A mud visor formed by a substantially transparent sheet is attached to a goggle lens. The mud visor may be attached to the goggle lens using a substantially transparent adhesive or adhesive tape. Thus, the mud visor may provide clear and improved field of view for the user. Further, the mud visor may be configured to cover and guide a top portion of a roll-off film as the roll-off film is conveyed across the goggle lens. A top portion of the mud visor may be inserted into the lens groove of a goggle frame along with the goggle lens when the goggle lens is attached to the goggle frame. The mud visor also may stretch across the goggle lens and overlap with film canisters at both sides to provide a seamless coverage to prevent mud from entering behind the mud visor or the roll-off film.

A protective goggle assembly having a pair of eye cup assemblies adapted to be easily adjusted by medical personnel. A cooperating ball and socket structure is provided within a housing structure extending from each eye cup assembly and which receive the nose bridge wire ends of a formed nose bridge wire. Each socket ball has a formed channel therethrough to receive the nose bridge wire ends and to provide adjustability. The ball and socket structure permit medical personnel to rotate the nose bridge during a medical procedure without effecting the position of the eye cups covering the patient's eyes.

A metamaterial optical filter including: a transparent substrate; and a photosensitive polymer layer provided to the transparent substrate, wherein the photosensitive polymer layer is treated using a laser to form a non-conformal holographically patterned subwavelength grating, the holographic grating configured to block a predetermined wavelength of electromagnetic radiation. A system and method for manufacturing holographically patterned subwavelength grating onto the photosensitive polymer layer including: applying a photosensitive polymer layer to a transparent substrate; placing the photosensitive polymer layer between a laser and a mirror; scanning the laser over the photosensitive polymer layer such that a holographic grating is created within the photosensitive polymer layer by interaction between the laser light and light reflected from the mirror; and stacking two or more holographically patterned subwavelength grating layers to form complex metamaterial optical filter stacks.

A work support system, including: projector which projects circularly polarized light that rotates in a helix centered about a given optical axis in one direction and travels in a first direction perpendicular to a plane of rotation; projection target disposed against the first direction and diffusely reflects the circularly polarized light projected by the projector; and eyeglasses including a pair of lenses which block, when disposed against the first direction in which the circularly polarized light projected from the projector travels, the circularly polarized light traveling in the first direction, and allow, when disposed against a second direction perpendicular to a rotating plane on which circularly polarized light that is part of the light diffusely reflected by the projection target rotating in a direction opposite to the first direction of a helix centered around a given optical axis travels, the circularly polarized light traveling in the second direction to pass.

The present disclosure discloses a goggle device and a spectacle frame thereof. The spectacle frame includes a buckling structure arranged on an end portion thereof. The buckling structure has an accommodating space and an entrance in spatial communication with the accommodating space. The buckling structure includes a cantilever arranged in the accommodating space and a retaining wall that is arranged in the accommodating space and is spaced apart from the cantilever. A free end portion of the cantilever is arranged adjacent to the entrance, and the cantilever is rotatable between a lock position and an unlock position. When the cantilever is at the lock position, the free end portion shields the entrance. When the cantilever is rotated to the unlock position by an external force, the free end portion does not shield the entrance, and the cantilever is deformed to store an elastic force.

An optical system having a spectral transmission profile having an average transmittance Ta between 380 nm and 780 nm and an average red light transmittance Tr between a first limit L1 and a second limit L2, with Tr<2*Ta/3 and L1=600 nm and L2=780 nm, and the optical system being configured to allow selectively retinal exposure of an eye to at least one selected range of wavelengths of light in the visible spectrum of 460 nm to 530 nm.

A vision-protecting filter lens, including a multilayer optical film and a neutral-density optical filter.

A facial protection equipment for an easy operation of rotating opening and closing, includes: a facial protection unit of which one side is supported at one side of a face of an operator and which shields and protects at least the one side of the face of the operator; a fixing unit that is worn on a head of the operator; and a connection member of which one end portion is coupled to one side of the fixing unit to be rotatable in an up-down direction and another end portion is coupled to the facial protection unit, where the connection member has a pivot bracket of which one end portion is coupled to the one side of the fixing unit to be rotatable in the up-down direction.

Using two or more cameras attached to the eyewear, three-dimensional views with accurate and natural depth perception of the working area can be displayed for users, so that the user can maintain healthy sitting or standing posture while working on patients or objects located below horizontal eye level. Additional functions including eye protection, zoom-in, zoom-out, on-off, lighting control, overlapping, and teleconference capabilities are also supported using electronic, video and audio devices attached to the eyewear. The eyewear can also comprise a face shield designed to protect the user from hazardous droplets, aerosols, harmful wavelengths of light, heat, sparks, flash burn, debris and/or flying objects.

A low-emissivity film for an article of personal protective equipment (PPE) having a lens is provided. The low-emissivity film is configured to be attached to at least one of an inner surface and an outer surface of the lens. A low-emissivity coating for the article of PPE is also provided.