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| Number | Title | Issue Date |
| 7369306 | Image reversion system, ancillary ophthalmoscopy module and surgical microscope The invention relates to an image reversion system (500) which enables an image reversion and beam transposition of a plurality of observation beam paths (503a, 503b, 504a and 504b) to be carried out sim... | 05/06/2008 |
| 7199951 | Decentering optical system, holding structure of decentering optical system, and optical apparatus using the same The decentering optical system comprises a decentering prism and a holding component. The decentering prism has two or more positioning portions at positions which sandwich an effective diameter of an optically functional surface held by the holding component. The h... | 04/03/2007 |
| 7184229 | Optical switch element An optical switch element (1) for switching an optical path (2) comprises a fixed reflection element (4), which requires strict preciseness in positioning and angle-setting, and a movable optical path parallel displacement element (3A), w... | 02/27/2007 |
| 7111950 | Method for forming a metallic mirror surface on a receiving surface A method for forming a metallic mirror surface on a receiving surface is shown. The method comprises the steps of: cleaning the underlay surface; spraying on the receiving surface an activating treatment agent solution wherein the activating treatment agent solution... | 09/26/2006 |
| 6967774 | Microscope for the wide-angle viewing, in particular for eye surgeries Provisions must be made in surgery microscopes for eye surgeries through the selective adding of optics so that a non-reversed and erect-standing image can be produced including that of the fundus of the eye. A device for the image reversion is fastened on the micro... | 11/22/2005 |
| 6945657 | Surveying instrument A surveying instrument includes a sighting telescope having an objective lens and an eyepiece; an erecting optical system functioning so that an image formed by said objective lens is viewed as an erect image through the eyepiece; and a light shield device, position... | 09/20/2005 |
| 6930705 | Image search device An endoscopic apparatus has an objective optical system arranged in a rigid endoscope for forming an image, a first image re-forming optical system for re-forming a part of the image once formed through the objective optical system on an image pickup surface of a fi... | 08/16/2005 |
| 6885403 | Color separation beam splitter for projectors A color separation beam splitter for projectors is provided, which comprises a plurality of prisms connected with each other and three optical interference filters having different wavelength ranges respectively formed on side surfaces of the plurality of prisms. Th... | 04/26/2005 |
| 6690513 | Rhomb interleaver Interleavers are a useful tool in wavelength division multiplexing (WDM) to separate a signal with closely spaced channels into two signals, e.g. odd and even ITU channels, each with twice the channel spacing. Alternatively, two signals with a large chann... | 02/10/2004 |
| 6522487 | Optical apparatus A first surface of an optical component has a lens function of converging the transmission light from a light source. A second surface reflects the transmission light, converged by the lens function of the first surface, towards an end face of an optical ... | 02/18/2003 |
| 6404552 | Projection type display device A projection type display device constructed so that light source beams via a polarization beam splitter are separated of colors by a color separating/synthesizing optical system and enter light valves disposed for every color light, the light beams exiti... | 06/11/2002 |
| 6377409 | Prism and viewing optical system using the prism Disclosed is a prism having a light incident surface, a light emerging surface, and at least one light reflection surface. The light incident on the light incident surface is reflected, inside the prism, by the light reflection surface, and emerged from t... | 04/23/2002 |
| 6344039 | Device for eliminating parallax of stereo microscopes during refractive laser surgery A device for eliminating decentration error due to parallax during ophthalmic laser surgery comprises a stereo microscope having a first ocular and a second ocular and an objective lens for viewing a patient's eye, a laser for projecting a laser beam at a... | 02/05/2002 |
| 6331918 | Light interception structure for an automatic focus detection surveying instrument A light interception structure for an automatic focus detection surveying instrument includes a telescopic optical system having an objective optical system and an ocular optical system, a beam splitting optical element which splits object light transmitt... | 12/18/2001 |
| 6304395 | Viewing optical instrument having roof prism and a roof prism A viewing optical instrument has a roof prism which is provided with a pair of reflection surfaces intersecting at a nominal face angle of 90°, wherein the pupil is split by an edge line of the reflection surfaces of the roof prism. The reflection surfac... | 10/16/2001 |
| 6256156 | Convergence tube A convergence tube for stereomicroscopes in which both observation beam paths are inclined relative to one another at an angle of convergence and image inversion elements are provided in both observation beam paths. Four planar reflectors R1 | 07/03/2001 |
| 6236504 | Method and device for adjusting eye range by means of displacements of prisms and ocular lenses A method is designed to adjust the distance between the central axes of two ocular lenses of an optical instrument. The method involves the use of a link mechanism to actuate two movable prisms and the two ocular lenses of the optical instrument to move r... | 05/22/2001 |
| 6229645 | Polarization selecting optical element using a porro prism incorporating a thin film polarizer in a single element A Porro prism and a light polarizer are combined in a single optical element termed a Hendrix Prism. The design provides retro-reflection of incoming light of a predetermined polarization in a direction anti-parallel to the direction of light incidence, w... | 05/08/2001 |
| 6198574 | Polarization preserving optical systems Polarization preserving optical systems for use in deviating plane polarized beams through preselected angles without changing their linear state of polarization. The optical systems have a variety of applications and are particularly suitable for use in ... | 03/06/2001 |
| 6018420 | Binocular having hand-vibration compensation system A binocular is provided with a pair of telescopic optical systems. Each of the pair of telescopic optical systems has an objective lens, a pair of positive and negative compensation lenses, an erecting system, and an observing optical system. The negative... | 01/25/2000 |
| 5838504 | Prism and real image type view finder A prism is provided having a surface on which light is made incident, surfaces at which light is reflected and a surface from which light is emitted. The prism includes an uneven surface portion provided on at least one of the incident, reflecting or emit... | 11/17/1998 |
| 5699186 | Multi-fold optical magnifier for use in image manifestation apparatus A multi-fold optical magnifier includes a prism with four reflecting surfaces positioned to direct light from an inlet to an outlet, and a lens positioned adjacent the prism outlet to receive light from the prism. An aspheric surface of the lens is in the... | 12/16/1997 |
| 5668674 | Reflecting prism and a finder system having a reflecting prism A double Porro prism having an incident surface, an exit surface, and a plurality of reflecting surfaces for internally reflecting light rays from the incident surface to the exit surface. The plurality of reflecting surfaces having a final reflecting sur... | 09/16/1997 |
| 5625486 | Real image type viewfinder optical system A real image type viewfinder optical system configured so as to allow observation, through an eyepiece, of an image of an object which is formed by an objective, and inverted by image inverting optical members in both a vertical direction and a horizontal... | 04/29/1997 |
| 5610771 | Non-deviating prism with continuously variable dispersion A non-deviating prism system (40) and method provides continuously variable dispersion of light with limited deviation. Light is dispersed in a prism arrangement which includes a selected liquid filled in the spaces between adjacent prism elements (41, 51... | 03/11/1997 |
| 5598296 | Prismatic telescope optical system A prismatic telescope optical system is available to include one of a plurality of optical systems different in magnification from one another, each having an objective system, an image erecting prism system, and an eyepiece system. Each of plurality of o... | 01/28/1997 |
| 5535060 | Optical stereoscopic microscope system A stereoscopic microscope system is adapted for vitrectomy eye surgery. A conformer lens positions the eye being operated upon and an aspherical lens system, adjacent the conformer lens, produces an inverted image. That image is reinverted by a prism syst... | 07/09/1996 |
| 5528426 | Laser block beam splitter for microscopes A laser block beam splitter system for microscopes comprising a main body housing, a laser safety filter, two optical trains, a pair of beam splitters, and three viewing stations. The beam splitters provide an image along both an axial beam path and a tra... | 06/18/1996 |
| 5491528 | Real image mode finder optical system having an objective lens integrated as a prism with a reflective surface A real image mode finder optical system includes an objective lens, an image inverting optical member for erecting an object image formed by the objective lens, and an eyepiece for observing the object image. The objective lens has a reflecting surface an... | 02/13/1996 |
| 5469293 | Dual-path optical system Pseudoscopic, dual-path optical systems employing plane mirror arrangements for cross coupling the optical paths to reverse the left and right perspectives of object space are provided. Advantageously, the cross coupled path arrangements permit the system... | 11/21/1995 |
| 5438456 | Optical stereoscopic microscope system An optical stereoscopic microscope system is adapted for eye surgery and includes a conformer lens which fits over the eyeball being operated upon. A wide-angle aspherical lens system includes two convex-concave lenses and magnifies the image from the con... | 08/01/1995 |
| 5375013 | Optical low pass filter An optical low pass filter including a phase grating for obtaining useful picture image characteristics by provision of preferable low pass effects for each of wave form zones about the spatial frequency components beyond Nyquist limit which are required ... | 12/20/1994 |
| 5173958 | Beam distributor for laser-to-optical fiber application A beam distributor apparatus employing an eccentrically mounted retroreflector prism is driven to revolve about a central axis by a motor/encoder to direct an input beam to a plurality of optical fibers in sequence. The retroreflector prism possesses the ... | 12/22/1992 |
| 5134519 | Periscope switchover mirror system A switchover mirror system for a periscope has an even number of reflection surfaces for enabling an observer to view a first scene in a first sight direction forward of the observer and an uneven number of reflection surfaces for enabling the observer to... | 07/28/1992 |
| 5130845 | Real image viewfinder A real image viewfinder with an objective having movable focusing lens(es) and a field lens at the end thereof furtherest from the field of view, an eyepiece lens and image inverting optics, preferably in the form of a Type II Porro prism wherein the real... | 07/14/1992 |
| 4909614 | Variable magnification finder A finder optical system provided separately from a photographic lens having a variable magnification portion comprises, from front to rear, an objective lens unit having a first variable magnification portion, a Porro prism and an eyepiece lens unit havin... | 03/20/1990 |
| 4838671 | Stereo microscope and stereo changer Behind of the front objective, in the region of both parallel axes of the beams of rays of the microscope is disposed a slewable optical prismatic body with two plane parallel front faces and two opposite inclined, parallel refractive pairs of faces. In a... | 06/13/1989 |
| 4652094 | Binocular microscope including a detachable optical deflecting unit A binocular microscope arrangement that can be used for both straight line and angular viewing. The microscope arrangement includes three main units: an objective lens unit, a deflection prism unit, and an ocular tube unit. Mounting Structures are provide... | 03/24/1987 |
| 4626081 | Binocular alignment A binocular viewing device including means for resiliently mounting a prism seat to the binocular body within an enclosed chamber consisting of at least three elongated fasteners spaced about the periphery of the prism seat, with means associated with eac... | 12/02/1986 |
| 4547047 | Microscope tube system A microscope optical system wherein a light is made to enter a beam splitter of a Jentzch type prism through another surface than the front surface of the beam splitter in order to form a Jentzch type binocular optical system to be small and simple and to... | 10/15/1985 |
