US 12,329,689 B2
Automatic darkening filter with simplified set-up
Christian A. Ripken, Jüchen-Kelzenberg (DE); and Markus Glocker, Neuss (DE)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Oct. 26, 2023, as Appl. No. 18/495,527.
Application 18/495,527 is a continuation of application No. 17/597,571, granted, now 11,813,200, previously published as PCT/IB2020/056225, filed on Jul. 1, 2020.
Claims priority of application No. 19187291 (EP), filed on Jul. 19, 2019.
Prior Publication US 2024/0050278 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/133 (2006.01); A61F 9/06 (2006.01)
CPC A61F 9/062 (2013.01) [G02F 1/13318 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An automatic darkening filter, comprising:
a switchable filter lens comprising at least one switchable shutter switchable between a first state and a second state;
a filter controller connected to the switchable filter lens to control switching of the switchable filter lens according to a predetermined profile, wherein the filter controller is connected to at least one of the switchable shutters such that the filter controller can: (i) send control signals to the at least one switchable shutter to assume any desired state; and (ii) receive confirmation signals from the at least one switchable shutter regarding the state of the shutter; and
a filter communication unit connected to the filter controller and configured to: (i) receive information from a set-up device of a welding device about the predetermined profile; and (ii) send information to the set-up device regarding the state of the at least one switchable shutter;
wherein the filter is configured to be switched according to the predetermined profile with parameters of the filter.