Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Optical & Optics
Class Information
Number: 359/749
Name: Optical: systems and elements > Lens > Reverse telephoto
Description: Subject matter wherein the lens is designed with the effective focal length equal to or less than the distance from the last refracting surface to the focal plane, i.e., the back focal length is equal to or greater than the effective focal length.










Sub-classes under this class:

Class Number Class Name Patents
359/750 With eight components 62
359/753 With five or less components 258
359/751 With seven components 60
359/752 With six components 58


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8665537 Modified retrofocus-type wide-angle lens Mar. 4, 2014
8666697 Light condensing lens and three-dimensional distance measuring apparatus Mar. 4, 2014
8659841 Superwide-angle lens system Feb. 25, 2014
8638507 Fisheye lens system and photographing apparatus Jan. 28, 2014
8587873 Wide-angle projection lens for projection display systems Nov. 19, 2013
8582217 Optical system for endoscope Nov. 12, 2013
8531785 Prime lens for a projector Sep. 10, 2013
8493663 Optical system and optical apparatus having the same Jul. 23, 2013
8456761 Lens system Jun. 4, 2013
8451548 Projection lens system with high resolution and compact size May. 28, 2013
8422143 Retrofocus wide-angle lens system and optical instrument provided with the same Apr. 16, 2013
8369030 Image forming lens, camera device, and handheld terminal Feb. 5, 2013
8331042 Imaging lens and imaging apparatus Dec. 11, 2012
8320050 Zoom lens and image pickup apparatus including the same Nov. 27, 2012
8284501 Optical imaging system, camera device, and hand-held data terminal device Oct. 9, 2012
8279527 Wide-angle projection optical system Oct. 2, 2012
8264783 Wide-angle lens system having short overall length Sep. 11, 2012
8254040 Super-wide-angle lens system and imaging module having same Aug. 28, 2012
8248714 Projection lens system with high resolution and compact size Aug. 21, 2012
8243129 Objective lens and endoscope apparatus Aug. 14, 2012
8238043 Imaging lens system and imaging apparatus Aug. 7, 2012
8237842 Wide-angle lens and imaging apparatus equipped therewith Aug. 7, 2012
8218252 Projection lens Jul. 10, 2012
8213096 Imaging lens and imaging apparatus Jul. 3, 2012
8179617 Photographic lens and image pickup apparatus having the same May. 15, 2012
8169717 Large aperture imaging optical systems May. 1, 2012
8134787 Super-wide angle lens Mar. 13, 2012
8000035 Wide-angle lens, optical apparatus, and method for focusing Aug. 16, 2011
7974015 Wide-angle compound-eye imaging device Jul. 5, 2011
7952817 Projection lens May. 31, 2011
7946717 Projection optical system and image projecting apparatus May. 24, 2011
7944623 Fixed-focus lens May. 17, 2011
7944625 Optical system and image pickup apparatus having the same May. 17, 2011
7929221 Ultra-wide angle objective lens Apr. 19, 2011
7869140 Objective lens design for miniature endoscope Jan. 11, 2011
7859770 Fixed-focus lens Dec. 28, 2010
7782551 Wide-angle image pick-up lens system and vehicle with same Aug. 24, 2010
7760444 Imaging optical system and image pickup apparatus using the same Jul. 20, 2010
7751128 Wide-angle lens Jul. 6, 2010
7742243 Projection lens with high resolution and reduced overall length Jun. 22, 2010
7733581 Large aperture imaging optical system Jun. 8, 2010
7715117 Optical system and image pickup apparatus using the same May. 11, 2010
7697210 Wide-angle objective lens system and camera Apr. 13, 2010
7677738 Image projector Mar. 16, 2010
7672065 Lens system and projector utilizing the same Mar. 2, 2010
7656591 Retrofocus lens system and image-taking device Feb. 2, 2010
7633688 Image forming optical system Dec. 15, 2009
7623305 Image capturing lens and imaging apparatus Nov. 24, 2009
7605985 Projection zoom lens and projection type display device Oct. 20, 2009
7595938 Wide-angle imaging lens, imaging device and camera module Sep. 29, 2009

1 2 3 4










 
 
  Recently Added Patents
Semiconductor device
Trash receptacle
Method and apparatus for closed-loop control of anti-tachyarrhythmia pacing using hemodynamic sensor
Recombinant negative strand virus RNA expression systems and vaccines
Watch dial
Process for producing a carbon-comprising support
Combination therapy to enhance NK cell mediated cytotoxicity
  Randomly Featured Patents
Nickel-base superalloy article with rhenium-containing protective layer, and its preparation
U-lock cross brace
Apparatus for determining image processing parameter, method of the same, and computer program product for realizing the method
Non-contact electric power transmission apparatus
Hand-held electrical beater-mixer preventing concomitant emplacement of accessories
Multilayer film core magnetic head with bonding glasses of differing thermal expansion coefficients
Computer system, control method thereof and data processing apparatus
Micromachined self packaged circuits for high-frequency applications
Steam turbine
N-[4-Azido-5-(2-ethoxyethyl)-6-phenyl-2-pyrimidinyl]acetamide and congeners