US20020080460A1 - Optical scanning module with rotatable reflection mirror for image scanning device - Google Patents

Optical scanning module with rotatable reflection mirror for image scanning device Download PDF

Info

Publication number
US20020080460A1
US20020080460A1 US09/748,001 US74800100A US2002080460A1 US 20020080460 A1 US20020080460 A1 US 20020080460A1 US 74800100 A US74800100 A US 74800100A US 2002080460 A1 US2002080460 A1 US 2002080460A1
Authority
US
United States
Prior art keywords
scanning
reflective
focusing lens
reflection mirror
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US09/748,001
Other versions
US6421158B1 (en
Inventor
Chien-Liang Yeh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cedar Lane Technologies Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US09/748,001 priority Critical patent/US6421158B1/en
Assigned to UMAX DATA SYSTEMS, INC. reassignment UMAX DATA SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YEH, CHIEN-LIANG
Publication of US20020080460A1 publication Critical patent/US20020080460A1/en
Application granted granted Critical
Publication of US6421158B1 publication Critical patent/US6421158B1/en
Assigned to VEUTRON CORPORATION reassignment VEUTRON CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: UMAX DATA SYSTEMS INC.
Assigned to TRANSPACIFIC IP, LTD. reassignment TRANSPACIFIC IP, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VEUTRON CORPORATION
Assigned to TRANSPACIFIC SYSTEMS, LLC reassignment TRANSPACIFIC SYSTEMS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TRANSPACIFIC IP LTD.
Assigned to TITUSVILLE CANAVERAL LLC reassignment TITUSVILLE CANAVERAL LLC MERGER (SEE DOCUMENT FOR DETAILS). Assignors: TRANSPACIFIC SYSTEMS, LLC
Assigned to INTELLECTUAL VENTURES I LLC reassignment INTELLECTUAL VENTURES I LLC MERGER (SEE DOCUMENT FOR DETAILS). Assignors: TITUSVILLE CANAVERAL LLC
Assigned to INTELLECTUAL VENTURES ASSETS 139 LLC reassignment INTELLECTUAL VENTURES ASSETS 139 LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INTELLECTUAL VENTURES I LLC
Assigned to INTELLECTUAL VENTURES ASSETS 139 LLC reassignment INTELLECTUAL VENTURES ASSETS 139 LLC CORRECTIVE ASSIGNMENT TO CORRECT THE PATENT NUMBERS 7593141 AND 7609407 PREVIOUSLY RECORDED ON REEL 052491 FRAME 0084. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: INTELLECTUAL VENTURES I LLC
Assigned to CEDAR LANE TECHNOLOGIES INC. reassignment CEDAR LANE TECHNOLOGIES INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INTELLECTUAL VENTURES ASSETS LLC
Adjusted expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • H04N1/1013—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 sub-scanning by translatory movement of at least a part of the main-scanning components
    • H04N1/1039—Movement of the main scanning components
    • H04N1/1043—Movement of the main scanning components of a sensor array
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • 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
    • H04N1/1013—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 sub-scanning by translatory movement of at least a part of the main-scanning components
    • H04N1/1017—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 sub-scanning by translatory movement of at least a part of the main-scanning components the main-scanning components remaining positionally invariant with respect to one another in the sub-scanning direction
    • 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
    • H04N1/1013—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 sub-scanning by translatory movement of at least a part of the main-scanning components
    • H04N1/1039—Movement of the main scanning components
    • H04N1/1048—Movement of the main scanning components of a lens or lens arrangement
    • 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
    • H04N1/1013—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 sub-scanning by translatory movement of at least a part of the main-scanning components
    • H04N1/1039—Movement of the main scanning components
    • H04N1/1052—Movement of the main scanning components of a mirror
    • 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
    • H04N1/19—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 multi-element arrays
    • H04N1/191—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 multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/192—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
    • H04N1/193—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0418—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207 capable of scanning transmissive and reflective originals at a single scanning station

Definitions

  • the present invention relates to an image scanning device with dual scanning modes, and more particularly to an image scanning device including a rotatable reflection mirror arranged in an optical scanning module of the image scanning device for selectively scanning a reflective original document or a transparent original document.
  • Typical image scanners are commonly categorized into reflective and transparent types. Reflective type scanner is employed for scanning of reflective document, while transparent type scanner is employed for scanning of transparent document.
  • the scanner 1 generally includes a top frame 11 with a document positioning plate 12 which is a plane surface made of for example glass or other light transmittable, substantially rigid material, for supporting a reflective original document 10 to be scanned, defining a document scanning window.
  • a cover 13 is pivotally attached to the top frame 11 of the scanner 1 for covering the document positioning plate 12 during the scanning process.
  • the reflective type scanner 1 generally includes an optical scanning module 14 and a pair of guiding rails 15 a, 15 b.
  • the optical scanning module 14 is provided with a light source 16 , a plurality of light reflection mirrors 171 , 172 , 173 , 174 , a focusing lens 18 , and an image sensing module 19 such as a Charge Coupling Device (CCD) or a Contact Image Scanning (CIS).
  • CCD Charge Coupling Device
  • CIS Contact Image Scanning
  • FIGS. 3 and 4 a typical transparent type scanner 2 is shown.
  • the scanner 2 also includes a top frame 21 and a document positioning plate 22 .
  • a back lighting module 23 is pivotally attached to the top frame 21 of the scanner 2 .
  • the back lighting module 23 is provided with a back light source 26 therein.
  • the transparent type scanner 2 includes an optical scanning module 24 moveably supported by a pair of guiding rails 25 a, 25 b.
  • the optical scanning module 24 includes a plurality of reflection mirrors 271 , 272 , 273 , a focusing lens 28 , and an image sensing module 29 .
  • the optical scanning module 24 may be moved by a driving device (not shown) along the guiding rails 25 a, 25 b in the direction I.
  • the conventional reflective or transparent scanner described above can only conduct a specific scanning mode, i.e. the reflective type scanner can not conduct a transparent scanning process, while the transparent type scanner can not conduct a reflective scanning process.
  • a mode-selective scanner which is capable of selectively conducting reflective or transparent scanning processes.
  • the scanner is too complicated to economically manufacture. In addition, it is too complicate to assemble.
  • a primary object of the present invention is to provide an image scanning device with a rotatable reflection mirror mounted in the optical scanning module.
  • the scanner is capable of conducting either a reflective scanning mode or a transparent scanning mode.
  • a scanner for selectively scanning reflective and transparent original document in accordance with the present invention comprises an optical scanning module provided with a rotatable reflection mirror for selectively scanning a reflective original document or a transparent original document.
  • the rotatable reflection mirror may be rotated by a driving device comprising such as a stepping motor and a mechanical shaft coupled to the rotatable reflection mirror.
  • a driving device comprising such as a stepping motor and a mechanical shaft coupled to the rotatable reflection mirror.
  • the rotatable reflection mirror is rotated to a first reflection position.
  • a light beam from a first light source projects to the reflective document.
  • the image of the reflective document is reflected by the rotatable reflection mirror and a number of fixed reflective optical path mirrors, and then received by an image sensing module through a first focusing lens.
  • the rotatable reflection mirror is rotated to a second reflection position.
  • a light beam from a second light source projects to the transparent document.
  • the image of the transparent document is reflected by the rotatable reflection mirror and a number of fixed transparent optical path mirrors, and then received by the image sensing module through a second focusing lens.
  • two position detecting unites are arranged within an effective rotation radius of the rotatable reflection mirror for detecting the position of the rotatable reflection mirror.
  • FIG. 1 is a perspective view of a prior art reflective type scanner
  • FIG. 2 is a schematic view showing an optical path in an optical scanning module of the reflective type scanner of FIG. 1;
  • FIG. 3 is a perspective view of a prior art transparent type scanner
  • FIG. 4 is a schematic view showing an optical path in an optical scanning module of the transparent type scanner of FIG. 3;
  • FIG. 5 is a schematic view showing a rotatable reflection mirror, a number of reflection mirrors, two focusing lenses, and an image sensing module are arranged in an optical scanning module of a scanner in accordance with a preferred embodiment of the present invention
  • FIG. 6 is a schematic view showing a reflective optical path during scanning a reflective original document in accordance with the present invention, in which the rotatable reflection mirror is at a first reflection position;
  • FIG. 7 is a schematic view showing a transparent optical path during scanning a transparent original document in accordance with the present invention, in which the rotatable reflection mirror is at a second reflection position;
  • FIG. 8 is a perspective view showing the rotatable reflection mirror is coupled to a driving device in accordance with a preferred embodiment of the present invention.
  • an optical scanning module 3 is arranged in a housing of a scanner in accordance with the present invention and which is moveable along a pair of guiding rails arranged in the housing.
  • a document positioning plate 4 is mounted on the housing of the scanner and arranged above the optical scanning module 3 for supporting an original document 7 thereon.
  • the optical scanning module 3 is provided with a first light source 30 for providing light source during a reflective scanning process.
  • a second light source 5 is arranged above the document positioning plate 4 for providing back light source during a transparent scanning process.
  • the second light source 5 is arranged in a conventional back lighting module 23 as shown in FIG. 3.
  • the optical scanning device 3 of the present invention includes an image sensing module 31 , a first focusing lens 32 , a second focusing lens 33 , a plurality of fixed light reflection mirrors 71 , 72 , 73 , 74 , and a rotatable reflection mirror 8 .
  • the image sensing module 31 includes a charge coupled device (CCD).
  • the first focusing lens 32 has a light receiving inlet 32 a facing to the fixed light reflection mirror 72 and a light projecting outlet 32 b facing to the image sensing module 31 .
  • the second focusing lens 33 has a light receiving inlet 33 a facing to the fixed light reflection mirror 74 and a light projecting outlet 33 b facing to the image sensing module 31 .
  • the first focusing lens 32 is particularly arranged at an angle with respect to the second focusing lens 33 .
  • the rotatable reflection mirror 8 may be rotated about a mechanical shaft 80 by a known driving mechanism to a first reflection position as shown in FIG. 6 or a second reflection position as shown in FIG. 7.
  • the position of the rotatable reflection mirror 8 can be detected by a first and second position detecting unites 91 , 92 properly arranged adjacent to the rotatable reflection mirror 8 .
  • the present invention includes a reflective image optical path and a transparent image optical path.
  • the reflective image optical path is configured by the fixed light reflection mirrors 71 , 72 and the first focusing lens 32 .
  • the rotatable reflection mirror 8 is rotated to the first reflection position, as shown in FIG. 6.
  • a light beam as indicated by dashed line from the first light source 30 projects to the reflective original document 5 a supported on the document positioning plate 4 of the scanner frame.
  • the image of the reflective original document 5 a is reflected by the rotatable reflection mirror 8 , and the reflection mirrors 71 , 72 sequentially. Then, the reflected image of the reflective original document 5 a is received by the image sensing module 31 through the first focusing lens 32 .
  • the transparent image optical path of the present invention is configured by the fixed light reflection mirrors 73 , 74 and the second focusing lens 33 .
  • the rotatable reflection mirror 8 is rotated to the second reflection position, as shown in FIG. 7.
  • a back light beam as indicated by dashed line from the second light source 6 projects to the transparent original document 5 b supported on the document positioning plate 4 of the scanner frame.
  • the image of the transparent original document 5 b is reflected by the rotatable reflection mirror 8 , and the reflection mirrors 73 , 74 sequentially. Then, the reflected image of the transparent original document 5 b is received by the image sensing module 31 through the second focusing lens 33 .
  • FIG. 8 is a perspective view showing the rotatable reflection mirror 8 is coupled to a driving device 81 in accordance with a preferred embodiment of the present invention.
  • the driving device 81 may be a conventional stepping motor, DC motor, or AC motor.
  • the driving device 81 is provided with a mechanical shaft 80 which is mechanically coupled to the rotatable reflection mirror 8 , with reference to FIG. 5. So, the driving device 81 is capable of rotating the rotatable reflection mirror 8 via the mechanical shaft 80 to either the first reflection position as shown in FIG. 6 or the second reflection position as shown in FIG. 7.
  • the position of the rotatable reflection mirror 8 can be detected by the first and second position detecting unites 91 , 92 properly arranged adjacent to the rotatable reflection mirror 8 .
  • the above mentioned first focusing lens 32 and the second focusing lens 33 can be of different optical magnifications so as to achieve different optical scanning resolutions according to requirement at operation of reflective and transparent scanning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

An image scanning device with a rotatable reflection mirror arranged in an optical scanning module thereof for establishing either a reflective or transparent scanning optical path is disclosed. The optical scanning module includes a first focusing lens, a second focusing lens, an image sensing module, a plurality of fixed reflective optical path mirrors, a plurality of fixed transparent optical path mirrors, and a rotatable reflection mirror. At scanning a reflective document, the rotatable reflection mirror is rotated to a first reflection position. A light beam from a first light source projects to the reflective document. The image of the reflective document is reflected by the rotatable reflection mirror and the fixed reflective optical path mirrors, and then received by the image sensing module through the first focusing lens. At scanning a transparent document, the rotatable reflection mirror is rotated to a second reflection position. A light beam from a second light source projects to the transparent document. The image of the transparent document is reflected by the rotatable reflection mirror and the fixed transparent optical path mirrors, and then received by the image sensing module through the second focusing lens.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0001]
  • The present invention relates to an image scanning device with dual scanning modes, and more particularly to an image scanning device including a rotatable reflection mirror arranged in an optical scanning module of the image scanning device for selectively scanning a reflective original document or a transparent original document. [0002]
  • 2. Description of the Prior Art [0003]
  • Typical image scanners are commonly categorized into reflective and transparent types. Reflective type scanner is employed for scanning of reflective document, while transparent type scanner is employed for scanning of transparent document. [0004]
  • Referring to FIGS. 1 and 2, a typical reflective type scanner is shown. The [0005] scanner 1 generally includes a top frame 11 with a document positioning plate 12 which is a plane surface made of for example glass or other light transmittable, substantially rigid material, for supporting a reflective original document 10 to be scanned, defining a document scanning window. A cover 13 is pivotally attached to the top frame 11 of the scanner 1 for covering the document positioning plate 12 during the scanning process.
  • The [0006] reflective type scanner 1 generally includes an optical scanning module 14 and a pair of guiding rails 15 a, 15 b. The optical scanning module 14 is provided with a light source 16, a plurality of light reflection mirrors 171, 172, 173, 174, a focusing lens 18, and an image sensing module 19 such as a Charge Coupling Device (CCD) or a Contact Image Scanning (CIS). The optical scanning module 14 may be moved by a driving device (not shown) along the guiding rails 15 a, 15 b in a direction I. When the optical scanning module 14 completes a scanning process, the image of the reflective original document 10 is scanned.
  • As shown in FIGS. 3 and 4, a typical [0007] transparent type scanner 2 is shown. The scanner 2 also includes a top frame 21 and a document positioning plate 22. A back lighting module 23 is pivotally attached to the top frame 21 of the scanner 2. The back lighting module 23 is provided with a back light source 26 therein.
  • The [0008] transparent type scanner 2 includes an optical scanning module 24 moveably supported by a pair of guiding rails 25 a, 25 b. The optical scanning module 24 includes a plurality of reflection mirrors 271, 272, 273, a focusing lens 28, and an image sensing module 29. The optical scanning module 24 may be moved by a driving device (not shown) along the guiding rails 25 a, 25 b in the direction I. When the optical scanning module 24 completes a scanning process and with the light provided by the back light source 26, the image of the transparent original document 20 supported on the document positioning plate 22 is scanned.
  • The conventional reflective or transparent scanner described above can only conduct a specific scanning mode, i.e. the reflective type scanner can not conduct a transparent scanning process, while the transparent type scanner can not conduct a reflective scanning process. In prior art, there is provided with a mode-selective scanner which is capable of selectively conducting reflective or transparent scanning processes. However, the scanner is too complicated to economically manufacture. In addition, it is too complicate to assemble. [0009]
  • Thus, it is desirable to provide an image scanning device with a switching mechanism which is capable of overcoming the problems described above and facilitating scanning operation. [0010]
    • SUMMARY OF THE INVENTION
  • Consequently, a primary object of the present invention is to provide an image scanning device with a rotatable reflection mirror mounted in the optical scanning module. By means of the rotatable reflection mirror, the scanner is capable of conducting either a reflective scanning mode or a transparent scanning mode. [0011]
  • In order to achieve the object set forth, a scanner for selectively scanning reflective and transparent original document in accordance with the present invention comprises an optical scanning module provided with a rotatable reflection mirror for selectively scanning a reflective original document or a transparent original document. The rotatable reflection mirror may be rotated by a driving device comprising such as a stepping motor and a mechanical shaft coupled to the rotatable reflection mirror. At scanning a reflective document, the rotatable reflection mirror is rotated to a first reflection position. A light beam from a first light source projects to the reflective document. The image of the reflective document is reflected by the rotatable reflection mirror and a number of fixed reflective optical path mirrors, and then received by an image sensing module through a first focusing lens. At scanning a transparent document, the rotatable reflection mirror is rotated to a second reflection position. A light beam from a second light source projects to the transparent document. The image of the transparent document is reflected by the rotatable reflection mirror and a number of fixed transparent optical path mirrors, and then received by the image sensing module through a second focusing lens. [0012]
  • Preferably, two position detecting unites are arranged within an effective rotation radius of the rotatable reflection mirror for detecting the position of the rotatable reflection mirror.[0013]
  • To further understand the present invention, reference is made to the following detailed description of a preferred embodiment of the present invention, as well as the attached drawings, wherein: [0014]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view of a prior art reflective type scanner; [0015]
  • FIG. 2 is a schematic view showing an optical path in an optical scanning module of the reflective type scanner of FIG. 1; [0016]
  • FIG. 3 is a perspective view of a prior art transparent type scanner; [0017]
  • FIG. 4 is a schematic view showing an optical path in an optical scanning module of the transparent type scanner of FIG. 3; [0018]
  • FIG. 5 is a schematic view showing a rotatable reflection mirror, a number of reflection mirrors, two focusing lenses, and an image sensing module are arranged in an optical scanning module of a scanner in accordance with a preferred embodiment of the present invention; [0019]
  • FIG. 6 is a schematic view showing a reflective optical path during scanning a reflective original document in accordance with the present invention, in which the rotatable reflection mirror is at a first reflection position; [0020]
  • FIG. 7 is a schematic view showing a transparent optical path during scanning a transparent original document in accordance with the present invention, in which the rotatable reflection mirror is at a second reflection position; and [0021]
  • FIG. 8 is a perspective view showing the rotatable reflection mirror is coupled to a driving device in accordance with a preferred embodiment of the present invention.[0022]
    • BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Referring to FIG. 5, an [0023] optical scanning module 3 is arranged in a housing of a scanner in accordance with the present invention and which is moveable along a pair of guiding rails arranged in the housing. A document positioning plate 4 is mounted on the housing of the scanner and arranged above the optical scanning module 3 for supporting an original document 7 thereon.
  • The [0024] optical scanning module 3 is provided with a first light source 30 for providing light source during a reflective scanning process. Besides, a second light source 5 is arranged above the document positioning plate 4 for providing back light source during a transparent scanning process. In general, the second light source 5 is arranged in a conventional back lighting module 23 as shown in FIG. 3.
  • The [0025] optical scanning device 3 of the present invention includes an image sensing module 31, a first focusing lens 32, a second focusing lens 33, a plurality of fixed light reflection mirrors 71, 72, 73, 74, and a rotatable reflection mirror 8. The image sensing module 31 includes a charge coupled device (CCD). The first focusing lens 32 has a light receiving inlet 32 a facing to the fixed light reflection mirror 72 and a light projecting outlet 32 b facing to the image sensing module 31. The second focusing lens 33 has a light receiving inlet 33 a facing to the fixed light reflection mirror 74 and a light projecting outlet 33 b facing to the image sensing module 31. In addition, the first focusing lens 32 is particularly arranged at an angle with respect to the second focusing lens 33.
  • The [0026] rotatable reflection mirror 8 may be rotated about a mechanical shaft 80 by a known driving mechanism to a first reflection position as shown in FIG. 6 or a second reflection position as shown in FIG. 7. The position of the rotatable reflection mirror 8 can be detected by a first and second position detecting unites 91, 92 properly arranged adjacent to the rotatable reflection mirror 8.
  • The present invention includes a reflective image optical path and a transparent image optical path. The reflective image optical path is configured by the fixed [0027] light reflection mirrors 71, 72 and the first focusing lens 32. When a reflective original document 5 a is to be scanned, the rotatable reflection mirror 8 is rotated to the first reflection position, as shown in FIG. 6. A light beam as indicated by dashed line from the first light source 30 projects to the reflective original document 5 a supported on the document positioning plate 4 of the scanner frame. The image of the reflective original document 5 a is reflected by the rotatable reflection mirror 8, and the reflection mirrors 71, 72 sequentially. Then, the reflected image of the reflective original document 5 a is received by the image sensing module 31 through the first focusing lens 32.
  • The transparent image optical path of the present invention is configured by the fixed light reflection mirrors [0028] 73, 74 and the second focusing lens 33. When a transparent original document 5 b is to be scanned, the rotatable reflection mirror 8 is rotated to the second reflection position, as shown in FIG. 7. A back light beam as indicated by dashed line from the second light source 6 projects to the transparent original document 5 b supported on the document positioning plate 4 of the scanner frame. The image of the transparent original document 5 b is reflected by the rotatable reflection mirror 8, and the reflection mirrors 73, 74 sequentially. Then, the reflected image of the transparent original document 5 b is received by the image sensing module 31 through the second focusing lens 33.
  • FIG. 8 is a perspective view showing the [0029] rotatable reflection mirror 8 is coupled to a driving device 81 in accordance with a preferred embodiment of the present invention. The driving device 81 may be a conventional stepping motor, DC motor, or AC motor. The driving device 81 is provided with a mechanical shaft 80 which is mechanically coupled to the rotatable reflection mirror 8, with reference to FIG. 5. So, the driving device 81 is capable of rotating the rotatable reflection mirror 8 via the mechanical shaft 80 to either the first reflection position as shown in FIG. 6 or the second reflection position as shown in FIG. 7. The position of the rotatable reflection mirror 8 can be detected by the first and second position detecting unites 91, 92 properly arranged adjacent to the rotatable reflection mirror 8.
  • In practical use, the above mentioned first focusing [0030] lens 32 and the second focusing lens 33 can be of different optical magnifications so as to achieve different optical scanning resolutions according to requirement at operation of reflective and transparent scanning.
  • Although the preferred embodiments of the present invention have been described to illustrate the present invention, it is apparent that changes and modifications in the specifically described embodiments can be carried out without departing from the scope of the invention which is intended to be limited only by the appended claims. [0031]

Claims (6)

What is claimed is:
1. An image scanning device with an optical scanning module for scanning an image of a reflective document by incorporating with a first light source or a transparent document by incorporating with a second light source, comprising:
a first focusing lens having a light receiving inlet and a light projecting outlet;
a second focusing lens having a light receiving inlet and a light projecting outlet, the second focusing lens being arranged at an angle with respect to the first focusing lens;
an image sensing module arranged facing to the light projecting outlets of the first focusing lens and the second focusing lens;
a reflective optical path comprising a plurality of light reflection mirrors arranged in the optical scanning module;
a transparent optical path comprising a plurality of light reflection mirrors arranged in the optical scanning module; and
a rotatable reflection mirror arranged in the reflective optical path and the transparent optical path, rotatable by a driving device to a first reflection position or a second reflection position;
when scanning the reflective document, the rotatable reflection mirror is rotated to the first reflection position in order to reflect a light beam projected from the first light source to the image sensing module through the reflective optical path and the first focusing lens; when scanning the transparent document, the rotatable reflection mirror is rotated to the second reflection position in order to reflect a light beam projected from the second light source to the image sensing module through the transparent optical path and the second focusing lens.
2. The image scanning device as recited in claim 1, wherein the driving device comprises a mechanical shaft mechanically coupled to the rotatable reflection mirror and a motor for rotating the rotatable reflection mirror to the first or second reflection position via the mechanical shaft.
3. The image scanning device as recited in claim 2, wherein the motor is a stepping motor.
4. The image scanning device as recited in claim 1, wherein the image sensing module comprises a Charge Coupled Device.
5. The image scanning device as recited in claim 1, wherein the rotatable reflection mirror is arranged beneath the second light source to receive and reflect the light beam projected from the second light source when scanning the transparent document, and to receive and reflect the light beam projected from the first light source and reflected by the reflective document when scanning the reflective document.
6. The image scanning device as recited in claim 1, the first focusing lens and the second focusing lens having different optical magnifications so as to achieve different optical scanning resolutions at scanning the reflective and transparent documents.
US09/748,001 2000-12-27 2000-12-27 Optical scanning module with rotatable reflection mirror for image scanning device Expired - Lifetime US6421158B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/748,001 US6421158B1 (en) 2000-12-27 2000-12-27 Optical scanning module with rotatable reflection mirror for image scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/748,001 US6421158B1 (en) 2000-12-27 2000-12-27 Optical scanning module with rotatable reflection mirror for image scanning device

Publications (2)

Publication Number Publication Date
US20020080460A1 true US20020080460A1 (en) 2002-06-27
US6421158B1 US6421158B1 (en) 2002-07-16

Family

ID=25007566

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/748,001 Expired - Lifetime US6421158B1 (en) 2000-12-27 2000-12-27 Optical scanning module with rotatable reflection mirror for image scanning device

Country Status (1)

Country Link
US (1) US6421158B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030053160A1 (en) * 2001-09-20 2003-03-20 Umax Data Systems Inc. Scanning method and scanning system free of identifying original's attribute
US20060283951A1 (en) * 2002-07-22 2006-12-21 Transpacific Ip, Ltd. Optical scanner
US20110019072A1 (en) * 2009-07-23 2011-01-27 Hon Hai Precision Industry Co., Ltd. Image capturing device and electronic device using same
US20140160008A1 (en) * 2012-12-10 2014-06-12 Lite-On It Corporation Optical input device and operating method thereof

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW529293B (en) * 2001-09-25 2003-04-21 Veutron Corp Light-guiding apparatus and method capable of varying optical path length
JP3947870B2 (en) * 2002-11-22 2007-07-25 Ｎｅｃアクセステクニカ株式会社 Reader
WO2006047916A1 (en) * 2004-12-28 2006-05-11 Ying-Hui Huang Multifunctional portable data processing system
TWI309129B (en) * 2005-12-16 2009-04-21 Primax Electronics Ltd Optical reading device of scanner
TWI411289B (en) * 2009-03-31 2013-10-01 E Pin Optical Industry Co Ltd U-shape optical path image scanning method and scanning module thereof
TW201039614A (en) * 2009-04-30 2010-11-01 E Pin Optical Industry Co Ltd Penta-mirror multi-reflection scanning module
TW201101798A (en) * 2009-06-30 2011-01-01 E Pin Optical Industry Co Ltd Tetra-mirror multi-reflection scanning module

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW383132U (en) * 1998-07-09 2000-02-21 Microtek Int Inc Optical path converter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030053160A1 (en) * 2001-09-20 2003-03-20 Umax Data Systems Inc. Scanning method and scanning system free of identifying original's attribute
US7440146B2 (en) * 2001-09-20 2008-10-21 Transpacific Ip, Llp Scanning method and scanning system free of identifying original's attribute
US20060283951A1 (en) * 2002-07-22 2006-12-21 Transpacific Ip, Ltd. Optical scanner
US20110019072A1 (en) * 2009-07-23 2011-01-27 Hon Hai Precision Industry Co., Ltd. Image capturing device and electronic device using same
CN101963741A (en) * 2009-07-23 2011-02-02 鸿富锦精密工业（深圳）有限公司 Image pickup module and portable electronic device adopting same
US8363148B2 (en) * 2009-07-23 2013-01-29 Hon Hai Precision Industry Co., Ltd. Image capturing device with multiple image capturing modes and electronic device using same
CN101963741B (en) * 2009-07-23 2013-10-09 鸿富锦精密工业（深圳）有限公司 Image pickup module and portable electronic device adopting same
US20140160008A1 (en) * 2012-12-10 2014-06-12 Lite-On It Corporation Optical input device and operating method thereof

Also Published As

Publication number Publication date
US6421158B1 (en) 2002-07-16

Similar Documents

Publication Publication Date Title
US5814809A (en) Apparatus for optically scanning images using transmissive and reflective light sources
US6421158B1 (en) Optical scanning module with rotatable reflection mirror for image scanning device
JPH0918667A (en) Device to scan original documents
JPH0918670A (en) Flatbed scanner
JPH11164094A (en) Double lens type converging device for double plane type flat scanner
JPH0918669A (en) Device to scan original documents
US6445480B1 (en) Image scanning device with switching mechanism for selectively scanning reflective and transparent document
US6473206B1 (en) Image scanner
JPH11168607A (en) Single lamp illumination system for double planar type flatbed scanner
JP3376030B2 (en) Image reading device
EP0091280B1 (en) Raster scanning apparatus
US7589870B2 (en) Dual-mode scanner capable of performing transmissive and reflective scanning with single side lamp
US5780829A (en) Flat-plate scanner having a beam-splitting prism/mirror and two light emitting sources
JPH0918659A (en) Flatbed scanner
US20070291330A1 (en) Optical Transparent Media Adapter with Magnetically Coupled Optics and Light Guide
US6567191B1 (en) Locating structure for locating a transparency illumination module on an object focal plane of a dual-mode optical scanning device
US5218200A (en) Image scanner with turnable reflecting plate for scanning objects at different locations
JP3567083B2 (en) Scanning device having floating window member
JPH0918658A (en) Scanner
US7554703B2 (en) Optical reading device of scanning apparatus
JP3017775B2 (en) Image reading device
JP3179818B2 (en) Reflective and transmissive document reader
JP3393178B2 (en) Image reading device
JP3161900B2 (en) Image reading device
JP2003037712A (en) Image reader

Legal Events

Date Code Title Description
AS Assignment

Owner name: UMAX DATA SYSTEMS, INC., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YEH, CHIEN-LIANG;REEL/FRAME:011395/0463

Effective date: 20001212

STCF Information on status: patent grant

Free format text: PATENTED CASE

FPAY Fee payment

Year of fee payment: 4

AS Assignment

Owner name: VEUTRON CORPORATION, TAIWAN

Free format text: CHANGE OF NAME;ASSIGNOR:UMAX DATA SYSTEMS INC.;REEL/FRAME:016800/0203

Effective date: 20021029

AS Assignment

Owner name: TRANSPACIFIC IP, LTD.,TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VEUTRON CORPORATION;REEL/FRAME:017564/0747

Effective date: 20050706

Owner name: TRANSPACIFIC IP, LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VEUTRON CORPORATION;REEL/FRAME:017564/0747

Effective date: 20050706

AS Assignment

Owner name: TRANSPACIFIC SYSTEMS, LLC, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TRANSPACIFIC IP LTD.;REEL/FRAME:023107/0267

Effective date: 20090618

Owner name: TRANSPACIFIC SYSTEMS, LLC,DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TRANSPACIFIC IP LTD.;REEL/FRAME:023107/0267

Effective date: 20090618

FPAY Fee payment

Year of fee payment: 8

AS Assignment

Owner name: TITUSVILLE CANAVERAL LLC, DELAWARE

Free format text: MERGER;ASSIGNOR:TRANSPACIFIC SYSTEMS, LLC;REEL/FRAME:030628/0681

Effective date: 20130213

AS Assignment

Owner name: INTELLECTUAL VENTURES I LLC, DELAWARE

Free format text: MERGER;ASSIGNOR:TITUSVILLE CANAVERAL LLC;REEL/FRAME:030639/0330

Effective date: 20130214

FPAY Fee payment

Year of fee payment: 12

AS Assignment

Owner name: INTELLECTUAL VENTURES ASSETS 139 LLC, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INTELLECTUAL VENTURES I LLC;REEL/FRAME:052491/0084

Effective date: 20200416

AS Assignment

Owner name: INTELLECTUAL VENTURES ASSETS 139 LLC, DELAWARE

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE PATENT NUMBERS 7593141 AND 7609407 PREVIOUSLY RECORDED ON REEL 052491 FRAME 0084. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNOR:INTELLECTUAL VENTURES I LLC;REEL/FRAME:052555/0791

Effective date: 20200416

AS Assignment

Owner name: CEDAR LANE TECHNOLOGIES INC., CANADA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INTELLECTUAL VENTURES ASSETS LLC;REEL/FRAME:053495/0721

Effective date: 20200428