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Class Information
Number: 359/681
Name: Optical: systems and elements > Lens > With variable magnification (e.g., zoom type) > Reverse telephoto > Having eight or nine components
Description: Subject matter wherein the reverse telephoto lens comprises eight or nine sections (i.e., components), each containing two refractive surfaces arranged in series along the optical axis of the lens with their optical centers in alignment thereon, their planes perpendicular to such axis and their axially extreme refracting surfaces so spaced along the optical axis that parallel light rays upon entering and passing through all of such components are refracted to a focus no more than one time.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7605985 |
Projection zoom lens and projection type display device |
Oct. 20, 2009 |
| 7576923 |
Zoom lens and image projection apparatus having the same |
Aug. 18, 2009 |
| 7505211 |
Photographic wide angle zoom objective of the retrofocus type |
Mar. 17, 2009 |
| 7466494 |
Compact zoom lens |
Dec. 16, 2008 |
| 7463425 |
Zoom lens system |
Dec. 9, 2008 |
| 7457045 |
Zoom lens |
Nov. 25, 2008 |
| 7405885 |
Zoom lens |
Jul. 29, 2008 |
| 7365912 |
Compact zoom lens |
Apr. 29, 2008 |
| 7324289 |
Zoom lens system |
Jan. 29, 2008 |
| 7317581 |
Fisheye lens system and a fisheye zoom lens system |
Jan. 8, 2008 |
| 7218455 |
Zoom lens and imaging apparatus |
May. 15, 2007 |
| 7215477 |
Zoom lens and image display apparatus including the zoom lens |
May. 8, 2007 |
| 7133215 |
Varifocal zoom lens and camera system |
Nov. 7, 2006 |
| 7106520 |
Wide-angle zoom lens system |
Sep. 12, 2006 |
| 7079324 |
Zoom lens and image projection apparatus including the same |
Jul. 18, 2006 |
| 7075730 |
Zoom lens system and image pickup apparatus including the same |
Jul. 11, 2006 |
| 7075729 |
Zooming lens |
Jul. 11, 2006 |
| 7075733 |
Zoom lens system and image pickup apparatus including the same |
Jul. 11, 2006 |
| 7061685 |
Zoom lens system |
Jun. 13, 2006 |
| 7009779 |
Macro lens |
Mar. 7, 2006 |
| 6943958 |
Zoom lens system and camera using the same |
Sep. 13, 2005 |
| 6809879 |
Zoom lens, and electronic imaging system using the same |
Oct. 26, 2004 |
| 6785055 |
Zoom lens system |
Aug. 31, 2004 |
| 6744564 |
Zoom lens, and electronic imaging system using the same |
Jun. 1, 2004 |
| 6738196 |
Zoom lens with distortion correction and projection optical apparatus using it |
May. 18, 2004 |
| 6687059 |
Zoom lens |
Feb. 3, 2004 |
| 6671103 |
Zoom lens and optical apparatus using the same |
Dec. 30, 2003 |
| 6633436 |
Optical system, projection optical system, image projection apparatus having it, and image pickup apparatus |
Oct. 14, 2003 |
| 6621643 |
Zoom lens system |
Sep. 16, 2003 |
| 6590716 |
Projection zoom lens |
Jul. 8, 2003 |
| 6522476 |
Three-group zoom lens |
Feb. 18, 2003 |
| 6421186 |
Zoom lens system |
Jul. 16, 2002 |
| 6327098 |
Wide-angle zoom lens system |
Dec. 4, 2001 |
| 6246529 |
Wide-angle zoom lens system |
Jun. 12, 2001 |
| 6243213 |
Zoom lens and camera having the zoom lens |
Jun. 5, 2001 |
| 6222680 |
Zoom lens |
Apr. 24, 2001 |
| 6175453 |
Zoom lens |
Jan. 16, 2001 |
| 6078435 |
Zoom lens system |
Jun. 20, 2000 |
| 6025960 |
Zoom optical system |
Feb. 15, 2000 |
| 5969878 |
Zoom lens system |
Oct. 19, 1999 |
| 5877901 |
Super wide-angle zoom lens |
Mar. 2, 1999 |
| 5831773 |
Zoom lens |
Nov. 3, 1998 |
| 5539581 |
Zoom lens system |
Jul. 23, 1996 |
| 5247393 |
Zoom lens |
Sep. 21, 1993 |
| 5179473 |
Zoom lens |
Jan. 12, 1993 |
| 5157552 |
Zoom lens system for a limited conjugate distance |
Oct. 20, 1992 |
| 4781446 |
Zoom lens having a capability of introducing special features into image formats |
Nov. 1, 1988 |
| 4735493 |
Wipe-angle zoom lens system |
Apr. 5, 1988 |
| 4733952 |
Small zoom lens |
Mar. 29, 1988 |
| 4730907 |
Compact zoom lens system |
Mar. 15, 1988 |
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