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| Number | Title | Issue Date |
| 4504127 | Frame front for eyeglasses permitting interchangeability of lenses There is disclosed a frame front for eyeglasses permitting interchanging of lenses without any tool. The frame front comprises a main bridge member connecting lens supports and a median bridge member extending between the lens supports but disconnected th... | 03/12/1985 |
| 4490023 | Arrangement for test mark positioning in spheric perimeters The invention relates to an arrangement for test mark positioning in spheric perimeters particularly for use in ophthalmological examinations. A semi-spherical perimeter screen has a central portion upon which a fixed mark is projected by a double project... | 12/25/1984 |
| 4469416 | Automatic focusing means for an ophthalmoscopic instrument An ophthalmoscopic instrument includes a main optical system, with a focusing optical device, for producing an image of the fundus of an eye on an imaging plane, on illuminating optical system for illuminating the fundus, and a target projecting optical s... | 09/04/1984 |
| 4466713 | Lens holding structure and wire material A spectacle frame wherein each lens is held against a rim by a thin wire for providing a rimless appearance is provided. The spectacle structure includes a wire having at least one enlarged end and a rim for receiving the lens with the enlarged end of the... | 08/21/1984 |
| 4464025 | Spectacle frame In a spectacle frame each lens surround is formed by a relatively rigid rail and a flexible retaining member attached at each end to the rail. To effect this attachment the ends of each rail are formed with two transverse holes through which the flexible ... | 08/07/1984 |
| 4461551 | Portable ophthalmological instrument for selective examination of anterior or posterior regions of the eye The invention contemplates structure for such combinable use of a portable ophthalmoscopy light and a portable stereomicroscope that components are readily convertible to selectively provide ophthalmoscope functions for examination of posterior regions of... | 07/24/1984 |
| 4461548 | Spectacle frame This invention relates to a spectacle frame having metal or plastic bows, which can be forced open beyond their normal open position to bear resiliently on the head of the wearer. Each bow is connected to the rim of the spectacle frame by a hinge, which i... | 07/24/1984 |
| 4461549 | Line adjusting and locking device for eyeglasses A line adjusting and locking device is disclosed for adjusting and locking individual suspension lines of an eyeglass mounting assembly of the type which, instead of temple pieces, has a pair of flexible suspension lines attaching ear pieces of the glasse... | 07/24/1984 |
| 4456346 | Hinge for spectacles The spectacle hinge comprises two parts (3) and (4) in order to insure pivoting of the arm (1) on the frame (2). An intermediate part (5) is fixed on the part (3) by means of a screw (6) and includes a portion (11) forming a cam for engagement with an ela... | 06/26/1984 |
| 4456347 | Method and apparatus for facilitating relaxation A method and apparatus for assisting individuals to achieve the mental and physical relaxation which often characterizes successful meditation. Minute saccadic eye movements are monitored, and the individual is made conscious of any such movement by a sen... | 06/26/1984 |
| 4453808 | Apparatus for detecting the position of a patient's eye in ophthalmologic instruments In an ophthalmoscopic instrument such as an eye fundus camera or an eye refractometer, a device is provided for detecting the position of a patient's eye. The device includes a target projecting system for projecting a light beam to the patient's eye, an ... | 06/12/1984 |
| 4452514 | Optical device for imaging an interior of an eye An optical device for imaging an interior of an eye, especially a retina of the human eye, with the optical device including a front element which acts as an objective and which is adapted to be brought in proximity to the eye, and a single- or multi-elem... | 06/05/1984 |
| 4452516 | Optical grid An optical grid for correcting optical defects in either natural or artificial lenses comprises two perpendicularly arranged series of dark and opaque bars integrally connected to each other in order to form an integral network, all of said bars having a ... | 06/05/1984 |
| 4452515 | Eye testing device An improved eye testing apparatus is provided which permits the operator thereof to precisely and clearly designate certain characters of the eye test pattern. The device includes an external stage, a duplicate test pattern on the stage, and a mask having... | 06/05/1984 |
| 4452517 | Focusing system for eye-ground camera The focusing system of the present invention includes an objective lens facing an eye to be examined, an aperture mirror for reflecting the illuminating light, an aperture stop, a photographing lens, a photosensitive lens and a focusing lens provided betw... | 06/05/1984 |
| 4451127 | Half-reader sunglasses A pair of clip-on sunglass lenses for use with half-frame reading glasses is provided having a pair of sun lenses attached together at their bottom juxtaposed position with a bridge piece this bridge piece having a pivot shaft; a support bracket having a ... | 05/29/1984 |
| 4449798 | Eye fundus observation apparatus In an eye fundus observation apparatus wherein light-intercepting members for eliminating flare are provided at predetermined positions in an illumination optical path which are substantially conjugate with the cornea and the front surface of the crystall... | 05/22/1984 |
| 4449797 | Binocular ophthalmoscope In a binocular ophthalmoscope for indirect observation of an eye to be examined, having an observation unit and an illumination unit connected to the observation unit, wherein the observation unit deflects two closely spaced converging observation beams d... | 05/22/1984 |
| 4448533 | Apparatus for ensuring the quality of printed products Monitoring device for densitometrically evaluating printed sheets with a printed print-monitoring strip includes holding means, a plurality of first densitometers for exclusively measuring full-tone density carried by the holding means at a selective spac... | 05/15/1984 |
| 4448501 | Eye glasses for experimentation and testing Eye glasses for experimentation and testing comprising a frame on which adjustable lens holders can be shifted. They comprise a frontal mounting 1 which is extended downwardly in its central portion in the direction of the patient's nose by a bar 5 of short ... | 05/15/1984 |
| 4448502 | Spreadable bar for eyeglass frames provided with a spring hinge There is disclosed a spreadable bar for eyeglass frames provided with a spring hinge, this latter being fixed to the bar and including a guiding and hinging portion fixed to the eyeglass frame, wherein the guiding and hinging portion is made from a flexib... | 05/15/1984 |
| 4447141 | Vision testing system A vision testing system is disclosed in which a collimated beam of coherent light waves is passed through a transparency of an object such as a grating, a Snellen letter or a portrait to produce the diffraction pattern of the object. Then the light waves ... | 05/08/1984 |
| 4445760 | Pair of eyeglasses An improved pair of eyeglasses is provided which comprises a pair of eyeglass lenses, and a frame having a spaced pair of openable lens holders comprising annular rims substantially around the entire periphery of the lenses and ear retainers connected to ... | 05/01/1984 |
| 4440477 | Method and device for measuring the optical power of the cornea A method and device for measuring the optical power of the cornea is provided. The device comprises a light source to illuminate the cornea, apparatus for forming a profile image of the cornea, apparatus for measuring the actual image distance from the an... | 04/03/1984 |
| 4439025 | Variable circular dual image corneal radius measurement instrument An instrument (20) for measuring the radius of curvature of a cornea (58) of an eye (60) is provided. The instrument (20) includes structure (90, 98, 180) for projecting a reference image (70) onto the cornea (58). The reference image (70) comprises subst... | 03/27/1984 |
| 4439026 | Optical device with two reflecting surfaces A contact glass with two reflecting surfaces for observing the chamber angle of a human eye in proximity of the iris, with a reflecting surface arranged laterally of the eye to be examined and a central reflecting surface to be located in the area of the ... | 03/27/1984 |
| 4439023 | Optical system for ophthalmological instruments A compactly designable optical system for ophthalmological instruments comprising an illumination system so adapted as to illuminate a fundus with rays having passed through a ring slit and been focused on the cornea of an eyeball to be examined, and an o... | 03/27/1984 |
| 4439024 | Eye examining instrument with variable intensity of illumination light In the disclosed eye examining instrument, an eye inspection system forms a first optical path and an eye illuminating system forms a second optical path which begins outside the first optical path and then extends along the optical axis of the first opti... | 03/27/1984 |
| 4437737 | Screen and method of eye examination using same A method for examining the eyes of a patient. A screen for having light and indicia projected thereon from a light and indicia source in the examination of the eyes of a patient having a refraction apparatus over the eyes as in the nature of eyeglasses on... | 03/20/1984 |
| 4436388 | Eye-fundus camera provided with automatic focusing function An eye-fundus camera provides change-over and selection between automatic focusing and manual focusing. The eye-fundus camera includes a projector, a photo-sensor array, a focus controller and an illuminator. The projector projects a first focus mark and ... | 03/13/1984 |
| 4436426 | High-precision reflectometer A reflectometer for precisely measuring the reflectivities of mirrors by performing two sequential measurements each of which is related to a different function of the reflectivities of a reference mirror and the mirror under test. For the first measureme... | 03/13/1984 |
| 4436389 | Ophthalmic instrument having working distance detecting means An ophthalmic instrument such as an eye fundus camera including an illuminating system which projects an illuminating light through a ring-shaped aperture to a patient's eye. There is provided a working distance detecting device which includes a light rec... | 03/13/1984 |
| 4436390 | Ophthalmic instrument having a cross cylinder lens An ophthalmic instrument having a cylindrical test lens and a cross cylinder lens which are adapted to be placed in an examining optical path. The cross cylinder lens is mounted on a lens tube which is rotatably mounted on a swingable lever about a pivot ... | 03/13/1984 |
| 4435051 | Working distance detecting device for ophthalmic apparatus An eye fundus camera is disclosed having a working distance detecting device. The eye fundus camera includes an illuminating system having a ring-shaped aperture through which the illuminating light beam is projected to the eye to be examined through an o... | 03/06/1984 |
| 4432616 | Frame for a pair of spectacles A spectacle frame holds each lens against a rim by a thin wire, providing a rimless appearance. The wire has at least one enlarged end for engagement in one end of the rim. The wire is secured at the other end of the rim for compressively retaining the le... | 02/21/1984 |
| 4432617 | Eye refractive error measuring device A device for measuring the refractive error of an eye in which refractive powers in a plurality of longitudinal directions are simultaneously measured with a high S-N ratio with a high accuracy. A movable chart is provided in a predetermined direction in ... | 02/21/1984 |
| 4431278 | Eye examining apparatus Improvements in an eye examining apparatus of the type having eye fixation mark means, eye refractive power measuring means and control means for moving an image of the fixation mark depending upon the output signal from said measuring means are disclosed... | 02/14/1984 |
| 4429959 | Spectacle mounted hinged monocular or binocular vision aid There is disclosed herein a vision aid for doctors, dentists, visually-handicapped, engineers, mechanics, technicians, and the like. The device comprises a conventional eyeglass frame having mounted thereto a pair of plastic elevating plates and which are... | 02/07/1984 |
| 4426138 | Head positioning device A head positioning device for establishing a selected spacial attitude of the head for portraits, cephalometric x-rays and conventional x-rays in orthodontic procedures, which device includes eyeglasses having a lens frame and a pair of temple arms extend... | 01/17/1984 |
| 4426141 | Bright ring keratoscope A hand-held keratoscope designed to project a bright circular ring on the cornea having a circular glass ring attached to a handle by a retainer ring with the circular glass ring having a flat polished top surface and a frosted inward sloping bottom surfa... | 01/17/1984 |
