Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4673264 | Ophthalmic instrument having focus detecting mark projecting means An eye fundus camera having an automated focus control system which includes a mark projecting system for projecting a focus detecting mark to the retina of a patient's eye to produce a mark image and a photoelectric system for detecting the mark image to... | 06/16/1987 |
| 4669836 | Photorefractor ocular screening system The invention relates to a method and apparatus for detecting human eye defects, particularly detection of refractive error. The invention operates by recording on color film the eye reflex which occurs when eyes are exposed to a flash of light. The photo... | 06/02/1987 |
| 4660945 | Methods and apparatus for accommodation training Methods and apparatus for performing accommodation training under clinical conditions are provided in accordance with the teachings of the present invention. An infrared optometer is employed to measure a patient's accommodation and outputs therefrom are ... | 04/28/1987 |
| 4626089 | Ophthalmic instrument having a focus detecting system An eyefundus camera including an observing and photographing optical system having a focusing lens, a mark projecting optical system for projecting a plurality of mark images on patient's eyefundus. The mark projecting optical system is interconnected wit... | 12/02/1986 |
| 4620318 | Fovea-centered eye fundus scanner An apparatus and method for identifying individuals through the ocular reflectance pattern from the fundus of the eye. A fixation target is provided for positioning and focusing the eye of an individual along its visual axis, being centered on the fovea o... | 10/28/1986 |
| 4607922 | Method for aligning an eye examination instrument with the eye under examination A method for use with an eye examination instrument for automatically aligning the eye under examination with the instrument optical axis. An operator initially aligns the instrument optical axis manually with the eye under examination. A first adjustment... | 08/26/1986 |
| 4597650 | Specular microscope A specular microscope in which the image of a slit aperture of an illumination optical system is formed at an endothelial cell layer of an eye to be examined and including a light intercepting plate having a main aperture and additional apertures adjacent... | 07/01/1986 |
| 4564273 | Retinal camera A retinal camera wherein an auxiliary lens is provided so as to be free to be let into and out of a light path between the position of an image of a retina formed by an objective and a relay lens so that the front eye part of an eye to be examined can be ... | 01/14/1986 |
| 4511227 | Ophthalmic apparatus having means for automatic detection of appropriate position of eye to be examined An ophthalmic apparatus having an automatic detection device of an appropriate position of the patient's eye. A target is projected through an aperture having two openings and through an objective lens to the patient's eye. The target projecting beam is r... | 04/16/1985 |
| 4468104 | Working distance detecting device for ophthalmic instruments A working distance detecting device for ophthalmic instruments has two annular slits in the illuminating system. One of the annular slits has a light-shading portion of a predetermined width. A light-receiving portion is provided around the object lens so... | 08/28/1984 |
| 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 |
| 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 |
| 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 |
| 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 |
| 4405215 | Working position locating means for ophthalmologic apparatus A working position locating device for an ophthalmologic apparatus in which the projected image of a ring slit aperture is offset from the projecting optical axis when the position of the apparatus is being changed so that the ring slit image be seen on t... | 09/20/1983 |
| 4400070 | Focus detecting device for opthalmologic instruments A focus detecting device for an eye fundus camera including a target having a target pattern comprised of a first slit and a second and third slits disposed in parallel with and at the opposite sides of the first slit. The second and third slits are symme... | 08/23/1983 |
| 4365872 | Eye fundus camera having working distance detecting device Eye fundus camera having an illuminating system including a ring-shaped aperture and a ring-shaped mirror for preventing corneal reflection from entering the photographing optical system. The instrument further includes a working distance detecting device... | 12/28/1982 |
| 4364646 | Position adjusting device for ophthalmologic instrument A position adjusting device attached to an ophthalmologic measuring instrument to accurately position an eye to be examined with respect to the ophthalmologic measuring instrument comprises projection means for projecting a predetermined projection patter... | 12/21/1982 |
| 4357079 | Slit pattern projecting apparatus having alignment detecting means A slit lamp device having a slit pattern projecting optical system for projecting an illumination light in a pattern of a slit to a patient's eye. An alignment detecting device is provided for detecting the alignment between the optical axis of the projec... | 11/02/1982 |
| 4266861 | Eye fundus camera An improved eye fundus camera for photographing the fundus of a patient's eye is disclosed. Three separate energy sources are provided which include a first source of a visible light wave length for illuminating the fundus during photography, a second sou... | 05/12/1981 |
| 4264153 | Eye fundus inspection device capable of high speed focusing The disclosed eye examination device focuses on the fundus of an eye. A transparent plate with a black line or a plate with a slit is illuminated and the image of the black line or the slit projected on the eye fundus through an objective lens. A bi-prism... | 04/28/1981 |
| 4257687 | Eye examining instrument with photo-detecting system An ophthalmoscopic instrument having an infrared image converter tube for observation and/or examination of an ocular fundus prior to recording an image thereof provided with a range finding device which assists in establishing a suitable working distance... | 03/24/1981 |
| 4253743 | Eye testing instrument An eye testing instrument is disclosed in which accurate aligning and spacing are obtained relative to the human eye to be tested. At least one indication mark is imaged on the cornea or iris of the eye through an objective lens of the instrument and the ... | 03/03/1981 |
| 4252420 | Ophthalmoscopical apparatus provided with adjustment system An ophthalmoscopical apparatus for carrying out aligning and/or spacing an eye examining instrument is disclosed. The apparatus includes a projection optical system disposed obliquely to the optical axis of the objective lens of the instrument. A beam of ... | 02/24/1981 |
| 4251139 | Eye examining instrument Eye examining instrument is improved with respect to its spacing and alignment relative to a human eye to be examined is disclosed. For the purpose of the spacing and alignment, a non-imaging beam coming from a mark is directed to the cornea of the eye th... | 02/17/1981 |
| 4227780 | Eye examining instrument An eye examining instrument comprises an ultrasonic wave generating source, reflecting members and a receiver. A concave reflecting mirror is provided to direct the generated ultrasonic waves in the direction along the optical axis of the objective lens o... | 10/14/1980 |
| 4196979 | Method and device for detecting distance between eye-examining instrument and eye A method and a device for making the distance between a human eye and an eye-examining instrument coincide with a preset distance. A miniature light source disposed on the image end of an objective lens of the instrument illuminates the eye. The light spe... | 04/08/1980 |
| 4189215 | Method and apparatus for the corneal positioning of a patient's eye A method and apparatus are disclosed for accurately positioning a patient's eyes for an eye examination. An eye positioning beam is oriented transversely to the patient's line of sight. A border surface of the beam facing the patient is positioned at the ... | 02/19/1980 |
| 4180323 | Alignment system and ophthalmic instrument incorporating the same An optical alignment system having a movable portion which contains a centering reticle and range finder, the movable portion is optically coupled to a stationary portion including a field lens to permit the precise positioning of a member relative to an ... | 12/25/1979 |
| 3936844 | Eye-fundus camera easy for alignment of pupil The present invention relates to an improvement of the alignment system for the pupil in an eye-fundus camera. An auxiliary lens is provided so as to be freely inserted and pulled out at an optical path behind an object lens in an optical system for obser... | 02/03/1976 |
