Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7542219 | Intermediate telephoto lens system An intermediate telephoto lens system includes a positive front lens group, a variable-aperture diaphragm, and a positive rear lens group, in this order from the object. The positive front lens group includes a positive first lens element L1, a positiv... | 06/02/2009 |
| 7418199 | Imaging apparatus An imaging apparatus including a first lens unit with positive power in which the most object-side surface is concave and the most image-side surface is convex, an aperture stop, a second lens unit with positive power in which the most object-side surface is convex ... | 08/26/2008 |
| 7274515 | Bifocus lens system and a portable machine using the same A bifocus lens system that is particularly suitable for being used in the portable machine, which not only can improve the incident angle but also can ensure miniaturization. The bifocus lens system comprises: a first lens group, a second lens group at wide angle si... | 09/25/2007 |
| 7136226 | Front teleconverter lens system A front teleconverter lens system having superb optical performance with less production of aberration in spite of its compactness. The front teleconverter lens system includes, in order from an object, a first lens group having positive refractive power, and a seco... | 11/14/2006 |
| 7106528 | Method and apparatus for manufacturing large double-sided curved Fresnel lens A method of manufacturing a large double-sided curved Fresnel lens. The method includes a machining step (A) of performing ultra-precise three-dimensional machining on an upper mold and a lower mold to each have an upper transfer surface and a lower transfer surface... | 09/12/2006 |
| 6844984 | Projection objective A projection objective having a variable focal length, preferably serving to image tilting mirror matrices or reflecting and/or transmitting LCDs, said projection objective comprising three groups of lenses (G1, G1, G3) arranged on a common optical axis, wherein, st... | 01/18/2005 |
| 6724532 | Dual-lens hybrid diffractive/refractive imaging system The present invention discloses a dual-lens hybrid diffractive/refractive imaging system comprising: a first lens including a concave surface and a convex surface; and the second lens including a convex surface and a concave surface. The concave surface of the first... | 04/20/2004 |
| 6580568 | Telephoto lens system A telephoto lens system includes a positive first lens group, a negative second lens group and a positive third lens group. Upon focusing, the second lens group moves toward the image, and the telephoto lens system satisfies the following conditions: 1.35... | 06/17/2003 |
| 6532342 | Photographing lens system A photographing lens system including a first lens group, a second lens group, and a third lens group. The negative second lens group is moved to the image, upon focusing. The positive first lens group includes a biconvex lens element, another biconvex le... | 03/11/2003 |
| 6493157 | Image-capturing lens An image-capturing lens is formed of front and rear lens groups having negative and positive refractive power, respectively, in order from the object side. The rear lens group is formed of, in relative sequential order from the most object side of the rea... | 12/10/2002 |
| 6445511 | Inner-focus-type lens An inner-focus-type lens is formed of three lens groups of positive, negative and positive refractive power, respectively, in order from the object side. The first lens group is formed of four lens elements of positive, positive, negative and negative ref... | 09/03/2002 |
| 6381079 | Optical system and optical apparatus having the same An optical system includes, in order from an object side to an image side, a first lens unit of positive optical power, and a second lens unit of negative refractive power, wherein focusing from an infinitely distant object to a closest object is effected... | 04/30/2002 |
| 6359738 | Two-group zoom lens system and display device having phototaking function The invention relates to a zoom lens system of two-group construction, one lens for each group, which is less susceptible to aberration variations even upon zooming and can be much more increased in terms of lens aperture and zoom ratio. The zoom lens sys... | 03/19/2002 |
| 6342975 | Zoom lens The object of the invention is to reduce the size of a camera by the provision of a zoom lens system which has a high zoom ratio and a small telephoto ratio at the wide-angle and telephoto end, and is simple in lens arrangement and reduced in size during ... | 01/29/2002 |
| 6317275 | Internal focusing telephoto lens The internal focusing telephoto lens includes a first lens group I of positive refractive power, a second lens group II of negative refractive power and a third lens group III of positive refractive power, arranged in order from an object side. The second... | 11/13/2001 |
| 6295168 | Refractive optical system that converts a laser beam to a collimated flat-top beam An optical system having a first positive optical element having an aspherical surface; and a second positive optical element having an aspherical surface. The first and second optical elements are arranged in a Keplerian configuration. The aspheric surfa... | 09/25/2001 |
| 6166860 | Screen illumination apparatus and method In a device for directing light longitudinally forwardly, the combination comprising a light source, and a protective, transparent envelope extending about the light source; a drum lens having a body extending about the light source and envelope, for refr... | 12/26/2000 |
| 5973859 | Apochromatic lens system An apochromatic lens system which includes, in this order from the object, a positive first lens group and a positive second lens group; wherein the following conditions are satisfied: .nu.I+ | 10/26/1999 |
| 5812326 | Wide angle lens A wide angle lens is made of three groups so as to satisfy a predetermined conditional expression concerning abbe number, thereby making it telecentric and yielding no eclipse in its peripheral luminous flux. Also, an apparatus accommodating it is made co... | 09/22/1998 |
| 5764425 | Telephoto lens A telephoto lens includes, in the following order from the object side, a positive cemented lens component composed of a biconvex lens and a biconcave lens and having a meniscus shape as a whole with the convex side facing the object side, and a negative ... | 06/09/1998 |
| 5764426 | Variable focal length optical system A variable focal length optical system includes, in the following order from an object side, a first lens unit having a negative refractive power and a second lens unit having a positive refractive power, wherein the focal length of an entire lens system ... | 06/09/1998 |
| 5745306 | Internal focusing telephoto lens The internal focusing telephoto lens of the invention has a focusing group with a small effective diameter and small focusing movement amount and maintains favorable optical performance. The internal focusing telephoto lens of the invention includes, in t... | 04/28/1998 |
| 5715098 | Lens system for a head separated type charge coupled device camera Disclosed is a telephoto-type lens system of a head separated charge coupled device (CCD) camera, which includes a first lens group having a positive focal length, a second lens group having a negative focal length, and a third lens group. The first lens ... | 02/03/1998 |
| 5640277 | Large aperture medium telephoto lens system The lens system includes, in order from an object side, a 1-st lens unit having a positive refractive power which has at least two positive lens elements and a negative lens element positioned on an image side of said positive lens elements, a 2-nd lens u... | 06/17/1997 |
| 5627687 | Objective lens driving apparatus and method for manufacture thereof An objective lens driving device, and the method of its manufacture, comprising an objective lens, a stationary support, a holder carrying one or more driving coils and having mounted thereon an objective lens, a plurality of arm-shaped resilient supporti... | 05/06/1997 |
| 5627686 | Large-aperture medium-range telephoto lens system In a large-aperture medium-range telephoto lens system, which includes, in the following order from the object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having ... | 05/06/1997 |
| 5490014 | High-aperture-ratio inner-focus telephoto lens A high-aperture-ratio inner-focus telephoto lens comprises a first lens group of positive refracting power, a second lens group of negative refracting power and a third lens group of positive refracting power arranged in the named order from the object si... | 02/06/1996 |
| 5438455 | Internal focus telephoto lens for an auto focus camera In an internal focus telephoto lens comprised, in succession from the object side, of a first lens unit of positive refractive power, a second lens unit of negative refractive power and a third lens unit of positive refractive power, the first lens unit o... | 08/01/1995 |
| 5390049 | Photographic lens A photographic lens system includes a positive meniscus lens whose the both lens surfaces are shaped in a aspherical surface respectively, the lens is arranged to satisfy the following inequality: 0.02 | 02/14/1995 |
| 5388006 | Telephoto camera lens The telephoto lens is in each case put together from two different lens systems, a front group and a focusing group. The object-side front groups have fixedly arranged lens elements or lens element groups and the image-side focusing groups have mutually d... | 02/07/1995 |
| 5325234 | Telephoto lens system A telephoto lens system that adopts an inner focusing method and that is capable of satisfactory correction of aberrations while insuring an adequate back focus without increasing the overall lens length. The present telephoto lens system comprises, in or... | 06/28/1994 |
| 5253114 | Zoom lens system A zoom lens system is arranged in three lens groups, in the order from object side to image plane side, that the first lens group has negative refractive power, the second lens group has positive refractive power, and the third lens group has negative ref... | 10/12/1993 |
| 5177639 | Stop device for zoom lens A stop device for a zoom lens includes an aperture-stop provided between a front lens group and a rear lens group. The front lens group, the rear lens group, and the aperture-stop are moved relative to each other by a motor, to carry out a zooming operati... | 01/05/1993 |
| 4852984 | Telephoto lens of large aperture ratio A telephoto lens comprising, from front to rear, a first lens unit including a lens of negative power with its rear surface concave toward the rear and whose overall power is positive, a second lens unit of negative power axially movable for focusing, and... | 08/01/1989 |
| 4786152 | Telephoto lens system A compact telephoto lens system with a large aperture whose aberrations are corrected well at any focusing position. This telephoto lens system consists of three lens units, namely a positive, a negative and a positive lens unit and only the negative lens... | 11/22/1988 |
| 4527868 | Large-aperture ratio telephoto lens system A high performance large aperture ratio telephoto lens system having a focal length of 200 mm to 300 mm, aperture ratio of 1:2.0 and low telephoto ratio and comprising a first converging lens group, a diverging lens group and a second converging lens grou... | 07/09/1985 |
| 4494819 | Telescope objective system for the infrared range A telescope objective system (10) is formed by a primary lens having a single lens element (A) aligned on a common optical axis (11) with a secondary lens having two lens elements (B,C) the shape and power distribution of lens elements (A,B,C) being such ... | 01/22/1985 |
| 4400065 | Multi-purpose telescope A multi-purpose telescope objective having a Petzval type lens configuration and including an iris diaphragm.... | 08/23/1983 |
| 4196970 | Optical objective with extended varifocal range An objective of a photographic or cinematographic camera has an adjustable four-component front lens group and a fixed rear lens group. Axial displacement of the movable second and third components of the front group establishes a normal varifocal range i... | 04/08/1980 |
| 4152050 | Shift lens system A shift lens system having a correcting means for correcting aggravation of aberrations to be caused when the lens system is shifted in parallel with the image surface. The correcting means is arranged to decenter at least one lens component in the lens s... | 05/01/1979 |
