Canon 70-200mm f/4 IS and APS-C Canon 18-50mm f/4 IS Patents Found

Patents were found for a Canon 70-200mm f/4 IS and APS-C Canon 18-50mm f/4 IS which you can read below:

overview

• [Publication number] P2025082363
• [Release date] 2025-05-29
• [Name of invention] Zoom lens and imaging device
• [Application date] 2023-11-17
• [Applicant]
  [Identification number] 000001007
  [Name or company name] Canon Inc.
• A small and lightweight positive lead type zoom lens is provided.
• The present
  invention provides a positive-lead type zoom lens which has a long focal length at the telephoto end, in which various aberrations are well corrected, and which is small and lightweight.

Example 1

• Focal length: 73.68-194.48
• F-number: 4.10
• Half angle of view: 16.36-6.35
• Image height: 21.64
• Total length: 198.01
• Back focus: 49.13-65.78

Example 4

• Focal length: 18.54-52.02
• F-number: 4.10
• Half angle of view: 33.06-14.50
• Image height: 13.66
• Total length: 130.47
• Back Focus: 14.72-14.72

via asobinet