摘要:
A multi-focal spectacle lens is presented having far distance, intermediate distance, and near distance vision correction, in which the lens includes a progressive addition surface with a progression of optical power. The lens further includes a multi-order diffractive surface relief structure with an optical add power. The multi-order diffractive structure reduces chromatic aberration as compared to a conventional diffractive structure of equivalent optical power. The lens may also include a wavefront splitting device diffractive structure for generating multiple optical powers simultaneously. When the progressive addition surface and the multi-order diffractive surface relief structure are in optical communication an overall progression of optical add power may be provided by the combination of the progressive addition surface with the multi-order surface relief diffractive structure.
摘要:
Techniques and assemblies for steering light rays are described. An electro-optic prism configured to provide controllable steering of solar rays includes a first electrode including multiple substantially parallel linear electrodes positioned on a first substrate and a reference electrode positioned on a second substrate. An electro-optic material is positioned between the first electrode and the reference electrode. In one implementation, a wavelength selective filter is in optical communication with the electro-optic prism. The wavelength selective filter is configured to substantially eliminate selected wavelengths from solar rays before the solar rays are received by the electro-optic prism. In another implementation, a chemical compound is configured in the assembly to convert ultra-violet photons included in the solar rays into visible photons.
摘要:
A lens including a flexible refractive optic having a fixed refractive index, an electro-active element embedded within the flexible refractive optic, wherein the electro-active element has an alterable refractive index, and a controller electrically connected to the electro-active element wherein when power is applied thereto the refractive index of the electro-active element is altered.
摘要:
The present invention relates to ophthalmic systems comprising a selective light wavelength filter, wherein said selective filter provides improved contrast sensitivity.
摘要:
Embodiments of the present invention relate to a multifocal lens having a mostly spherical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens.
摘要:
Embodiments of the present invention relate to a multifocal lens having a diffractive optical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens.
摘要:
Aspects of the present invention provide multifocal lenses having one or more multifocal inserts comprising one or more diffractive regions. A diffractive region of a multifocal insert of the present invention can provide a constant optical power or can provide a progression of optical power, or any combination thereof. A multifocal insert of the present invention can be fabricated from any type of material and can be inserted into any type of bulk lens material. A diffractive region of a multifocal insert of the present invention can be positioned to be in optical communication with one or more optical regions of a host lens to provide a combined desired optical power in one or more vision zones. Index matching layers of the present invention can be used to reduce reflection losses at interfaces of the host lens and multifocal insert.
摘要:
Several devices for determining a distance of an object a user of an electro-active lens is looking at are presented. Once the distance is determined, the devices may alter the optical power of the electro-active lens to ensure that the object is correctly focused. Optical range finding is a possible means for carrying out this task. An active rangefinder may emit optical radiation from a transmitter directed at the object. The optical radiation may then be reflected off the object. The reflected optical radiation may then be received with an appropriate receiver. The received optical radiation may then be processed by appropriate circuitry to determine a distance to the object. A passive rangefinder works without a transmitter. Instead, an appropriate receiver receives ambient sources of light from the object. The received light may then be processed by appropriate circuitry to determine a distance to the object.
摘要:
Aspects of the present invention provide multiple-layer (multi-layer) composite lenses comprising two or more materials and methods for making the same. A multi-layer composite lens of the present invention can use multiple surfaces (internal or external) to form optical elements that can contribute to a total desired add power. The multiple contributing optical elements can be aligned so as to be in optical communication to form multiple stable vision zones to enhance optical performance and the vision experience of the wearer. Distributing the total desired add power across multiple appropriately aligned optical elements that are in optical communication with one another can reduce the total distortion of the lens, minimize the number of optical discontinuities introduced, can reduce optical power jump as experienced by the wearer's eye when traversing any discontinuity, and can reduce the visibility of any introduced optical discontinuity as perceived by an observer looking at the wearer.
摘要:
A nose bridge for a fashion spectacle lens frame adapted for housing electro-active lenses is presented. The nose bridge may include a body which may further include electronic components. The nose bridge may further include a connecting element for connecting the electronic components with the electro-active lenses for altering optical properties of the electro-active lenses. The nose bridge may be adapted to fit a variety of frame sizes, shapes, and styles as well as lenses of a variety of sizes and shapes.