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Match Document Document Title
7633690 Photographic lens  
A photographic lens comprising a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a fourth lens...
7609454 Imaging lens system with high resolution and compact size  
An imaging lens includes, in the order from the object side to the image side, a first lens of positive refraction power, a second lens of negative refraction power, a third lens of positive...
7561347 Subminiature optical system  
A subminiature optical system including: a first lens that is a biconvex lens with a positive refractive power; a second lens with a negative refractive power, the second lens formed in a meniscus...
7558008 Photographing lens unit including plurality of lenses and imaging apparatus with the same  
In a photographing lens unit, an aperture diaphragm, a first lens having positive refractive power, a second lens having negative refractive power, a third lens of a positive meniscus lens with a...
7548384 Lens system with small emergence angle  
A lens system includes a positive refractive power first lens, a negative refractive power second lens, a positive refractive power third lens, and a negative refractive power fourth lens in that...
7542670 Finder optical system for a single-lens reflex camera  
An eyepiece includes, in order from the object side, a first lens with positive power, a second lens with positive power, and a third lens with negative power. The first lens is a positive meniscus...
7492532 Optical lens system  
An optical lens system includes a first lens having positive lens power; a second lens having negative lens power; a third lens having positive lens power; and a fourth lens having negative lens...
7486328 Picture-taking lens, image pick-up unit and hand-held device  
A picture-taking lens for forming an image of an object image on a solid picture-taking element, comprising in order from the object side: a first lens having a positive refractive power and...
7477459 Micro lens  
A micro lens, from an object side to an image side, sequentially includes a stop, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens...
7474478 Image pickup lens, image pickup apparatus and mobile terminal  
The present invention provides an image pickup lens for forming a light flux from a subject into an image on an image pickup element, and the image pickup lens includes, in order from an object...
7453654 Imaging lens  
An imaging lens is provided and has, in order from the object side, a first lens of a positive lens having a convex surface on the object side thereof; a second lens in a meniscus shape having a...
7446954 Hybrid lens system  
A hybrid lens system includes: a first lens with positive diffractive power, a second lens with negative diffractive power, a third lens with positive diffractive power, and a fourth lens with...
7440198 Focus adjustable optical system  
A focus adjustable optical system includes a first lens unit and a second lens unit arranged on an optical axis in direction from the object side to the image side. The two opposite surfaces of...
7433135 Image pick-up lens system  
A image pick-up lens system includes: a first lens with positive diffractive power, a second lens with negative diffractive power, a third lens with positive diffractive power, and a fourth lens...
7423813 Zoom lens system and image pickup apparatus including the same  
There is disclosed a zoom lens system comprising, in order from an object side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third...
7408723 Imaging lens with high resolution and short overall length  
An exemplary imaging lens includes, in this order from the object side to the image side thereof, a first lens of positive refraction power, a second lens of negative refraction power, a third lens...
7369319 Optical system for telescope  
An optical system ( 1 ) of telescope includes an objective lens ( 10 ) for collecting incident light and transmitting the incident light along a light path, and an imaging lens group ( 20 )...
7355801 Image pickup lens assembly  
An image pickup lens assembly comprises three lens groups, from the object side to the image side: a first lens group, a second lens group, and a third lens group. The first lens group includes two...
7342726 Autofocusing optical system of camera module  
An autofocusing optical system of a camera module which can be installed in a subminiature camera module. In the optical system, a first lens group has an overall positive refractive power. A...
7321474 Photographic lens  
A small size photographic lens for the photographic unit of a device such as a camera or a camera phone. The photographic lens includes: a first lens having positive refractive power; a second lens...
7289278 Subminiature optical system  
A subminiature imaging optical system suitable for a subminiature optical device such as a mobile phone camera. An aperture stop is provided. A first lens has a positive refractive power and is...
7274518 Optical system for taking image  
An optical system comprises from the object side: a positive first lens element, a negative second lens element, a positive third lens element, a fourth lens element, and an aperture stop located...
7248421 Image forming optical system and electronic instrument using the same  
An imaging optical system includes, in order from an object side, a first lens having positive refracting power, a concave surface of which is directed toward the object side, a third lens having...
7218457 Interchangeable lens  
Providing an interchangeable lens capable of carrying out quick focus from infinity to a close object with a magnification of almost life size by a light-weight moving lens group, exhibiting...
7215492 Image pickup lens, image pickup apparatus, and mobile terminal provided with image pickup apparatus  
An image pickup lens for forming a subject image on an photoelectric converter of a solid-sate image pickup element, includes: an aperture stop; a first lens having a positive refractive power; a...
7177098 Image pickup lens  
An image pickup lens can form an excellent optical image on a compact image pickup element having a large number of pixels. The image pickup lens includes, sequentially from the object side, an...
7177099 Deep ultraviolet unit-magnification projection optical system and projection exposure apparatus  
A 1× projection optical system for deep ultra-violet (DUV) photolithography is disclosed. The optical system is a modified Dyson system capable of imaging a relatively large field at high...
7133221 Lens system and optical device having the same  
A lens system has a plurality of lenses, a stop, and a diffractive surface, the entire lens system moves during focusing, and the lens system satisfies the condition of β≧0.5, where β is a...
7079330 Lens having aspheric surfaces  
A lens that can be used in a digital camera includes in sequence a first lens element ( 20 ), a second lens element ( 30 ), a third lens element ( 40 ), and a fourth lens element ( 50 ). The first...
7061694 Image forming optical system and electronic instrument using the same  
An imaging optical system that includes, in order from an object side, a first lens having positive refracting power, a concave surface of which is directed toward the object side, a third lens...
7012765 Image pickup lens and image pickup device  
An image pickup lens includes: a first lens which is a positive lens having a positive refractive power; a second lens which is a negative lens having a negative refractive power; a third lens...
6950246 Imaging optical system and apparatus using the same  
The image forming optical system comprises, in order from an object side, a first lens which is positive meniscus lens having a convex surface directed toward an object side, an aperture stop, a...
6927926 Telephoto lens and telephoto lens apparatus having the same  
A telephoto lens includes, in order from the object side, a first lens unit having a positive refracting power, a second lens unit having a negative refracting power, a third lens unit having a...
6917479 Photographing lens  
The present invention is directed to a photographing lens containing, in order from an object side: a first lens having a positive refractive power and a convex surface facing the object side; a...
6909559 Lens for reading an original, method and apparatus for reading an original, and image forming apparatus  
A lens for reading an original, comprises five lenses as a whole including two positive and two negative lenses, an aspherical surface provided on at least one surface of the five lenses, a...
6891684 Image taking lens system  
This specification discloses an image taking lens system which can quickly effect focusing from an infinity object to a short-distance object. The image taking lens system disclosed in the present...
6829106 High zoom-ratio zoom lens system  
A high zoom-ratio zoom lens system includes a positive first lens group, a negative second lens group, a positive third lens group, and a negative fourth lens group. Zooming is performed by moving...
6747810 Single focus lens having short overall length  
A single focus lens is disclosed that is formed of only four lens components, which are arranged in positive, negative, positive and relatively weak positive or negative refractive power order from...
RE38465 Exposure apparatus  
A projection optical system of the present invention has a first lens group G 1 being positive, a second lens group G 2 being negative, a third lens group G 3 being positive, a fourth lens group...
6359739 Macro lens system  
A macro lens system which includes a positive first lens group, a negative second lens group, a positive third lens group, and a negative fourth lens group, in this order from the object. Upon...
6342972 Wide-angle zoom lens system  
A wide-angle zoom lens system having a short optical total length not only at the wide-angle end but also at the telephoto end and a reduced telephoto ratio despite the fact that it has a high zoom...
6288850 Image readout lens and image readout apparatus  
A bright image readout lens having a wider angle of view comprises, successively from the object side, a first lens L 1 made of a positive meniscus lens having a convex surface directed onto the...
6288820 Image scanning lens having four lens elements and an image scanning unit that uses it  
An image scanning lens for an image scanner unit, such as a facsimile machine or document scanner is disclosed having only four lens elements with refractive power. In order from the object side,...
6236522 Photographic optical system  
A photographic optical system greatly improved in chromatic aberration and capable of providing high image quality with a compact, lightweight and low-cost arrangement having a minimal number of...
6111703 Image pickup optical system  
An image pickup optical system comprising, in order from the object side, a first lens component which comprises a meniscus lens element having a convex surface on the object side and a positive...
5953169 Rotary drum type optical filter apparatus  
The present invention relates to a rotary drum type optical filter apparatus, which comprises a filter unit for receiving an optical signal to spectralize the optical signal; a lens unit provided...
5936783 Image readout lens and image readout apparatus using the same  
A four-element lens configuration of positive, negative, positive, and negative satisfies predetermined conditional expressions, thereby correcting various kinds of aberration and achieving...
5900994 Readout lens  
In a four-sheet lens configuration composed of convex, concave, convex, and concave lenses, predetermined conditional expressions are satisfied so as to attain a compact size and a wider field...
5862000 Photographic lens system  
A photographic lens system which is composed, in order from the object side, of a first lens element having a positive refractive power, a second lens element having a negative refractive power, a...
5499142 Large aperture wide angle type photographic lens system  
A large aperture wide angle type photographic lens system comprises a positive meniscus lens having a convex surface directed toward an object, a bi-concave lens provided at the image side with...
Matches 1 - 50 out of 86 1 2 >