摘要:
A lens meter according, including: a unit body provided with eyeglasses support means for supporting eyeglasses; a left measurement optical system provided in the unit body and provided with a left light-emitting optical system that emits measurement light to a left eyeglass lens of the eyeglasses and a left light-receiving optical system that receives the measurement light passing through the left eyeglass lens with a CCD (light-receiving element); a right measurement optical system provided in the unit body and provided with a right light-emitting optical system that emits measurement light to a right eyeglass lens of the eyeglasses and a right light-receiving optical system that receives the measurement light passing through the right eyeglass lens with the CCD. (light-receiving element); and an arithmetic control circuit that performs operation to the optical characteristics of a pair of the eyeglass lenses based on an output of the CCD (light-receiving element).
摘要:
A nonlinear optical chromophore having the formula D-null-A, wherein null is a null bridge including a thiophene ring having oxygen atoms bonded directly to the 3 and 4 positions of the thiophene ring, D is a donor, A is an acceptor, and the oxygen atoms are further substituted with a fluorinated group comprising at least three fluorines is described. Some examples of fluorinated groups comprising at least three fluorine atoms are 2,2,2-trifluoroethyl; 2,2,3,3,3-pentafluoropropyl; 2,2,3,3,4,4,4-heptafluorobutyl; 2,2,3,3,4,4,5,5,5-octafluoropentyl; 3,3,4,4,-5,5,6,6,7,7,8,8,8-tridecafluoro-1-octyl; 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8 -pentadecafluorooctyl; 1-trifluoromethyl-2,2,2-trifluoroethyl; 1-trifluoromethyl-2,2,3,3,3 -pentafluoropropyl; 2,3,4,5,6-pentafluorobenzyl; and (2,3,4,5,6-pentafluorophenyl)ethyl.
摘要:
A method and apparatus for increasing the depth of focus of the human eye is comprised of a lens body, an optic in the lens body configured to produce light interference, and a pinhole-like optical aperture substantially in the center of the optic. The optic may be configured to produce light scattering or composed of a light reflective material. Alternatively, the optic may increase the depth of focus via a combination of light interference, light scattering, light reflection and/or light absorption. The optic may also be configured as a series of concentric circles, a weave, a pattern of particles, or a pattern of curvatures. One method involves screening a patient for an ophthalmic lens using a pinhole screening device in the lens to increase the patient's depth of focus. Another method comprises surgically implanting a mask in the patient's eye to increase the depth of focus.
摘要:
A lens having a substrate, a metal layer uniformly covering one side of the substrate, a first dielectric layer uniformly covering the metal layer, and a second dielectric layer gradiently covering only a portion of the first dielectric layer.
摘要:
The invention provides a lens with a refractive surface in which a spiral pattern is used to distribute the distance and near vision power on the lens' surface.
摘要:
There is described a method for forming lenses having substantially no optical power. The method includes forming, via in situ polymerization, a layer of non-uniform thickness of an optically clear, high scratch-resistant polymeric material on the convex surface of the lens. The lenses provided by the method are characterized by having maximum thickness in the central region of the lens and gradually diminishing thickness radially towards the periphery of the lens.
摘要:
The invention provides generally a new type of organic electrochromic Near Infrared (NIR)-active materials capable of absorbing and attenuating the light in the NIR region around 1550 nm and forming thin films on electrodes for variable optical attenuator (VOA) applications. They have utility in planar VOA devices. The materials are ruthenium complexes. Unsymmetrical complexes having two different substituents are disclosed, where one substituent is more electron-donating than the other. Complexes which are dimers or trimers (symmetrical or unsymmetrical) are disclosed, as are polymeric complexes. Crosslinked polymeric complex films are also disclosed.
摘要:
An ultraviolet (UV) light filtration system, method and device for converting a pair of standard eyeglasses to a pair of sunglasses. A sheet of static cling vinyl is treated to impart UV-absorbent characteristics to the sheet. The sheet is preferably cut by a computerized cutting machine to the size and shape of the eyeglass lenses. Alternatively, the sheet may be molded in an injection mold to the desired size and shape. The vinyl sheet has a thickness that permits a static electricity charge on a surface of the sheet to hold the sheet on the eyeglass lenses.
摘要:
A multifocal contact lens structured to provide simultaneous distant and near vision includes a transparent lens body having an inner concave surface and an outer convex surface. The lens body has an aspherical central portion structured to provide distant vision and an adjacent annular spherical portion structured to provide near vision. The aspherical central portion, and annular spherical portion may be provided on the inner surface of the lens. In an alternate embodiment, a spherical central near vision portion and an annular aspheric distance vision portion may be employed. The spherical and aspherical portions merge in a gradual manner to avoid undesired liner of demarcation therebetween. A method of manufacturing a multifocal contact lens structured to provide simultaneous near and distant vision may include providing a contact lens blank having an outer surface and an inner surface and creating a generally spherical configuration in the inner surface, converting a center portion of the spherical concave inner surface into an aspherical configuration, and creating a generally spherical convex annular configuration in the outer surface. The method may be modified to provide the alternate embodiment.
摘要:
A lens is provided comprising a substrate, a first metal layer comprising a first metal material uniformly covering an outer surface of said substrate, a first dielectric layer comprising a first dielectric material uniformly covering said first metal layer, a second metal layer comprising a second metal material gradiently covering only a portion of said first dielectric layer and a second dielectric layer formed of a second dielectric material gradiently covering said second metal layer.