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Browse by Category: Main > Optical & Optics
Class Information
Number: 359/432
Name: Optical: systems and elements > Compound lens system > Variable magnification
Description: Subject matter wherein the compound lens system continuously varies the size of a terminal image while the object distance remains constant.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8712232 Real-image zoom viewfinder and imaging apparatus Apr. 29, 2014
8705173 Optical rangefinder and reticle system for variable optical power sighting devices Apr. 22, 2014
8634132 Objective changer having reflected light illumination for light microscopes Jan. 21, 2014
8446676 Head-mounted display device May. 21, 2013
8432610 Multi-magnification viewing and aiming scope Apr. 30, 2013
8422130 Portable magnifying instrument useful for colposcopy Apr. 16, 2013
8254023 Optical tomography system with high-speed scanner Aug. 28, 2012
8218233 Light source optical system Jul. 10, 2012
8184367 Dynamically focused optical instrument May. 22, 2012
8184368 Extreme broadband compact optical system with multiple fields of view May. 22, 2012
8169717 Large aperture imaging optical systems May. 1, 2012
8102585 Functionalized security glazing Jan. 24, 2012
8064133 Light receiving optical system, and spectrophotometer incorporated with the same Nov. 22, 2011
7952799 Extreme broadband compact optical system with multiple fields of view May. 31, 2011
7944611 High zoom ratio optical sighting device May. 17, 2011
7901352 Endoscope apparatus Mar. 8, 2011
7869125 Multi-magnification viewing and aiming scope Jan. 11, 2011
7821705 Zoom microscope including an image-acquisition optical path and an observation optical path Oct. 26, 2010
7791816 Zoom lens and image taking apparatus Sep. 7, 2010
7768703 Dual field of view sighting system Aug. 3, 2010
7768715 Whole system zoom and varifocal lens with intermediate image Aug. 3, 2010
7733581 Large aperture imaging optical system Jun. 8, 2010
7684115 Telescope with variable magnification Mar. 23, 2010
7649693 Zoom lens and image pick-up apparatus Jan. 19, 2010
7623306 Zoom lens and imaging apparatus incorporating the same Nov. 24, 2009
7599115 Raster microscope Oct. 6, 2009
7589905 Optical system and optical apparatus including the same Sep. 15, 2009
7586682 Zoom lens and imaging apparatus Sep. 8, 2009
7476873 Microscope system Jan. 13, 2009
7403331 Correct image zoomable reflecting telescope with near stationary eyepiece Jul. 22, 2008
7369306 Image reversion system, ancillary ophthalmoscopy module and surgical microscope May. 6, 2008
7345836 Zoom lens driving apparatus Mar. 18, 2008
7321108 Dynamic focusing method and apparatus Jan. 22, 2008
7227682 Wide-range, wide-angle compound zoom with simplified zooming structure Jun. 5, 2007
7224535 Zoom lens system May. 29, 2007
7218430 Combinatorial optical processor May. 15, 2007
7206129 Real image type zoom finder, and imaging system incorporating the same Apr. 17, 2007
7184208 Variable power finder and imaging apparatus Feb. 27, 2007
7159988 Projection optical unit and projection image display apparatus Jan. 9, 2007
7126753 Two-stage variable power binoculars Oct. 24, 2006
7099077 Optical system having three fields of view using two all-reflective optical modules Aug. 29, 2006
7085048 Real image type variable magnification finder and imaging apparatus using the same Aug. 1, 2006
7072086 Digital focus lens system Jul. 4, 2006
7057818 Zoom lens and optical apparatus having the same Jun. 6, 2006
6992821 Variable power finder and imaging apparatus Jan. 31, 2006
6985289 Variable power finder and imaging apparatus Jan. 10, 2006
6967775 Zoom dot sighting system Nov. 22, 2005
6961188 Zoom lens system Nov. 1, 2005
6900946 Zoom system, in particular, a zoom system for an illumination device of a microlithographic projection system May. 31, 2005
6898022 Stereo optical system pair for stereo endoscope system May. 24, 2005

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