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7436604 Optical lens system for taking image  
An optical lens system for taking image comprises two lens elements with refractive power, from the object side to the image side: a first lens element with positive refractive power having a...
7436597 Projection lens  
A first lens group having a negative refractive power, an aperture diaphragm, and a second lens group having a positive refractive power are arranged in order from an enlargement side. A reduction...
7428109 Image pickup lens system and image pickup apparatus  
An image pickup lens system includes, successively in order from an object side, an aperture stop, a first lens as a double-convex positive lens, and a second lens as a negative meniscus lens...
7400457 Rectangular flat-top beam shaper  
The invention relates to a beam shaping system for providing a square or rectangular laser beam having a controlled intensity profile (uniform, super gaussian or cosine corrected for example) from...
7372644 Imaging lens  
An imaging lens including, in order from an object side towards an image surface side, a diaphragm, a first lens which is a meniscus lens having a positive power whose convex surface faces the...
7372639 Subminiature optical system  
A subminiature imaging optical system with two lenses is provided. The optical system includes an aperture stop. A first meniscus lens has a positive refractive power, and includes aspherical...
7362509 Zoom lens  
A zoom lens includes, in sequence from the object side: a first lens group with an overall negative refractive power; and a second lens group with an overall positive refractive power. A zoom...
7352789 Laser light irradiation apparatus and laser light irradiation method  
Laser light is emitted from a laser oscillator, and the laser light is made to enter a beam expander optical system including a concave lens through a correction lens. The laser oscillator, the...
7339744 Electronic imaging apparatus  
An electronic imaging apparatus includes a zoom optical system having, in order from the object side, a first lens unit with negative power and a second lens unit with positive power, in which lens...
7321475 Image pick-up lens system  
An image pick-up lens system includes an aperture stop ( 10 ), a biconvex first lens ( 20 ), and a meniscus-shaped second lens ( 30 ) having a concave surface on a side of an object. The aperture...
7317580 Zoom lens  
In this invention, to provide a compact zoom lens having a small number of optical element groups to be driven and a simple moving mechanism, at least one of a plurality of optical element groups...
7298561 Optical device  
A front group is formed of a negative first lens as a meniscus lens which is convex at the object side and a negative second lens, and a rear group is formed of a biconvex positive third lens, an...
RE39911 Wide field of view projection lenses for compact projection lens systems employing pixelized panels  
A projection lens for use with LCD panels is provided. The lens has a first lens unit which includes a strong negative lens element having an aspherical surface which provides distortion...
7289273 Zoom lens and electronic imaging apparatus having the same  
A zoom lens includes, in order from the object side, the first lens unit consisting of one negative lens component in which a plurality of lens components are cemented to one another and the second...
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...
7253968 Optical pickup device, optical information recording and reproducing apparatus and objective lens  
An optical pickup device comprises a light source to emit a light flux having wavelength λ; an objective lens including at least two plastic lenses of a first plastic lens having positive...
7239459 Scanning device including plastic high-numerical aperture objective  
An optical scanning device for scanning an information layer ( 104 ) of an optical record carrier ( 102 ) includes a radiation source ( 110 ) for generating a radiation beam ( 108 ) and a high-NA...
7236315 Compact lens system  
A compact lens system includes a first positive lens element ( 1 ) on the object side and a second negative lens element ( 2 ) on the image side. The first positive lens element is a meniscus lens...
7215477 Zoom lens and image display apparatus including the zoom lens  
Provided is a projection lens, including: a plurality of moving lens units that move on an optical axis for zooming; and a plurality of plastic lenses containing plastic, in which when a focal...
7212355 Image pick-up lens system  
An image pick-up lens system includes an aperture stop ( 10 ), a biconvex first lens ( 20 ), and a meniscus-shaped second lens ( 30 ) having a concave surface on a side of an object. The aperture...
7206141 Image pick-up lens system  
An image pick-up lens system includes an aperture stop ( 10 ), a first lens ( 20 ), and a second lens ( 30 ) having a concave surface on an object side. The aperture stop, the first lens and the...
7190528 Zoom lens and image projection apparatus having the same  
A zoom lens comprises a plurality of lens units including a first lens unit disposed most adjacent to an enlargement side and having negative refractive power, wherein one or more lens units of the...
7180685 Image pick-up lens system  
An image pick-up lens system includes an aperture stop ( 10 ), a biconvex first lens ( 20 ), and a meniscus-shaped second lens ( 30 ) having a concave surface on a side of an object. The aperture...
7177087 Compound asperic ocular for riflescope  
An ocular or eyepiece lens assembly for a riflescope or spotting scope or other types of telescopic optical systems which may include a three element lens assembly comprised of materials of three...
7167324 Imaging lens system  
The imaging lens system includes, from the object side, a diaphragm, a first lens as a positive meniscus lens whose convex surface faces the object side, and a second lens as a positive lens whose...
7167318 Zoom optical system  
A simple two-group zoom optical system that favorably corrects aberrations includes, in order from the object side, a first lens group of negative refractive power, a stop, and a second lens group...
7164545 Imaging lens system  
The imaging lens system includes, from the object side, a diaphragm, a first lens as a positive meniscus lens whose convex surface faces the object side, and a second lens as a positive lens whose...
7164538 Zoom lens system  
A zoom lens system comprises, successively from the object side, a first negative lens group and a positive second lens group. The first lens group includes a negative meniscus lens and a positive...
7139134 Image pickup lens  
Provided is an image pickup lens, in which the optical characteristic can be improved and, further, the productivity can be improved through increasing the telecentricity by keeping the distance...
7130134 Optical scanning device  
The invention relates to an optical scanning device ( 1 ) for scanning an information layer ( 2 ) by means of a radiation beam ( 4 ). The device includes: a radiation source ( 6 ) for providing...
7110190 Imaging lens  
The present invention relates to an imaging lens with an number in the range 4.0, configured from two lenses, with a short lens optical length, and with sufficiently high image contrast so that...
7088528 Single focus lens including a front stop  
A single focus lens includes, in order from the object side: a diaphragm stop; and first and second lens components, each lens component being of positive refractive power and each having a convex...
7079473 Objective lens, optical pickup apparatus and recording reproducing apparatus  
An objective lens for use in an optical pickup apparatus has two positive lenses of a first lens arranged at a light source side and a second lens arranged at an information recording medium side...
7079324 Zoom lens and image projection apparatus including the same  
A zoom lens includes a plurality of lens groups including a first lens group arranged on the foremost side and having negative optical power. Zooming is performed by moving at least one of the...
7061696 Single focus lens with particular optical distortion  
A single focus lens includes, in order from the object side: a diaphragm stop; and first and second lens components, each lens component being of positive refractive power and each having a convex...
7061688 Zoom lens with a vibration-proof function  
A zoom lens with a zoom ratio of about three includes a first lens group of negative refractive power that moves along an optical axis during zooming relative to a second lens group of positive...
7054074 Objective lens and optical pickup apparatus, information recording/reproducing apparatus  
An objective lens is configured of a first crown-glass lens and a second flint-glass lens, whereby it can exhibit substantially identical optical properties at a plurality of recording/reproducing...
7046455 Variable magnification lens and imaging apparatus using the same  
A variable magnification lens includes, in order from the object side, a front lens unit with positive refracting power and a rear lens unit with negative refracting power so that spacing between...
7038861 Image pick-up lens  
A low-cost bright image-pick up lens of a small size is provided which is short in total length, wherein the angle of field is beyond 30°; the angle of incidence onto the image pickup device is...
7035018 Imaging lens  
An imaging lens for an image pickup device consists of two lens components that may each consist of a lens element. In order from the object side, these lens components have negative and positive...
7031080 Photographic lens  
A photographic lens has a first and second positive lens. The first lens is a meniscus lens having a convex object side surface. The second lens is a double-convex lens. The photographic lens...
7027234 Image-forming optical system  
The present invention is directed to an image-forming optical system. The image-forming optical system according to the present invention contains, in order from an object side: an iris diaphragm;...
6999247 Wide-angle projection lens  
A wide-angle projection lens includes, in order from an object side: a first lens group including four lenses and having a negative refractive power; and a second lens group including a cemented...
6989941 Two-group zoom lens  
A comparatively low f-number, compact two-group zoom lens that corrects aberrations in the visible and the near-infrared regions includes, in order from the object side, a first lens group of...
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...
6968128 Zoom lens and camera having the same  
A zoom lens includes in order from the object side to the image side, a first lens unit of negative optical power and a second lens unit of positive optical power. Zooming is effected by varying...
6934094 Imaging lens device  
An imaging lens device has an imaging lens system that forms an optical image and an image sensing device that converts the optical image formed by the imaging lens system into an electronic...
6927927 Taking lens system  
A taking lens system has two lens elements, a positive lens element and a meniscus lens element convex to the image side. Another taking lens system has two lens elements, a first lens element...
6919996 Objective lens for use in optical pickup apparatus and optical pickup apparatus  
An objective lens for use in an optical pickup apparatus, comprises a first lens molded with a plastic and having an optically functional section, flange section provided around the periphery of...
6888686 Lens for image pickup  
A lens for image pickup is provided in which various aberrations are corrected satisfactorily, the optical length is at maximum approximately 6 mm, and moreover a sufficient back focus is secured....
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