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| Number | Title | Issue Date |
| 5491757 | Field tester gaze tracking using content addressable memories to improve image data analysis speed A field test apparatus and method is disclosed in which gradual movement of the head supporting chin cup is used to maintain a centered relation between the eye being tested and the trial lens frame holding the required prescription for optimum vision of ... | 02/13/1996 |
| 5140352 | CCD camera and method for fundus imaging A method and apparatus are disclosed for converting the 35 mm image from a conventional fundus camera into a size suitable for recording by a conventional solid state CCD module. The CCD camera connects to the fundus camera using a bayonet attachment. The... | 08/18/1992 |
| 4947474 | Mechanism of observation and recording operation on an object An eye, having a rear opening opposite the pupil and is supported on a microscope slide, with the rear opening downward, and secured thereto with glue, surrounding the rear opening. An observation component including a video camera and a microscope is pos... | 08/07/1990 |
| 4933756 | Eye fundus camera An eye fundus camera of this invention has a light source for illuminating the fundus of an eye to be tested, an illuminating optical system for projecting illuminating beam from the light source to the eye fundus, and a light receiving optical system for... | 06/12/1990 |
| 4856883 | Method of and device for seeing objects including jump-like movements of an output image about a stationary main optical axis Seeing of objects is performed through an optical system with a stationary main optical axis with deviating an output image of the system away of the stationary main optical axis by jump-like movements with randomly distributed time intervals.... | 08/15/1989 |
| 4854302 | Video equipped endoscope with needle probe An instrument for penetrating a small opening for closely examining an interior target. The instrument has a narrow needle probe that forms an image of the target and carries it into a main housing. In the housing, a miniature solid-state imager receives ... | 08/08/1989 |
| 4852184 | Method and system for spectacles frame image processing and recording A spectacles frame image picked up by a TV camera is displayed on a TV monitor, and pattern data representing a frame and its image data are recorded in a spectacles frame data-base by setting an image region to be cut out using a cursor. At this time, a ... | 07/25/1989 |
| 4845641 | Method of forming a synthetic image in simulation system for attachment of spectacles A method of making a synthetic image in a simulation system for attachment of spectacles, in which a synthetic image of image pickup data of a spectacles frame taken in at a first magnification and image pickup data of a person's image derived from an ima... | 07/04/1989 |
| 4748502 | Computer vision system based upon solid state image sensor A system for computer vision in association with a computer comprises a solid state image sensor or optic ram, a lens, a clock circuit for sequentially addressing the image sensor, and an edge detect circuit for detecting edges in the output bit stream of... | 05/31/1988 |
| 4739410 | Superimposed analog video image on plotted digital field tester display In an eye field tester, a vidicon camera observes the eye being tested and relays the resultant low light level image to the periphery of a digital display. The digital display contains both an image of the eye on the periphery and the plot of the visual ... | 04/19/1988 |
| 4730260 | Method for eyewear simulation and a device for its practice An image of a person who has taken off his/her spectacles is taken on a video camera; then video signals for the image of the person are A/D-converted and stored into a video memory device as the digital signals; thereafter display signals are produced by... | 03/08/1988 |
| 4669466 | Method and apparatus for analysis and correction of abnormal refractive errors of the eye The invention contemplates instrumentation to aid in performing refraction-corrective surgery on the conrea, (1) by determining the topography of the anterior surface of the cornea, the determination being in the form of digitized data entered into comput... | 06/02/1987 |
| 4661847 | Technique for monitoring magazine readers A technique is provided for determining which pages of a selected magazine are read by a person acting as a test subject. Optic lenses are included which provide images of the magazine to a superimposing device. An image of the reader's eyes is also provi... | 04/28/1987 |
| 4648052 | Eye-tracker communication system A system for computer vision comprises a source of digitized video signals and a frame encoder circuit connected to the source of digitized video signals. The frame encoder encodes threshold crossing events at at least two threshold levels and stores enco... | 03/03/1987 |
| 4370033 | Eyeball examining device An eye examining device having a television pickup camera, an optical system for magnifying the eye ground or retina and focussing the image on said camera, a television monitor connected to the camera to display the image of the retina and an optical pat... | 01/25/1983 |
| 4230124 | Output display for B-scan ultrasonoscope A B-scan ultrasonoscope which can be used for scanning tissue, for example the human eye, and displays the shape and character of the tissue. The echo pulses received are converted into digital signals whose amplitudes represent the reflectivity of the ti... | 10/28/1980 |
| 4194217 | Method and apparatus for in-vivo spectroscopic analysis Method and apparatus for the spectroscopic analysis of a specimen in which the specimen is irradiated with a narrow band of monochromatic light over a range of wavelengths, the light reflected from the specimen is scanned to generate a signal representati... | 03/18/1980 |
| 4075657 | Eye movement monitoring apparatus An apparatus is disclosed for testing the eye movements of a viewer in response to visual stimuli, such as an advertisement, displayed on a screen. One camera cooperates with a light source to detect eye movements indicated by a light beam deflected off t... | 02/21/1978 |
| 4019813 | Optical 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 |
