Abstract
The present disclosure relates to an automatic darkening filter 20 which is suitable for darkening for protection from light, in particular from high intensity light, with a simplified set-up, as well as to a set-up device 40 for setting up parameters of a such filter 20. The present disclosure also relates to a system 100, 100′ comprising such an automatic darkening filter 20 and such a set-up device 40, in particular a welding device 110. The present disclosure furthermore relates to a method for setting up such an automatic darkening filter 20 as well as to a headgear 10 with such an automatic darkening filter 20 and to a welding device 110 with such a set-up device 40.
Claims
1. An automatic darkening filter, comprising: a switchable filter lens comprising at least one switchable shutter which can be switched between at least a light state and a dark state, wherein the filter is configured to be switched according to a predetermined profile; a filter controller that is connected to each of the at least one switchable shutters so as to be able to control switching of each of the shutters, wherein the filter controller is configured to associate the predetermined profile with parameters of the filter and to simultaneously adjust at least two of the parameters of the filter; and a filter communication unit that is connected to the filter controller and that is configured to be connected to a set-up device for receiving information about the predetermined profile from the set-up device.
2. The automatic darkening filter according to claim 1, wherein the filter communication unit comprises a wireless receiver and a wireless transmitter.
3. The automatic darkening filter according to claim 1, wherein the predetermined profile comprises at least one parameter of the filter, the parameter including at least one of shade, sensitivity and delay.
4. The automatic darkening filter according to claim 1, wherein the filter communication unit is further configured to transmit information about the filter to the set-up device.
5. A set-up device for setting up parameters of an automatic darkening filter according to claim 1, comprising a set-up communication unit that is configured to be connected to the filter for transmitting a predetermined profile to the filter.
6. The set-up device according to claim 5, wherein the predetermined profile comprises a parameter of the filter including at least one of shade, sensitivity and delay.
7. The set-up device according to claim 5, wherein the set-up device communication unit is further configured to receive from the filter information about the filter.
8. The set-up device according to claim 5, wherein the set-up device communication unit further comprises a wireless transmitter and optionally a wireless receiver.
9. The set-up device according to claim 5, further comprising a fastening means for attachment to a welding device, wherein the fastening means comprises a mechanical fastener, adhesive, screws or combinations thereof.
10. The set-up device according to claim 5, wherein the set-up device is configured to be connected to or part of a welding device such that the set-up device receives information on the welding conditions from the welding device.
11. A system comprising an automatic darkening filter and a set-up device according to claim 5, wherein the information from or to the set-up device is transmitted wirelessly.
12. A method for setting up an automatic darkening filter, the method comprising: providing an automatic darkening filter and a set-up device according to claim 5; establishing a wireless communication between the automatic darkening filter and the set-up device; transferring a predetermined profile comprising a parameter including at least one of shade, sensitivity, and delay for setting up of the filter from the set-up device to the filter; and setting up the parameters of the switchable filter lens of the filter based on the profile information received from the set-up device.
13. The method according to claim 12, wherein the set-up device is part of the welding device, the method further comprising transmitting information relevant for setting up the filter from the welding device to the set-up device.
14. A protective headgear comprising an automatic darkening filter according to claim 1.
15. A welding device comprising a set-up device according to claim 1.
Description
DETAILED DESCRIPTION
(1) The invention will now be described in more detail with reference to the following Figures exemplifying particular embodiments of the invention:
(2) FIG. 1 is a perspective view of a protective headgear, e.g. a welding helmet, that includes an automatic darkening filter (ADF) according to the present disclosure;
(3) FIG. 2 is a schematic block diagram of an ADF system in which an ADF and a set-up device according to the present disclosure are connected;
(4) FIG. 3 is a schematic side view of a protective headgear with an automatic darkening filter according to the present disclosure and a welding device comprising a set-up device according to the present disclosure.
(5) FIG. 1 shows an example of a headgear 10 according to the present disclosure, e.g. a welding helmet 10 that includes a helmet body or shell 12 and an automatic darkening filter (ADF) 20. Specifically, the ADF 20 includes a switchable filter lens 22 supported in the helmet shell 12. The switchable filter lens 22 comprises a plurality of switchable shutters 22a, which are not shown in FIG. 1. The switchable filter lens 22 may be mounted in the helmet shell 12 so that it is directly in front of the user's eyes when the helmet is worn by a user. In one embodiment, the switchable filter lens may be replaceable. In the embodiment shown in FIG. 1, the switchable filter lens 22 of the ADF 20 has a substantially rectangular shape. The switchable filter lens 22 may further have a frame or housing, which is not shown in FIG. 1.
(6) FIG. 2 is a schematic block diagram of an automatic darkening filter system 100 including an automatic darkening filter 20 and a set-up device 40 according to the present disclosure. As described above, the ADF 20 comprises a switchable filter lens 22 having a plurality of switchable shutters 22a only one of which is shown in FIG. 2. The switchable filter lens 22 is capable of changing from a light state to a dark state by switching some or each of the switchable shutters 22a from a light state to a dark state, possibly also to at least one intermediate state. The switchable filter lens 22 is electrically connected to a filter controller 24 via connection 26. As outlined above, the filter controller 24 is connected to each of the switchable shutters 22a and is configured to switch the switchable filter lens 22 and the switchable shutters 22a, respectively. The filter controller 24 switches according to a predetermined profile which includes parameters of the ADF, for example shade (dark status), sensitivity and/or delay etc. As describe above, the filter controller 24 may switch two or more, preferably all of the parameters simultaneously. The filter controller 24 is also electrically connected to a filter communication unit 30 via a connection 28. The filter communication unit 30 receives information relevant for switching the switchable shutter 22 of the ADF 20 and transmits this information to the filter controller 24 via connection 28. As can be seen from FIG. 2, the ADF 20 is wirelessly connected to a set-up device 40 as indicated by 32. Such a connection may also be wired, which is not shown in FIG. 2. Other connections, e.g. optical connections including for example a scanner reading a QR code or bar code, light signals etc., are conceivable. The set-up device 40 comprises a set-up device controller 44 which is electrically connected to a set-up communication unit 42 via connection 52. The set-up device controller 44 provides data relevant for switching the ADF 20 to the set-up device communication unit 42, which transmits the received data to the filter communication unit 30, for example wirelessly as indicated by 32 in FIG. 2. Such data either comes from an input device 46 operated by a user of the set-up device 40, wherein the input device 46 is connected to the set-up device controller 44 by connection 54. The input device 46 may for example be a keyboard or a scanner for scanning bar codes or QR codes as input. The data may also come from another device, e.g. a welding device (not shown here), which can be electrically connected to a connection interface 50 via connection 60. The connection interface 50 is in turn electrically connected to the set-up device 40 by connection 58. The set-up controller 44 is also electrically connected to a display 48 via connection 56 for displaying data about the ADF 20 and the set-up device 40, e.g. conditions of the ADF 20 such as the state to which the switchable filter lens is switched, such as parameters of the above-mentioned profile etc. The set-up device 40 and the set-up controller 44, respectively, may also receive information from the filter 20, e.g. a confirmation message that the filter 20 has reached a certain state (dark, light, intermediate). The set-up device 40 may comprise a housing (not shown here) or may be part of another device such as a welding device (not shown here).
(7) FIG. 3 is a schematic side view of an automatic darkening filter system 100′ including a protective headgear 10 with an ADF 20 and a welding device 110 comprising a set-up device 40 as part thereof. The welding device 110 may be a welding device 110 for manual metal arc welding (MMA), gas tungsten arc welding (TIG), metal inert gas/metal active gas welding (MIG/MAG) type, plasma welding or with electrodes with or without protective gas. The welding device 110 further comprises a set-up device 40 as described under FIG. 2 above, which is attached to the welding device, preferably such that it forms part thereof. The set-up device 40 is connected to the welding device 110 such that the set-up device 40 receives data from the welding device 110 about the welding conditions. Depending on these welding conditions, the ADF 20 needs to be and will be switched accordingly. The set-up device 40 is wirelessly connected to the protective headgear 10 comprising the ADF 20 as indicated by 32. Other connections, e.g. wired connections, are also conceivable. As described under FIG. 1, the headgear 10 comprises a helmet shell 12, an ADF 20 including a switchable filter lens 22. The switchable filter lens 22 comprises a plurality of switchable shutters 22a, which are omitted here for simplification. The welding device 110 further comprises a welding torch 112 which comprises a push button for operating the welding device 110 including starting or stopping the welding process. A grip intended to allow the operator to handle the welding torch 112 may be provided with the welding torch 112, which is not shown here.
