A head-mounted display system includes a head-mounted display unit and a positioning and stabilising structure structured and arranged to hold the head-mounted display unit in an operational position over a user's face in use. The positioning and stabilising structure includes a rear support structure adapted to contact posterior regions of a user's head and at least one connector structured and arranged to interconnect the rear support structure to the head-mounted display unit. The rear support structure is in the form of a hoop comprising an occipital portion configured and arranged engage the user's head along a portion of the occipital bone adjacent a junction where the neck muscles attach to the occipital bone in use.

A tactical mirror system includes a convex mirror that may be rapidly deployed and adhesively affixed to a room entry door to provide a room entry team member with a view of the room interior from a concealed cover position outside the room adjacent to the doorway is disclosed. A rip-cord is affixed to allow the user to peel away a protective layer thereby exposing an adhesive coated surface thereby allowing for rapid affixation of the mirror. A pair of diametrically opposed notches and a resilient transversely disposed band that function to allow the mirror device to be removably mounted to a baton to allow a room entry team member to manually extend and position the mirror. A plurality of mirrors may be provided and configured for compact nested storage thereby providing the user with a plurality of deployable mirror devices.

An overhead support includes a transparent structure to support a visual medium for display to a supine viewer. The support is suspended from a ceiling over a location where the viewer wishes to recline. The support includes a positioning mechanism for easily adjusting the height of the visual medium above the viewer. In an embodiment, the positioning mechanism has a lock for fixing the height. In another embodiment, the support includes a light source. In another embodiment, the support includes an optical prescription.

A hand-held emergency vision apparatus comprises an enclosed tubular structure having opposite first and second ends; first and second clear members disposed at respective the first and second ends; the structure including a plurality of tubular members retractable to a shorter length and extendable to one of several lengths, the tubular members are rigid and sealed from the outside air; and a filter operably associated with the tubular structure to filter the outside air such that when the tubular structure is extended from the compact form air the outside air is forced through the filter and clean air enters the tubular structure.

Camera phone accessories for using the camera phone to collect scientific data.

A support member for a wearable device includes first and second contact portions coming into contact with a temporal region of a head, a frame portion interposed along a frontal region of the head between the first and second contact portions, and first and second connection portions respectively connecting the first and second contact portions and the frame portion to each other. In a top view, in the first connection portion, a first extension portion extending from the first contact portion and a first frame extension portion are branched ahead of an ear from the frame portion, and in the second connection portion, a second extension portion extending from the second contact portion and a second frame extension portion are branched ahead of the other ear from the frame portion. At least one of the first and second frame extension portions includes a support portion supporting a wearable device.

A sign and display system including a faceplate, lens, backing plate, and at least one magnet is described. The faceplate includes a viewing aperture and the back of the faceplate includes a recess in which the at least one magnet is mounted. The recess in the faceplate is configured to receive the lens and backing plate. The lens may include one or more edge protrusions configured to enter one or more small recesses in the side of the faceplate recess to secure the lens to the faceplate. When the lens and backing plate are positioned in the recess of the faceplate, the one or more magnets exert a force on the backing plate to secure the faceplate and lens to the backing plate. An insert capable of displaying text and/or graphics can also be positioned between the lens and backing plate in the recess of the faceplate.

A magnifying container assembly for storing and improving the visibility of items stored within the container assembly includes a base section and at least one wall section extending away from the base section. The base section and at least one wall section form an enclosure that can receive at least one item within the enclosure. At least a portion of the at least one wall section may include a transparent magnifying region that magnifies an item or items retained within the enclosure. The container may include a plurality of magnifying regions with differing degrees of magnifying powers. The base section may include grooves, ridges, or other retaining element or elements to retain an item in a particular position within the container. When an item is disposed within the container the at least one magnifying region facilitates and improves viewing of the contents of the container.

A customized viewing system for an optical device to alleviate back and neck strain.

A viewing optic has a housing. The base of the housing has a front side, a rear side, a left side and a right side which together define an upper surface. A first control is positioned on the left side of the base. A second control is positioned on the right side of the base.