An eyewear lens assembly is characterized by at least a first specific light transmittance, a second specific light transmittance, and an overall visible light transmittance. The first specific light transmittance is focused on the blue spectrum up through, and including, about 440 nm to 445 nm. The light transmittance should reflect a reduction of light in the range of 95%-100%. The second specific light transmittance is focused on the yellow spectrum, around 580 nm. The second specific light transmittance should reflect a reduction of light in the range of 92%-95%. The overall visible light transmittance can be tuned according to the desired use case of the eyewear and can range from about and 80% reduction to about a 90% reduction in visible light.

Ophthalmic lenses and light filters containing special additives that have fluorescence emission in the near infrared region of wavelengths—in order to enhance phototherapy for the human eye when it is exposed to sunlight and artificial lighting.

The invention generally relates to optical filters that provide regulation and/or enhancement of chromatic and luminous aspects of the color appearance of light to human vision, generally to applications of such optical filters, to therapeutic applications of such optical filters, to industrial and safety applications of such optical filters when incorporated, for example, in radiation-protective eyewear, to methods of designing such optical filters, to methods of manufacturing such optical filters, and to designs and methods of incorporating such optical filters into apparatus including, for example, eyewear and illuminants.

An apparatus with time controlled color change indication comprises an apparatus includes a disposable, limited or restricted use product and an oxygen sensing color changeable dye disposed on a portion of the apparatus, the dye being translucent or having a first color upon application and for a defined time thereafter and the dye changing color after exposure to oxygen for the defined time. For example, a packaging for containing a product for human consumption has a portion with a color changeable dye disposed thereon. The dye changes color after being exposed to oxygen for a controlled and predetermined period of time indicating that the product for human consumption should no longer be consume or has decreased in freshness, quality of taste or potency.

The invention relates to an ophthalmic lens comprising: a substrate having a given refractive index; and a coating that minimizes ultraviolet reflections, said coating having a given refractive index and being deposited on a rear face of the substrate. According to the invention, the thickness of the ultraviolet-reflection-minimizing coating is between I μm and approximately 200 μm and the refractive index of the ultraviolet-reflection-minimizing coating is at least 0.15 units less than the refractive index of the substrate. The invention also relates to a method for the production of such a lens.

The optical sheet of the present invention is an optical sheet that includes a polarized layer having a polarization function and a light absorbing layer which is formed of a material including a resin and at least one type of light absorbing agent and absorbs light of a specific wavelength range in a visible light range, and is formed of a laminate in which the polarized layer and the light absorbing layer are laminated. The optical sheet has a first peak having an absorptance peak wavelength P1 in a wavelength range of 460 nm or more and 510 nm or less and a second peak having an absorptance peak wavelength P2 in a wavelength range of 430 nm or more and 680 nm or less in a light absorption spectrum. In addition, in a case where an average transmittance of visible light in the wavelength range of 475 nm or more and 650 nm or less is denoted by T.sub.AVE and a minimum transmittance of visible light in the wavelength range of 475 nm or more and 650 nm or less is denoted by T.sub.MIN, T.sub.MIN/T.sub.AVE is 0.20 or more.

Some embodiments provide a lens including a lens body and an optical filter configured to attenuate visible light in a plurality of spectral bands. Each of the plurality of spectral bands can include an absorptance peak with a spectral bandwidth, a maximum absorptance, and an integrated absorptance peak area within the spectral bandwidth. An attenuation factor obtained by dividing the integrated absorptance peak area within the spectral bandwidth by the spectral bandwidth of the absorptance peak can be greater than or equal to about 0.8 for the absorptance peak in each of the plurality of spectral bands.

A polymerizable composition for optical components according to one embodiment of the present disclosure includes a polyiso(thio)cyanate compound (A) having one or more aromatic rings in one molecule, a polythiol compound (B) having three or more mercapto groups in one molecule, and an acidic phosphate ester compound (C), wherein the content of the acidic phosphate ester compound (C) is 0.1 to 3.0 parts by mass with respect to a total amount of 100 parts by mass of the polyiso(thio)cyanate compound (A) and the polythiol compound (B), and wherein the content of a polymerization catalyst is 0.006 parts by mass or less with respect to a total amount of 100 parts by mass of the polyiso(thio)cyanate compound (A) and the polythiol compound (B).

In an optical material, a transmittance curve satisfies the following characteristics (1) and (2) and a hue in the CIE 1976 (L*, a*, b*) color space satisfies the following characteristic (3), (1) the transmittance curve has a maximum value of a transmittance at a wavelength of from 400 nm to 450 nm or from 520 nm to 570 nm, and a largest value of the transmittance at the wavelength of from 400 nm to 450 nm and a transmittance at from 520 nm to 570 nm are 50% or more, (2) the transmittance curve has a minimum value of a transmittance at a wavelength of from 470 nm to 500 nm, and the minimum value is 40% or less, and (3) in the hue in the CIE 1976 (L*, a*, b*) color space, a* is from 2.5 to 5.5 and b* is from 5 to 25.

Described are visible light absorbing compounds. The compounds have a visible light absorption maximum between 430 and 480 nm and a full width half maximum (FWHM) at the visible light absorption maximum of at least 35 nm and up to 150 nanometers, wherein the compounds are photostable. The compounds are also thermally stable. The compounds substantially mimic the visible light absorbance properties of macular pigment while remaining photostable and thermally stable. The compounds may be used in a variety of articles, including ophthalmic devices.