- Applicant: Tamron Co., Ltd.
Publication number: P2022055483
Application number: P 2020162936
Publication date: 2022-04-08 Title
of invention: Zoom lens and image pickup device
- PROBLEM TO BE SOLVED: To provide a compact zoom lens and an image pickup device in which the fluctuation of the position of the center of gravity is small.
- With the demand for high image quality of digital cameras, the size of the image sensor is increasing and the short flange back is being adopted by mirrorless cameras, etc., and the miniaturization of the optical system is required. In addition, cameras mounted on moving objects such as drones have become widespread, and in order to realize stable shooting even when moving, there is a demand for a zoom lens in which the position of the center of gravity does not fluctuate during zooming.
- According to the present invention, it is possible to provide a compact zoom lens and an image pickup device in which the fluctuation of the position of the center of gravity at the time of scaling is small.
- Example 1 (28-75mm F4)
Focal length 28.8419 44.3139 72.7392
F number 4.1128 4.1402 4.1053
Half angle of view 37.8908 26.1810 15.9258
Image height 20.2060 21.4087 21.6330 Overall
length 130.000 130.000 130.000
- Example 3 (28-80mm F4.5)
Focal length 28.8400 44.3100 77.2417
F number 4.4078 4.3636 4.5054
Half angle of view 37.8977 26.4518 15.2674
Image height 20.2060 21.4087 21.6330 Overall
length 140.170 140.170 140.170
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