79 results about "Corrective contact 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 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.

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.

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 invention belongs to an installing and regulating scheme of a semi-spherical camera above megapixel in a monitoring system, in particular to a correction method and a corrector special for a semi-spherical camera without an auto-focus system. The invention relates to a correction method of a megapixel monitoring camera which is characterized in that the partial spherical surface of an optical spherical cover which is the same with an optical spherical cover arranged outside the camera is intercepted, the area of the partial spherical surface is larger than a visual range of a maximum viewing angle of the camera, the partial spherical surface is arranged in front of the camera in the same distance of the optical spherical cover and a camera lens, the influence of the camera by the optical spherical cover is simulated to regulate the camera, and an ideal image can be obtained by regulating the image of the lens until the image is clear, taking off a correction bracket and installing the spherical cover. The correction method creates a regulating space by simulating the influence of the camera by the optical spherical cover through a corrective lens and is a convenient, reasonable and operable correction scheme, and a simple corrector can be designed according to the correction method to improve regulating efficiency.

An improved reflective/diffractive hybrid wide field Cassegrain telescope is characterized in that a secondary lens is arranged on the left side of a prime lens; a light screen is connected to the back of the secondary lens; a follow-up corrective lens assembly is arranged on the right side of the prime lens; the follow-up corrective lens assembly consists of three sequential lenses that are all made of ordinary materials; the prime lens and the secondary lens are aspheric lenses and merely conicoid lenses, and diffractive optical elements are etched on the lenses, so as to facilitate correcting the systematic aberration. The invention has the characteristics that: firstly, the prime lens and the secondary lens are additionally provided with the diffractive optical elements on the basis of the conicoid, so as to meet the requirements of systematic wide field and improve the imaging quality; secondly, satisfactory imaging effect can be achieved by adopting the special materials or the complicated surface shapes in the design; and thirdly, as the diffractive optical elements in the system are much easier to machine and manufacture, no further requirement on the manufacturing technology is added.

A high-speed photographic printer having an imaging active matrix liquid crystal display with a corrective lens arrangement confronting the imaging active matrix liquid crystal display. The high-speed photographic printer includes a light sealable housing, a lens drawer located between the imaging active matrix liquid crystal display, an operating system that perceives RAM as a hard drive, and a light stream having an orange hue that is conventionally provided by a film negative. Image information is provided to the imaging active matrix liquid crystal display. Customer information associated with the image information is imprinted on the photosensitive material adjacent to the image with an optical marker in the light sealable housing. Such imprinted information is sensed down line from the high-speed photographic printer such as at a cutting station.

An arrangement for light sheet microscopy including illumination optics with an illumination objective for illuminating a sample, located in a medium on a sample carrier aligned with respect to a plane reference surface, with a light sheet. The arrangement further includes detection optics with a detection objective. The arrangement also includes a separating layer system with at least one layer separating the medium from the illumination and detection objectives. The separating layer system is aligned with a base surface parallel to the reference surface and contacts the medium by this base surface. At least one detection corrective lens, for reducing those aberrations occurring as a result of light to be detected passing obliquely through interfaces of the separating layer system, is configured as free-form lens and is arranged between the detection objective and the separating layer system. Alternatively, it also forms the front lens of the detection objective.