Tamron 13mm f/1.8 Di III-A APS-C Mirrorless Lens Patent Spotted

Asobinet spotted a patent for the Tamron 13mm f/1.8 Di III-A APS-C mirrorless lens.

• Tamron 17-70mm f/2.8: BHphoto / AmazonUS / Adorama
• Tamron 18-300mm f/3.5-6.3: BHphoto / AmazonUS / Adorama
• Tamron 150-500mm f/5-6.7: BHphoto / AmazonUS / Adorama
• Tamron 11- 20mm F / 2.8 Di III-A RXD – hinted to come here

Down below are all the details:

• entrudder: Tamron Co., Ltd.
  Public number: P2023019072
  Application number: P 2021123541
  Release date: 2023-02-09
  Name of the invention: Optical system and imaging equipment
• [Issue] Provide high-performance optical systems and imaging devices with small size and large caliber.
• Conventional technologies have room for consideration from the perspective of balancing miniaturization and high optical performance. For example, the technology described in Patent Document 1 and 2 is a large-diameter optical system, but the correction of magnification chromatic aberration is insufficient. The technology described in Patent Document 3 has room for consideration in the placement of lenses in the first lens group, and the balance between shortening the optical total length and high performance is insufficient.
• The challenge of this invention is to provide a high-performance optical system and imaging device with a small size and large caliber.
• Example 1 (13mm F1.8)
  Focal length 13.1301 13.1331 13.1412
  F number 1.8023 1.8197 1.8812
  Half-width angle 48.5322 48.4523 48.1981

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