The vision protection apparatus of the present invention includes a wiper mechanism which allows a user to clear condensation from an inner surface of a lens without removing the vision protection apparatus.

The present invention is to provide a head strap device which includes a head strap having a first set of connecting section, a second set of connecting section, and a central section, and an adjustment buckle for positioning and adjusting the head strap, characterized in that: the central section of the head strap is a curved surface that can be naturally approach engagement on a back of the head while worn to avoid the head strap sliding, in addition, an opening disposed within a body of the adjustment buckle, and a pins and a guide posts disposed with misaligned each other on the opening that can separate the overlapping head strap after assembled, so that there is no need to remove the swimming goggles when the head strap is worn and adjusted, to achieve the effect of easily use.

This invention concerns swimming or diving goggles for a user, characterized by the following combination of features: the cylindrical front vision portion (3a, 3b), on a horizontal cross-section of the lens (1a, 1b), has a thickness variation of between 2.0 mm and 4.0 mm, and the spherical lateral vision portion (4a, 4b), on a horizontal cross-section of the lens (1a, 1b), has a thickness variation of between 2.5 mm and 5 mm, and the lenses (1a, 1b) have a cylindrical curvature on a vertical cross-section of the lens (1a, 1b) of the cylindrical front vision portion (3a, 3b), and the lenses (1a, 1b) have a spherical curvature on a vertical cross-section of the lens (1a, 1b) of the spherical lateral vision portion (4a, 4b).

The present invention relates to an anti-fog device including: a lens unit including a first lens positioned outside and a second lens spaced apart from the first lens while facing the first lens to form an internal space and having a liquid filled in the internal space; a temperature control unit controlling a temperature of the liquid; and a circulation unit of which one side is connected to the internal space and the other side is connected to the temperature control unit to form a passage through which the liquid circulates. According to the present invention, it is possible to prevent record deterioration of a sports event or an accident during exercise by preventing occurrence of fog of goggles or swimming goggles to secure a visual field.

The invention relates to spectacles, systems and methods for visibility enhancement, including by glare suppression. The spectacles, systems and methods for visibility enhancement includes spectacles and a spectacle lens having a liquid crystal cell (LC), the transmission (TR) of which may be varied by a suitable control and the liquid crystal cell (LC) designed so that the transmission (TR) of the liquid crystal cell (LC) may be switched between high and low transmission states. The liquid crystal cell (LC) includes a control for regulating the times of the state of high transmission (T.sub.on) of the liquid crystal cell (LC) such that the temporal position of the times of the high transmission state (T.sub.on) within a period of times of the high transmission state (T.sub.on) and times of the low transmission state (T.sub.off) may be altered continuously or discontinuously; and/or the duration of a period of times of the high transmission state (T.sub.on) and times of the low transmission state (T.sub.off) may be altered continuously or discontinuously. Such changes may be determined by a secret coding key.

A system includes a minimally intrusive display system (MIDS) configured to be disposed on an eyewear. The MIDS includes a display system and a sensor system configured to provide for a sensor data. The MIDS further includes a processor configured to process the sensor data to derive a physiological measure. The processor is further configured to display, via the display system, the physiological measure, wherein the display system is disposed in the eyewear so that the physiological measure is only viewed when a user of the eyewear turns the user's pupil towards the display system at angle α from a forward direction.

A structure of a foldable underwater sports mask, comprising a body, two lenses and a water sealing skirt, wherein the body has two lens frames and a bridge connecting the two lens frames. The two lens frames are capable of being at least partially separated from each other at an area of the bridge, so that the mask can be in a folded state for easy storage and carrying.

A breathable mask includes a main body, a breathing tube, a head strap and a chin strap or support. The breathing tube can be in fluid communication with the interior of the main body. The head strap and a chin strap or support form a three-point fix from a user’s head to the main body of the mask.

A face device for monitoring biomedical parameters of a user provides a support and housing structure shaped so as to be applied to the head of the user, an oximetry sensor fitted to the support and housing structure so as to adhere, in an operating position, to the face of the user at the facial artery, a sound source fitted to the support and housing structure so as to adhere, in an operating position, to a cranial bone of the user, an independently powered electronic board for processing data, received in the support and housing structure and connected to the oximetry sensor and to the sound source so as to detect and process signals coming from the oximetry sensor and to provide information on biomedical parameters to the user acoustically through the sound source. This face device does not engage or distract the user.

A hydrodynamic swimming mask includes a front mask, including a face lens and a sealing element; and a head strap, such that the sealing element is configured to connect with a skin surface of a face of a user, such that the sealing element and the face lens are configured to form a water tight enclosure that covers the eyes of a user when the user is wearing the hydrodynamic swimming mask, such that the front mask is configured with a shape such that the seal forms a smooth border between the skin surface of the user and the face lens, when the front mask is put on the face of the user, such that there are no depressions, cavities, indentations, or protrusions in the smooth overlap between the face lens and the face of the user, which would cause increased water resistance during swimming.