126 results about "Corrective lens" patented technology

An anterior chamber refractive correction lens (RCL), preferably a custom anterior chamber refractive correction lens (c-RCL) for visual or optical correcting multiple defects or problems of the eye.

This relates to a lens made of donor corneal tissue suitable for use as a contact lens or an implanted lens, to a method of preparing that lens, and to a technique of placing the lens on the eye. The lens is made of donor corneal tissue that is acellularized by removing native epithelium and keratocytes. These cells optionally are replaced with human epithelium and keratocytes to form a lens that has a structural anatomy similar to human cornea. The ocular lens may be used to correct conditions such as astigmatism, myopia, aphakia, and presbyopia.

A deformable, artificial intraocular contact lens for implantation into the human eye to correct normal-vision problems. The lens may be positioned posteriorly from the iris, resting against the anterior surface of the posterior capsule's natural lens. Alternatively, the lens may be positioned in the anterior chamber of the eye. The implanted lens works in conjunction with the cornea and natural lens to provide proper vision, as a substitute for regular contact lens, spectacles, and radial keratotomy. The lens may be designed from a rigid or semi-rigid material. Due to the thinness of the structure, the lens may be rolled and inserted into the eye, minimizing both the length of the corneal incision and the stretching of the cornea.

A lens and a method of making lenses suitable for color blindness correction are disclosed. The corrective lens may be formed of an optically transparent base material, which is tinted to the desired color for correction by immersion in a colorant dye. The color tinted lens is then tinted by a neutral tint dye to render the lens observable as a regular corrective lens. If desired, the dyes may be heated during immersion.

The present invention includes corrective lenses for reshaping the cornea of an eye to improve vision, and methods of designing such corrective lenses. In accordance with various embodiments, the corrective lenses include a central portion, a periphery portion, and a junction region joining the central portion and the periphery portion comprised of a semi-rigid and/or flexible material. The corrective lenses are designed such that localized forces (e.g., lid forces and/or fluid forces in the eye) act on the corrective lenses to draw the periphery portion of a corrective lens to the corneal surface, which causes the junction region and/or central portion to apply pressure on the cornea to change the shape of the cornea. Because different individuals may require a different adjustment to their corneas to correct their particular problem, a corrective lens in accordance with the present invention may be specially designed to reshape the cornea of each user according to his/her particular needs.

The invention relates to a preparation method for an aspherical vision correction lens with controllable peripheral defocus. The preparation method comprises the following steps: (1) through the checking of human eye retina shape or human naked eye peripheral defocusing amount or human eye glasses-wearing peripheral defocusing amount, calculating and judging the conditions needed by forming myopization defocus of the human eye; (2) according to the conditions obtained by the myopization defocus, forming a distribution solution of refractive power of the vision correction lens changed along with the pore diameter; (3) according to the distribution solution of the refractive power of the vision correction lens, making the vision correction lens, so the refractive power distribution in the peripheral area of the whole eye refractive power formed on the retina is greater than that in the center area after the refractive power of the vision correction lens is attached to the human eye, and forming the myopization defocus before falling on the retina; using an aspheric surface to control the surface shape and curvature radius of an optic zone of the vision correction lens, so that the vision correction lens is evenly changed in the aperture direction according to the stated refractive power peripheral defocusing amount, the refractive power is increased along with the increase of the aperture, so the degree-controllable myopization defocus is provided to the human eye.

This invention discloses a novel design for receiving electromagnetic signals broadcasted from at least two of satellite clusters and collected by a single dish antenna. At least two signal feeds are used to feed the signals to a processing circuit. The processing circuit performs signal selection, amplification, and frequency conversion. Corrective lens are used to ensure uniform wavefront of the electromagnetic signals received by the signal feeds located farther away from the focal point of the dish antenna. A convenient adjustment device is provided for adjustment of the relative positions of the signals feeds to the dish antenna.

Ophthalmic lenses providing an extended depth of focus include anterior and posterior faces, wherein at least part of the anterior or posterior face has a curvature based upon the summation of a cubic and/or pentic phase profile, and methods relating to same. The ophthalmic lens may be a contact lens, an intraocular lens (IOL), or other corrective lens.

A method for modifying the shape of a spheric or toric non-corrective lens blank such that astigmatic and peripheral defects are reduced. The outer convex and inner concave sides of the lens are initially designed according to the Gullstrand Formula. Thereafter, a visual axis of the lens is defined relative to a reference axis of the lens blank. In the preferred toric lens, the visual axis of the lens is offset from the reference axis. Once the visual axis is defined, the inner concave surface of the lens is modified so as to improve optical quality in a visual center surrounding the visual axis.

The invention discloses a surface CMOS image sensor camera shooting module. According to the surface CMOS image sensor camera shooting module, a double-Gauss lens without a spherical aberration corrective lens is adopted to serve as a main lens, the face, opposite to the face facing the main lens, of a sensor is designed to be a concave surface and correspond to the main lens, and the two ends of each optical fiber connected with a color filter in a coupling mode are connected with a photo diode and the main lens in a coupling mode to transmit the incident light, so that the incident light led out from the main lens can enter all the optical fibers in a divergent mode and arrive at the corresponding photo diodes after being restored by the corresponding color filters, reflection and crosstalk among pixels of the incident light can be eliminated effectively, the light sensitivity is improved, and the size of the module is contracted while the whole image quality is improved.

A lens barrel which includes an optical system, a support mechanism, a drive correcting mechanism, a retractable lens frame, and a drive retracting mechanism. The optical system includes a corrective lens group and a retractable lens group. The support mechanism movably supports the corrective lens group in a direction perpendicular to the optical axis of the optical system. The drive correcting mechanism is configured to drives the support mechanism so that the corrective lens group moves in a direction perpendicular to the optical axis of the optical system. The retractable lens frame retractably supports the retractable lens group to a first position in which the optical axis of the retractable lens group is offset from the optical axis of the optical system. The drive retracting mechanism is configured to drive the retractable lens frame so that the retractable lens group retracts to the first position.

The present invention is directed to an eyeglass device that has manually variable prisms to correct strabismus; that is, double vision. The variable prism eyeglasses consist of an eyeglass frame that holds two primary rings in position and provides baseline reference points for alignment. Prism lenses and corrective lenses fit inside the primary rings and allow the two prism lenses of each primary ring to rotate independently and to hold the corrective lens fixed in place relative to the primary rings. Detent channels on the upper surface and lower surface of the primary rings are the means by which the prisms are adjusted. Each prism lens is moved and positioned via a prism lens pin located in the base of each prism lens. The prism lens pins fit into the detents in the detent channels of the primary ring. The detent selected determines the amount of corrective power the prisms will produce.

The invention discloses an optical system for a refractive/diffractive telescope, mainly applying in the astronomical observation, imaging of objectives at long distance, etc. The optical system comprises a corrective lens, a primary reflector and a sub-reflector in the sequence from object space to image space. The corrective lens of optical element in front of the system is a binary diffractive lens of optical element. Light beam from the object space passes through the corrective lens of the binary diffractive element, and irradiates on the primary reflector, and then is reflected to the sub-reflector by the primary reflector, finally finishes imaging after being reflected to the imaging plane by the sub-reflector and. Both the primary and the sub-reflector of the optical system adopt spherical reflectors. The processing, inspection and assembly of the reflectors become much easier, obviously reducing the manufacturing cost and improving the processing efficiency. The binary diffractive corrective lens can be produced in batch through the molding of optical plastics, which can further reduce the manufacturing cost.

Acoustic touch apparatus comprising a substrate having first and second surfaces capable of propagating surface acoustic waves, the second surface comprising a touch region and the first and second surfaces coupled via a rounded connecting surface; at least one acoustic wave transducer on the first surface; and at least one reflective array on the first surface. The transducer is capable of transmitting or receiving waves to and from the reflective array. The substrate and reflective array can acoustically couple waves between the first and second surfaces. The substrate has a border region on the first surface adapted to hide the transducer and reflective array and preclude distortion of waves propagating over a window in the border region. The border region may have a borderlayer except at the window and a corrective lens is used proximate the window, or the border region comprises discolored glass except at the window.

This invention relates to a method for estimating the optical power of corrective lenses in a pair a eyeglasses worn by a spectator, characterized in that it comprises the following steps: - acquire two consecutive images of this spectator's face located in front of a means for acquiring these two images, one of these images being acquired with eyeglasses and the other without, - calibrate one of the two acquired images with respect to the other, - identify the position of the iris of each eye in each image, - evaluate the size magnification or size reduction of each imaged iris, and - estimate the optical power of the corrective lenses based on the evaluated magnification or reduction.

A system and method for adjusting display settings to allow a user that requires prescriptive eyewear to view images on the display without the eyewear. The user provides input on which value for each display setting is optimal for the user's viewing experience. Once the optimal values are determined, the present invention adjusts the settings of the display means. The user is then able to view the text or images without wearing his/her prescriptive eyewear. The present invention optimally manipulates at least one of the following settings to achieve this aim: brightness, contrast, clock/phase, sharpness, colour, resolution, aspect ratio, gamma setting, and any other settings of the display means that are available to adjust the display so that a user may view the image to his or her satisfaction. The display means may be a monitor, or any other means that displays text or images.

Eyewear is equipped with at least one lens and at least one pinhole aperture. Lenses and apertures may be used in place of or in combination with one another, and may be disposed in or on full frame, half frame, wire frame or rimless eyeglasses. The lens may be a corrective lens. Pinhole apertures may have a diameter no greater than about 3 mm, and a diameter/thickness ratio is no less than about 66.7%.

The method of the invention for manufacturing a correctable lens for glasses from an injectable thermo-plastic polymer material, or other moldable polymer, consists in:

• • molding a glass blank (2) provided with the contour of the corrective lens;
  • assembling the lens blank with a peripheral piece (3) having the same internal radius of curvature as that of the glass blank (2), so as to compose a lens blank (1);
  • grinding and polishing the internal face of the lens blank (1) to obtain the desired ocular correction;
  • separating the glass blank (2) from the lens blank to obtain the corrective lens ready for assembly with the frame.

A vision enhancing device for a person having macular degeneration of the retina, comprises a lens and a light diverging surface on the lens that symmetrically diverges away from the eye at an angle relative to an optic axis to redirect incident light away from the optic axis outwardly toward an un-diseased region of the retina. The light diverging surface can be a smooth surface, which can be a continuous curved surface, and can be a diverging conical surface. The lens can be an eyeglass lens, contact lens, intraocular lens, telescopic lens, correction lens, or magnification lens. A light diverging insert having a conical surface and, optionally, an end surface can be used in a lens for redirecting light to the un-diseased region of the retina.

An improved low vision device for macular degeneration victims comprising any one of the following elements; (1) two reflecting elements permanently affixed to the frame, (2) reflecting elements mounted to the frame along their outer edges, (3) a single unified lower reflecting element or frame, (4) a corrective lens pivotally attached to a reflecting element in such a way that it may be removed or rotated away, (5) a shield covering the frame that blocks ancillary light from entering the eye, (6) a shield attached to a reflecting element that blocks light from entering the eye between the upper and lower reflecting elements, and (7) a handheld design featuring two reflecting elements for use with only one eye.