# US 11,439,538 B2 · Protector for welder

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- Number: US 11,439,538 B2
- Document ID: US11439538B2
- Status: Granted
- Kind: B2
- Application number: 16/128,149
- Filed: 2018-09-11
- Published: 2019-03-14
- Granted: 2022-09-13
- Earliest claimed: 2017-09-12
- Assignees: Otos Wing.Co., Ltd.
- Applicants: Otos Wing.Co., Ltd.
- Inventors: Moon Young Huh
- Web page: https://patentgrep.com/patent/US11439538B2

## CPC

- A61F 9/067: {with variable transmission}
- G02B 27/0172: {characterised by optical features}
- B23K 9/322: {Head protecting means}
- G02B 2027/0141: {characterised by the informative content of the display}
- G02B 2027/0156: {with optionally usable elements}
- G02B 2027/0159: {with mechanical means other than scaning means for positioning the whole image}
- G02B 2027/0167: {Emergency system, e.g. to prevent injuries}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM

## Abstract

A protector for a welder includes a main body configured to cover a face and eyes of an operator; a darkening filter arranged in a front side of the main body and configured to protect the eyes of the operator; an image generator arranged in the main body and configured to generate image light; an optical path bender configured to change a proceeding path of the image light; and a combiner configured to generate a virtual image on an outer portion of the main body by projecting the image light, and arranged adjacent to the darkening filter.

## Claims

### Claim 1

A protector for a welder, the protector comprising:
a main body configured to cover a face and eyes of an operator;
a darkening filter arranged in a front side of the main body and configured to protect the eyes of the operator;
an image generator arranged in the main body and configured to generate image light;
an optical path bender configured to change a proceeding path of the image light; and
a combiner configured to generate a virtual image on an outer portion of the main body by projecting the image light, and arranged adjacent to the darkening filter; and
a combiner mover configured to move the combiner, so that the combiner is located in the main body without overlapping with the darkening filter in a first mode and the combiner overlaps with at least a part of the darkening filter in a second mode.

### Claim 2 (depends on 1)

The protector of claim 1, wherein the optical path bender comprises at least one of a reflective mirror, a semi-transmissive mirror, and optical fiber.

### Claim 3 (depends on 1)

The protector of claim 1, wherein the virtual image represents information based on at least one of information about electric power used during a welding operation or information about a welding wire.

### Claim 4 (depends on 1)

The protector of claim 1, further comprising a controller configured to control a location of the virtual image.

### Claim 5 (depends on 4)

The protector of claim 4, wherein the controller is configured to control the location of the virtual image by changing a location of at least one of the image generator or the optical path bender.

### Claim 6 (depends on 5)

The protector of claim 5, further comprising a mover configured to move the location of at least one of the image generator or the optical path bender.

### Claim 7 (depends on 4)

The protector of claim 4, wherein the controller is configured to control the location of the virtual image based on a size of an image generated by the image generator.

### Claim 8 (depends on 1)

The protector of claim 1, wherein the virtual image has a brightness that is based on a darkness of the darkening filter or a brightness inside the main body.

### Claim 9 (depends on 8)

The protector of claim 8, further comprising an optical sensor arranged in the main body.