Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7933071 | Dual lens optical system and digital camera module including the same A dual lens optical system including a first optical system and a second optical system includes at least one reflection member to selectively redirect object lights in first and second directions toward a photographing device. The first optical system includes, in ... | 04/26/2011 |
| 7889435 | Imaging device having a dual lens optical system A dual lens optical system includes a first optical system redirecting an optical axis of light representing an image of an object by 90° to form an image on a image sensor, and a second optical system having a movable reflection member configured to be selectively... | 02/15/2011 |
| 7768714 | Extender lens apparatus and optical apparatus The extender lens apparatus is detachably attached to an image-forming optical system including a first main lens unit disposed closest to an object and a second main lens unit disposed between the first main lens unit and an image plane. The apparatus includes a fi... | 08/03/2010 |
| 7667897 | Dual lens optical system and dual lens camera having the same A dual lens optical system includes a first optical system redirecting an optical axis of light representing an image of an object by 90° to form an image on a image sensor, and a second optical system having a movable reflection member configured to be selectively... | 02/23/2010 |
| 7320450 | Configurable mounting apparatus A multiply configurable mounting apparatus having an elongated permanently bendable support leg with a support base coupled to a first end of the support leg, the support base being structured for securing the mounting apparatus relative to an external surface; and ... | 01/22/2008 |
| 7310187 | Projection objective, especially for microlithography, and method for adjusting a projection objective A method of adjusting a projection objective permits the projection objective to be adjusted between an immersion configuration and a dry configuration with few interventions in the system, and therefore to be used optionally as an immersion objective or as a dry ob... | 12/18/2007 |
| 7289192 | Projection exposure device A magnification correction device 1 includes magnification correction optics 2, a pressure adjustment device 3 and a controller 4. The magnification correction optics 2 is formed in a shape of a box with a glass plate 20 and... | 10/30/2007 |
| 7289272 | Optical system including an anamorphic lens An optical system includes a primary lens group having a central beam path therethrough and including a front lens group and a rear lens group. An anamorphic lens group lies on the central beam path and is positioned between the front lens group and the rear lens gr... | 10/30/2007 |
| 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 |
| 7215481 | Taking lens, and imaging device incorporating the same A taking lens system includes, in order from an object side thereof, a first lens group (negative refracting), a second lens group (positive refracting), an aperture stop and a third lens group (positive refracting). Focusing from an infinite distance to a finite di... | 05/08/2007 |
| 7209294 | Imaging lens device and portable apparatus having imaging function An apparatus includes a body accommodating an imaging plane, and a lens device providing a light beam path and including lens units arranged along and coaxially with the path. The second lens unit next to the most outwardly located first lens unit is reciprocally ro... | 04/24/2007 |
| 7170689 | Front converter lens A converter lens includes a front unit and a rear unit disposed on an image side with respect to the front unit. The front unit has positive optical power and includes two positive lens elements. The two positive lens elements are spaced apart. The rear unit has neg... | 01/30/2007 |
| 7158311 | Interchangeable lens system A lens system is provided. The lens system includes a first lens system moveable between a first position removed from an optical axis and a second position on the optical axis. The first lens system includes a first lens element, an aperture stop, and a second lens... | 01/02/2007 |
| 7113344 | Anamorphic converter, lens device using the same, and image-taking device using the same An anamorphic converter, which can be inserted into and removed from a lens group of an image-formation optical system, includes an anamorphic lens that satisfies the following conditions 0.9 | 09/26/2006 |
| 7095563 | Anamorphic converter, lens system, and shooting system An anamorphic converter, which is disposed at an image side of an image-forming optical system, includes a first lens unit having one of positive and negative optical power, a second lens unit including an anamorphic lens, and a third lens unit having positive optic... | 08/22/2006 |
| 7009783 | Pickup lens A pickup lens is provided in which various aberrations are satisfactorily corrected, which can be manufactured at low cost, and which has an optical length of 10 mm or less. This pickup lens is configured by arranging, in order from the object side, a first lens L | 03/07/2006 |
| 6831730 | Optical magnification adjustment system and projection exposure device An optical magnification adjustment system being capable of minutely correcting magnification. A first lens 1 of plano-convex is installed on the side of an object surface 5, and a second lens 2 of concave-plano is installed on the side of a for... | 12/14/2004 |
| 6819495 | Auxiliary optical unit attachable to optical devices, particularly telescopic gun sights An auxiliary optical unit attachable to an optical device for optional use therewith, includes: (a) an afocal teleconverter lens system having a predetermined magnification; (b) a laser range finder system for measuring and displaying the range to viewed object; and... | 11/16/2004 |
| 6813089 | Extender optical system An extender optical system, for insertion between a photographic main lens and a camera body for changing the focal length of the lens system as a whole to the long focus side, is formed of, in order from the object side, a first lens group having negative refractiv... | 11/02/2004 |
| 6754008 | Imaging lens arrangement designed for low light conditions Disclosed is an improved lens system for low light applications. This improved low light lens system is designed for any suitable low light application, such as the above described biological imaging application. In one embodiment, a finite conjugate lens system is ... | 06/22/2004 |
| 6738195 | Optical magnification adjustment system and projection exposure device An optical magnification adjustment system being capable of minutely correcting magnification. A first lens 1 of plano-convex is installed on the side of an object surface 5, and a second lens 2 of concave-plano is installed on the side of a for... | 05/18/2004 |
| 6690518 | Camera-attachment lens system A camera-attachment lens system includes a positive condenser lens system and a positive image-forming lens system, and satisfies the following conditions:... | 02/10/2004 |
| 6654179 | Wide converter lens system for both underwater and above-water use A wide converter lens system includes an assembly of two or more specified kinds of lens units and a meniscus concave lens to be attached in front of this assembly. The frame for this assembly is detachably attachable to a watertight underwater housing co... | 11/25/2003 |
| 6556354 | Optical adapter for mounting camera lenses on a video camera Optical adapter for adapting cine-camera objective to video camera, which includes spectral splitter of light into three spectral bands, and three receivers each associated with one spectral band, the three receivers having the same format, the distance b... | 04/29/2003 |
| 6552857 | Soft-focus lens system A soft-focus lens system includes a master lens group and a soft-focus lens group. The soft-focus lens group includes a positive sub lens group and a negative sub lens group. The positive sub lens group and the negative sub lens group are moved to set the... | 04/22/2003 |
| 6542310 | Wide converter lens An afocal, wide converter lens is provided in order to shorten the focal length of a main lens, thereby shortening the projection distance that is needed to fully illuminate a given screen size when the wide converter lens is attached to the enlarging sid... | 04/01/2003 |
| 6449100 | Teleconverter lens A teleconverter lens is disclosed, for attachment to the enlarging side of a projection lens, wherein aberrations generated by a negative focusing lens group positioned at the enlarging side of the projection lens are not made greater by the teleconverter... | 09/10/2002 |
| 6404563 | Portable electronic device having variable focus display A portable electronic device having a variable focus display comprises a housing (512), supporting an image generating apparatus (518, 610, 710, 810), a lens (514, 612, 712, 812), and an optical element (520, 620, 720, 730, 820). The optical element has z... | 06/11/2002 |
| 6373638 | Image taking optical system and reduction optical system A reduction optical system for reducing an image without re-forming the image formed by a main optical system, such as a zoom lens system, wherein the lens having the strongest positive optical power within the reduction optical system satisfies the follo... | 04/16/2002 |
| 6288767 | Imaging optical system An imaging optical system includes a liquid crystal lens including a first body formed of a substantially transparent birefringent liquid crystal member, a second body formed of a substantially transparent birefringent liquid crystal member, and two pairs... | 09/11/2001 |
| 6212016 | Telescopic objective lens system A telescopic objective lens system comprises a positive first lens group and a second lens group, in this order from the object. The second lens group comprises a first sub-lens group and a second sub-lens group, wherein the first sub-lens group is combin... | 04/03/2001 |
| 6181482 | Variable ratio anamorphic lens An anamorphic lens attachment to be used in conjunction with a basic lens. The attachment provides a variable anamorphic ratio. The attachment comprises a first lens group having positive refractive power in a first direction, a second lens group having n... | 01/30/2001 |
| 6160668 | Optical systems A switchable dual field of view objective system 20 comprises a front lens A and a rear lens C with an intermediate lens B switchable between in-use and out-of-use positions. Lens A is positively powered and lens C is negatively or positively powered but ... | 12/12/2000 |
| 6128145 | Image pick-up device, image display device and information recording medium comprising a fisheye lens An image is picked up by a camera comprising a fisheye lens having a relationship of h=n.multidot.f.multidot.tan(θ/m), wherein h is the height of an image of a subject at a certain point, f is the focal distance of the fisheye lens, θ is a field angle, ... | 10/03/2000 |
| 6124981 | Attachment lens having diffraction surface An attachment lens satisfactorily corrects aberrations by using a diffraction surface. The attachment lens is installed on an image surface side of a master lens unit (M) serving as a photographic optical system, and it extends a focal length of the maste... | 09/26/2000 |
| 6002533 | Close-up attachment lens A close-up attachment lens, for enabling close-up photograph along with a main lens, is arranged to be attached to the object side of said main lens. The close-up attachment lens comprises, in that order from the object side, a positive first lens element... | 12/14/1999 |
| 5930034 | Microscope with a telescopic function and method An auxiliary optical unit AU, which is removable on an object side of an objective lens of a microscope, has a built-in auxiliary lens group 15 having a negative refractive power. The auxiliary optical unit AU is provided with a focal point adjustment mec... | 07/27/1999 |
| 5909309 | Method and apparatus for correcting geometrical distortions in an intensified imaging system A method and apparatus to correct and eliminate optical anomalies and geometrical distortions in an intensified imaging system, specifically a night vision system. An image is received from the original objective lens assembly of an unintensified imaging ... | 06/01/1999 |
| 5801886 | Image magnification apparatus An image magnification apparatus, for use in a video display system that displays an image of an object, comprising a connecting module for connecting the image magnifying apparatus to a lens module of the video display system, and an objective lens syste... | 09/01/1998 |
| 5757544 | Image display apparatus A head-mounted image display apparatus having an exit pupil that is enlarged without causing an increase in the size of a relay optical system or a reduction in the size of a projected image. The head-mounted image display apparatus has an image display d... | 05/26/1998 |
