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Class Information
Number: 359/742
Name: Optical: systems and elements > Lens > With multipart element > Echelon (e.g., fresnel lens, etc.)
Description: Subject matter wherein at least one of the refracting surfaces of the lens is discontinuous, being formed of a plurality of stepped refracting surfaces connecting at their adjacent edges by other surfaces which extend substantially parallel to the intended direction of light travel through the lens, the surfaces being so shaped and arranged that they form in conjunction with the opposed refracting surface of the lens, a plurality of lenses all of which have a common focus.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7618161 |
Fresnel lens and lighting apparatus provided with the Fresnel lens |
Nov. 17, 2009 |
| 7616549 |
Chromatic aberration-correcting element and optical pickup device using the same |
Nov. 10, 2009 |
| 7599128 |
Imaging lens |
Oct. 6, 2009 |
| 7589917 |
Collimating fresnel lens with diffuser appearance |
Sep. 15, 2009 |
| 7580196 |
Liquid solar lens |
Aug. 25, 2009 |
| 7580204 |
Method for manufacturing lenses, in particular for an imager comprising a diaphragm |
Aug. 25, 2009 |
| 7565076 |
Lens module with grating |
Jul. 21, 2009 |
| 7535637 |
Fresnel lens sheet, transmission type screen and rear projection type display apparatus |
May. 19, 2009 |
| 7531790 |
Image sensor and method for fabricating the same |
May. 12, 2009 |
| 7529023 |
Image display, Fresnel lens and screen |
May. 5, 2009 |
| 7529028 |
Image display apparatus |
May. 5, 2009 |
| 7529039 |
Object lens device with high numerical aperture and optical pickup device adopting the same |
May. 5, 2009 |
| 7502178 |
Multiple wavelength and multiple field of view imaging devices and methods |
Mar. 10, 2009 |
| 7499094 |
Solid state imaging device including annular and center lens in contact with each other |
Mar. 3, 2009 |
| 7492534 |
Imaging optical system including optical element having discontinuous plane |
Feb. 17, 2009 |
| 7484871 |
Single lens for LED signal light |
Feb. 3, 2009 |
| 7483220 |
Optical arrangement with stepped lens |
Jan. 27, 2009 |
| 7460301 |
Image display apparatus, and transmissive screen and reflecting mirror used for same |
Dec. 2, 2008 |
| 7453638 |
Fresnel lens sheet, rear projection screen, and rear-projection-type display |
Nov. 18, 2008 |
| 7440186 |
Screen, a fresnel lens sheet used for the screen, and an image display apparatus using the screen |
Oct. 21, 2008 |
| 7433105 |
Decorative film, carton, and method of making |
Oct. 7, 2008 |
| 7414787 |
Phase contrast microscope for short wavelength radiation and imaging method |
Aug. 19, 2008 |
| 7391580 |
Ultra compact mono-bloc catadioptric imaging lens |
Jun. 24, 2008 |
| 7365919 |
Forming methods, forming devices for articles having a micro-sized shape and optical elements |
Apr. 29, 2008 |
| 7365918 |
Fast x-ray lenses and fabrication method therefor |
Apr. 29, 2008 |
| 7365909 |
Fabrication methods for micro compounds optics |
Apr. 29, 2008 |
| 7362486 |
Optical scanning device with at least one resin lens for controlling a beam waist position shift |
Apr. 22, 2008 |
| 7342728 |
Fresnel lens, backprojection screen, and corresponding backprojection system and unit |
Mar. 11, 2008 |
| 7339733 |
Fresnel lens sheet and rear projection screen using it |
Mar. 4, 2008 |
| 7309149 |
Prism sheet, backlight assembly and liquid crystal display device having the same |
Dec. 18, 2007 |
| 7310473 |
Optical antenna and wireless optical system using the same |
Dec. 18, 2007 |
| 7307107 |
Photopolymerizable composition and use thereof |
Dec. 11, 2007 |
| 7298533 |
Optical films for creating unique optical effects |
Nov. 20, 2007 |
| 7253954 |
Flat valley fresnel lens |
Aug. 7, 2007 |
| 7251084 |
Fresnel lens and an illuminating device provided with the Fresnel lens |
Jul. 31, 2007 |
| 7245439 |
Variable lens |
Jul. 17, 2007 |
| 7245429 |
Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet |
Jul. 17, 2007 |
| 7242536 |
Fresnel optical element and projection display device |
Jul. 10, 2007 |
| 7236313 |
Ring zonal phase correction lens and optical system and optical head device |
Jun. 26, 2007 |
| 7221513 |
Hybrid achromatic optical lens and method for manufacturing the same |
May. 22, 2007 |
| 7206142 |
Refractive spectrum splitting concentrator system |
Apr. 17, 2007 |
| 7196845 |
Fresnel lens sheet and rear projection screen |
Mar. 27, 2007 |
| 7190531 |
Concentrating type solar collection and daylighting system within glazed building envelopes |
Mar. 13, 2007 |
| 7185464 |
Tubular skylight for lighting rooms with natural light |
Mar. 6, 2007 |
| 7167307 |
Projection screen, and projection type display system |
Jan. 23, 2007 |
| 7167308 |
System for eliminating secondary images in rear projection systems |
Jan. 23, 2007 |
| 7161747 |
One piece clear plastic cardholder, cardholder shaped fresnel magnifying lens and method of making the same |
Jan. 9, 2007 |
| 7158298 |
Rear projection screen and diffusing sheet |
Jan. 2, 2007 |
| 7151639 |
Thin-type spherical lens |
Dec. 19, 2006 |
| 7133223 |
Optical element, method of molding optical element, and mold |
Nov. 7, 2006 |
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