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Class Information
Number: 359/691
Name: Optical: systems and elements > Lens > With variable magnification (e.g., zoom type) > With mechanical compensation > Two groups
Description: Subject matter wherein two groups move independently of each other and these groups function respectively as (1) a variator movable for varying the focal length and (2) a compensator which moves independently of the first group for compensating for image plane deviation during focal length variation.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619831 |
Zoom lens and projector unit |
Nov. 17, 2009 |
| 7619832 |
Imaging apparatus |
Nov. 17, 2009 |
| 7609458 |
Projection apparatus, elevation angle control method therefor and recording medium |
Oct. 27, 2009 |
| 7599127 |
Zoom lens system |
Oct. 6, 2009 |
| 7580194 |
Projection lens with high resolution and reduced overall length |
Aug. 25, 2009 |
| 7576924 |
Two-unit zoom lens system and image pickup apparatus using the same |
Aug. 18, 2009 |
| 7576923 |
Zoom lens and image projection apparatus having the same |
Aug. 18, 2009 |
| 7573647 |
Optical unit and image capturing apparatus including the same |
Aug. 11, 2009 |
| 7564617 |
Short infrared zoom lens system |
Jul. 21, 2009 |
| 7554748 |
Zoom lens system |
Jun. 30, 2009 |
| 7548380 |
Zoom lens |
Jun. 16, 2009 |
| 7542213 |
Projecting zoom lens and projection display device |
Jun. 2, 2009 |
| 7542215 |
Zoom lens system and optical apparatus using the same |
Jun. 2, 2009 |
| 7542219 |
Intermediate telephoto lens system |
Jun. 2, 2009 |
| 7535660 |
Imaging lens |
May. 19, 2009 |
| 7532411 |
High zoom ratio zoom lens system |
May. 12, 2009 |
| 7522350 |
Zoom lens system and image pickup apparatus including the same |
Apr. 21, 2009 |
| 7505211 |
Photographic wide angle zoom objective of the retrofocus type |
Mar. 17, 2009 |
| 7486451 |
Imaging lens |
Feb. 3, 2009 |
| 7477454 |
Digital camera and mobile information terminal apparatus |
Jan. 13, 2009 |
| 7466495 |
Image pickup apparatus and zoom lens |
Dec. 16, 2008 |
| 7466500 |
Lens unit and image pickup apparatus |
Dec. 16, 2008 |
| 7457054 |
Imaging lens |
Nov. 25, 2008 |
| 7457050 |
Zoom lens system for use with small electronic sensor |
Nov. 25, 2008 |
| 7450320 |
Zoom lens |
Nov. 11, 2008 |
| 7440196 |
Image forming optical system and image pickup apparatus using the same |
Oct. 21, 2008 |
| 7436601 |
Two-group zoom lens and an electronic imaging apparatus having it |
Oct. 14, 2008 |
| 7423812 |
Zoom lens and projector employing zoom lens |
Sep. 9, 2008 |
| 7420611 |
Electronic image pickup system |
Sep. 2, 2008 |
| 7417684 |
Electronic image pickup system |
Aug. 26, 2008 |
| 7414665 |
Imaging system |
Aug. 19, 2008 |
| 7405887 |
Zoom lens and imaging device using zoom lens |
Jul. 29, 2008 |
| 7405885 |
Zoom lens |
Jul. 29, 2008 |
| 7405889 |
Optical system and imaging system incorporating it |
Jul. 29, 2008 |
| 7403341 |
Zoom lens system and electronic image pickup apparatus using the same |
Jul. 22, 2008 |
| 7400455 |
Zoom lens system and display apparatus |
Jul. 15, 2008 |
| 7382551 |
Zoom lens system and image-pickup apparatus including same |
Jun. 3, 2008 |
| 7375900 |
Variable power optical system and image pickup apparatus |
May. 20, 2008 |
| 7369325 |
High zoom ratio zoom lens system |
May. 6, 2008 |
| 7362509 |
Zoom lens |
Apr. 22, 2008 |
| 7359125 |
Two-lens-group zoom lens system |
Apr. 15, 2008 |
| 7339744 |
Electronic imaging apparatus |
Mar. 4, 2008 |
| 7339750 |
Focusing a laser beam |
Mar. 4, 2008 |
| 7336304 |
Digital camera with zoom lens |
Feb. 26, 2008 |
| 7310192 |
Zoom lens |
Dec. 18, 2007 |
| 7295381 |
Zoom lens and image pickup apparatus having the same |
Nov. 13, 2007 |
| RE39911 |
Wide field of view projection lenses for compact projection lens systems employing pixelized panels |
Nov. 6, 2007 |
| 7289273 |
Zoom lens and electronic imaging apparatus having the same |
Oct. 30, 2007 |
| 7289152 |
Electronic image pickup system including a zoom lens and an electronic image pickup device located on an image plane side of the zoom lens |
Oct. 30, 2007 |
| 7280284 |
Zoom lens |
Oct. 9, 2007 |
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