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| Number | Title | Issue Date |
| 8164834 | Objective lens for endoscope and endoscope In an objective lens for an endoscope, the full angle of view exceeds 120 degrees, and a most-object-side surface of the objective lens is spherical. Further, the following condition formulas (1) and (2) are satisfied: 0.7 | 04/24/2012 |
| 7885010 | Endoscope objective lens and method of assembly A wide field video endoscope objective and method of assembly the objective including four groups with five lenses, a mechanical housing containing the entire image forming elements, a aperture stop, a centering member and a retainer sleeve. The centering member is ... | 02/08/2011 |
| 7787189 | Objective lens system An objective lens system includes a first lens group having a focal length F1 for focusing, a second lens group, which is a system of magnification variation having a focal length F2, a third lens group for compensation and having a focal length F3 | 08/31/2010 |
| 7672057 | Microscope objective A microscope objective having at least four lenses or groups of lenses and which can be used to improve image contrast. According to the invention, a phase plate, aligned concentrically to the optical axis, can be integrated into and taken out of the air space betwe... | 03/02/2010 |
| 7602556 | Microscope using oil immersion system objective and its microscopy A microscope has an oil immersion system objective and an imaging lens to make observations by charging oil between a cover glass protecting a sample and the most sample-side lens surface. At least one of a plurality of lens units, placed on the image side of the mo... | 10/13/2009 |
| 7446944 | Objective lens An objective lens comprises a housing, an iris diaphragm and a plurality of lens groups. For focusing the objective lens while minimizing the variation of the image angle at least two lens groups are adapted to be moved relative to the housing. The one lens group is... | 11/04/2008 |
| 7371347 | Device for dispensing and observing the luminescence of individual specimens in multi-specimen arrangements The invention is directed to a device for dispensing and observing the luminescence of individual specimens in multi-specimen arrangements, particularly for the examination of biological, chemical or cytobiological assays with high specimen throughput. It is the obj... | 05/13/2008 |
| 7362501 | Microscope apparatus An objective lens can be reduced in diameter, which allows examination inside a specimen such as a living organism with minimum invasiveness and also reduces costs. The invention provides a microscope apparatus including an objective-lens mounting part for removably... | 04/22/2008 |
| 7304793 | Apparatus for examination of chemical and/or biological samples An apparatus for examination of chemical and/or biological samples, comprises a sample support (14) for receiving the samples (16). Further, the apparatus comprises an objective (10) for observation of the sample (16) through a sample sup... | 12/04/2007 |
| 7265920 | Microscope objective and method for manufacturing a microscope objective A microscope objective includes an objective sleeve including a first and a second sub-sleeve. A first lens is received in a first mounting ring, a second lens is received in a second mounting ring, a third lens is received in a third mounting ring, and a fourth len... | 09/04/2007 |
| 7158310 | Objective lens system for microscope An objective lens system for microscope which comprises first and second lens units or first through fourth lens units, and in which the second or third lens unit has a function to correct chromatic aberration within a range from a visible region to a near infrared ... | 01/02/2007 |
| 7133212 | Liquid immersion microscope objective The invention is directed to an immersion microscope objective. This microscope objective contains four lens groups. The first lens group has a focal length of 2.6f–3.1f, where f is the total focal length of the microscope objective. The first lens group contains ... | 11/07/2006 |
| 7085064 | Object lens and endoscope using it An objective lens includes, in order from the object side, a first lens (L1) with negative power, a second lens (L2) with positive power, an aperture stop (AS), and a third lens (L3) with positive power. A lens component located on the image sid... | 08/01/2006 |
| 7054071 | Mireau interference objective lens A Mireau interference microscope is corrected for spherical and other aberrations induced by the beamsplitter and mirror support windows by incorporating a cover glass correcting-objective lens. The support windows for the beamsplitter and mirror have a combined thi... | 05/30/2006 |
| 7046451 | Immersion microscope objective lens To provide an immersion microscope objective lens capable of making a numerical aperture NA larger than 1.45 even if an ordinary oil is used, the objective lens includes, in order from an object, a first lens group, a second lens group, and a third lens group. The f... | 05/16/2006 |
| 7023622 | Miniature microscope objective lens A miniature microscope objective for a miniature microscope array (MMA) includes preferably at least three or four lenses including from object to image a first positive lens, a second positive lens and a third negative lens. The objective has a numerical aperture (... | 04/04/2006 |
| 6994668 | Four-group endoscope objective lens A four-group endoscope objective lens includes, in order from the object side, a first lens group of negative refractive power, a second lens group of positive refractive power, a diaphragm, and third and fourth lens groups of positive refractive power. The second a... | 02/07/2006 |
| 6958863 | Image pickup system The invention relates to an image pickup system comprising an electronic view finder suitable for achieving compactness and having a sufficient viewing angle of field and satisfactory optical performance. The image pickup system comprises an image pickup device, an ... | 10/25/2005 |
| 6956703 | Objective lens for endoscope An objective lens for endoscopes comprises a front lens unit component and a rear lens unit component, between which a stop is located, wherein a front lens unit component comprises, in order from the object side, a first lens having a negative refractive power and ... | 10/18/2005 |
| 6952256 | Optical compensation in high numerical aperture photomask inspection systems for inspecting photomasks through thick pellicles An objective lens system having reconfigurable optical components that enable the inspection of inspection surfaces in the absence of a pellicle or through a thin membrane pellicle, and using the same system, also enabling the inspection of inspection surfaces throu... | 10/04/2005 |
| 6949069 | Endoscope An endoscope assembly is disclosed having a housing adapted to be manipulated by medical personnel, such as a surgeon. An elongated lens tube has one end secured to the housing while an elongated stage is removably secured to the housing so that the stage encompasse... | 09/27/2005 |
| 6950241 | Miniature microscope objective for an array microscope A miniature microscope objective includes at least three or four miniature lenses including from object to image at least a first positive lens, a second positive lens, and a third lens. The numerical aperture (NA) is greater than 0.4 and no more than approximately ... | 09/27/2005 |
| 6914728 | Optical arrangement for microscope objective This invention relates to a microscope having an infinity-corrected objective and providing a flat field of view. The present invention is an optical arrangement that broadly comprises a first lens element having positive power and comprising at least one lens, a se... | 07/05/2005 |
| 6844985 | Endoscope objective optical system An endoscope objective optical system includes a negative first lens group, a positive second lens group, a positive third lens group, and a negative fourth lens group, in this order from the object. The positive second lens group and the positive third lens group a... | 01/18/2005 |
| 6560032 | Liquid immersion lens system and optical apparatus using the same A low magnification liquid immersion objective lens system uses an immersion liquid having a refractive index for the d-line within a range defined by a condition (1) shown below, and has a magnification ଲ and a working distance WDL which satisfy th... | 05/06/2003 |
| 6441966 | Microscope objective lens and microscope using the same A microscope objective lens is constructed with fixed lens units having a numerical aperture NA which is 0.6ࣘNAࣘ0.8 and a magnification ଲ which is 40ࣘଲࣘ63, to observe a sample placed on a sample holding member and covered with a protec... | 08/27/2002 |
| 6400514 | Endoscope objective lens In an objective lens mounted to an endoscope having an enlarging function and enabling a switch to wide-field viewing, a movable lens group is moved so as to adjust the amount of curvature of field such that the image quality at marginal parts of a pictur... | 06/04/2002 |
| 6339507 | Galileo type stereomicroscope and objective lens thereof A Galileo type stereomicroscope permits an observer to change its eye-level by varying a space between an objective lens and a pair of a focal variable magnification lenses. The Galileo type stereomicroscope satisfies following condition: Z>f0 ... | 01/15/2002 |
| 6327101 | Objective lens for variable viewing depth endoscope A variable viewing depth endoscope comprises, successively from the object side, a first lens group G1 having positive refractive power and a second lens group G2 which has positive refractive power and is movable along the optical a... | 12/04/2001 |
| 6320702 | Afocal zoom lens, and microscope having the lens An afocal zoom lens comprising, in order from an object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power and a fourth lens group havi... | 11/20/2001 |
| 6236521 | Objective lens and image pickup device using the same An objective lens including first, second, third, and fourth lens units in order from the object side. The first lens unit consists of a first lens of negative refractive power in the shape of a meniscus with a concave surface toward the image field side.... | 05/22/2001 |
| 6181481 | Objective lens for endoscope An endoscope objective lens comprises, successively from the object side, a first lens group G1 constituted by a first lens L1 made of a planoconcave lens having a concave surface directed onto the image side and a second lens L... | 01/30/2001 |
| 6134056 | Objective lens system for endoscopes An objective lens system for endoscopes comprising a first lens component (L1) which has no or a negative refractive power, a second lens component (L2) which has a convex image side surface and a third lens component (L3)... | 10/17/2000 |
| 6052234 | Viewfinder optical system A viewfinder optical system has a relay lens system. The relay lens system focuses a primary image to form a secondary image. The relay lens is provided at an optical conjugate point with respect to a pupil. A surface of the relay lens system has an optic... | 04/18/2000 |
| 6038079 | Sapphire objective system Objective lenses for endoscopes are made substantially of sapphire. The high refractive index of sapphire results in optical components with shallower curvatures, leading to smaller geometric aberrations, and consequently, fewer components are required to... | 03/14/2000 |
| 5991090 | Afocal zoom system The invention is directed to an afocal zoom system for a surgical microscope. The zoom system has an even number of members and is symmetrically configured.... | 11/23/1999 |
| 5940220 | Microscope objective lens with variable correction of aberrations imparted by transparent body between the specimen and the objective lens Microscope objective lenses are disclosed that comprise an axially movable second lens group for correcting aberrations that arise with changes in the thickness of a cover glass or other transparent body situated between the specimen and the objective len... | 08/17/1999 |
| 5936778 | Objective lens for endoscope In a retro-focus type objective lens for an endoscope, its front-group concave lens system is constituted by two concave lenses, and a predetermined conditional expression is satisfied, so as to secure a sufficient length of back focus, while fully favora... | 08/10/1999 |
| 5898524 | Microscope objective with ball lens and protection plate An objective lens system with protection glass for a microscope and having a numerical aperture of 1.25 and using an immersion oil, having a first, second, third and fourth lens groups, the first lens group being a plano-parallel plate cemented to a hemis... | 04/27/1999 |
| 5889617 | Objective lens systems This invention relates to a microscope objective lens system a part of which is immersed in a liquid to observe a sample present in the liquid. Particularly, this invention provides an apochromat-grade microscope objective lens system which can be machine... | 03/30/1999 |
