Dayong Li

13 related patents across 14 interactive lens diagrams.

View in relationship map →

Group by

Anhui Changgeng Optics Technology Co., Ltd.(7)

CN 110161666 A2019

Assignee: Anhui Changgeng Optics Technology Co., Ltd.

Inventors: Dayong Li

Example 2LAOWA 65mm f/2.8 2× Ultra Macro APO— 14 ELEMENTS / 10 GROUPS, f ≈ 66.0 mm (design) / 65 mm (marketed)

CN 210573001 U2020

Assignee: Anhui Changgeng Optics Technology Co., Ltd.

Inventors: Dayong Li

Example 1LAOWA 24mm f/14 2× Macro Probe— 27 ELEMENTS / 19 GROUPS, f ≈ 23.7 mm

CN 116520542 A2023

Assignee: Anhui Changgeng Optics Technology Co., Ltd.

Inventors: Dayong Li

Example 1LAOWA 90mm f/2.8 2× Ultra Macro APO— 13 ELEMENTS / 10 GROUPS, DESIGN f = 87.06 mm Example 2LAOWA 58mm f/2.8 2× Ultra Macro APO— 14 ELEMENTS / 11 GROUPS, f ≈ 59.2 mm

CN 112285890 B2024

Assignee: Anhui Changgeng Optics Technology Co., Ltd.

Inventors: Dayong Li

Example 2LAOWA ARGUS 45mm f/0.95 FF— 13 ELEMENTS / 9 GROUPS, DESIGN f = 44.89 mm

CN 118584637 A2024

Assignee: Anhui Changgeng Optics Technology Co., Ltd.

Inventors: Dayong Li

Example 1LAOWA 100mm f/2.8 Tilt-Shift 1× Macro— 13 ELEMENTS / 10 GROUPS, DESIGN f = 101.99 mm

CN 118671950 A2024

Assignee: Anhui Changgeng Optics Technology Co., Ltd.

Inventors: Dayong Li

Example 1LAOWA 55mm f/2.8 Tilt-Shift 1× Macro— 14 ELEMENTS / 11 GROUPS, DESIGN f = 55.02 mm

CN 120276109 A2025

Assignee: Anhui Changgeng Optics Technology Co., Ltd.

Inventors: Dayong Li

Example 1LAOWA 180mm f/4.5 1.5× Ultra Macro APO— 12 ELEMENTS / 9 GROUPS, DESIGN f = 174.92 mm

Nikon Corporation(1)

US 8,169,718 B22012

Assignee: Tamron Co., Ltd., Nikon Corporation

Inventors: Dayong Li, Hiroshi Yamamoto, Hiroki Harada

Embodiment 4NIKON AF-S DX NIKKOR 10-24mm f/3.5-4.5 G ED— 14 PHYSICAL ELEMENTS / 9 GROUPS, 16 MODELED REFRACTIVE MEDIA ENTRIES

Tamron Co., Ltd.(6)

US 2008/0212200 A12008

Assignee: Tamron Co., Ltd.

Inventors: Dayong Li, Akio Arakawa

Example 1TAMRON SP AF 70-200mm f/2.8 Di LD [IF] MACRO— 18 ELEMENTS / 13 GROUPS, 70-200mm f/2.8 (MARKETING)

JP 2009-168934 A2009

Assignee: Tamron Co., Ltd.

Inventors: Hisayuki Yamanaka, Dayong Li

Embodiment 3SONY 70-300mm f/4.5-5.6 G SSM— 16 ELEMENTS / 11 GROUPS, DESIGN f = 71.77-291.96 mm

US 8,049,968 B22011

Assignee: Tamron Co., Ltd.

Inventors: Hisayuki Yamanaka, Dayong Li

Embodiment 6SONY 70-400mm f/4-5.6 G SSM II— 18 ELEMENTS / 12 GROUPS, PATENT 72.06-388.09mm

US 8,169,718 B22012

Assignee: Tamron Co., Ltd., Nikon Corporation

Inventors: Dayong Li, Hiroshi Yamamoto, Hiroki Harada

Embodiment 4NIKON AF-S DX NIKKOR 10-24mm f/3.5-4.5 G ED— 14 PHYSICAL ELEMENTS / 9 GROUPS, 16 MODELED REFRACTIVE MEDIA ENTRIES

US 8,810,918 B22014

Assignee: Tamron Co., Ltd.

Inventors: Dayong Li

Example 4TAMRON SP 24-70mm f/2.8 Di VC USD— 17 physical elements / 12 groups (18 modeled media), 24.7-67.799 mm design / 24-70 mm marketed

JP 2017-116646 A2017

Assignee: Tamron Co., Ltd.

Inventors: Dayong Li

Example 1TAMRON 18-400mm f/3.5-6.3 Di II VC HLD— 16 ELEMENTS / 11 GROUPS, 18-400mm MARKETING / 18.5105-389.00mm PATENT

Dayong Li

Anhui Changgeng Optics Technology Co., Ltd.(7)

CN 110161666 A↗2019

CN 210573001 U↗2020

CN 116520542 A↗2023

CN 112285890 B↗2024

CN 118584637 A↗2024

CN 118671950 A↗2024

CN 120276109 A↗2025

Nikon Corporation(1)

US 8,169,718 B2↗2012

Tamron Co., Ltd.(6)

US 2008/0212200 A1↗2008

JP 2009-168934 A↗2009

US 8,049,968 B2↗2011

US 8,169,718 B2↗2012

US 8,810,918 B2↗2014

JP 2017-116646 A↗2017

CN 110161666 A2019

CN 210573001 U2020

CN 116520542 A2023

CN 112285890 B2024

CN 118584637 A2024

CN 118671950 A2024

CN 120276109 A2025

US 8,169,718 B22012

US 2008/0212200 A12008

JP 2009-168934 A2009

US 8,049,968 B22011

US 8,169,718 B22012

US 8,810,918 B22014

JP 2017-116646 A2017