The spectacle lens includes a lens substrate including a blue light absorbing compound, and a multilayer film including a metal layer having a film thickness of 1.0 nm to 10.0 nm, wherein a blue light cut ratio is 35.0% or more, an average reflectance in a wavelength range of 400 nm to 500 nm on an object-side surface obtained by measurement from the object side is in a range of 15.00% to 25.00%, and an average reflectance in a wavelength range of 400 nm to 500 nm on an eyeball-side surface obtained by measurement from the object side is less than 2.00%.

The spectacle lens includes a lens substrate; a multilayer film disposed on one surface of the lens substrate; and a multilayer film disposed on the other surface of the lens substrate, wherein an average reflectance within the wavelength range from 380 to 500 nm measured at least on one surface of the spectacle lens is 10.00% or more, and a reflectance measured at least on one surface of the spectacle lens is 5.00% or less in the entire range within the wavelength range from 400 to 780 nm.

A wireless headlight assembly for attachment to an eyewear frame is disclosed. The wireless headlight assembly comprises a battery pod containing a battery connected to a lower housing element, which controls the application of power from the battery to an attached headlight assembly containing a headlight.

A flip-up eyeglasses include a main eyeglass, a secondary eyeglass, and an elastic hook member. The main eyeglass has a main frame, and the bridge of the main frame is connected with a connecting member extending horizontally forward. The connecting member has two engaging slots and two rectangular-shaped positioning portions that are formed between the front edge of the connecting member and the two engaging slots. The secondary eyeglass has a secondary frame, and the bridge of the secondary frame forms two grooves. The elastic hook member has a sheet portion and two hook portions that are configured to be hooked onto the two positioning portions through the two engaging slots and to be abutted against the two grooves, such that the positioning portions are sandwiched by the bridge of the secondary frame and the hook portions of the elastic hook member.

Dual-frame eyeglasses that include a foundation eyeglass frame that may be worn on the user's head, and a pivot eyeglass frame that is rigidly coupled to the foundation eyeglass frame via a pair of pivot mechanisms. The pivot eyeglass frame may be substantially similar in form and profile to the foundation eyeglass frame. The pivot eyeglass frame may be configured to incrementally rotate about the pivot mechanism from a first position that substantially overlaps a user's line of sight through to a second position that is angularly offset away from the user's line of sight. Additionally, the foundation eyeglass frame may include a nose bridge that separates into two elements at a coupling point on the nose bridge to facilitate each half of the foundation eyeglass frame folding into a separate, compact form.

Systems, devices, techniques and methods for concurrent use of head mounted displays with surgical loupes during surgical procedures are provided. In some embodiments, the head mounted display comprises a display unit with a combiner and the surgical loupe is mounted below the display unit. In some embodiments, eye relief from the back side of the combiner to the front surface of the cornea is the same or smaller than a vertex distance from the back lens of the surgical loupe to the front surface of the cornea.

Head-mounted accessories for surgeons and medical/dental practitioners are equipped with no-touch, hands-free controls. A voice-activated headlamp includes a controller operative to send a signal to control a light source in accordance with a voice command received through an integrated or remote microphone. The voice command and control may be speaker-dependent or speaker-independent, and the head-mounted unit may include an interface to a computer for voice-command training or other purposes. The head-mounted unit includes a memory for storing the voice commands. The invention may be used to control other medical/dental accessories such as a head-mounted video camera, in which case the controller is further operative to at least turn the video camera ON or OFF. More preferably, a controller is additionally operative to control the focus or zoom of the video camera in accordance with a voice command.

Head-mounted accessories for surgeons and medical/dental practitioners are equipped with no-touch controls including, in different embodiments, passive and active infrared detection, voice operation, and capacitive proximity control. Compared to infrared, capacitive proximity control may be more omni-directional, whereas IR, particularly active IR, tends to be more effective in a cone of operation. Compared to voice activation, capacitive sensing is less expensive and less prone to false activation based upon ambient noise or other voices. The invention may be used to control other medical/dental accessories such as a head-mounted video camera, in which case the controller is further operative to at least turn the video camera ON or OFF. More preferably, a controller is additionally operative to control the focus or zoom of the video camera in accordance with touch-free commands.

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.

An adaptive spectacle lens includes a spectacle frame and a pair of progressive additional lenses mounted to the spectacle frame. Each progressive additional lens includes a distant vision region positioned at an upper portion. The distant vision region has a diopter of zero and functions with a pair of main lenses.