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公开(公告)号：US10663779B1
公开(公告)日：2020-05-26
申请号：US16507431
申请日：2019-07-10
Applicant: ARCMASK OPTECH CO., LTD
Inventor： Chien-Hsing Hsieh , Edward Martin , Chia-Hung Chen , James Watkins
Abstract: A welding helmet includes a helmet shell and a lens device mounted on the helmet shell. The lens device includes a filter control module and a single LCD panel. The logic control module controls the transmittance of the single LCD panel based on a sensed light signal and a shading-level signal designated by a user. Therefore, when the welding helmet is operated in an environment having intense light such as a welding arc, the single LCD panel will turn dark and lower its transmittance to block the intense light.
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