Patent · US Active

Telephoto optical imaging system and zoom camera apparatus

US11656445B2 · kind B2 · utility

1Cited by

3References

19Claims

0Family size

Assignee

Zhejiang Sunny Optics Co., Ltd · CN

Inventors

Fujian Dai · Ningbo City, CN
Kaiyuan Zhang · Ningbo City, CN
Liefeng Zhao · 丈亭镇, CN

Key dates

Filing date	Dec 14, 2020
Grant date	May 23, 2023
Priority date	—
Expiry date	Jun 25, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG02B17/0896
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The present disclosure discloses a telephoto optical imaging system and zoom camera apparatus. The telephoto optical imaging system includes, sequentially from an object side to an image side along an optical axis, a first lens having positive refractive power, a second lens having negative refractive power, an optical path turning prism, and a triangular prism. A total effective focal length F1 of the telephoto optical imaging system may satisfy F1>40 mm. The zoom camera apparatus includes the telephoto optical imaging system and a short-focus optical imaging system arranged in parallel with the telephoto optical imaging system. A total effective focal length F1 of the telephoto optical imaging system and a total effective focal length F2 of the short-focus optical imaging system satisfy F1/F2>5.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.