Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7679842 | High performance catadioptric imaging system A reduced size catadioptric objective and system is disclosed. The objective may be employed with light energy having a wavelength in the range of approximately 190 nanometers through the infrared light range. Elements are less than 100 mm in diameter. The objective... | 03/16/2010 |
| 7660048 | Wide angle lens with large aperture The invention is aimed at providing a lens having a wider angle of view, increased relative aperture, and higher quality of images. To achieve this technical object, there is a wide-angle lens with a large relative aperture, which contains an aperture diaphragm and ... | 02/09/2010 |
| 7656592 | Optical system having aberrations for transforming a Gaussian laser-beam intensity profile to a quasi-flat-topped intensity profile in a focal region of the optical system An optical system is configured for projecting an image having a quasi-flat-topped intensity profile from a laser-beam having a Gaussian intensity profile. The optical system includes a diffraction limited lens for focusing the laser beam and one or more optical ele... | 02/02/2010 |
| 7626771 | Optical system and optical apparatus including the same An optical system in which a maximum value of a height from an optical axis of a paraxial marginal ray closer to an expanded side than a point of intersection between an optical axis and a paraxial chief ray, includes a lens unit Lr including at least one refractive... | 12/01/2009 |
| 7538957 | Photographing optical system and image pickup apparatus including the same A photographing optical system includes at least one of a positive lens and diffractive optical element being provided closer to an object side of the system than an intersection P of a light axis and paraxial chief ray, and a negative lens, provided closer to an im... | 05/26/2009 |
| 7511897 | Projector optical system A projector optical system for forming a real image by projecting an image of a display element is constituted by, sequentially from a projection side, an aperture diaphragm; and a first lens group having positive refractive power and having, in the interior thereof... | 03/31/2009 |
| 7508599 | Optical system with wavelength selecting device The object is to provide an optical system with a wavelength selecting device. According to one aspect of the present invention, an optical system with a wavelength selecting device includes, in order from an object along an optical axis, an objective optical system... | 03/24/2009 |
| 7492531 | Apochromatic condenser The invention is directed to an optical system with reduced chromatic aberration, particularly for use in microscopes for imaging the light source in the aperture diaphragm of a condenser. According to the invention, an adapter assembly is associated with a collecto... | 02/17/2009 |
| 7463432 | Objective operating in the infrared An objective for use in a night sight device has a front lens group and a rear lens group. The lenses of the front lens group have essentially equal diameters, whereas the lenses of the rear lens group have increasingly large diameters starting from the front end of... | 12/09/2008 |
| RE40563 | 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 ... | 11/04/2008 |
| 7411736 | Image detection method and image detecting apparatus An image detection method includes steps of transferring image information in which, information of an object image on a sample (object plane) is transferred to a detection plane (image plane) of an imaging element via an optical system which includes a negative ref... | 08/12/2008 |
| 7407334 | Lens for photographing system and camera assembly utilizing the lens In a lens group which is disposed forward of a photographing device and which includes at least a ceramic lens that is combined with a glass lens, wherein a conjugate surface of the photographing device by a combined surface between the ceramic lens and the glass le... | 08/05/2008 |
| 7405889 | Optical system and imaging system incorporating it The invention relates to an optical system that is capable of providing a zoom lens having improved image-formation capability with a reduced number of lenses, and fabricating a slim yet high-performance digital or video camera. The optical system comprises a cement... | 07/29/2008 |
| 7385770 | Imaging lens system An object is to provide an imaging lens system which can achieve reduction of the size and weight while maintaining the high optical performance. The imaging lens system of the present invention comprises, in order form an object side to an imaging surface side: a f... | 06/10/2008 |
| 7381339 | Increased yield of cubic crystalline optical elements by crystal orientation Increased yield of optical elements from cubic crystal rods, such as made of calcium fluoride, is made possible by orienting the optical elements for supporting the propagation of light along one of the , , or < 2 1 1> alternative crystal... | 06/03/2008 |
| 7365916 | Aspherical lens and optical instrument using the same An object is to provide an aspherical lens having compactness in dimension, large degree of freedom in design, and good optical performance, with increasing in productivity, and lowering production cost. The aspherical lens constructed by a substrate member A and a ... | 04/29/2008 |
| 7365920 | Four-piece lens assembly A four-piece lens assembly, from the object side, comprises: an aperture, a first lens, a second lens, a third lens, a fourth lens, a flat parallel glass and an image plane. The first lens is a double convex positive lens. The second lens is a double concave negativ... | 04/29/2008 |
| 7349164 | Imaging system and optical components thereof An imaging system includes a first optical component serving as an image forming part and a second optical component disposed in front of the first optical component relative to an incident light wave. The second optical component and first optical component are joi... | 03/25/2008 |
| 7342731 | Wafer scale lens and optical system having the same Provided are wafer scale lenses having a diffraction surface as well as a refractive surface, and an optical system having the same. The wafer scale lens includes a lens substrate, a first lens element formed on the object side of the lens substrate, having a positi... | 03/11/2008 |
| 7339743 | Very-high aperture projection objective A very-high aperture, purely refractive projection objective is designed as a two-belly system with an object-side belly, an image-side belly and a waist (7) situated therebetween. The system diaphragm (5) is seated in the image-side belly at a spacing... | 03/04/2008 |
| 7324293 | Wide-angle lens system A wide-angle lens system includes a negative front lens group and a positive rear lens group, in this order from the object. The negative front lens group includes a negative first sub-lens group and a positive second sub-lens group, in this order from the ob... | 01/29/2008 |
| 7324285 | Optical elements and imaging optics comprising them The optical elements are made from an opto-ceramic material that is characterized by high density, transparency for visible light and IR, high refractive index, high Abbe number and outstanding relative partial dispersion. Mixed oxides are sintered to obtain the opt... | 01/29/2008 |
| 7324169 | Projection optical system, projection television, and method of manufacturing lens included in projection optical system Provided are a projection optical system, a projection television, and a method of manufacturing a lens included in the projection optical system. The projection optical system includes lenses for projecting color beams onto a screen. A color filter layer, absorbing... | 01/29/2008 |
| 7319563 | Zoom lens system, imaging device and camera An object is to provide a high-resolution zoom lens system which has fewer lens elements and therefore, can be retracted into a compact form when not in use; and the zoom lens system, in order from the object side, comprises a first lens unit G1 having negati... | 01/15/2008 |
| 7317582 | Zoom lens, video enlarging/projecting system, video projector, rear projector, and multivision system The present invention includes three or more lens groups. These are arranged in the order of a first lens group (11) that has positive refractive power and a second lens group (12) that has negative refractive power, as seen from the side having the lo... | 01/08/2008 |
| 7312847 | Refractive projection objective for immersion lithography A purely refractive projection objective suitable for immersion micro-lithography is designed as a single-waist system with five lens groups, in the case of which a first lens group with a negative refracting power, a second lens group with a positive refracting pow... | 12/25/2007 |
| 7301707 | Projection optical system and method A refractive projection optical system for imaging a first object into a region of a second object comprises a plurality of lenses disposed along an imaging beam path of the projection optical system; wherein the projection optical system is configured to have a num... | 11/27/2007 |
| 7289279 | Lithographic objective having a first lens group including only lenses having a positive refractive power A projection objective includes a first lens group (G1) of positive refractive power, a second lens group (G2) of negative refractive power and at least one further lens group of positive refractive power in which a diaphragm is mounted. The first lens... | 10/30/2007 |
| 7286297 | Lens system utilizing light-transmitting ceramic and camera assembly using lens system utilizing light-transmitting ceramic In a lens system in which a plurality of lenses are combined while the lenses are disposed in such a manner that their optical axes are aligned with each other, at least one ceramic lens is used which is produced using a light-transmitting ceramic as a lens material... | 10/23/2007 |
| 7286295 | Microoptical compound lens An apposition microoptical compound lens comprises a plurality of lenslets arrayed around a segment of a hollow, three-dimensional optical shell. The lenslets collect light from an object and focus the light rays onto the concentric, curved front surface of a cohere... | 10/23/2007 |
| 7286303 | Macro lens The invention discloses a macro lens that takes a retrofocusing function for the purpose of downsizing. The macro lens employs a floating mechanism to cover a wide photographing range from the equi-magnification to the infinity, and especially, attains a great imagi... | 10/23/2007 |
| 7283314 | Zoom lens and image pickup apparatus including the same At least one exemplary embodiment is directed to a zoom lens which includes, in order from an object side to an image side, a first lens unit with a negative refractive power, a second lens unit with a positive refractive power, and a third lens unit with a positive... | 10/16/2007 |
| 7283702 | Method and apparatus for optimizing the target intensity distribution transmitted from a fiber coupled array Encircled far field energy is substantially increased by modifying the near field energy distribution of radiation from each fiber in an emitting array. Each beamlet output from a fiber is modified to have a generally uniform cross-sectional energy distribution, usi... | 10/16/2007 |
| 7271964 | Projection display device for multimedia and wall display systems A front projection display device includes an optical engine including an illumination system, an imaging system, and projection optics. The projection optics include a first lens group of negative refractive power that has at least one aspheric surface. The project... | 09/18/2007 |
| 7262922 | Immersion microscope objective lens An immersion microscope objective lens includes, in the following order from an object side to an image side, a first lens group having positive refractive power as a whole, including a first lens component composed of a first meniscus lens and a second meniscus len... | 08/28/2007 |
| 7256949 | Optical system with wavelength selecting device The object is to provide an optical system with a wavelength selecting device. According to one aspect of the present invention, an optical system with a wavelength selecting device includes, in order from an object along an optical axis, an objective optical system... | 08/14/2007 |
| 7253973 | Image-pickup optical system An image-pickup optical system includes, from the object side to the image side, a first lens unit having positive optical power, an aperture stop, and a second lens unit. A diffractive optical element and a lens composed of extraordinary partial dispersion material... | 08/07/2007 |
| 7239450 | Method of determining lens materials for a projection exposure apparatus A method of determining materials of lenses contained in an optical system of a projection exposure apparatus is described. First, for each lens of a plurality of the lenses, a susceptibility factor KLT/LH is determined. This factor is a measure of the su... | 07/03/2007 |
| 7224540 | Extended depth of field imaging system using chromatic aberration An imaging system (FIG. 3) is disclosed that has a wavelength dependent focal shift caused by longitudinal chromatic aberration in a lens assembly (203) that provides extended depth of field imaging due to focal shift (213,214) and increased res... | 05/29/2007 |
| 7215484 | Zoom lens A zoom lens system includes a first lens group which has a negative refractive power, a second lens group which has a positive refractive power, and a third lens group which has a positive refractive power in this order from the object side and changes the distances... | 05/08/2007 |