4 results about "Bicone" patented technology

A broadband omni-directional bicone antenna. The antenna can comprise conductive surfaces of conical voids provided within a solid dielectric structure. The outside surface of the solid structure can support a radio frequency (RF) lens geometry operable for beam forming. The beam forming can modify the elevation pattern of the electromagnetic radiation from the bicone antenna. The solid dielectric structure may be machined or molded from a single piece of material. The conical voids provided within the solid structure can be metallized to provide conductive bicone radiators. The outer surface beam shaping lenses can be zoned or continuous and can provide elevation patterns with increased gain, cosecant squared falloff, or various other patterns. The beam shaping lens may be formed from any low-loss dielectric. Alternatively, the lens may be formed from a less dense material such as dielectric foam that can support radial conductive beam forming vanes.

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing a piggyback lens which in combination with the cornea and an existing lens in the patient's eye redirects and / or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The piggyback lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the piggyback lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the piggyback lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.

[Task] A display device and a head-up display device will be provided, which can further increase the uniformity. [Solution] A display device 10, which emits a display light L representing an image, is provided with a light source 19 which emits an illumination light IL, a third lens 53 which collimates the illumination light IL from the light source 19, surfaces 51i, 51o, 52i, 52o which are distributed on the light axis of the illumination light IL which has been collimated by the third lens 53 and are positioned on the light axis of the collimated illumination light IL, and a display surface 18a which receives the illumination light IL distributed by the surfaces 51i, 51o, 52i, 52o and emits the display light L, and is provided in an orientation in which it is inclined with respect to the light axis of this emitted display light L. One of the surfaces 51i, 51o, 52i, 52o is a Fresnel lens surface, which is provided in an orientation in which it runs along the display surface 18a.One of the surfaces 51i, 51o, 52i, 52o other than the Fresnel lens surface is a cylindrical lens surface or a biconical lens array surface.

The invention discloses a front flat type free ring curved surface myopia correction lens for XR glasses and a manufacturing method, the front flat type free ring curved surface myopia correction lens comprises a lens base body, the lens base body is provided with a lens front surface and a lens rear surface, and the lens front surface is arranged to be an optical plane; the rear surface of the lens is arranged to be a free ring curved surface, the free ring curved surface is arranged to take a biconical curved surface as a substrate and superpose XY polynomial high-order terms, and the free ring curved surface is used for synchronously correcting defocus, astigmatism, field curvature and distortion in a full view field; according to the lens, the front surface optical plane is adopted to achieve accurate attachment to a display module, the rear surface is of a free ring curved surface structure, a lens-eye combined optical model and a global optimization algorithm are combined, cooperative correction of full-view-field aberration is achieved, and the peripheral view definition and wearing comfort are remarkably improved.