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Match Document Document Title
7619832 Imaging apparatus  
An imaging apparatus, configured to form an image on an image pickup element, includes, in an order from an object side toward an image side, a first optical unit having a negative refractive...
7619831 Zoom lens and projector unit  
To provide a compact, high-performance zoom lens having a small lens aperture for enlarging an image from a light valve such as a DMD for forming an image by changing a reflecting direction of...
7609458 Projection apparatus, elevation angle control method therefor and recording medium  
A projection apparatus includes a distance measuring unit that measures a distance to a screen on which an image is to be projected; a projection unit that has a zoom mechanism unit capable of...
7599127 Zoom lens system  
Providing a zoom lens system having excellently correcting various aberrations with accomplishing to be compact, lightweight, and slim upon being retracted. The system is composed of, in order from...
7580194 Projection lens with high resolution and reduced overall length  
An exemplary projection lens includes, in this order from the screen-side thereof, a negative lens group having negative refraction of power, and a positive lens group having positive refraction of...
7576924 Two-unit zoom lens system and image pickup apparatus using the same  
A two-unit zoom lens system includes in order from an object side thereof, a first lens unit G 1 having a negative refracting power, a second lens unit G 2 having a positive refracting power, and...
7576923 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...
7573647 Optical unit and image capturing apparatus including the same  
In zooming, an optical unit moves the lens unit located at the most image side and the image sensor along the optical axis while not moving at least one lens unit, of a plurality of lens units,...
7564617 Short infrared zoom lens system  
An infrared lens system including a focus section that focus infrared radiation at an image plane, and a zoom section that adjusts a desired focal length of the infrared radiation, the focus...
7554748 Zoom lens system  
An exemplary zoom lens system includes a negative first lens group and a positive second lens group. The first lens group includes a meniscus-shaped first lens with negative refracting power and a...
7548380 Zoom lens  
A zoom lens is disclosed. The zoom lens comprises a first lens group located adjacent to an object side and having a negative refractive power, and a second lens group located adjacent to an image...
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...
7542215 Zoom lens system and optical apparatus using the same  
A zoom lens system excellently correcting various aberrations with accomplishing compactness, lightweight, and slimness upon accommodating lens barrel. The system consists of, in order from an...
7542213 Projecting zoom lens and projection display device  
A power varying operation is performed by moving four lens groups out of six lens groups. A reduction side of a zoom lens is constructed as a substantially telecentric system. An aspheric lens is...
7532411 High zoom ratio zoom lens system  
Providing a high zoom ratio zoom lens system having a short total lens length and a small diameter of the first group despite of securing excellent optical performance, a half angle of view of...
7522350 Zoom lens system and image pickup apparatus including the same  
A zoom lens system includes a first lens unit having a negative optical power and a second lens unit having a positive optical power in order from the object side to the image side. In a zooming...
7505211 Photographic wide angle zoom objective of the retrofocus type  
Photographic wide angle zoom objective of the retrofocus type having a group of negative refractive power (VG−) comprising four lens components (L 1 , L 2 , L 3 , L 4 ) and being a front group...
7477454 Digital camera and mobile information terminal apparatus  
A digital camera and a mobile information terminal apparatus including a lens barrel including a first lens group and a second lens group disposed on an optical axis and configured to be related to...
7466500 Lens unit and image pickup apparatus  
A lens unit according to the present invention is capable of varying power for forming an image onto an image pickup element. The lens unit includes: a plurality of lens groups, a diaphragm, and a...
7466495 Image pickup apparatus and zoom lens  
An image pickup apparatus includes a zoom lens including at least two movable lens groups; an image pickup element that converts an optical image formed with the zoom lens into an electric signal;...
7457050 Zoom lens system for use with small electronic sensor  
A five-element 3:1 zoom lens system in which the first lens group has a negative power and includes two lens elements and the second lens group has a positive power and includes a pair of lens...
7450320 Zoom lens  
A zoom lens includes a first lens group with a negative refractive power and a second lens group with a positive refractive power, wherein the second lens group is disposed between the first lens...
7440196 Image forming optical system and image pickup apparatus using the same  
An image forming optical system comprising: a first positive lens unit disposed closest to the object side in the image forming optical system; an aperture stop; and a second positive lens unit...
7436601 Two-group zoom lens and an electronic imaging apparatus having it  
The two-group zoom lens comprises in order from the object side, the first negative lens group, and the second positive lens group. Change of magnification from a wide angle end to a telephoto end...
7423812 Zoom lens and projector employing zoom lens  
In a thin projector for projecting an image from a light valve such as a DMD, a compact zoom lens comprises, in order, a first lens group having a negative refractive power, a second lens group...
7420611 Electronic image pickup system  
The invention makes a suitable selection from zoom modes and lens elements so thin that the thickness of each lens group can reduced, thereby slimming down a zoom lens with great thoroughness and,...
7414665 Imaging system  
The invention relates to an imaging system in which, while high image quality is maintained with the influence of diffraction minimized, the quantity of light is controlled, and which enables the...
7405889 Optical system and imaging system incorporating it  
The invention relates to an optical system that is capable of providing a zoom lens having improved image-formation capability with a reduced number of lenses, and fabricating a slim yet...
7405887 Zoom lens and imaging device using zoom lens  
The present invention is directed to a zoom lens used for image pick-up optical system of digital still camera, or video camera, and is composed, in order from the object side, of a first group GR...
7403341 Zoom lens system and electronic image pickup apparatus using the same  
A zoom lens system comprising, in order from an object side: a first lens unit comprising two lens components; and a second lens unit comprising one lens component, during zooming, a space between...
7400455 Zoom lens system and display apparatus  
A zoom lens system that has two lens groups with respectively negative and positive refractive powers in that order from a display medium, such as a screen, side is provided. The first lens group...
7375900 Variable power optical system and image pickup apparatus  
An object of the present invention is to provide a compact size variable power optical system capable of producing a high quality image. The variable power optical system comprises a plurality of...
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...
7359125 Two-lens-group zoom lens system  
Providing a two-lens-group zoom lens system that has a wide angle of view, a fast aperture ratio with an f-number of about 2.8, a high zoom ratio, and high optical performance, and is easy to be...
7339750 Focusing a laser beam  
A device for focusing a laser beam includes a first telescopic configuration and a second telescopic configuration. The first telescopic configuration includes a collimating optical element for...
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...
7336304 Digital camera with zoom lens  
A zoom lens including front and rear elements, the front elements is set up so that the front elements are disposed at a position to satisfy the formula: T 1 ≥ Ha 1 + HH 1 + L + HH 2 + f 2 ⁡...
7310192 Zoom lens  
A zoom lens is equipped with: a first lens group having an overall negative refractive power and a second lens group having an overall positive refractive power in sequence from the object side to...
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...
7289152 Electronic image pickup system including a zoom lens and an electronic image pickup device located on an image plane side of the zoom lens  
The invention makes a suitable selection from zoom modes and lens elements so thin that the thickness of each lens group can reduced, thereby slimming down a zoom lens with great thoroughness and,...
7277232 Zoom lens system  
An object is to provide a zoom lens system having compactness of about a normal lens, small number of lens elements, a zoom ratio about 2.9, good productivity, and high optical performance. The...
7265912 Variable power optical system, imaging apparatus, and digital apparatus  
A small high-definition variable power optical system having a variable power ratio of about two to three times; an imaging apparatus including the variable power optical system; and digital...
7242533 Two-unit zoom lens system, and exchangeable lens and electronic image taking apparatus using the zoom lens system  
A two-unit zoom lens system which comprises a negative first lens unit G 1 and a positive second lens unit G 2 , during change of magnification from a wide-angle end to a telephoto end, the first...
7236309 Bifocal double group lens assembly  
A bifocal double group lens assembly, sequentially from the object side, comprises: a stationary first lens group with a negative refractive power, a second lens group with a positive refractive...
7227700 Wide zoom lens system  
Providing a wide zoom lens system having a wide angle of view in the wide-angle end state and a high speed aperture ratio suitable for a solid-state imaging device with securing high optical...
7215493 Imaging system with a lens having increased light collection efficiency and a deblurring equalizer  
In one form, an imaging system comprises an imager that forms an image of an object in a field of view, a rotationally symmetric lens assembly disposed between the imager and the object, and an...
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...
7209297 Soft zoom lens system  
A soft zoom lens system includes an axially expandable or shrinkable holding portion, a supporting portion, a first lens and a second lens. This holding portion has an inner space, a first end and...
7184220 Projection zoom lens and projector  
A projection zoom lens that is suited to projector with a DMD is provided. The projection zoom lens projects, onto a screen, projection light from the DMD and comprises, in order from a screen...
Matches 1 - 50 out of 238 1 2 3 4 5 >