Fujifilm Corporation

Kochi University

Nirec Corporation

Shigehiro Kanayama

Minoru Tanaka

Takayuki Sato

Arihiro Saita

Haruyasu Katahira

Tetsuo Sumida

An endoscope includes a scope and an image capturing unit accommodated inside the scope. The image capturing unit includes: first and second prisms; a reflection film provided between oblique faces of the first and second prisms; a first trimming filter on which visible light transmitted through the first prism is incident on the first trimming filter via the reflection film; a first image sensor facing the first trimming filter; a second trimming filter on which near-infrared light transmitted through the second prism being incident on the second trimming filter via the reflection film; and a second image sensor facing the second trimming filter. The first prism is fixed to the second prism, the first trimming filter is fixed to the first prism, and the second trimming filter is fixed to the second prism.

Endoscope and image capturing unit provided therein

A lens device is used with an imaging device having a imaging-lens and an aperture stop device. The lens device includes a lens barrel that houses the imaging-lens and the aperture stop device, a first operation ring that is on an outer circumferential portion of the lens barrel and that is rotatable in a circumferential direction of the outer circumferential portion about an axis line of the lens barrel in order to adjust the aperture-area of the aperture stop device, and a second operation ring that is parallel with the first operation ring and is rotatable in the circumferential direction of the outer circumferential portion about the axis line of the lens barrel in order to adjust a transmittance of a variable light transmission filter.

Lens device and imaging device mounted with the lens device

A lens device () is provided with a first operating ring () for adjusting the opening surface area of an aperture device () and a second operating ring () for adjusting the transmittance of a variable light transmittance filter (). The correspondence relation between the operational amount for the first operating ring and the rate of change in the amount of light transmitted by the aperture device and correspondence relation between the operational amount for the second operating ring and the rate of change in the amount of light transmitted by the variable light transmittance filter are the same.

Lens device and image capturing apparatus having the same

Growing community of inventors

Saitama, Japan

Shigehiro Kanayama