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Class 351/205 - Objective type


Subclass of Class 351 - Optics: eye examining, vision testing and correcting
Definition: Subject matter including instruments for examining the eye
No. of patents: 750
Last issue date: 03/06/2012


                    19  
NumberTitleIssue Date
4307944Microscope
A microscope which is suitable for slit-lamp microscopy of the fundus without contact lens, stereo-chronoscopy, and laser photo-coagulation in the fundus and the anterior segment of the eye, is provided having two telescopic sections, the first section ha...
12/29/1981
4293200Visual faculty testing apparatus
Visual faculty testing apparatus is proposed to facilitate contrast sensitivity assessment. Existing procedures are limited and involve the presentation to a subject of a target of which the overall contrast is varied to determine the minimum level at whi...
10/06/1981
4270842Optical system for forming an image of the retina
An optical system for forming an image of the retina of an eye which is to be examined. The optical system has two groups of lenses which cooperate to form the image. The first lens group is in contact with the cornea of the eye of the patient via the eye...
06/02/1981
4265519Wide-angle ophthalmoscope
A wide-angle indirect ophthalmoscope that enables an operator to view the retina from the posterior pole to the equator as a single image. The ophthalmoscope has an observable field that can include the entire retina. The ophthalmoscope includes optical f...
05/05/1981
4248506Eye fundus observing optical system
An eye fundus observing optical system which can perform the diopter correction of the inner focus type by the construction that a relay lens system for forming a second fundus image from a first fundus image formed by an objective lens is constituted by ...
02/03/1981
4222634Wide angle objective for examination of the eye
A wide angle objective intended especially for visual and photographic examination of the fundus of the eye. Each of the separate lens elements which together make up the objective is so designed that one surface of the element provides the desired refrac...
09/16/1980
4219257Ophthalmic endothelial microscope
An ophthalmic endothelial microscope assembly capable of determining a predetermined dimension, namely the thickness, of the cornea portion of an eye of a living patient. The present assembly includes a casing having an illumination directing means includ...
08/26/1980
4200362Ophthalmoscope with uniform illumination
Apparatus for viewing an eye fundus through a contact lens has an illuminating element that illuminates the fundus through the sclera. The illuminating element includes at least one fiber optic bundle with an exit facet for placement contiguous with the s...
04/29/1980
4181407Apparatus for automatically testing vision by phase measurements
Apparatus for automatically testing a patient's vision includes a target, at least one lens, and an eyepiece serially aligned along one optical path. A motorized drive circuit moves the target or lens to selectable positions along the optical path in resp...
01/01/1980
4172639Apparatus for determination of corneal astigmatism
Apparatus for use with an operating microscope employed in observing the cornea of the human eye, for example in connection with cornea transplant operations. A plexiglass tube surrounds the objective of the microscope and is fed with light from a suitabl...
10/30/1979
4134647Contact lens for examining the interior of the eye
The inner walls of the eye, i.e., the fundus, are examined in panorama with an optical lens comprising a truncate paraboloidal mirror and a corneal contact objective lens. While held in contact with the cornea, the fundus is observed by projecting a light...
01/16/1979
4067646Eyeground inspecting contact lens
An eyeground inspecting contact lens adapted to be disposed in contact with the cornea of an eye to be inspected, in order that an illuminating light may be directed to the fundus of the eye so as effectively to illuminate the same for the observation of ...
01/10/1978
4065208Ophthalmoscope
An ophthalmoscope for allowing an observer to clearly and easily view the retina of a patient's eye. The ophthalmoscope has a hollow body member with an objective portion attached to one end thereof for placement over the patient's eye and with an ocular ...
12/27/1977
4063805Ophthalmic measuring instrument
A measuring instrument particularly adapted to making accurate measurements of portions of the eye and contact lenses is characterized by a split mirror system in which one mirror is fixed and a second mirror rotates upon movement of handle-pointer associ...
12/20/1977
4061423Illumination system for ophthalmoscope
Disclosed are improvements in an illuminating system for an ophthalmoscope of the type employing transillumination through the sclera of the eye. One or more fiber optic bundles convey light from a source to the sclera. Each fiber optic bundle has a physi...
12/06/1977
4056310Method and device for ophthalmoscopy
A method and device for ophthalmoscopy for observing fundus oculi by a binocular ophthalmoscope through a contact lens arranged in contact with an eyeball to be observed, said method and device for ophthalmoscopy enabling to observe the fundus by a multip...
11/01/1977
4033679Gonioscope
A gonioscope for viewing the angle of the trabeculum and the drainage angle and related structures comprising a lens having a cylindrical surface and formed at its front end with four inclined facets narrowing toward the front free end thereof. The lens i...
07/05/1977
4021102Auto-refractometer
An auto-refractometer according to this invention comprises a light beam source for producing a measuring ray wherein beams from a pair of invisible infrared ray emission diodes are alternately flickered, and real images of the beams are converged on resp...
05/03/1977
4019813Optical apparatus for obtaining measurements of portions of the eye
An optical apparatus for obtaining one or more measurements of portions of an eye having means for providing a narrow beam of light through the eye, a lens system that collects light that is reflected from the eye and forms an image on the surface of a te...
04/26/1977
4015898Upright wide angle stereo ophthalmoscope
An ophthalmoscope-microscope having an object lens at one end of a housing and an inverting, reversing and separating prism provided in the housing in the optical axis of the object lens, a binocular viewer attached to the housing and being aligned with t...
04/05/1977
4003642Optically integrating oculometer
An improved oculometer yielding simplified data accumulation and reduction techniques because of the use of a cylindrical lens system which optically integrates the light reflected from the eye being studied. The use of the cylindrical lens system and a l...
01/18/1977
3972602Auxiliary lens holder device for use with a keratometer
A lens holder device for mounting an auxiliary lens on a keratometer, comprises a generally circular disc which engages and mounts on the keratometer closely adjacent the front face thereof. The disc has a vertically oriented slot therein which is of a si...
08/03/1976
3966310Pupillometer and method of use thereof
Apparatus for observing reaction of the pupil of an eye includes a first light source for generally illuminating the eye, and a second light source which may be selectively actuated to direct light to the eye in the area of the pupil. The reaction of the ...
06/29/1976
3963329Small pupil binocular indirect ophthalmoscope
A binocular indirect ophthalmoscope of the type having a central reflecting prism and a pair of adjustable oculars. The instrument may be used in the examination of eyes having either normally dilated or small pupils. Small pupil capability is achieved by...
06/15/1976
3945712Operating magnifier and miniature opthalmoscope
A magnifier and miniature ophthalmoscope which may be worn over the eyes of a surgeon and which permits use without removal from the head as either an ophthalmoscope or as a magnifier. A first optical path of the instrument includes a magnifying objective...
03/23/1976
3936161Ophthalmoscope illumination arrangement
This application discloses an ophthalmoscope illumination arrangement including a bulb mounted in a special bulb carrier which is adapted to cooperate with the ophthalmoscope chassis so as to automatically position the bulb for best illumination. The bulb...
02/03/1976
3936160Interferometer for the measurement of wavefront sections of general imaging systems including the human eye
An interferometer method for measuring aberrations in a lens system by analysis of a Fourier transform pattern generated by the lens system and the embodiment of this principle for the measurement of aberrations in the human eye and in the general imaging...
02/03/1976
3932030Illuminating device in an ophthalmometer
In an ophthalmometer comprising a chart plate, an illuminating device for illuminating the chart plate, a viewing optical system having an optical measurement adjust member for viewing therethrough the chart image projected by the illuminating device upon...
01/13/1976
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