A zoom lens, including in order from an object side to an image side: a first lens unit; a second lens unit; a third lens unit; and a fourth lens unit, in which the second lens unit includes four lenses as a whole, in which a first lens and a second lens are disposed successively …

Legal parties

Inventors (applicants): Masao Hori
Assignees (initial): Canon Kabushiki Kaisha JP
Agents: Rossi, Kimms & McDowell LLP (attorney)

The application was examined by Alicia M Harrington (USPTO dept. 2872)


  • 1. A zoom lens, comprising in order from an object side to an image side …
  • 2. A zoom lens according to claim 1 , wherein the following conditional expression is satisfied …
  • 3. A zoom lens according to claim 1 , …

International priority data

JP: 2010-206634 / Sep. 15, 2010 (national)

Cited documents


  • JP 2008-197533 A, Aug. 1, 2008
  • Kusaka US 7583449 B2, Sep. 1, 2009
  • Oomura et al. US 6956704 B2, Oct. 1, 2005
  • JP 2010-091788 A, Apr. 1, 2010
  • JP 2004-264457 A, Sep. 1, 2004
  • Takahashi et al. US 4690513 A / 359/686, Sep. 1, 1987
  • Nurishi US 7903345 B2, Mar. 1, 2011
  • Shirasuna US 2009/0296231 A1 / 359/687, Dec. 1, 2009


Brief Description of the Drawings

FIG. 1 is a lens cross-sectional view in a state in which focus is at infinity at a wide-angle end according to Numerical Embodiment 1. FIG. 2A is an aberration …


Background of the Invention

1. Field of the Invention The present invention relates to a zoom lens and an image pickup apparatus including the zoom lens, and more particularly, to a zoom lens suitable …

Description of the Embodiments

Preferred embodiments of the present invention will now be described in detail in accordance with the accompanying drawings. A zoom lens of the present invention includes in order from an object …

Embodiment 1

In the zoom lens of Embodiment 1 illustrated in FIG. 1 , the second lens unit U2 corresponds to an 11th surface to a 17th surface in Numerical Embodiment 1. The second …

More details about Zoom Lens and Image Pickup Apparatus Including the Same

Miscellaneous patent data

The applicant's first name is Masao, and his last name is Hori, the patent was granted on Sep. 3, 2013, developed by Masao Hori, the published agent's company name - Rossi, Kimms & McDowell LLP, 26 figures are supplied with the description, the application was examined by Alicia M Harrington (2872 USPTO department), the assignee classification - a foreign company or corporation, the patent extension term is 37 days, the invention is titled Zoom Lens and Image Pickup Apparatus Including the Same, the exemplary claims include number 1, categorized under + - + + Arrangement as a primary classification, the recorded assignee company name is Canon Kabushiki Kaisha, the exemplary patent drawings are Zoom Lens and Image Pickup, Lens cross-sectional view in a state, graph in the state, graph in the state, the patent particularly claims a zoom lens, comprising in order from an object side to an image…, the known inventor's name is Hori Masao, illustrated by 13 drawings, the protection scope is defined by 19 claims, the application number is 13/211,379 (U.S.), similar patents are classified under frustrated total internal reflection, plural transverse movements, Rotation axis traversely oriented relative to reflective element, adding telescopic attachments, two – components being compound, using multifaceted mirrors, Modulated light beam, controlling the phase of light, used as aids for focusing, Mounted adjacent roadway, the application publication date is Aug. 17, 2011, the grant number is 08526120.

Invention classification information

The invention is classified under + - + + Arrangement, Four groups, 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. The designated search classifications include With variable magnification, Four groups, + - + + Arrangement, Optically compensated.

Patent details
Publication number 08526120
Publication date Sep. 3, 2013
Kind code B2
Application number 13/211,379
Application date Aug. 17, 2011
Application type U
Application series code 13
Extension term 37
National classification 359/687
Total number of claims 19
Exemplary claims 1
Number of drawings 13
Number of figures 26
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