Fujinon Corporation

Fujifilm Corporation

Fuji Photo Optical Co., Ltd.

Naoki Nishimoto

Atsushi Kawanago

Shuhei Matsushita

One embodiment according to the technology of the present disclosure provides an optical element, an optical device, an imaging apparatus, and a manufacturing method of the optical element, for capturing a multispectral image. An optical element according to an aspect of the present invention includes a plurality of optical filters including two or more optical filters that transmit light beams having at least partially different wavelength ranges, and a frame having an inclined surface portion with an optical axis center as an apex, in which the plurality of optical filters are installed on the inclined surface portion.

Optical element, optical device, imaging apparatus, and manufacturing method of optical element

A lens barrel is provided and includes: a lens barrel main body; and a connecting member attached to the barrel main body and connected to a camera. The connecting member includes an optical filter unit, divided at a position of the optical filter unit and is constituted by a barrel side member and a camera side member.

Lens barrel

A lens feed mechanism is provided and includes: a lens frame that holds a movable lens and that is supported by a fixed lens barrel so as to be capable of moving in a direction in which the movable lens is to move; a feed screw supported rotatably on an axis extending in a moving direction of the lens frame; and a connecting unit that connects the lens frame with the feed screw, the connecting unit having a rack mechanism supported rotatable on an axis extending in a direction on a plane orthogonal to the moving direction of the lens frame, the connecting unit engaging with the feed screw.

Lens feed mechanism

A lens barrel is provided and includes a barrel main body; lens frames supported by the barrel main body so as to be movable in the direction of an optical axis; a focus ring and a zoom ring which are rotatably supported by the barrel main body and move the lens frames in the direction of the optical axis; and a diaphragm device attached to the barrel main body. The focus ring and the zoom ring come into contact with a rotation regulatory section of the diaphragm device, whereby rotation of the focus ring and rotation of the zoom ring are regulated.

In a holding frame of the aperture mechanism is formed a holding portion to which is to be fitted a drive mechanism for opening and closing aperture blades. The holding portion can be fitted with either an electrical drive mechanism, having an iris meter, for electrically opening and closing aperture blades and or a manual drive mechanism for supporting rotatably an iris ring to manually open and close the aperture blades. Thus, an aperture mechanism whose manufacturing cost can be substantially reduced by enabling either or both of an electrical drive mechanism for electrically driving aperture blades and a manual drive mechanism for manually driving them to be fitted to a common holding frame of the aperture mechanism is to be provided.

Growing community of inventors

Saitama, Japan

Naoki Nishimoto