Abstract: An eyeball microscope used for observing or photographing epitherial and endothelial cells and likes of a cornea, which is provided with an illuminating optical system for projecting an illuminating light beam onto an object, an observing optical system for observing or photographing an imaging light beam from the object and parallel slits moving across the optical paths of both optical systems, and arranged to scan the object with optical images of certain slits and, at the same time, to lead the imaging beam from the object through the same number of separate slits into the observing optical system, thereby shutting off all unwanted reflecting beams other than the imaging beam.

Abstract: An eyeball microscope used for observing or photographing epithelial and endothelial cells and likes of a cornea, which is provided with an illuminating optical system for projecting an illuminating light beam onto an object, an observing optical system for observing or photographing an imaging light beam from the object and parallel slits moving across the optical paths of both optical systems, and arranged to scan the object with optical images of some of the slits and observe imaging beams from the object through other slits, thereby shutting off all unwanted reflecting beams. In this invention, it is suited for both eye observation and photography by composing the slits of plural groups which are mutually different in design.

Abstract: A goggle type eye movement analyzing device which can be mounted on examinee's head incorporating a pair of eyepieces positioned in front of the eyes. Each eyepiece includes a light source, a target, and a TV camera which receives light reflected from the eye to observe eye movement. A video analyzing device is connected to the eyepieces so that it records and analyzes signals from the TV cameras which can automatically focus on the proximate area of the iris of the eye.

Abstract: A target device used in an eye movement testing device made up of a light group and a refractor. The light group includes a plurality of light sources lined-up side by side behind an window which opens in the front wall of the casing of the testing device, and the refractor is installed to cover the window from the outside of the casing and face the eye to be examined. When the light sources are successively lit on and off, moving virtual images of the light sources are created so that the images which are expanded (to be longer or higher than the light sources) can be seen through the refractor. Thus, the eye movement (nystagmus) induced when the eye follows these types of moving images, is observed.

Abstract: A device for photographing eye movement including a target comprising a plurality of lights arranged in a cross-shape with the center thereof being positioned on the eye axis of an examinee, a TV camera positioned behind the target so that at least a principal point of the TV camera's lens thereof is located on an optical line that passes near the center of the target and the examinee's pupil and a light receiving element set on the optical line so that an eye image is formed on the light receiving element.

Abstract: An eye movement inspection device of goggle shape with a light-shut-out cover which creates a "dark room" in front of eyes. Inside of the goggles, infrared ray radiators (LEDs) illuminate light on the eyes through reflection plates, and micro TV camera catch eye movement which is made when the eyes follow the on-and-off target LEDs arranged in cross shape in front of the eyes. The infrared ray radiator, TV camera, reflection plates and target LEDs are assembled in a single unit, forming a movable eyepiece for each eye, and the eyepieces provided side by side are freely movable horizontally, vertically and in the direction of ocular axis.

Abstract: A contact lens for use in the observation of the interior of an eyeball in ophthalmological examination; the contact lens having one surface for placement in contact with the eyeball and illuminating means movably mounted adjoining another surface of the lens for illuminating the interior of the eyeball.

Abstract: A device for measuring density of photographic transparencies, such as recorded photographic film, which is generally used in a color scanner system in which a photographic film carrying a colored image is scanned in X and Y directions with a light beam, so-called "flying spot", and the transmitted beam is separated into a plurality of component color beams which are then converted into electric signals indicative of densities of the respective component colors, which are then adequately adjusted in magnitude and utilized for preparation of multi-color printing blocks, the device having means for correcting density errors relating to polarization characteristics of the material of the film.

Abstract: A device used, when a color printing block is produced from a color photographic film in accordance with color scanner technique, for compensating a difference in color density between photograph and print and arranged to measure accumulative density distribution of a color signal picked up from the photographic film, just before and after effecting tone control operation as monitoring an optimum tone-controlled color image, and, then, arithmetically process the measured data to obtain the amount of correction to be effected at each density, which is displayed on a cathode ray rube in a form of correction curve and/or printed on a paper in a form of table.

Abstract: A relative density calculation system, principally and preferably used with a color scanner, for detecting a surrounding frame of a photographic transparency to be scanned to produce signal information for application to the color scanner to be utilized in density correction process to remove the density error caused by the presence of the surrounding frame, the frame detection being effected by scanning the transparency with an infrared-ray beam which can pass the deepest colored portion of the transparency but not the surrounding frame material.

Abstract: A device, which is especially useful in color scanning equipment and the like, for supporting a photograhic transparency on a scanning cylinder, in which the cylinder surface is provided with a window and a layer of magnetic rubber surrounding the window, and a trimming mask made of magnetic material held in position by the rubber magnet layer, thereby enabling the support of the photographic transparency to be scanned between the trimming mask and the magnet layer so that the transparency covers the window.

Abstract: An adaptor for use with an objective lens in an ophthalmological microscope comprises of an eyepiece member having an aperture defined therein for containing an impregnating liquid having a refractive index intermediate those of the objective lens and the cornea to be observed and a collar member for supporting said eyepiece member in fixed relation to the objective lens. The improvements wherein said collar member has a passage through which said impregnating liquid is adapted to be introduced into said aperture.

Abstract: 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 pattern movably disposed in the plane of the image and a light source illuminating said pattern.

Abstract: An eyeball microscope used for observing cornea endothelcells and the like, having an objective lens structure including an optical tip member which is formed of a material with lower refractive index than glass in order to avoid the undesired effect of reflection of illuminating light from the front surface of the optical tip member, and an adaptor for stably holding an impregnating liquid between the optical tip member and the cornea; the use of which will result in substantial reduction of reflection from the cornea surface and a corresponding increase in the field of view and resolution.

Abstract: An eye examining device having a television camera and monitor connected thereto, an optical system for magnifying the eye ground or retina and focussing the image on the camera, a cathode ray tube connected with the camera and scanned in synchronism therewith, a light pattern generator connected with the cathode ray tube and monitor for display thereof and an optical system for projecting the image on the cathode ray tube onto the eye ground.

Abstract: A microscope for use in applications wherein the object to be observed may move in a path along the optical axis of the microscope which includes an objective lens, collimating lens for producing a parallel beam, and an imaging lens for focusing the parallel beam to form an image, the objective and collimating lenses being movable with the object being observed.

Abstract: A binomial microscope having two parallel optical systems each including an objective lens, an erect prism and an ocular lens and wherein means are provided for moving each objective in a direction parallel to its optical axis to position the observed image in the vicinity of the object being observed.

Abstract: A binomial microscope having a pair of optical systems with parallel axes, each system including an objective lens, an erect prism and an ocular lens so that the observed image is in the vicinity of the object to be observed.

Abstract: A binomial microscope which includes an auxiliary objective and a pair of parallel optical axes each having objective and ocular lenses and means for moving the objective lenses perpendicular to their optical axes to form the observed image substantially coincident with the object being observed.