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Class Information
Number: 359/736
Name: Optical: systems and elements > Lens > With reflecting element > Multiple component lenses > Two components
Description: Subject matter wherein the lens comprises two 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 |
| 7573654 |
Dual focal length lens system |
Aug. 11, 2009 |
| 7570438 |
Optical apparatus with off-axis direction-of-view |
Aug. 4, 2009 |
| 7463433 |
Optical lens assembly |
Dec. 9, 2008 |
| 7405887 |
Zoom lens and imaging device using zoom lens |
Jul. 29, 2008 |
| 7170687 |
Projection lens system and projector |
Jan. 30, 2007 |
| 6980375 |
Objective lens system |
Dec. 27, 2005 |
| 6515809 |
Fixed focal length lens system |
Feb. 4, 2003 |
| 5999334 |
Fixed focal length lens system |
Dec. 7, 1999 |
| 5734500 |
Binocular with extended monocular field |
Mar. 31, 1998 |
| 5712735 |
Catadioptric reduction projection optical system |
Jan. 27, 1998 |
| 5673135 |
Scanning projection optical device |
Sep. 30, 1997 |
| 5668672 |
Catadioptric system and exposure apparatus having the same |
Sep. 16, 1997 |
| 5552938 |
Projection device for projecting an original image onto a screen |
Sep. 3, 1996 |
| 5448416 |
Wide-field exposure optical system |
Sep. 5, 1995 |
| 5278695 |
Magnifier |
Jan. 11, 1994 |
| 5159495 |
Graded index optical elements and catadioptric optical systems |
Oct. 27, 1992 |
| 4783156 |
Optical system for altering the direction of the visual field in endoscopes |
Nov. 8, 1988 |
| 4664515 |
Optical system of a radiation thermometer |
May. 12, 1987 |
| 4593984 |
Viewfinder lens system |
Jun. 10, 1986 |
| 4578710 |
Lens system for projection television |
Mar. 25, 1986 |
| 4557591 |
Photographic printing apparatus |
Dec. 10, 1985 |
| 4437750 |
Adjustable diopter type finder optical system |
Mar. 20, 1984 |
| 4015896 |
Reflecting-lens objective |
Apr. 5, 1977 |
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