Abstract:
Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for providing improved extended depth of focus lenses. Exemplary ophthalmic lenses can include an optic including a diffractive profile including at least one set of echelettes, each echelette of the set having a different width in r-squared space than any other echelette of the set and the at least one set of echelettes repeating at least once upon the optic.
Abstract:
A method of producing optical components includes providing an initial carrier including cutouts; carrying out a molding process to form transparent optical molded parts arranged in the cutouts of the initial carrier, wherein a molding compound is introduced into the cutouts of the initial carrier and the molding compound is molded and cured; and singulating the initial carrier including the optical molded parts so that separate optical components are formed that respectively include a carrier produced from the initial carrier and including a cutout, and an optical molded part arranged in the cutout.
Abstract:
A headset for virtual reality applications includes an optical element configured to modify light from an electronic display in the headset and to direct the modified light to a user. The optical element may include a Fresnel lens secured to a lens by securing the Fresnel lens to a mold and inserting a casting material into the mold so the casting material forms the lens and a portion of the casting material exists on and past an edge of the Fresnel lens. This encases the edge of the Fresnel lens in the casting material, securing the Fresnel lens to the lens.
Abstract:
Provided is a molded article that has such a shape as to offer a light condensing or light diffusing effect, has excellent mechanical strengths and heat resistance, and has a high thickness deviation ratio. This molded article includes a cured product of a curable composition containing an epoxy compound (A). The cured product has a flexural modulus of 2.5 GPa or more as measured in conformity with JIS K 7171:2008, except for performing measurement on a test specimen having a length of 20 mm, a width of 2.5 mm, and a thickness of 0.5 mm and at a span between specimen supports of 16 mm. The molded article has a thickness deviation ratio (thickest portion thickness to thinnest portion thickness ratio) of 5 or more and offers a light condensing or light diffusing effect. The molded article preferably has a thinnest portion thickness of 0.2 mm or less. The curable composition is preferably a photocurable composition.
Abstract:
Disclosed herein are systems and methods for forming illumination affects through the use differing material disposed around various light sources. In some embodiments LED light sources are used. On the optical surface of the LED light source, lensing is effectuated to control the illumination from the light source. The lensing may be effectuated using maker tools such as 3D printing or micro-machining. Other embodiments of the methods described herein may be effected for shading and other illumination affects. Some embodiments include 3D printing of structures on circuit boards to effectuate lighting designs and control of LED light sources.
Abstract:
An optical warning system comprises a light head that includes a light source emitting light rays from a light-emitting area. The light rays propagate through an optical diffuser to provide a visual warning signal to an observer remotely located from the optical warning system. A Fresnel optic array positioned between the optical diffuser and the light-emitting area is spaced apart from and spatially aligned with the light-emitting area to receive the light rays emitted from the light-emitting area and form a collimated light beam. The Fresnel optic array is fabricated so that it exhibits increased optical transmission efficiency by reducing light lost to scattering in forming the collimated light beam.
Abstract:
A multilayer diffractive optical element includes a first substrate, a second substrate, a first resin layer having a first diffraction grating pattern and interposed between the first substrate and the second substrate, and a second resin layer having a second diffraction grating pattern and interposed between the first substrate and the second substrate. The first resin layer includes a first region provided at a peripheral portion adjacent to a portion of the first diffraction grating pattern. The first resin layer includes a second region provided at a peripheral portion adjacent to the first region.
Abstract:
A linear Fresnel lens sheet includes: a lens layer having a first surface in which a linear Fresnel lens portion, having a number of lens surfaces arranged in a first direction d1, is formed, and a second surface opposite the first surface; and a diffusion layer disposed on the side of the second surface of the lens layer.
Abstract:
A method for fabricating a Fresnel lens or other lens having a structured surface such as refractive and/or diffractive bi-focal or other multi-focal lenses includes press-coating the structured surface with a low or very low refractive index coating material. The coating is sufficient thick to adequately cover the structured surface so that a smooth coating surface with good optical properties is obtained, for example in the case of a Fresnel structure a thickness greater than 1.5 times and less than 5 times the Fresnel structure height, and is cured in situ. A film, e.g., of PET, PC or PU or a film stack, e.g. a TAC/PVA/TAC film stack is prepared and a heat melting adhesive is applied to the side of the film or film stack to be contacted with the coated structured surface of the lens blank. The film or film stack is then laminated to the cured coating.
Abstract:
A tunable optical diffraction grating apparatus, such as but not limited to a tunable Fresnel zone lens apparatus, includes a plurality of symmetric repeating structures (i.e., typically concentric rings) located over a substrate and comprising a material susceptible to a transparent to opaque transition for a designated radiation wavelength. The tunable optical diffraction grating apparatus also includes a means for separately effecting the transparent to opaque transition for each of the plurality of symmetric repeating structures to provide a plurality of transparent zones each comprising a variable first sub-plurality of adjacent transparent symmetric repeating structures alternating and interposed between a plurality of opaque zones each comprising a variable second sub-plurality of adjacent opaque symmetric repeating structures. Also included are a method for fabricating the tunable optical diffraction grating apparatus and a method for operating the tunable optical diffraction grating apparatus.