Canon 50-250mm f/4.5-5.6 APS-C Patent

overview

  • [Publication number] JP2024-154136 (P2024-154136A)
  • [Release date] October 30, 2024 (2024.10.30)
  • [Name of invention] Zoom lens and imaging device having the same
  • ) [Application date] April 18, 2023 (April 18, 2023)
  • [Applicant]
    [Identification number] 000001007
    [Name or company name] Canon Inc.
  • The present invention provides a zoom lens that has high optical performance, a high zoom ratio, and is compact.
  • 2. Description of the Related Art
    In recent years, there has been a demand for zoom lenses that have high optical performance, a high zoom ratio and are compact as imaging optical systems used in imaging devices.


Example 1

  • Focal length: 51.50-241.32
  • F-number: 4.64-6.49
  • Half angle of view: 14.86-3.24
  • Image height: 13.66
  • Total length: 146.34-188.78
  • Back focus: 17.00-30.58


Example 3

  • Focal length: 50.20-241.32
  • F-number: 4.64-5.77
  • Half angle of view: 15.22-3.24
  • Image height: 13.66
  • Total length: 140.00-185.63
  • Back Focus: 22.47-31.57

via asobinet

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