Active electro-optical filter device and glare-protection device

An electro-optical filtering device comprising:

• a light-protection filter with at least one active optical filter element;
• an electronic device for controlling the at least one active filter element;
• a light sensor working together with the electronic device;
• and
• an electrical current supply for the electronic device and the at least one active filter element, wherein the light-protection filter is arranged in a filter component and the electronic device, the light sensor and the electric current supply are arranged in a control component, the filter component and the control component being embodied as physically separate components equipped with mutually cooperating mechanical and electrical connecting elements such that the filter component and the control component can be mechanically and electrically separated from each other, and wherein at least two filter components are provided, which can be releasably mechanically and electrically connected with the control component.

An electro-optical filtering device comprising:

• a light-protection filter with at least one active optical filter element, wherein the light-protection filter is provided with at least one optical compensating element which affects a phase behavior of an electromagnetic field vector in every spatial direction in such a way, that a homogenization of a local and angle-dependent radiation distribution by the light-protection filter is achieved;
• an electronic device for controlling the at least one active filter element;
• a light sensor working together with the electronic device;
• and
• an electrical current supply for the electronic device and the at least one active filter element, wherein the light-protection filter is arranged in a filter component and the electronic device, the light sensor and the electric current supply are arranged in a control component, the filter component and the control component being embodied as physically separate components equipped with mutually cooperating mechanical and electrical connecting elements such that the filter component and the control component can be mechanically and electrically separated from each other, and are releasingly combined with each other via said connecting elements to form the electro-optical filtering device.

A glare-protection device for welding work, said device comprising an active electro-optical filter device located at a distance in front of eyes of a person wearing the glare-protection device, wherein the filtering device further comprises:

• a light-protection filter with at least one active optical filter element;
• an electronic device for controlling the at least one active filter element;
• a light sensor working together with the electronic device;
• and
• an electrical current supply for the electronic device and the at least one active filter element, wherein the light-protection filter is provided with at least one optical compensating element which affects a phase behavior of an electromagnetic field vector in every spatial direction in such a way that a homogenization of a local and angle-dependent radiation distribution by the light-protection filter is achieved and the light-protection sensor has a lateral field of vision size (S) which satisfies the equation S ≅ D - 2 * D * d 400 + d + k * d
• wherein D is an average eye distance of a person wearing the glare-protection device, d is a distance of the light-protection filter from the eye, and k is a field of vision constant ≧1.15.

A glare-protection device for welding work, said device comprising an active electro-optical filter device located at a distance in front of eyes of a person wearing the glare-protection device, wherein the filtering device further comprises:

• a light-protection filter with at least one active optical filter element;
• an electronic device for controlling the at least one active filter element;
• a light sensor working together with the electronic device;
• and
• an electrical current supply for the electronic device and the at least one active filter element, wherein the light-protection filter is provided with at least one optical compensating element which affects a phase behavior of an electromagnetic field vector in every spatial direction in such a way that a homogenization of a local and angle-dependent radiation distribution by the light-protection filter is achieved and the light-protection sensor has a lateral field of vision size (S) which satisfies the equation:
• S≡47.3+60* k,
• wherein k is a field of vision constant ≧1.15.