A headset for augmented reality applications is provided. The headset includes at least one eyepiece configured to provide a see-through image to a user via a transparent optical component, and to provide an artificial image through a display, and a dimming shutter configured to adjust a transparency level of the transparent optical component. The dimming shutter further includes an active liquid crystal layer configured to adjust a transparency level according to an electrical power provided between two electrodes, and a photoactive layer configured to adjust the transparency level upon absorption of an ultraviolet radiation for a selected period of time. A default orientation of a host material in the active liquid crystal layer may be in a dark state or in a clear state, when no electrical power is provided. A method and a memory storing instructions to execute the method for use of the above device are also provided.

The present invention provides an optical composition from which an optical article having reduced poor appearance such as cloudiness and optical strain during lens base material production can be obtained, and when a photochromic compound is added, a photochromic cured body having excellent photochromism and mechanical strength can also be formed, and a polyrotaxane used therefor. The polyrotaxane has a composite molecular structure formed of an axle molecule and a plurality of cyclic molecules clathrating the axle molecule, satisfying at least one of (X) and (Y). (X): A side chain having a secondary or tertiary hydroxyl group is introduced into at least part of the cyclic molecule of the polyrotaxane. (Y): A side chain having a group represented by -A (A is an organic group, and contains at least one hydroxyl group) is introduced into at least part of the cyclic molecule of the polyrotaxane, and a pKa of the hydroxyl group of the compound represented by H-A is 6 or more and less than 14.

The present invention provides an optical composition from which an optical article having reduced poor appearance such as cloudiness and optical strain during lens base material production can be obtained, and when a photochromic compound is added, a photochromic cured body having excellent photochromism and mechanical strength can also be formed, and a polyrotaxane used therefor. The polyrotaxane has a composite molecular structure formed of an axle molecule and a plurality of cyclic molecules clathrating the axle molecule, satisfying at least one of (X) and (Y). (X): A side chain having a secondary or tertiary hydroxyl group is introduced into at least part of the cyclic molecule of the polyrotaxane. (Y): A side chain having a group represented by -A (A is an organic group, and contains at least one hydroxyl group) is introduced into at least part of the cyclic molecule of the polyrotaxane, and a pKa of the hydroxyl group of the compound represented by H-A is 6 or more and less than 14.

Provided is a spectacle lens having, on at least one side of a lens substrate, a polarizing layer containing a dichromic pigment, and a photochromic layer containing a photochromic pigment, and having the polarizing layer and the photochromic layer via an intermediate layer.

An electrochromic element, includes: a pair of electrodes (3, 5); and an electrochromic layer (7) disposed between the pair of electrodes (3, 5), the electrochromic element being controlled in transmittance by pulse width modulation, in which: the electrochromic layer (7) contains at least one of two or more kinds of anode electrochromic materials, or two or more kinds of cathode electrochromic materials; and all of one of the anode electrochromic materials and the cathode electrochromic materials have an equal molecular length, or have a molecular length ratio of (large molecular length)/(small molecular length) of 1.4 or less, the electrochromic element being such that even when a driving environment temperature changes, its gradation can be controlled under a state in which its absorption spectrum is retained.

An optical article, such as a spectacle lens, includes, on a substrate, a photochromic layer containing a photochromic dye and a resin component, and a protective film. The indentation hardness of the photochromic layer in the thickness direction is less than or equal to the indentation hardness of the surface of the substrate. The result of multiplying the indentation hardness of the protective film in the thickness direction and the thickness of the protective film is five-hundredths or more times and one or less times the result of multiplying the indentation hardness of the photochromic layer in the thickness direction and the thickness of the photochromic layer.

Window controllers and methods for controlling tinting and other functions of tinting zones of multi-zone tintable windows and multiple tinting zones of a group of tintable windows.

A polymerizable composition for an optical material according to the present invention includes a photochromic composition (A), and a polymerizable composition (B) including a bi- or higher functional iso(thio)cyanate compound and a bi- or higher functional active hydrogen compound, in which the photochromic composition (A) is a composition including at least three types of photochromic compounds (i) to (iii), the photochromic compound (i) has a structure including a chromophore a and a monovalent or a divalent organic group including one or more types of a polysiloxane chain or a polyoxyalkylene chain, the photochromic compound (ii) has the chromophore a (which is not the photochromic compound (i)), and the photochromic compound (iii) has a chromophore b different from the chromophore a.

A polymerizable composition for an optical material according to the present invention includes a photochromic composition (A), and a polymerizable composition (B) including a bi- or higher functional iso(thio)cyanate compound and a bi- or higher functional active hydrogen compound, in which the photochromic composition (A) is a composition including at least three types of photochromic compounds (i) to (iii), the photochromic compound (i) has a structure including a chromophore a and a monovalent or a divalent organic group including one or more types of a polysiloxane chain or a polyoxyalkylene chain, the photochromic compound (ii) has the chromophore a (which is not the photochromic compound (i)), and the photochromic compound (iii) has a chromophore b different from the chromophore a.

The photochromic composition contains one or more compounds represented by General Formula A, one or more compounds represented by General Formula B, and one or more compounds represented by General Formula C is provided. In General Formula A, R.sup.1 to R.sup.6, B.sup.1, and B.sup.2 each independently represent a hydrogen atom or a substituent. In General Formula B, R.sup.7 to R.sup.12, B.sup.3, and B.sup.4 each independently represent a hydrogen atom or a substituent, and R.sup.13 and R.sup.14 each independently represent an electron-donating group. In General Formula C, R.sup.15 to R.sup.20, B.sup.5, and B.sup.6 each independently represent a hydrogen atom or a substituent, and one of R.sup.21 and R.sup.22 represents a hydrogen atom and the other represents an electron-donating group.

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