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Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 5825457 | Keratometric illumination system A keratometer includes illuminating optics centered along a common measurement axis in alignment with a patient's cornea and with area detection means of the keratometer. A conical reflector is positioned with its apex facing a source of collimated light,... | 10/20/1998 |
| 5793525 | Apparatus for adjusting the viewing angle of a microscope An apparatus for adjusting a viewing angle of a microscope is disclosed. In a preferred embodiment thereof, a bent eyepiece tube includes a prism on a first optical axis thereof for redirecting an object image to a second optical axis of the tube on which... | 08/11/1998 |
| 5779633 | Tonometer air pulse generator An air pulse generator for a non-contact tonometer comprises a bi-directional linear motor drivably connected to a compression mechanism and responsive to an applanation signal for reducing unnecessary air pulse energy delivered to an eye. Upon receiving ... | 07/14/1998 |
| 5754273 | Non-contact tonometer having off-axis fluid pulse system A non-contact tonometer includes a fixation axis intersecting the corneal vertex, and a fluid axis angularly displaced from the fixation axis to form a non-zero angle therewith. A nozzle is axially aligned along the fluid axis for discharging a fluid puls... | 05/19/1998 |
| 5675442 | Microscope lens guide system A microscope lens guide system is disclosed wherein a plurality of lens carriers are magnetically biased to guide rods to ensure rectilinear motion of lenses held by the carriers along an optical axis of the microscope. In a first embodiment, each lens ca... | 10/07/1997 |
| 5671039 | Glare tester A glare tester suitable for use with conventional subjective refractors for testing visual acuity is disclosed. The tester may be fitted to new refractors or retrofitted to existing refractors. The preferred tester is a plastic annular ring with a plurali... | 09/23/1997 |
| 5664888 | Zero clearance bearing A bearing for supporting a load for axial and rotational motion relative to a shaft is disclosed as including an outer shell having a cylindrical inner wall supporting a plurality of circumferentially spaced arcuate bearing pads for engaging the shaft. Ea... | 09/09/1997 |
| 5602640 | Lensmeter accessory A lensmeter accessory is disclosed for supporting and positioning a corneal contact lens in a light path of a lensmeter. The accessory comprises a generally planer body with a tapered slot therein having a slot wall defining a recessed groove for receivin... | 02/11/1997 |
| 5587748 | Joystick override control for an ophthalmic instrument An alignment override control for effecting automatic vertical alignment of a test axis of an ophthalmic instrument with the center of an eye is disclosed. The test axis is associated with optical alignment means of the instrument vertically movable by an... | 12/24/1996 |
| 5561555 | Microscope subassembly apparatus An apparatus and method for aligning the optical elements of a microscope are disclosed wherein a fixture is provided for locating and mounting a plurality of mirrors for reflecting an object image along an optical path to an adjacent eyepiece connected t... | 10/01/1996 |
| 5521756 | Antistatic microscope Microscopes having plastic components such as knobs, covers and eyepiece rings are rendered antistatic by using static charge dissipating plastic materials instead of conventional plastics. Such antistatic microscopes are especially useful in the manufact... | 05/28/1996 |
| 5474066 | Non-contact tonometer An improved tonometer is disclosed having a pachymetric device means for measuring a patient's corneal thickness to allow for correction of the intraocular pressure measurement where the corneal thickness measurement deviates from a calibration mean corne... | 12/12/1995 |
| 5471260 | Joystick for an ophthalmic instrument where vertical movement is controlled by rotating the joystick The disclosure relates to a joystick for positioning a test axis of an ophthalmic instrument relative to an eye of a patient. In a preferred embodiment, the joystick includes an actuator extending therefrom and arranged to alternately engage a pair of mot... | 11/28/1995 |
| 5446274 | Instructive display for assisting in centering an optical path element on a path A polar or vector display provides an operator of an optical instrument with a symbolic instruction regarding the direction and amount of motion required to center an optical element on a chosen path.... | 08/29/1995 |
| 5381196 | Contrast sensitivity tester A device for testing visual contrast sensitivity is disclosed whereby the contrast between a vectographically polarized test symbol and a reference background may be continuously varied by changing the direction of polarization of a polarization analyzer ... | 01/10/1995 |
