Canon 20-60mm F4 PZ, 18-45mm F4 PZ, and 16-35mm F4 PZ Lens Patents Found

Canon patents for a Canon 20-60mm F4 PZ, 18-45mm F4 PZ, and 16-35mm F4 PZ lens have been found. You can check them out below:

overview

• [Publication number] JP2025-68536 (P2025-68536A)
• [Release date] April 28, 2025 (2025.4.28)
• [Name of invention] Zoom lens and imaging device having the same
• [Application date] October 16, 2023 (October 16, 2023)
• [Applicant]
  [Identification number] 000001007
  [Name or company name] Canon Inc.
• 2. Description of the Related Art
  In recent years, there has been a demand for zoom lenses equipped with an electric zoom function, as they are suitable for video shooting and the like.
• [0005] It is preferable that
  the movable group in a zoom lens is small and lightweight, and that the amount of movement of the movable group is small. In the zoom lens of Patent Document 1, the first lens group is moved during zooming. The first lens group is relatively heavy, and moving a heavy lens group can degrade optical performance.
• SUMMARY OF THE PRESENT EMBODIMENT
  An object of the present invention is to provide a zoom lens which has a high zoom ratio and high optical performance and can be equipped with an electric zoom function.

Example 1

• Focal length: 20.60-48.50
• F-number: 4.08-1.12
• Half angle of view: 42.00-24.04
• Image height: 18.55-21.63
• Overall length: 125.00
• Back Focus: 13.50

Example 4

• Focal length: 24.72-48.50
• F-number: 4.08-4.12
• Half angle of view: 37.68-24.04
• Image height: 19.09-21.64
• Overall length: 118.16
• Back Focus: 14.35

Example 5

• Focal length: 24.72-58.20
• F-number: 4.08-4.12
• Half angle of view: 38.10-20.39
• Image height: 19.39-21.63
• Total length: 127.50
• Back focus: 20.30

Example 7

• Focal length: 20.60-58.20
• F-number: 4.08-4.12
• Half angle of view: 42.15-20.39
• Image height: 18.65-21.63
• Total length: 130.00
• Back Focus: 13.50

Example 8

• Focal length: 18.54-43.65
• F-number: 4.08-4.12
• Half angle of view: 45.15-26.37
• Image height: 18.63-21.63
• Overall length: 125.00
• Back Focus: 13.50

Example 10

• Focal length: 16.48-33.95
• F-number: 4.08-4.12
• Half angle of view: 48.64-32.51
• Image height: 18.72-21.62
• Overall length: 122.38
• Back focus: 14.00

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