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Class 351/207 - Having spurious reflection blocking


Subclass of Class 351 - Optics: eye examining, vision testing and correcting
Definition: Subject matter including means for blocking undesirable
No. of patents: 47
Last issue date: 02/14/2012


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NumberTitleIssue Date
8113656Ophthalmic photography apparatus
A monocular image of a fundus of an eye under examination is captured via a photographic stop for monocular photography, and two stereographically viewed images are captured with a parallax via two photographic stops for stereographic photography that are decentered...
02/14/2012
8100531Ophthalmoscope including an electronic shutter
An opthalmoscope for examining a patient's eye includes an illumination device for generating an illumination beam Illumination imaging optics image the illumination beam onto the eye and a scanning device scans the illumination beam over the eye. The opthalmoscope ...
01/24/2012
8066374Optical system for a fundus camera
The invention is directed to an optical system for a fundus camera for reflection-free opthalmoscopy having a beam path with refractive and reflective optical elements which are used substantially in common for illumination and observation or recording. An imaging m...
11/29/2011
7445337Ophthalmic image sensing apparatus
An area having a diameter in which a peripheral area of an eye fundus image is covered with a mask is displayed on a monitor. When a region which may be abnormal is found in the vicinity of a boundary between the mask and the eye fundus image during image viewing, t...
11/04/2008
7354153Fundus camera
A fundus camera capable of favorably obtaining a photographed fundus image and an observation fundus image, has an optical system having an objective lens and a diaphragm at a conjugate position with a pupil relative to the lens, for performing visible photographing...
04/08/2008
7347548Method and apparatus for measuring a retinal sublayer characteristic
Methods and systems are provided for measuring a retinal sublayer characteristic of an eye. A plurality of axial scans are performed over an area of the retina of the eye. Reflections are measured during the axial scans to determine a plurality of sets of reflection...
03/25/2008
7338167Retinal imaging system
A retinal imaging system includes a light source and optics which receive light from the light source and which transmit the light to produce a beam that is substantially convergent. The beam penetrates a lens of an eye and diverges following penetration of the lens...
03/04/2008
7333636Funduscopic image processing unit and method
To determine the presence or absence of an aperture mask in a funduscopic image output by a fundus camera, and to combine the funduscopic image with an aperture mask image formed in an aperture mask-forming section so as to correspond to a determination result. When...
02/19/2008
7306336Fundus observation apparatus
An apparatus for observing a fundus of an eye of an examinee has an observation optical system having an image-pickup element which obtains a time-series fundus image, a display part which displays the obtained fundus image on its monitor as a moving image, a determ...
12/11/2007
7305467Autonomous tracking wireless imaging sensor network including an articulating sensor and automatically organizing network nodes
A wireless integrated network sensor (WINS) system is provided that integrates articulating tracking systems with WINS network components including visual or infrared sensors and imaging devices to enable precise tracking and targeting of objects moving through a se...
12/04/2007
7290881Opthalmologic apparatus
There is provided an ophthalmologic apparatus that prevents ghost light from generating. In the ophthalmologic apparatus, on an optical path commonly used for an eye fundus illumination optical system and an image taking optical system including an image taking diap...
11/06/2007
7252381Ophthamoscope
An ophthalmoscope has illuminating optics (10) for projecting a beam of light into an eye under examination and imaging optics (14) for creating an image of said eye for viewing by a user. The imaging optics comprises an objective lens system (16
08/07/2007
7241011Fundus imaging system
An apparatus (220) for obtaining a scanned image of an eye has a reference locator for pupil alignment apparatus along an optical axis. A pupil profiling apparatus for obtaining an outline of the pupil has a pupil profiling light source (176), a sensor...
07/10/2007
7234815Optical viewing device having an apparatus for partial reduction of the illumination intensity
The invention concerns an optical viewing device which incorporates a spectral filter to partially reduce the intensity or wavelength(s) of light transmitted to a specific region of a specimen which may be a human eye. The reduction in light intensity or wavelength ...
06/26/2007
7216981Ophthalmologic apparatus
There is provided an ophthalmologic apparatus that prevents ghost light from generating. In the ophthalmologic apparatus, on an optical path commonly used for an eye fundus illumination optical system and an image taking optical system including an image taking diap...
05/15/2007
7198367Fundus imaging apparatus and fundus imaging method
A fundus imaging apparatus comprises: a beam emitter which simultaneously emits a first laser beam and a second laser beam having a different wavelength from the first beam; an irradiation optical system having a beam scanner which scans the emitted first and second...
04/03/2007
7174094System and method for reflex-free coaxial illumination
A system is provided for reflex-free coaxial illumination that includes an objective lens group having an optical axis. An illumination source is axially disposed from the objective lens. The illumination source provides at least one light beam. The light beam is di...
02/06/2007
7110582Method for determining binocular balance and disorders of binocularity of an individual or clinical groups of individuals
A method for identifying particular disorders of the eyes is disclosed. Initially, an image of the eyes in digital format is taken by a reflex photometer and the image provided to a computer programmed to run a plurality of algorithms that are associated with each t...
09/19/2006
7102818Microscope having a system for reflecting in illumination
The invention concerns a (stereoscopic) surgical microscope having a system for reflecting in illumination in which the illumination beam path (5) is switched into the microscope's main beam path via a deflection element (1) whose diameter exceeds the ...
09/05/2006
7048379Imaging lens and illumination system
An imaging system and method for imaging an object, where an objective lens directs light to the object, a coupling lens receives light reflected from a surface of the object and transmitted through the objective lens, and focuses the reflected light as an image of ...
05/23/2006
7001019Image observation apparatus and system
An image observation apparatus is constructed to project image information displayed on an image display device for displaying the image information, onto a retina of an observing eye by a display optical system, thereby permitting an observer to observe the image i...
02/21/2006
6928193Fundus imaging
Degradations of the image acquired by a fundus camera, including those due to intraocular defects are reduced by digitizing the image, taking an FFT of row and column image data, correlating the FFTs of the rows and of the columns to obtain resultant row product vec...
08/09/2005
6914721Prism construction for simultaneous zero-degree and oblique illumination of a stereoscopic surgical microscope
The invention concerns an apparatus for simultaneous zero-degree and oblique illumination for an optical viewing device, in particular a stereoscopic surgical microscope, which contains a shiftable prism combination (3) for deflecting a first illumination sub...
07/05/2005
6605081Systems and methods for imaging corneal profiles
Systems, methods and apparatus for generating images of portions of the patient's eye, such as the anterior surface of the cornea. The methods and apparatus of the present invention are particularly useful for directly imaging the profile of the ablated r...
08/12/2003
6490365Eye image pickup device
An eye image pickup device includes an object lens; an image pickup element, such as a CCD serving as an image pickup unit; a light shielding portion; and a light guide unit. The light shielding portion shielding one part of the pickup light path is coaxi...
12/03/2002
6088470Method and apparatus for removal of bright or dark spots by the fusion of multiple images
A reliable method and apparatus for illuminating and imaging eyes uses multiple light sources producing multiple images of a subject each created under illumination by different illuminators. A composite image of the subject is formed by selecting pixels ...
07/11/2000
6059773Method and apparatus for measuring properties of the eye using an virtual object
A technique for evaluating the topography of a cornea in which a virtual object of a keratoscope pattern isured. The topography system includes a structured light source to create the keratoscope pattern or another diagnostic pattern, an optical assembly ...
05/09/2000
5873832Method and apparatus for measuring properties of the eye using a virtual image
A technique for evaluating the topography of a cornea, which utilizes a virtual image of a keratoscope pattern. The topography system includes a structured light source to create the keratoscope pattern or another diagnostic pattern, an optical assembly t...
02/23/1999
5506634Fundus illumination apparatus formed from three, separated radiation path systems
Apparatus for illuminating the fundus of an eye with a scanned sample beam of radiation. An embodiment of the present invention is an optical system which includes three, separated radiation path systems--a tilted illumination path system, a decentered ob...
04/09/1996
5300964Fundus camera
A fundus camera includes a light source for observation, and an illiminating optical system having a predetermined illiminating optical axis. The light source for observation illiminates a fundus of an eye via the illiminating optical system. The camera f...
04/05/1994
5250966Ophthalmic photographing apparatus having a displacement measurement unit
An ophthalmic photographing apparatus comprises an illumination optical system for illuminating an eye to be tested, a viewing optical system having a variable magnification optical system for viewing the illuminated eye to be tested, and a photographing ...
10/05/1993
5247318Fundus camera for photography using a fluorescent agent
The fundus camera of this invention for taking photographs by fluorescence comprises an exciter filter 7 in an illuminating optical system 1, and a barrier filter 16 in a photographic optical system 2. A member 11 for eliminating harmful reflected light f...
09/21/1993
5118179Opthalmological photographing instrument
An ophthalmological photographing instrument has photographing means for imaging the fundus of an eye to be tested every time a photographing switch is actuated, and a barrier filter to be inserted into a photographing optical path when a fluorescence pho...
06/02/1992
4715704Light trap for surgical operation microscopes
A microscope for examinations and surgical operations on the eye, having provision for projecting onto the eye a hollow beam of illuminating light, the beam having a dark center portion of the same diameter as the pupil of the eye. Thus the surgeon may ha...
12/29/1987
4449798Eye fundus observation apparatus
In an eye fundus observation apparatus wherein light-intercepting members for eliminating flare are provided at predetermined positions in an illumination optical path which are substantially conjugate with the cornea and the front surface of the crystall...
05/22/1984
4443075Stabilized visual system
A stabilized visual system for directing a beam of energy, such as a laser beam, to a specific selected location in an eye and maintaining the beam in the selected location regardless of eye movements. The system employs a fundus illumination and monitori...
04/17/1984
4439024Eye examining instrument with variable intensity of illumination light
In the disclosed eye examining instrument, an eye inspection system forms a first optical path and an eye illuminating system forms a second optical path which begins outside the first optical path and then extends along the optical axis of the first opti...
03/27/1984
4423932Eye fundus observing and photographing optical system
An eye fundus observing and photographing optical system has an objective lens including a main positive lens component and at least one positive lens component provided at that side of the main positive lens component which is adjacent to an eye to be ex...
01/03/1984
4422736Eye fundus camera having ring slit mask in illuminating system
An eye fundus camera including an illuminating system having two apertured masks. One of the masks has a pair of coaxial ring-shaped slits and located with respect to the objective lens in conjugate with the cornea of the patient's eye, whereas the other ...
12/27/1983
4322137Fundus observation and photographing optical system
In a fundus observation and photographing optical system having an objective lens for forming a primary image of the fundus of an eye to be examined, an apertured mirror disposed rearwardly of the objective lens and obliquely with respect to the optic axi...
03/30/1982
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