Fujikura Limited

Seikoh Giken Co., Ltd.

Kengo Takamizawa

Hideo Shiratani

Takao Sato

Katsuyoshi Endoh

Tomomi Hirao

Ryosuke Niwaki

The present invention provides a lens unit having a cover member which does not cause deviation in precision and capable of being manufactured efficiently at low cost. In a lens unitA, side surfaces of a cover membercontinuing from a front end surfaceto a rear end surface located at a lens side are formed in a regular quadrangular prism, at least two of corners of the regular quadrangular prism are in contact with an inner peripheral surfaceof a housing spaceof a holderfor housing the cover member, a gapis formed between each of the side surfaces of the cover memberand the inner peripheral surfaceof the holder, and an effective area of a light beam is located inside a light receiving area having a regular quadrangular shape surrounded by an outer peripheral edge of the front end surfaceof the cover member

Lens unit

Imaging apparatus for an endoscope

Growing community of inventors

Sakura, Japan

Kengo Takamizawa