AU685728B1 - Auto-focus mechanism - Google Patents

Auto-focus mechanism

Info

Publication number
AU685728B1
AU685728B1 AU23489/97A AU2348997A AU685728B1 AU 685728 B1 AU685728 B1 AU 685728B1 AU 23489/97 A AU23489/97 A AU 23489/97A AU 2348997 A AU2348997 A AU 2348997A AU 685728 B1 AU685728 B1 AU 685728B1
Authority
AU
Australia
Prior art keywords
auto
focus mechanism
focus
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.)
Ceased
Application number
AU23489/97A
Inventor
Henry Peng
Kevin Yang
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.)
Veutron Corp
Original Assignee
Umax Data System Inc
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 Umax Data System Inc filed Critical Umax Data System Inc
Priority to AU23489/97A priority Critical patent/AU685728B1/en
Priority to GB9710382A priority patent/GB2325532A/en
Application granted granted Critical
Publication of AU685728B1 publication Critical patent/AU685728B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/02409—Focusing, i.e. adjusting the focus of the scanning head
    • 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
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • 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
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • 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
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • H04N1/0405—Different formats, e.g. A3 and A4
    • 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
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • H04N1/042—Details of the method used
    • H04N1/0435—Optical element switching, e.g. switching lenses into a single optical path
    • 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
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • H04N1/042—Details of the method used
    • H04N1/0455—Details of the method used using a single set of scanning elements, e.g. the whole of and a part of an array respectively for different formats
    • 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
AU23489/97A 1997-05-19 1997-05-19 Auto-focus mechanism Ceased AU685728B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU23489/97A AU685728B1 (en) 1997-05-19 1997-05-19 Auto-focus mechanism
GB9710382A GB2325532A (en) 1997-05-19 1997-05-20 Optical scanner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU23489/97A AU685728B1 (en) 1997-05-19 1997-05-19 Auto-focus mechanism
GB9710382A GB2325532A (en) 1997-05-19 1997-05-20 Optical scanner

Publications (1)

Publication Number Publication Date
AU685728B1 true AU685728B1 (en) 1998-01-22

Family

ID=25618972

Family Applications (1)

Application Number Title Priority Date Filing Date
AU23489/97A Ceased AU685728B1 (en) 1997-05-19 1997-05-19 Auto-focus mechanism

Country Status (2)

Country Link
AU (1) AU685728B1 (en)
GB (1) GB2325532A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0967505A2 (en) * 1998-06-18 1999-12-29 Agfa Corporation Autofocus process and system with fast multi-region sampling
EP1112654A1 (en) * 1998-09-08 2001-07-04 Pakon Inc. Film scanner

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003125172A (en) * 2001-10-10 2003-04-25 Pfu Ltd Control method for image reader
JP3974767B2 (en) * 2001-10-10 2007-09-12 株式会社Ｐｆｕ Image reading device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010036A1 (en) * 1988-04-06 1989-10-19 Helioprint A/S Scanner for scanning an original document
JPH06141224A (en) * 1992-10-23 1994-05-20 Casio Comput Co Ltd Automatic focusing adjusting device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3068912D1 (en) * 1979-12-17 1984-09-13 Ibm Optical element adjustment apparatus and method
US4427998A (en) * 1982-04-15 1984-01-24 Teletype Corporation Apparatus for adjusting a facsimile document scanner
JPS6046540A (en) * 1983-08-24 1985-03-13 Asahi Optical Co Ltd Focusing point magnification matching device of variable magnification copying machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010036A1 (en) * 1988-04-06 1989-10-19 Helioprint A/S Scanner for scanning an original document
JPH06141224A (en) * 1992-10-23 1994-05-20 Casio Comput Co Ltd Automatic focusing adjusting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0967505A2 (en) * 1998-06-18 1999-12-29 Agfa Corporation Autofocus process and system with fast multi-region sampling
EP0967505A3 (en) * 1998-06-18 2003-07-30 Agfa Corporation Autofocus process and system with fast multi-region sampling
EP1112654A1 (en) * 1998-09-08 2001-07-04 Pakon Inc. Film scanner
EP1112654A4 (en) * 1998-09-08 2006-08-02 Eastman Kodak Co Film scanner

Also Published As

Publication number Publication date
GB2325532A (en) 1998-11-25
GB9710382D0 (en) 1997-07-16

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired