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FR2857464B3 - OBJECTIVE SYSTEM - Google Patents

OBJECTIVE SYSTEM

Info

Publication number
FR2857464B3
FR2857464B3 FR0308387A FR0308387A FR2857464B3 FR 2857464 B3 FR2857464 B3 FR 2857464B3 FR 0308387 A FR0308387 A FR 0308387A FR 0308387 A FR0308387 A FR 0308387A FR 2857464 B3 FR2857464 B3 FR 2857464B3
Authority
FR
France
Prior art keywords
objective system
objective
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.)
Expired - Lifetime
Application number
FR0308387A
Other languages
French (fr)
Other versions
FR2857464A3 (en
Inventor
Kuo Wen Chang
Ming Liang
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.)
Nucam Corp
Original Assignee
Nucam Corp
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
Priority to GB0315073A priority Critical patent/GB2403300B/en
Application filed by Nucam Corp filed Critical Nucam Corp
Priority to FR0308387A priority patent/FR2857464B3/en
Priority to DE20310657U priority patent/DE20310657U1/en
Publication of FR2857464A3 publication Critical patent/FR2857464A3/en
Application granted granted Critical
Publication of FR2857464B3 publication Critical patent/FR2857464B3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
    • G02B15/1435—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative
    • G02B15/143507—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative arranged -++

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
FR0308387A 2003-06-27 2003-07-09 OBJECTIVE SYSTEM Expired - Lifetime FR2857464B3 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0315073A GB2403300B (en) 2003-06-27 2003-06-27 Three group zoom lens system with aspheric surface
FR0308387A FR2857464B3 (en) 2003-06-27 2003-07-09 OBJECTIVE SYSTEM
DE20310657U DE20310657U1 (en) 2003-06-27 2003-07-11 Zoom lens system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0315073A GB2403300B (en) 2003-06-27 2003-06-27 Three group zoom lens system with aspheric surface
FR0308387A FR2857464B3 (en) 2003-06-27 2003-07-09 OBJECTIVE SYSTEM
DE20310657U DE20310657U1 (en) 2003-06-27 2003-07-11 Zoom lens system

Publications (2)

Publication Number Publication Date
FR2857464A3 FR2857464A3 (en) 2005-01-14
FR2857464B3 true FR2857464B3 (en) 2005-06-24

Family

ID=34139214

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0308387A Expired - Lifetime FR2857464B3 (en) 2003-06-27 2003-07-09 OBJECTIVE SYSTEM

Country Status (3)

Country Link
DE (1) DE20310657U1 (en)
FR (1) FR2857464B3 (en)
GB (1) GB2403300B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5262897A (en) * 1991-12-13 1993-11-16 Olympus Optical Co., Ltd. Zoom lens system
JP3451471B2 (en) * 1996-09-09 2003-09-29 株式会社リコー Small zoom lens

Also Published As

Publication number Publication date
GB2403300B (en) 2005-08-03
DE20310657U1 (en) 2003-09-18
GB2403300A (en) 2004-12-29
GB0315073D0 (en) 2003-07-30
FR2857464A3 (en) 2005-01-14

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