatus include a projector that projects an image on a screen by projecting light that has passed through the lens 222 of the focus adjustment unit onto the screen. Similar to the image reading apparatus 1, such an apparatus is also provided with a focus adjustment unit, so that the number of parts can be reduced and the manufacturing cost can be reduced.
  • the embodiment has been described above, but the embodiment is not limited by the above-described content.
  • the above-described constituent elements include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in a so-called equivalent range.
  • the above-described components can be appropriately combined.
  • at least one of various omissions, substitutions, and changes of the components can be made without departing from the scope of the embodiments.
  • Image reading device 2 Document table 3: Reading unit 7: Installation surface 62: Image reading unit 63: Focus adjustment unit 64: Illumination unit 67: Reading optical axis 71: Reading optical axis plane 201: Support member 202: Lens unit 203: Lens barrel 204: Lens barrel drive unit 205 to 206: Two pins 207 to 208: Two biasing units 212: Lens unit support tube 215: Contact surface 221: Lens support tube 222: Lens 223: Contact point 224: Lens unit rotating shaft 225: Center of gravity 226: First linear groove 227: First spiral groove 231: Plate 232: Spring 235: Plate rotating shaft 236: Plate 237: Spring

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Lens Barrels (AREA)
  • Accessories Of Cameras (AREA)
  • Studio Devices (AREA)

Abstract

Une unité de réglage de foyer (63) comprend : une unité de lentille (202); deux broches (205, 206); un élément de support (201); et un barillet d'objectif (203). L'unité de lentille (202) comprend une lentille (222). Les deux broches (205, 206) sont fixées à l'unité de lentille (202). L'élément de support (201) supporte les deux broches (205, 206) de telle sorte que l'unité de lentille (202) est mobile. Le barillet d'objectif (203) tourne par rapport à l'élément de support (201) pour déplacer ainsi les deux broches (205, 206) par rapport à l'élément de support (201) de telle sorte que la lentille (222) se déplace pour ajuster la mise au point. A ce moment, un point de contact (223) sur l'unité de lentille (202), qui est différent du site auquel les deux broches (205, 206) sont fixés, vient en contact avec l'élément de support (201), et ainsi l'unité de lentille (202) est supportée sur l'élément de support (201).
PCT/JP2017/017021 2017-04-28 2017-04-28 Unité d'ajustement de foyer et dispositif de lecture d'image WO2018198340A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019515041A JP6731546B2 (ja) 2017-04-28 2017-04-28 ピント調整ユニットおよび画像読取装置
PCT/JP2017/017021 WO2018198340A1 (fr) 2017-04-28 2017-04-28 Unité d'ajustement de foyer et dispositif de lecture d'image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/017021 WO2018198340A1 (fr) 2017-04-28 2017-04-28 Unité d'ajustement de foyer et dispositif de lecture d'image

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4710227Y1 (fr) * 1971-09-09 1972-04-17
JP2007164001A (ja) * 2005-12-15 2007-06-28 Pentax Corp カム機構
WO2014115274A1 (fr) * 2013-01-24 2014-07-31 Cbc株式会社 Lentille de caméra de surveillance et son procédé de correction
WO2017060961A1 (fr) * 2015-10-05 2017-04-13 株式会社Pfu Dispositif de lecture d'image, procédé de commande et programme de commande

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4710227Y1 (fr) * 1971-09-09 1972-04-17
JP2007164001A (ja) * 2005-12-15 2007-06-28 Pentax Corp カム機構
WO2014115274A1 (fr) * 2013-01-24 2014-07-31 Cbc株式会社 Lentille de caméra de surveillance et son procédé de correction
WO2017060961A1 (fr) * 2015-10-05 2017-04-13 株式会社Pfu Dispositif de lecture d'image, procédé de commande et programme de commande

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JPWO2018198340A1 (ja) 2019-11-07

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