A skull mounting system for headgear, preferably for a respirator hood, is described. The skull mounting system comprises a headband with a front head strap, which extends around the front of the head of a wearer, and a rear head strap, which is found on the back of the head of the wearer. The rear head strap is connected to the front head strap by means of two swivel joints. The swivel joints are at least partially freely rotatable in a corresponding adjustment position and are not rotatable in a corresponding locked position.

A skull mounting system for headgear, preferably for a respirator hood, is described. The skull mounting system comprises a headband with a front head strap, which extends around the front of the head of a wearer, and a rear head strap, which is found on the back of the head of the wearer. The rear head strap is connected to the front head strap by means of two swivel joints. The swivel joints are at least partially freely rotatable in a corresponding adjustment position and are not rotatable in a corresponding locked position.

A ventilation unit and controller device comprises a ventilation unit with a housing. The housing has an intake port permitting flow of gas into the housing and an exhaust port permitting flow of gas out of the housing. Within the housing, a motorized fan is positioned to direct gas into the housing via the intake port and out of the housing via the exhaust port. A controller capable of controlling the ventilation unit communicates with a sensor capable of detecting an environmental stimulus and responding thereto. A source of electric current provides power to the ventilation unit and controller device. The device is capable of being removably attached via fasteners to an arc flash hood, and the arc flash hood comprises a ventilation opening to permit gas discharged by the device to enter the arc flash hood.

The present invention discloses a helmet with an inwards flipping type goggle, which includes a helmet body, a goggle, a front protection lens and a link mechanism; the front protection lens is fixed to the front side of the helmet body, the goggle is fixed to the link mechanism, the link mechanism is capable of adjusting the goggle to move up and down and to be rotatably connected to the two sides of the helmet body, and the goggle are located in the helmet body. The present invention has the following beneficial effects: by adopting the inwards flipping type, the goggle are prevented from being easily contaminated by welding splash, grinding splash and dust when the goggle are upwards flipped outside; the defects that the gravity center of the entire helmet moves forwards and the helmet is heavy are avoided; the goggle can be upwards flipped inside the helmet, the sight is not affected under the situation that the helmet is not taken off, and it is applicable to wider occasions, is more flexible and is more convenient to operate.

The present invention discloses a helmet with an inwards flipping type goggle, which includes a helmet body, a goggle, a front protection lens and a link mechanism; the front protection lens is fixed to the front side of the helmet body, the goggle is fixed to the link mechanism, the link mechanism is capable of adjusting the goggle to move up and down and to be rotatably connected to the two sides of the helmet body, and the goggle are located in the helmet body. The present invention has the following beneficial effects: by adopting the inwards flipping type, the goggle are prevented from being easily contaminated by welding splash, grinding splash and dust when the goggle are upwards flipped outside; the defects that the gravity center of the entire helmet moves forwards and the helmet is heavy are avoided; the goggle can be upwards flipped inside the helmet, the sight is not affected under the situation that the helmet is not taken off, and it is applicable to wider occasions, is more flexible and is more convenient to operate.

The invention relates to a refractive surface for blocking short- and medium-wavelength visible-spectrum radiation that affects human physiology. The refractive surface selectively absorbs short wavelengths between 380 nm and 500 nm, between a maximum and a minimum absorption threshold, and selectively absorbs medium wavelengths between 500 nm and 590 nm, between a maximum and a minimum absorption threshold, the selective absorption of short and medium wavelengths between 380 nm and 590 nm not completely blocking the passage of visible light in this range. Other embodiments include an LED screen, a software product and an electronic device, and ophthalmic, intraocular or sunglass lenses.

The present application provides a headband arrangement for a welding helmet, comprising: a fixed attachment structure; and a helmet mounting structure cooperating with the attachment structure, wherein at least two stopping positions are defined longitudinally between the attachment structure and the helmet mounting structure, the helmet mounting structure is selectively switchable between an unlocking state and a locking state, wherein in the unlocking state, the helmet mounting structure is slidable between the stopping positions relative to the attachment structure, and wherein in the locking state, the helmet mounting structure can be locked to one of the stopping positions relative to the attachment structure and can be kept there by a magnetic force generated between a pair of magnetic parts.

An ocular shield for facilitating generation of Visual Evoked Potentials (VEP) is disclosed. The ocular shield may include a body configured to be disposed over an ocular globe of an eye. Further, the body may include an interior surface and an exterior surface. Further, the ocular shield may include at least one light source configured to generate at least one light emission. Further, the at least one light source may be coupled to the body to facilitate transmission of the at least light emission from the interior surface of the body. Further, the ocular shield may include a power source, electrically coupled to the at least one light source, configured to provide electrical energy to the at least one light source. Further, the ocular shield may include a controller configured to control the power source. Further, the controller may be electrically coupled to the power source.

An ocular shield for facilitating generation of Visual Evoked Potentials (VEP) is disclosed. The ocular shield may include a body configured to be disposed over an ocular globe of an eye. Further, the body may include an interior surface and an exterior surface. Further, the ocular shield may include at least one light source configured to generate at least one light emission. Further, the at least one light source may be coupled to the body to facilitate transmission of the at least light emission from the interior surface of the body. Further, the ocular shield may include a power source, electrically coupled to the at least one light source, configured to provide electrical energy to the at least one light source. Further, the ocular shield may include a controller configured to control the power source. Further, the controller may be electrically coupled to the power source.

The present disclosure relates to a fog-reducing apparatus for eye protection equipment. For example, the fog-reducing apparatus includes a filter-pump system that provides air through one or more flexible hoses and across a lens of eye protection equipment. In certain implementations, the fog-reducing apparatus includes one or more nozzles (e.g., interchangeable nozzles) that provide directional air flow across the lens. Depending on the nozzle and/or an air flow controller, the fog-reducing apparatus can provide variable amounts of air flow and adjustable air flow direction as may be desired. In addition, the nozzle can attach to one or more components of the eye protection equipment, such as a lens, shield, or hood via one or more attachment mechanisms. Further, the nozzle can be inserted through an air vent or other hole into the eye protection equipment.