Lens barrel structure and image capture apparatus

Details Lens barrel structure and image capture apparatus Lens barrel structure and image capture apparatus

2007-06-05

2007-06-05

Perkey, W. B. (Department: 2851)

Photography

Having variable focal length of camera objective

Power zoom

Reexamination Certificate

active

11092895

ABSTRACT:
Disclosed is a lens barrel structure comprises: a base; a lens barrel provided on the base; a lens moving mechanism provided in the lens barrel, the lens moving mechanism supporting a lens movably in an optical axis direction thereof and being supplied with a rotational drive force thereby to move the lens in the optical axis direction; a lens drive mechanism provided to the base, the lens drive mechanism supplying the lens moving mechanism with the rotational drive force, and including a motor including an output shaft, a drive gear provided to the output shaft, and a gear train that meshes with the drive gear to supply motive power of the motor to the lens moving mechanism; and a detecting mechanism that detects a rotation speed of the motor. The detecting mechanism includes a sensing plate that is provided to the output shaft and that rotates integrally with the output shaft, and a detector that detects rotation of the sensing plate; and of gears included in the gear train, a first gear to mesh with the drive gear is supported in a cantilever support manner on the side of the base.

REFERENCES:
patent: 2002/0071672 (2002-06-01), Omiya
patent: 2004/0062190 (2004-04-01), Imai
patent: 2001-194574 (2001-07-01), None
patent: 2002-318338 (2002-10-01), None

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