A system for the color coding of objects in the field of view of a plurality of spectacle wearers includes a pair of spectacles per spectacle wearer. Liquid crystal cells of at least one spectacle lens of the spectacles are so designed that a transmission (TR) of the liquid crystal cells may be switched between high and low transmission states. The system also includes one RGB light source per spectacle wearer and means for controlling or regulating the luminance times, color and intensity of the RGB light source such that the light source for a first spectacle wearer illuminates with a first color at a time of the state of high transmission of the liquid crystal cell and the light source for a second spectacle wearer illuminates at a time of high transmission of the liquid crystal cell of their spectacles with a second color different from the first.

The invention relates to a system for visual enhancement. The system suppresses glare and includes a spectacle lens having a liquid crystal cell, the transmission of which can be switched between high and low transmission states. The system also includes at least one sensor for measuring the brightness of the visible light incident on it, the sensor being arranged on the eye side of the spectacle lens and measuring the brightness entering through the at least one spectacle lens. The system also includes a closed loop control circuit for regulating the transmission of the liquid crystal cell so that the times of the state of high transmission become shorter with increasing glare. The system includes a display for controlling the lighting times and the luminous intensity of the display during the state of high transmission of the liquid crystal cell.

A protective cartridge for a glare protection apparatus, includes an optical glare protection filter which, in particular, has at least one liquid crystal cell, including at least an open-loop and/or closed-loop control unit, which is configured to control and/or regulate a permeability of the optical glare protection filter, at least between at least one bright level and at least one dark level, depending on a captured work state, on an electronic signal of an external signal source and/or on light irradiation. The permeability of the optical glare protection filter at at least one bright level corresponds to a protection level of less than 2.5, preferably of at most 2.4, advantageously of at most 2.25, particularly advantageously of at most 2 and preferably of at most 1.7.

The invention is based on a sun protection device, in particular sun spectacles, with at least one optical sun protection filter comprising at least one liquid-crystal cell, with at least one sensor unit configured for capturing a solar irradiation, and with at least one control and/or regulation unit, which is configured for controlling and/or regulating a permeability of the optical sun protection filter depending on a solar irradiation.

Device (1) for protecting eyes from radiation, preferably from 100 nm to 1 mm and in particular from UV light or infrared, comprising at least two sensor arrangements (2/3), external (2) and internal sensor arrangement (3), wherein each sensor arrangement (2/3) comprises plurality of radiation sensors (2a/3a) arranged one after the other, which are each arranged along closed curve (2b/3b), and wherein the internal sensor arrangement (3) is surrounded by the external (2), and wherein the external and internal sensor arrangement (2/3) are arranged adjacently to each other, and wherein the internal sensor arrangement (3) encloses radiation passage region (4), and wherein the radiation passage region (4) comprises radiation passage opening (5), and wherein a closing device (6) is arranged in such a way with respect to the radiation passage region (4) that an incident radiation (S) passing through the radiation passage opening (5) is either let pass through or at least partially attenuated, and comprising control device (8) which is connected to the internal sensor (2), the external sensor arrangement (3) and the closing device (6).

An automatic-darkening filter 10, 10 that comprises a first polarizer 14, a second polarizer 18, a first liquid-crystal cell 16, and a sensor 64. The first polarizer 14 has a first polarization direction, and the second polarizer 18 has a second polarization direction. The liquid crystal cell 16 is disposed between the first and second polarizers 14, 18 and contains first and second optically-transparent, flexible, glass layers 40 and 42 with the liquid crystal layer 48 being located between these layers. The sensor 64 detects incident light and causes a signal to be sent, which causes molecular rotation within the liquid crystal layer. The inventive automatic-darkening filter is beneficial in that overall product weight can be reduced and the view field can be increased.

A system for the color coding of objects in the field of view of a plurality of spectacle wearers includes a pair of spectacles per spectacle wearer. Liquid crystal cells of at least one spectacle lens of the spectacles are so designed that a transmission of the liquid crystal cells may be switched between high and low transmission states. The system also includes one RGB light source per spectacle wearer and means for controlling or regulating the luminance times, color and intensity of the RGB light source such that the light source for a first spectacle wearer illuminates with a first color at a time of the state of high transmission of the liquid crystal cell and the light source for a second spectacle wearer illuminates at a time of high transmission of the liquid crystal cell of their spectacles with a second color different from the first.

This invention relates to an optical filter for use in eyewear such as ski googles, as well as eyewear using the filter. For improving visibility in snow dominated locations, the filter has a transmission spectrum having a first transmission peak in the wavelength range of 620 nm-670, with a maximum at approximately 650 nm.

A protective eye mask for practicing winter sports and in particular alpine skiing is provided. The protective eye mask is provided with an electrically powered lyquid crystal (LC) lens having at least one LC layer made of guest-host (GH) type liquid crystals.

A protective helmet for practicing sports activities or using motorized vehicles is provided. The protective helmet has a cap provided with a front opening in an eye region of a user and closed by a visor assembly. The visor assembly has at least one at least partially transparent structural lens, the at least partially transparent structural lens being a thermoformed sheet of polymer material, a guest-host type liquid crystal (LC) film adapted to modify its own transparency level, arranged behind the at least partially transparent structural lens, and at least one electrical source for powering the LC film.