Abstract: A camera system includes a motorcycle helmet having an energy-absorbing inner liner, an outer shell surrounding at least a portion of the energy-absorbing inner liner, and a number of pockets in the motorcycle helmet. Each pocket includes an opening in the outer shell and a recess in the energy-absorbing liner. The camera system also includes a number of cameras in the pockets in the motorcycle helmet, and each camera includes a lens, an image sensor, and a processor. The camera system also includes a number of lens covers covering the cameras, and each lens cover is conformal with a portion of the outer shell proximate to the lens cover such that the cameras and the lens covers do not appreciably increase the aerodynamic drag of the motorcycle helmet.

Abstract: A diving helmet apparatus includes a diving helmet that is based on a 98th percentile anthropomorphic head form. The helmet is relatively smaller and lighter than convention diving helmets. The center-of-gravity and center-of-buoyancy of the helmet are co-located to reduce diver fatigue. The apparatus has unique neck dam latch devices that use cam mechanisms. The neck dam and the opening in the helmet that receives the diver's head both have a substantially oval shape that contributes to a significant reduction in the volume of the helmet. The apparatus also uses unique face mask latch devices. The neck dam and face mask latch devices allow a diver to easily secure and remove the helmet and face mask without the assistance of dive tenders.

Abstract: A transparent face protector assembly having a transparent protective mask covering the lower half or lower three quarters of the face, two arms that feature two axis adjustment, a swivel, pivot or hinge and one or more clips to adjust or temporarily adjust the position of the face protector or to open and close the face protector from either the left or the right side, and interchangeable mount devices that attach to the end of the arms to enable secure fitment to helmet ancillary attachment rails and systems. The face protector is attached with interchangeable mount devices that attach to the end of the arms to enable secure fitment to helmet ancillary attachment rails using ARC® or Picatinny® rail systems.

Abstract: A head top has a frame for mounting on a user's head. The frame has a viewing opening for a user to see out of the frame. A shield is mounted to the frame, and can be moved between a open and closed positions. A pivot arm connects the shield to the frame and is mounted to the inside of both the frame and shield to avoid exposure. An outer mount and inner mount can also be provided to automatically adjust the width of the head top. A hinge connects them allowing the inner mount to laterally pivot with respect to the outer mount to accommodate users with different head sizes. A forehead member also adjusts to a user's forehead.

Abstract: A helmet is disclosed including: a helmet body; a jaw guard with two fork handles through which the jaw guard is mounted on the helmet body and rotatable around a fixed axis relative to the helmet body; a shield assembly including a shield and a bracket, which is movable between a lowered position and a raised position relative to the helmet body; and a lifting mechanism including a trigger located beside the bracket of the shield assembly and driven by the fork handles of the jaw guard, and the trigger can touch the bracket of the shield assembly at the lowered position and raise the shield assembly from the lowered position. The lifting mechanism further includes an elastic element with one end connected with the bracket, which is arranged to make the shield assembly continue to move to the raised position after the shield assembly leaves the lowered position.

Abstract: A helmet assembly having a helmet, a mandible guard, and an accessory attachment system that is used to selectively attach and secure the mandible guard to the helmet is disclosed. In some embodiments, the mandible guard is arranged to be detached from a first side of the helmet while remaining secured to a second side of the helmet. In such embodiments, the mandible guard may be moved outwardly and away from a wearer as the mandible guard pivots around the accessory attachment system attached to the second side of the helmet.

Abstract: A wearable physical shield is disclosed. The shield includes a visor; a flexible extension coupled to the visor, and a collar coupled to the flexible extension. The visor can include a visor cavity, and the flexible extension can include a flexible extension cavity, wherein a seal is located between the visor cavity and the flexible extension cavity, such that the seal at least partially restricts movement of air between the visor cavity and the flexible extension cavity. The collar is configured to be placed around a neck of a person with a single hand for moving the collar from an open position to a closed position, where first and second arms of the collar are closed around the neck of the person.

Abstract: A helmet with an inner liner and an outer liner that slidably move in relation to each other. At least one flexible connector is positioned at the ovoid surface between the inner and outer liner that directly connects at least three of a plurality of liner ribs of the first liner segment to the second liner segment across a gap at a center portion of a second liner segment and at left and right sides of the second liner segment. The at least one flexible connector is in-molded with the first and second liner segments so that they move relative to each other when the inner liner slidably moves in relation to the outer liner by flexing the at least one flexible connector. Elastomeric anchors coupled to the outer liner and to the at least one flexible connector may be included, and a fit system may be used.

Abstract: The present disclosure provides a head-mounted welding mask, which includes a mask shell, a head-mounted mechanism, and a flip device, the flip device includes a knob which is connected to the mask shell, a link mechanism which is connected to the knob, and a base which is connected to the head-mounted mechanism, the link mechanism is disposed on the base, when the knob is moved, the knob drives the link mechanism to reciprocate in an arc, so that the mask shell flips relative to the head-mounted mechanism, and the barycenter of the mask shell moves into a predetermined range that is determined based on the gravity line where the barycenter of the head-mounted mechanism is located. The flip device changes the position of the barycenter of the mask shell through the movement of the link mechanism, so that the barycenter of the mask shell moves into a predetermined range that is determined based on the gravity line where the barycenter of the head-mounted mechanism is located.

Abstract: A closed face motorcycle helmet includes a shell with an eyeport and a shield attached for hinged or pivoted motion between a closed or lowered position covering and sealing the eyeport and an open position or raised position displaced above the eyeport. A hinge plate is attached to the shell on each side and includes a moving pivot socket into which a hub of the shield is rotatably disposed for hinged movement and rearward movement of the shield between the raised and lowered positions.

Abstract: A magnetic mechanical latching attachment for connecting goggles to a helmet includes a goggle attachment portion configured to mechanically and magnetically attach to a helmet attachment portion. The goggle attachment portion and helmet attachment portion include complimentary interlocking features that mechanically lock the portions together when attached and magnetic features that assist engagement of the complimentary interlocking features in a locked position. A related method of coupling goggles to a helmet, as well as a helmet-goggle attachment system, is provided.

Abstract: A protective helmet, particularly a motorbike protective helmet, comprising an outer shell (1) for the distribution of impact forces, the outer shell (1) comprising a chin shell region (2) for covering a chin part of the person wearing the protective helmet, wherein the outer shell (1) comprises a viewing opening (3) arranged above the chin shell region (2), for the person wearing the protective helmet to see through, and the protective helmet has a slot (4a) with a slot shape for interlockingly receiving an electronic module (5a) corresponding to the slot shape, said slot (4a) comprising a slot opening substantially bordering an edge of the viewing opening (3). The protective helmet comprises another slot (4b) having another slot opening substantially bordering the edge of the viewing opening (3) and having the slot shape for interlockingly receiving another electronic module (5b) corresponding to the slot shape.

Abstract: Arrangements described herein relate to systems, apparatuses, and methods for a disposable kit containing medical items configured for a medical device including a head cradle to support a head of a subject, the disposable kit includes a container that encloses a head cradle pad configured to be affixed to the head cradle, at least one fiducial marker configured to be disposed on a location at the head of the subject, and at least one enclosure configured to cover a portion of the medical device.

Abstract: A snore blocking helmet for comfortably minimizing snore impact on others includes a helmet body having a front portion, a rear portion, a right portion, a left portion, a top portion and a bottom perimeter forming an inside. The front portion has a visor aperture and a plurality of vent apertures extending through to the inside. A visor is rotatably coupled to the helmet body to cover and alternatively uncover the visor aperture. A plurality of fans is coupled within the inside adjacent the plurality of vent apertures. A control housing is coupled through the front portion. A plurality of controls is coupled to the control housing and is in operational communication with the plurality of fans. A power source is coupled to the control housing and is in operational communication each of the plurality of controls and the plurality of fans.

Abstract: A batting helmet system includes sockets facing the interior region of the helmet shell to receive clip elements for holding a chin strap or to receive plate elements for supporting a face protector. A clip element includes a base portion, a hook portion extending from the base portion, and a projection positioned on an end of the hook portion and extending toward the base portion. The base portion may include a strap retainer. When the clip element is installed, the clip element extends from the interior of the helmet to the exterior of the helmet through an opening in the helmet shell, so that the strap retainer is positioned outside the helmet shell. A face protector may include plate elements for positioning in one or more of the sockets. Plate elements and sockets may have corresponding geometries that limit rotation of the face protector relative to the helmet shell.

Abstract: A chin strap includes a protective shell including a curved and convex contour extending between lengthwise ends of the shell, the shell further including a first curved edge extending between the lengthwise ends of the shell and a second curved edge extending between the lengthwise ends of the shell. A cross-section along a lengthwise central axis of the chin strap defines a first shell portion including the first curved edge and a second shell portion including the second curved edge. The first shell portion of the cross-section defines a first surface area between the lengthwise central axis and the first curved edge, and the second shell portion of the cross-section defines a second surface area between the lengthwise central axis and the second curved edge, where the first surface area is less than the second surface area.

Abstract: A helmet can include a helmet body and a shield. The helmet body can include a front portion and a tail portion, and the shield can include two ear portions connected by a brow portion. The shield can be releasably coupled to the helmet body. The ears of a helmet user can be exposed with respect to the helmet body and covered with respect to the shield. The brow portion of the shield can extend across the front portion of the helmet. The tail portion of the helmet can be tapered and the front portion of the helmet can have a rounded leading edge, such that the helmet body has a tear drop form factor.

Abstract: A surgical garment for use with a helmet, wherein the garment comprises a shell, a transparent face shield, and an attachment element coupled to the transparent face shield. The garment may be configured to define a barrier between the wearer and the environment. The attachment element configured to removably couple with a coupling member of the helmet, wherein the attachment element and coupling member comprise complementary coupling surfaces. The attachment element comprises a head having a distal surface and a proximal surface, and defining a coupling recess, the coupling recess is defined in the proximal surface of the head. The garment may comprise a first and second attachment element, with the first attachment element being coupled to upper portion of the transparent face shield and the second attachment element being coupled to lower portion of the transparent face shield.

Abstract: Provided is a head protection device with multiple face shields, where the head protection device is configured to be able to provide a flow of air to a user of the head protection device. The air flow may be provided by an external air providing device.

Abstract: A helmet that can effectively reduce the rotational acceleration of an impact and at the same time also effectively reduce translational acceleration is provided. A helmet has an outer shell including a hard material and a shock absorbing liner (14) disposed inside the shell. The shock absorbing liner (14) includes a main body liner (16), a recessed portion (30) provided at an inner surface of the main body liner (16), an insert liner (18) fitted into the recessed portion (30), and a central raised portion (42) (central support member) disposed between a bottom surface of the recessed portion (30) and a bottom surface of the insert liner (18). When the helmet receives an impact, the insert liner (18) swings about the central support member as a fulcrum, thereby reducing the impact.

Abstract: A protective helmet has a jet helmet part and a chin part which are releasably connected to each other by a coupling part. The chin part and the jet helmet part can be swiveled relative to each other by a swiveling mechanism between an integral helmet position and a jet helmet position. The coupling part includes a coupling element on the chin part and a second coupling element on the jet helmet part, which coupling elements engage to form a mutually releasable form-fit coupling. The swiveling mechanism actuates a locking mechanism where the locking mechanism includes a blocking slider and is designed such that, in the integral helmet position, the blocking slider blocks the first coupling element such that a decoupling of the coupling elements is prevented, and in the jet helmet position, the blocking of the first coupling element is released thereby enabling the coupling elements to be decoupled.

Abstract: Visor for a protective helmet, having two retaining arms and two bearing devices for the retaining arms which are attached to a helmet shell of a helmet in order to pivot the visor between two end positions corresponding to an operational position and a parked position in which the visor is folded up and is disposed on the outer surface of the helmet shell. The visor is provided with a soft lip, preferably made from TPU or TPE, at the location where it comes into contact with the helmet shell in the end positions. When the visor is manually activated to pivot out of an end position, the visor is accelerated by resilient pretensioning in the direction of the other end position until the lip is in contact with the helmet shell substantially without recoil. The lip damps the movement momentum of the visor and additionally has a sealing function.

Abstract: An improved design for a helmet to reduce injuries caused by helmet-to-helmet collisions. Certain embodiments include novel quick release features that permit the detachment of a facemask from a helmet in 30 seconds or less so as to attend to an injured player in a rapid fashion. Other aspects relate to impact energy absorbing constructions employing an inner layer, an outer layer spaced apart from the inner padding layer, at least one layer that includes an array of polygonal structures, and at least one layer having a shock-absorbing elastomer, a visco-elastic polymer, an impact dispersing gel, or shape memory material. Still other embodiments include a wireless device with a sensor module coupled to the football helmet generating sensor data in response to an impact to the football helmet.

Abstract: A hinge including: a first leaf assembly accommodating a portion of a first panel having a first cut-out section, the first leaf assembly including a first insert component which is tight fittingly receivable within the first cut-out section; a second leaf assembly, hingedly coupled to the first leaf assembly, for accommodating a portion of a second panel having a second cut-out section; one or more biasing components to bias the hinge toward a closed position; and a dampener to slow movement of the first and second leaf assemblies to the closed position, a first portion of the dampener is located within the first insert component and a second portion is configured to at least partially retract within the first insert component when coming into contact with the second leaf assembly during movement, a second portion of the dampener extends and retracts along an axis coplanar with the first panel.

Abstract: A sports face guard for a sports headgear includes a plurality of interconnected wires, wherein a wire of the plurality of interconnected wires has a cross section has a wedge surface with a first longest dimension, the first longest dimension of the wedge surface being in a direction of a major axis of the wire; a base surface with a second longest dimension, the second longest dimension of base surface being in a direction that is perpendicular to the major axis of the wire, the second longest dimension being less than the first longest dimension; wherein the first longest dimension of the wedge surface is longer than the second longest dimension of the second base surface; and wherein the second base surface of the wire comprises a substantially flat or concave surface portion.

Abstract: Various embodiments of an accessory mounting device are disclosed. The device can be adapted to engage an elongated rail. The device can include a body having top, bottom, and first and second side surfaces. Each of the side surfaces can include a rail engagement portion adjacent the bottom surface of the body and an accessory engagement portion adjacent the top surface. The device can also include a locking mechanism including a lever connected to the body at a pivot, and a tab extending from the lever in a direction away from the bottom surface. In one or more embodiments, the locking mechanism can include first and second levers each connected to the body at a pivot. The lever can rotate about a pivot axis in a direction toward the top surface of the body when the locking mechanism is manipulated from a locked position to an unlocked position.

Abstract: A protective helmet adapted to receive and protect a head of a wearer comprises: an outer shell shaped to protect the head of the wearer, with the outer shell defining a bottom opening and an internal cavity for receiving the head of the wearer; a headband and a suspension positioned within the internal cavity of the outer shell; and a visor rotatable between a retracted position within the outer shell to an extended position in front of a face of the wearer, wherein the visor simultaneously rotates about a first pivot axis and a second pivot axis as it moves between the retracted position and the extended position. The visor can also be readily removed from the protective helmet and easily replaced should it become damaged.

Abstract: Protective headgear includes, for example, a headgear body that is wearable on a head of a baseball umpire. At least one sensor is configured to generate imaging data that includes a batter in proximity to home plate. A processor analyzes the imaging data to determine a strike zone of the batter and to generate augmented reality data in response thereto. A display device generates a heads up display of the strike zone that is viewable to the baseball umpire during a pitch to the batter, based on the augmented reality data. Other embodiments are disclosed.

Abstract: Described here are self-contained surgical navigation systems which include a head-worn display device to be worn by a user during surgery. The system includes a display generator for generating a visual display on the display device, and a sensor suite having at least one tracking camera. The system further includes a support module including: a user-replaceable, modular battery that is reversibly insertable into a housing of the support module, and a processor unit configured to receive data from the sensor suite and calculate a position and an orientation of at least one marker. The support module is electrically coupled to the head-worn display device to provide power and data to the head-worn display device. The display device and the support module together comprise the entire sensing and computing capability of the system, without requiring external sensors, cameras, computers, or other electrical equipment.

Abstract: A protective mask includes a main frame body made of magnesium alloy and having an imaginary vertical central line. The main frame body has a plurality of first rods arranged along the central line, a plurality of second rods, and at least one first protrusion. Each of the first rods has spaced-apart first front and rear surfaces, and two opposite first connecting surfaces interconnecting the first front and rear surfaces. A thickness between the first front and rear surfaces is larger than a thickness between the first connecting surfaces. Each of the second rods is connected between two adjacent ones of the first rods. The first protrusion protrudes from the first front surface of one of the first rods.

Abstract: A helmet mounted visor includes a lens that may be configured to extend across substantially all of a user's face. The helmet mounted visor may include a pair of mount arms coupled to the lens and each configured to releasably mount to a mount attached to a helmet. The pair of mount arms may each including first, second and third portions. The first portion may be rotatably coupled to the second portion about a first axis. The first portion may be rotatably coupled to the third portion about a second axis. The second axis may be generally perpendicular to the first axis. A locking mechanism may be provided and configured to selectively retain the first portion relative to the second portion in and between a use position where the lens is positioned in front of the user's face and a stowage position where the lens is positioned proximate the top of the helmet.

Abstract: A helmet has a helmet shell. The helmet shell defines an inner space and a passage. The passage has an open end. The passage fluidly communicates with the inner space via the open end. The helmet further comprises an electrical heating device. The electrical heating device is disposed within the helmet shell for heating the passage.

Abstract: A display apparatus has an image generator that generates image-bearing light from a surface and a lens spaced apart from the image generator and having an aspheric incident refractive surface concave to the image generator and having an aspheric reflective surface concave to the image generator, wherein a principal axis of the reflective surface is normal to the image generator. A beam splitter plate disposed in free space between the image generator and the lens has first and second parallel surfaces that are oblique to a line of sight of a viewer. The lens and the beam splitter plate define a viewer eye box for the image-bearing light along the line of sight of the viewer.

Abstract: A helmet can include a protective shell and a layer of energy management material coupled to an inner surface of the protective shell to form a cavity for receiving a head of a user. An earpad can be coupled to the inner surface of the protective shell that comprises an inner surface that further defines a space for an ear of a user. The earpad can further include a leading edge at a front of the helmet, the leading edge extending between the outer surface of the protective shell and the inner surface of the earpad. An air intake opening can be formed at the leading edge of the earpad. An air exhaust opening can be formed at a trailing edge of the earpad. An airflow channel can extend through the earpad between the air intake opening and the air exhaust opening.

Abstract: A flocked helmet cover pad (FHCP) attachable add-on to a helmet cover includes a central hub and multiple appendages attached to the central hub. The appendages are shaped and arranged to provide additional impact energy absorption properties for a helmet.

Abstract: An automatic strap-tensioning system is provided for head-worn electronic gear including a microprocessor, a powered drive mechanism and sensors. In use, microprocessor reads the outputs of the sensors and, if prescribed conditions are met, instructs the drive mechanism to tension the straps of the headset. The sensors are used as feedback to control the level of tension in the straps.

Abstract: A helmet may include a helmet body, a fit system, a bezel, and a hardware retainer. The helmet body may have an outer shell and an energy management layer. The bezel may be separate from the outer shell and coupled to the helmet body at the vent opening of the helmet, encircle the vent opening, and have a hardware opening extending through the bezel and an anchor opening in the bezel adjacent the hardware opening. The hardware retainer may be positioned behind and coupled to the bezel. The hardware retainer may include a hardware receiving aperture aligned with the hardware opening and a hardware retainer cover coupled to a rear side of the hardware retainer. The hardware retainer may further include an anchor recess aligned with the anchor opening. The bezel may be in-molded into the energy management layer.

Abstract: A type variable helmet includes a half face unit formed to cover an upper part of a user's head, and an under face unit detachably attached to a lower part of the half face unit and configured to cover a lower part of the head of the user.

Abstract: A facial sealing segment for a respiratory device includes a sealing flap adapted to sealingly engage the face of a user. The sealing flap is disposed about, and defines, a cutout adapted to receive one or both of the mouth or nares of the user. The facial sealing segment further includes a number of selectively removable portions formed in the sealing flap about the cutout. Each removable portion is defined in the sealing flap by a tear portion. The facial sealing segment may be customized by a method that includes removing at least one of the removable portions by separating the at least one removable portion from the remainder of the sealing flap by severing along the tear portion thereof.

Abstract: A helmet includes an operation mechanism, which is accommodated in an accommodation portion, on an outer shell of the helmet for operating an anti-glare visor with a transmission cable. One wall surface at an end of the accommodation portion in an operation direction defines an end surface including an insertion hole extending through the outer shell for passage of the transmission cable.

Abstract: A device for shielding an outdoor camera from light interference. The light shielding device includes a visor having a brim perpendicularly and pivotally connected to a panel, wherein the panel can rest flush against a support and the brim extends over a camera in order to shield the camera lens from direct sunlight and inclement weather. A first strap extends from a first side of the panel and a second strap extending from a second side of the panel, wherein a distal end of each of the first and second strap removably secure to one another to form a loop. A male and female fastener are disposed at the distal ends of each strap and removably secure the device to the support. In some embodiments, a plurality of teeth extend from an interior side of the panel and can penetrate the support for further securing the device thereto.

Abstract: A protective helmet including a helmet body, a facemask extending from the front portion to cover at least a portion of a face of a wearer, and one or more adjustment mechanisms securing the facemask to the helmet body. The adjustment mechanism(s) is/are connected to the helmet, include(s) an engagement member engaged with the facemask, is/are selectively engageable with the facemask in at least two vertically spaced apart positions of the facemask relative to the helmet body, and allow(s) toolless adjustment between the vertically spaced apart positions. Adjustment mechanisms and methods of positioning a facemask are also discussed.

Abstract: Aspects of the disclosed apparatuses, methods and systems provide coating profiles for optics of a stereoscopic vision system configured to reduce unwanted light. Offset masks are used to provide gradient coating thicknesses. A method of forming the optical system with coatings and mechanical holder used during the method also are provided.

Abstract: Visor assembly (1) comprising an outer shield (2) and an inner shield (6) which is arranged at a distance therefrom and lies within the periphery of the outer shield, wherein a spacer (7) extending along the periphery of the inner shield is provided in order to hold the inner shield at a predetermined distance from the outer shield, wherein mechanical fixing means (10, 12) are arranged between the two shields for mutual fixation thereof, wherein the inner shield is formed at the position of its periphery such that a protrusion (7) from the inner shield is obtained, this protrusion forming the spacer.

Abstract: The present invention is a helmet-mounted radio assembly with extended controls. In the helmet-mounted radio assembly, a radio device is removably mounted on a helmet. The radio device includes extensions connected to the microchips for controlling various functions thereof. The extensions extend outside of a body of the radio device, and control dials are provided at distal end of the extensions. Thus, a user can have extended controls ergonomically located within easy reach thereof for controlling the regular functions, like volume control, changing channel frequency, or switching on/off the radio device. The helmet-mounted radio assembly utilizes reliable mounting arrangement, such as use of band and clips, screws or other suitable mounting member for removably mounting the radio device to the helmet.

Abstract: Arrangements described herein relate to systems, apparatuses, and methods for a head cradle pad configured to be affixed to a head cradle of a medical device, the head cradle pad includes a first section corresponding to a shape of a top portion of the head cradle, a second section corresponding to a shape of a bottom portion of the head cradle, and a center connection portion connecting the first section and the second section. The first section and the second section are shaped to form spatial gaps when the head cradle pad is in a flat state when the head cradle pad is un-affixed to the head cradle. The first section and the second section are shaped to eliminate the spatial gaps when the head cradle pad is affixed to the concave surface of the head cradle.

Abstract: An apparatus can include headwear having a head receiver that is pivotally coupled to a first shield. A second shield can be attached to the headwear exterior to the first shield. The second shield can include a holographic optical element. An electronic device can be coupled to, or alternatively integrated with, the first shield. One or more processors of the electronic device can determined whether the first shield is in a first position relative to the head receiver or a second, angularly displaced position. Where the first shield is in the first position, the one or more processors can operate the electronic device in a virtual reality mode of operation. Where the first shield is in the second, angularly displaced position, the one or more processors can operate the electronic device in an augmented reality mode of operation.

Abstract: A chin guard support mechanism includes first and second fixed-side members, and a moving-side member fixed to the chin guard. When the chin guard pivots forward from a down position in a rising direction, an annular following surface provided on the moving-side member pivots forward while following an annular followed surface provided on the second fixed-side member to make the chin guard rise while moving forward. It is possible to provide a helmet that allows the chin guard support mechanism capable of relatively excellently raising/lowering the chin guard to have a simple structure, allows to operate the chin guard support mechanism smoothly, obviates the necessity of making the structure in a region including an end of the chin guard including the chin guard support mechanism and a vicinity thereof bulky, and obviates the necessity of making the widthwise size of the helmet large.

Abstract: Implementations of a helmet liner are provided. In some implementations, the helmet liner may be configured to be worn in conjunction with a helmet and/or a headset (e.g., a communication and/or hearing protection headset). In this way, the helmet liner may be used to provide localized thermal comfort for the wearer's head when a helmet and/or a headset is worn. In some implementations, the helmet liner may have a dome-like shape configured for anatomically fitting the head of a wearer. In some implementations, the helmet liner may comprise a front portion, a top portion, a back portion, a first side portion, and a second side portion. In some implementations, the helmet liner may further comprise a first slot and a second slot that extend through the first side portion and the second side portion, respectively.

Abstract: A glare visor (13) for reducing ambient light intensity perceived by a wearer viewing a head-up display (3) employing display light (7) including a given wavelength(s) of light. The visor includes a visor body comprising optically transparent material which is partially absorbing of light of visible optical wavelengths thereby to reduce the intensity of ambient light transmitted therethrough to the wearer. A transparent optical coating (12) is formed upon a surface of the visor body which is partially transmissive of light of visible optical wavelengths amongst which it is preferentially transmissive of light of a sub-range of wavelengths for including therein the wavelength(s) of display light. This permits a perceived enhancement of contrast between display light (7) relative to ambient light (8).