US20110134550A1 - Lens module - Google Patents

Lens module Download PDF

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Publication number
US20110134550A1
US20110134550A1 US12788302 US78830210A US20110134550A1 US 20110134550 A1 US20110134550 A1 US 20110134550A1 US 12788302 US12788302 US 12788302 US 78830210 A US78830210 A US 78830210A US 20110134550 A1 US20110134550 A1 US 20110134550A1
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Prior art keywords
lens module
barrel
holder
ring
protrusions
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
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US12788302
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US7969669B1 (en )
Inventor
Cheng-Shiun Wu
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.)
Hon Hai Precision Industry Co Ltd
Original Assignee
Hon Hai Precision Industry Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification

Abstract

A lens module includes a holder, a barrel, a lens, and a focus ring. The barrel is accommodated in the holder and threadedly coupled to the holder. The lens is received in the barrel. The focus ring surrounds and is securely fixed with the barrel. The focus ring is sandwiched between the holder and the barrel. The focus ring has at least two protrusions formed on an outer surface thereof. The at least two protrusions are symmetrical about a center of the focus ring.

Description

    BACKGROUND
  • 1. Technical Field
  • The present disclosure relates to optical imaging, and particularly to a lens module.
  • 2. Description of Related Art
  • A typical lens module includes a barrel and a holder. To achieve focusing, the barrel is rotated relative to the holder. Usually, the torsion needed to rotate the barrel should be in a predetermined range. When the torsion needed is greater than the predetermined range, the lens module might be unsatisfactory.
  • Therefore, it is desirable to provide a new lens module, which can overcome the above-mentioned limitations.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a side cross-sectional view of a lens module, according to an embodiment.
  • FIG. 2 is a top view of a focus ring of the lens module of FIG. 1.
  • DETAILED DESCRIPTION
  • Referring to FIGS. 1-2, a lens module 100 according to an embodiment is shown. The lens module 100 includes a holder 10, a barrel 20, a lens 30, and a focus ring 40.
  • The holder 10 is a stepped cylinder and defines a stepped through hole 11. The holder 10 includes a first part 102, a second part 104, and a third part 106 in order from an object side to an image side. An inner diameter of the first part 102 is larger than that of the second part 104. The holder 10 includes an internal screw thread 11 b formed on the inner surface of the second part 104.
  • The barrel 20 is cylindrical and has a receiving space defined therein. The lens 30 is received in the receiving space. The barrel 20 includes a first portion 202 and a second portion 204. A circular recess 206 is defined around an outer cylindrical surface of the first portion 202 and located at a free end of the first portion 202. An external screw thread 21 b is formed on an outer cylindrical surface of the second portion 204. The external screw thread 21 b is engaged with the internal screw thread 11 b. The first portion 202 is spaced apart from the first part 102.
  • The focus ring 40 includes an inner surface 41, an outer surface 42, and at least two protrusions 42 a formed on the outer surface 42. The focus ring 40 surrounds the first portion 202 of the barrel 20 and engages in the circular recess 206. The focus ring 40 is firmly adhered to the barrel 20 via e.g., an adhesive. The focus ring 40 is sandwiched between an inner surface 11 a of the first part 102 of the holder 10 and the outer surface of the barrel 20. The at least two protrusions 42 a are symmetrical about a center 43 of the focus ring 40. In the present embodiment, the focus ring 40 a includes four protrusions 42 a evenly distributed on the outer surface 42. The focus ring 40 may be made of the same material as the barrel 20, for example, plastic. The focus ring 40 may be integrally formed with the barrel 20. In the present embodiment, each of the protrusions 42 a is hemispherical. In alternative embodiments, each of the protrusions 42 can be hemi-cylindrical.
  • In test, if the torsion needed to rotate the barrel 20 relative to the holder 10 is greater than a predetermined torsion during focusing, the lens module 100 may fail to reach a required standard. In this case, the barrel 20, together with the focus ring 40, is detached from the holder 10, and the protrusions 42 a are ground/polished to be smoother and smaller. In this way, the torsion needed to rotate the barrel 20 relative to the holder 10 is decreased so that the corrected lens module 100 meets the required standard.
  • While various embodiments have been described, it is to be understood that the disclosure is not limited thereto. To the contrary, various modifications and similar arrangements (as would be apparent to those skilled in the art), are also intended to be covered. Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.

Claims (17)

  1. 1. A lens module, comprising:
    a holder;
    a barrel accommodated in the holder and threadedly coupled to the holder;
    a lens received in the barrel; and
    a ring surrounding and securely fixed with the barrel, the ring being sandwiched between the holder and the barrel, the ring having at least two protrusions formed on an outer surface thereof, the at least two protrusions being symmetrical about a center of the ring.
  2. 2. The lens module of claim 1, wherein each protrusion is hemispherical or hemi-cylindrical.
  3. 3. The lens module of claim 1, wherein the at least two protrusions are evenly distributed on the outer surface.
  4. 4. The lens module of claim 1, wherein the ring and the barrel are made of the same material.
  5. 5. The lens module of claim 1, wherein the ring and the barrel are integrally formed with each other.
  6. 6. The lens module of claim 1, wherein the ring is made of plastic.
  7. 7. A lens module, comprising:
    a holder;
    a barrel received in the holder and threadedly engaged with the holder;
    a lens positioned in the barrel; and
    a ring sandwiched between the holder and the barrel and surrounding the barrel.
  8. 8. The lens module of claim 7, wherein the ring is made of plastic.
  9. 9. The lens module of claim 7, wherein the ring and the barrel are made of the same material.
  10. 10. The lens module of claim 7, wherein the ring and the barrel are integrally formed with each other.
  11. 11. The lens module of claim 7, wherein the ring comprises at least two protrusions formed on an outer surface thereof, and the at least two protrusions contact an inner surface of the holder.
  12. 12. The lens module of claim 11, wherein each of the at least two protrusions is hemispherical or hemi-cylindrical.
  13. 13. The lens module of claim 11, wherein the at least two protrusions are evenly distributed on the outer surface.
  14. 14. The lens module of claim 11, wherein the holder comprises a first part and a second part, and an internal screw thread is formed on an inner surface of the second part; the barrel comprises a first portion and a second portion, and an external screw thread is formed on an outer surface of the second portion; the external screw thread is engaged with the internal screw thread; the first portion is spaced apart from the first part.
  15. 15. The lens module of claim 14, wherein the ring is positioned between an inner surface of the first part and an outer surface of the first portion.
  16. 16. The lens module of claim 15, wherein a circular recess is defined around the outer surface of the first portion and located at a free end of the first portion, and the ring is positioned in the circular recess.
  17. 17. The lens module of claim 7, wherein the holder is a stepped cylinder.
US12788302 2009-12-04 2010-05-27 Lens module Active US7969669B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200910310933.X 2009-12-04
CN 200910310933 CN102087397B (en) 2009-12-04 2009-12-04 Lens module
CN200910310933 2009-12-04

Publications (2)

Publication Number Publication Date
US20110134550A1 true true US20110134550A1 (en) 2011-06-09
US7969669B1 US7969669B1 (en) 2011-06-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
US12788302 Active US7969669B1 (en) 2009-12-04 2010-05-27 Lens module

Country Status (2)

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US (1) US7969669B1 (en)
CN (1) CN102087397B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008087485A3 (en) * 2006-09-14 2009-04-23 Tessera Tech Hungary Kft Imaging system with relaxed assembly tolerances and associated methods
EP2104877A4 (en) * 2006-09-14 2010-02-24 Tessera Tech Hungary Kft Imaging system with improved image quality and associated methods
US8310584B2 (en) 2010-04-29 2012-11-13 Victory Gain Group Corporation Image sensing device having thin thickness

Citations (15)

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US3272327A (en) * 1963-12-05 1966-09-13 Busch John Article dispenser with plastic twisting mechanism
US3773405A (en) * 1972-05-10 1973-11-20 Minolta Camera Kk Device for displacing photographic lens
US4156469A (en) * 1977-09-23 1979-05-29 Laskey John G Method of and apparatus for recovery of cores from soft and unconsolidated earth materials
US4395096A (en) * 1981-10-13 1983-07-26 Leupold & Stevens, Inc. Variable magnification telescopic sight having reticle centering mount
US5448587A (en) * 1994-12-27 1995-09-05 Huang; Chaochi Structure of laser module
US5806964A (en) * 1984-09-06 1998-09-15 Mag Instrument, Inc. Miniature flashlight
US6359682B1 (en) * 1999-10-15 2002-03-19 Hyundai Motor Company Fluid flow velocity measuring system for internal combustion engine
US7009654B2 (en) * 2001-02-26 2006-03-07 Mitsubishi Denki Kabushiki Kaisha Image pickup apparatus
US7221524B2 (en) * 2004-01-30 2007-05-22 Fujifilm Corporation Lens unit and compact image pickup module
US7460317B2 (en) * 2005-07-09 2008-12-02 Altus Technology Inc. Digital camera module with improved image quality
US20080309814A1 (en) * 2007-06-15 2008-12-18 Sharp Kabushiki Kaisha Solid-state image pickup device and electronic apparatus including same
US20080309807A1 (en) * 2007-06-15 2008-12-18 Sharp Kabushiki Kaisha Solid-state image pickup device and electronic apparatus including same
US20090219433A1 (en) * 2008-02-28 2009-09-03 Sharp Kabushiki Kaisha Solid-state image pickup device and electronic apparatus including same
US7697061B2 (en) * 2005-06-17 2010-04-13 Hon Hai Precision Industry Co., Ltd. Apparatus for increasing field of view of an optical system
US7715130B2 (en) * 2007-10-22 2010-05-11 Hon Hai Precision Industry Co., Ltd. Lens module

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006301291A (en) 2005-04-20 2006-11-02 Fujinon Corp The lens barrel
JP2007171726A (en) 2005-12-26 2007-07-05 Nidec Copal Corp Lens barrel
CN101339282A (en) 2007-07-06 2009-01-07 鸿富锦精密工业(深圳)有限公司;鸿海精密工业股份有限公司 Camera module group
CN101363950A (en) 2007-08-10 2009-02-11 鸿富锦精密工业(深圳)有限公司;鸿海精密工业股份有限公司 Lens cone and method for manufacturing same

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272327A (en) * 1963-12-05 1966-09-13 Busch John Article dispenser with plastic twisting mechanism
US3773405A (en) * 1972-05-10 1973-11-20 Minolta Camera Kk Device for displacing photographic lens
US4156469A (en) * 1977-09-23 1979-05-29 Laskey John G Method of and apparatus for recovery of cores from soft and unconsolidated earth materials
US4395096A (en) * 1981-10-13 1983-07-26 Leupold & Stevens, Inc. Variable magnification telescopic sight having reticle centering mount
US5806964A (en) * 1984-09-06 1998-09-15 Mag Instrument, Inc. Miniature flashlight
US5448587A (en) * 1994-12-27 1995-09-05 Huang; Chaochi Structure of laser module
US6359682B1 (en) * 1999-10-15 2002-03-19 Hyundai Motor Company Fluid flow velocity measuring system for internal combustion engine
US7009654B2 (en) * 2001-02-26 2006-03-07 Mitsubishi Denki Kabushiki Kaisha Image pickup apparatus
US7221524B2 (en) * 2004-01-30 2007-05-22 Fujifilm Corporation Lens unit and compact image pickup module
US7697061B2 (en) * 2005-06-17 2010-04-13 Hon Hai Precision Industry Co., Ltd. Apparatus for increasing field of view of an optical system
US7460317B2 (en) * 2005-07-09 2008-12-02 Altus Technology Inc. Digital camera module with improved image quality
US20080309814A1 (en) * 2007-06-15 2008-12-18 Sharp Kabushiki Kaisha Solid-state image pickup device and electronic apparatus including same
US20080309807A1 (en) * 2007-06-15 2008-12-18 Sharp Kabushiki Kaisha Solid-state image pickup device and electronic apparatus including same
US7715130B2 (en) * 2007-10-22 2010-05-11 Hon Hai Precision Industry Co., Ltd. Lens module
US20090219433A1 (en) * 2008-02-28 2009-09-03 Sharp Kabushiki Kaisha Solid-state image pickup device and electronic apparatus including same

Also Published As

Publication number Publication date Type
US7969669B1 (en) 2011-06-28 grant
CN102087397A (en) 2011-06-08 application
CN102087397B (en) 2013-09-18 grant

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