Head worn devices having a variable shade component and fixed shade component, and methods of operation
AssigneeIllinois Tool Works Inc.
InventorsNishank R. Patel, Eric Sommers
Life of this patent
Estimating the term…
Abstract
Head worn devices having a variable shade component and a fixed shade component, and methods of operation, are disclosed. An example head worn device includes an auto-darkening lens configured to adjust a shade value within a first shade value range, a second lens having a fixed shade value greater than 0, the auto-darkening lens and the second lens overlapping in a field of view of the head worn device to result in a net shade value range in the field of view that is greater than the first shade value range, and a clear lens on an exterior of the auto-darkening lens and the second lens.
Claims22
A head worn device, comprising:
- an auto-darkening lens configured to adjust a shade value within a first shade value range;
- a second lens having a fixed shade value greater than 0, the auto-darkening lens and the second lens overlapping in a field of view of the head worn device to result in a net shade value range in the field of view that is greater than the first shade value range;
- and
- a clear lens on an exterior of the auto-darkening lens and the second lens.
A method, comprising:
- installing an auto-darkening lens in a head worn device, the auto-darkening lens configured to change a first shade value within a first shade value range;
- installing a clear lens on an exterior of the auto-darkening lens and a first fixed shade lens having a shade value greater than 0 within a field of view of the head worn device;
- and
- operating the head worn device using a second shade value range based on the first shade value range and the first fixed shade lens on the head worn device.
Dependencies are inferred from the claim text.