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:
Jan. 03, 2017
Filed:
Mar. 25, 2013
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Naoki Suda, Tokyo, JP;
Tomoaki Wakayama, Tokyo, JP;
Motohiro Itotani, Tokyo, JP;
Hiroshi Yatabe, Hiroshima, JP;
Shin-ichi Imayoshi, Hiroshima, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A welding camera () is constructed with: a lens () for focusing incident light; an optical filter () that comprises a neutral density filter for reducing the amount of the incident light, an ultraviolet cut filter for cutting ultraviolet rays, and a green band-pass filter for transmitting green light; a CMOS imaging unit () that has a wide dynamic range function, and detects the light which has passed the optical filter (); a video signal processing unit () that has an automatic gain control function and a digital signal processor, and outputs an image signal, which covers a range of a low-intensity dark part to high-intensity arc light, to a display unit on the basis of an electric signal that is input from the CMOS imaging unit ().