The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2023
Filed:
Nov. 26, 2019
Fujikura Ltd., Tokyo, JP;
Seikoh Giken Co., Ltd., Matsudo, JP;
Takao Sato, Sakura, JP;
Hideo Shiratani, Sakura, JP;
Kengo Takamizawa, Sakura, JP;
Ryosuke Niwaki, Matsudo, JP;
Tomomi Hirao, Matsudo, JP;
Abstract
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