Matches 151 - 200 out of 463 < 1 2 3 4 5 6 7 8 9 10 >
Match Document Document Title
7068447 Imaging lens  
The pickup lens ( 1 ) employing the present invention includes a first lens group ( 11 ) having negative power, a diaphragm ( 12 ), a second lens group ( 13 ) having positive power, and a third...
7061687 Zoom lens, and electronic apparatus using the same  
A zoom lens includes a negative first lens group G 1 fixed during power variations, a positive second lens group G 2 moving from an image side toward the object side from the wide-angle end...
7050242 Zoom lens and an imaging apparatus  
A zoom lens is disclosed to comprise sequentially from an object side, a first lens group having an negative refracting power, and being movable back and forth along with an optical axis when a...
7050241 Image-taking lens apparatus  
A zoom lens system for forming an optical image of a subject on the light-receiving surface of an image sensor that converts the optical image into an electrical signal is provided with, from the...
7046453 Stepwise variable zoom lens system  
A stepwise variable zoom lens system according to the present invention has, in order from an object side, a first lens group of negative refracting power, a second lens group of positive...
7046452 Three-group zoom lens  
A three-group zoom lens includes, in order from the object side, first, second and third lens groups having negative, positive and positive refractive power, respectively. During zooming from the...
7035024 Imaging lens  
The present invention includes, from the object side to the image plane side, an aperture stop with a predetermined diameter, a first lens with a positive refractive power and a bi-convex shape...
7031073 Zoom lens for digital image capturing apparatus  
A zoom lens for digital image capturing apparatus is a shared lens of digital static cameras and digital video cameras. It contains three lens groups. From the object plane to the image plane, the...
7023623 Zoom lens and electronic still camera using the same  
It is an object to provide a zoom lens made of three groups having a zoom ratio of ×2.5 to ×3.2 if the object distance is ∞, an field angle at the wide-angle end of 60° to 70°, high...
7019911 Zoom lens system and image pickup apparatus having the same  
Disclosed is a zoom lens system including in an order from an object side to an image side: a first lens unit having a negative refractive power; a second lens unit having a positive refractive...
7006302 Image-formation lens,system and imaging system using the same  
The invention relates to an image-formation lens system well balanced among cost reductions, size reductions and performance improvements and an imaging system incorporating that lens system. The...
7006300 Three-group zoom lens  
A zoom lens includes three lens groups. The first lens group from the object side has negative refractive power and is formed of two lens components. The second lens group from the object side has...
7002756 Variable focal length lens, photographing lens unit, camera, and portable information terminal device  
A negative first group optical system, a positive second group optical system, and a positive third group optical system are sequentially arranged from the object side. A stop moving integrally...
6995921 Compact zoom lens system and digital camera using the compact zoom lens system  
A zoom lens apparatus includes a first optical lens group having a negative focal length, a second optical lens group having a positive focal length, and a third optical lens group having a...
6995923 Small lightweight zoom lens  
A zoom lens includes three lens groups. The first lens group from the object side has negative refractive power and is formed of one or two lens components. The second lens group from the object...
6995924 Zoom lens  
A zoom lens includes at least two lens groups that move for zooming. An object-side lens group is formed of a lens component having negative refractive power and a meniscus shape and a second lens...
6985300 Wide-angle zoom lens  
A three-group zoom lens includes first, second, and third lens groups, of negative, positive, and positive refractive power, respectively. The second lens group includes a stop and the third lens...
6982834 Wide-angle zoom lens including at least one aspheric lens surface  
A three-group zoom lens includes first, second, and third lens groups, of negative, positive, and positive refractive power, respectively. The second lens group includes a stop and the third lens...
6980369 Zoom lens  
To obtain a small and thin zoom lens unit, the present invention includes a first lens group having a negative refractive power as a whole, a second lens group having a positive refractive power as...
6972908 Three-group zoom lens including cemented lens component  
A zoom lens includes three lens groups. The first lens group from the object side has negative refractive power and is formed of a lens component having negative refractive power and a lens element...
6950243 Refractive multispectral objective lens system and methods of selecting optical materials therefor  
Refractive optical systems having first and second lens systems are transmissive to infrared radiation. The first lens system includes one of BaF 2 and CaF 2 . An exemplary second lens system...
6940657 Zoom lens  
A zoom lens includes, in order from the object side, a first lens unit with positive refracting power, a second lens unit with positive refracting power, and a third lens unit with negative...
6940663 Zoom lens system  
A compact zoom lens system allowing excellent image quality regardless of an object distance, is disclosed. The disclosed zoom lens system comprises, in order from an object side to an image side,...
6930831 Vari-focal polar alignment scope  
A vari-focal polar alignment scope includes an objective optical system, a relay optical system, and an eyepiece optical system, in that order from the object side. The relay optical system...
6927920 Zoom optical system and imaging apparatus using the same  
A zoom optical system includes only one optical-element group moved in a magnification change and at least one deformable mirror having a compensating function for compensating for a shift of an...
6924939 Zoom lens system, and image pick-up apparatus incorporating such zoom lens system  
Disclosed is a zoom lens system which includes, in order from the object side to the image side, a first lens unit having negative optical power, a second lens unit having positive optical power,...
6919994 Zoom lens including at least four aspheric surfaces  
A zoom lens includes, in order from the object side, a first lens group of negative refractive power, and second and third lens groups, each of positive refractive power. The second lens group...
6912095 Projection lens system  
A compact and light-weighted projection lens system that is capable of projecting an image at an angle as wide as 75 degrees with sufficient field angle and brightness as represented by F number of...
6909846 Zoom lens systems  
A zoom lens system having an exit pupil far away from the image plane, zoom ratio of about three, and in particular having compactness and high optical performance includes, in order from an...
6906868 Zoom lens system  
A zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group. The negative first lens group includes a negative meniscus lens element...
6900947 Imaging lens device  
An imging lens device has a zoom lens system and an imaging sensor. The zoom lens system has a plurality of lens units and changes gaps between the lens units to thereby generate an optical image...
6888682 Projector lens system  
A projector lens system includes a negative first lens group and a positive second lens group. The first lens group comprises a first lens element that is formed as a negative meniscus lens...
6888685 Retracting mechanism of a zoom lens barrel  
A retracting mechanism of a zoom lens barrel includes first, second and third lens groups, wherein the first and third lens groups are integrally moved along an optical axis during variation of a...
6885507 Zoom lens system which covers a wide angle range  
A zoom lens system, covering a wide-angle range, includes a negative first lens group, a positive second lens group, and a negative third lens group. Zooming is performed by varying the distances...
6871017 Lens drive control apparatus for zoom lens system having a switching lens group  
A lens drive control apparatus for a camera having a zoom lens provided with variable lens groups, at least one of the variable lens groups including a switching lens group having two sub lens...
6865026 Zoom lens, and electronic imaging system using the same  
The invention relates to a zoom lens with an easily bendable optical path, which comprises a reduced number of lens element while having high optical specification. The zoom lens comprises a moving...
6862408 Image pickup system  
The object of the invention is to enhance the performance of an image pickup system comprising a zoom lens by developing an unheard-of design of the configuration of lens surfaces used in the zoom...
6862411 Real image mode finder optical system  
A real image mode finder optical system is constructed to be independent of a photographing optical system and includes, in order from the object side, an objective optical system with a positive...
6862142 Multi-detector microscopic inspection system  
Techniques for utilizing a microscope inspection system capable of inspecting specimens at high throughput rates are described. The inspection system achieves the higher throughput rates by...
6862143 Zoom lens and optical apparatus having the same  
A zoom lens is constructed with, in order from an object side to an image side, a first lens unit of negative optical power, the first lens unit including a negative meniscus lens having a concave...
6853495 Wide-angle lens system  
A wide-angle lens system having a long back focal length, disposed in front of a ⅓″ CCD camera and the focal length (f) for all lens groups is 3.0 mm, the F-number is 3.0 and the half-field...
6844989 Lens system installed in mobile communication terminal  
Disclosed is a lens system installed in a mobile communication terminal, comprising: a first lens including at least one aspherical plane and having a positive refractivity; a perforated iris...
6844986 Zoom lens and image taking apparatus using the same  
In order to provide a zoom lens which has excellent optical performance with a compact configuration using a small number of constituent lenses, a zoom lens according to the present invention...
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...
6839184 Zoom lens assembly  
A lens assembly includes a first group of lens having negative power, a second group of lens having positive power, and a third group of lens having positive power arranged in sequence from an...
6839183 Zoom lens, camera, and portable information terminal device  
A zoom lens includes a negative first group optical system, and a positive second group optical system, which are sequentially arranged from an object side, and an aperture stop disposed on the...
6829101 Zoom lens, and image pickup apparatus  
The present invention relates to a digital still camera that is compatible with an increasing number of pixels and uses a zoom lens having a high zoom ratio yet compact, simple construction,...
6819499 Zoom lens system, and image pickup system using the same  
The invention provides a zoom lens system which has a zoom ratio of about 3, a wide field angle on the wide-angle end and a small F-number and enables satisfactory image-formation capability to be...
6813091 Zoom lens system and photographing apparatus having the same  
This invention provides a zoom lens system with, in succession from the front to rear, a first lens unit of negative optical power, a second lens unit of positive optical power and a third lens...
6809882 Wide-angle zoom lens  
A wide-angle zoom lens is disclosed having only two lens groups, of negative and positive refractive power in order from the object side, respectively, and which provides an image angle at the...
Matches 151 - 200 out of 463 < 1 2 3 4 5 6 7 8 9 10 >