| |
 |
|
Class Information
Number: 359/674
Name: Optical: systems and elements > Lens > Selective magnification by exchanging or adding a lens component > To the middle of a basic lens
Description: Subject matter wherein a lens component is exchanged or added to the center of a basic lens for selective magnification.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7382556 |
Lens module |
Jun. 3, 2008 |
| 7289272 |
Optical system including an anamorphic lens |
Oct. 30, 2007 |
| 7236305 |
Zoom lens and image pickup apparatus having the same |
Jun. 26, 2007 |
| 7218444 |
Dual-band, dual-focal-length, relayed refractive imager |
May. 15, 2007 |
| 7170689 |
Front converter lens |
Jan. 30, 2007 |
| 7133219 |
Telescopic sighting device with variable exit pupil |
Nov. 7, 2006 |
| 7057827 |
Zoom lens and pickup system |
Jun. 6, 2006 |
| 6989942 |
Zoom lens and photographing apparatus having the same |
Jan. 24, 2006 |
| 6160668 |
Optical systems |
Dec. 12, 2000 |
| 6124981 |
Attachment lens having diffraction surface |
Sep. 26, 2000 |
| 6104546 |
Athermalized focal length extender for a zoom lens having a split rear image-forming group |
Aug. 15, 2000 |
| 6004486 |
Photochromic spiroxazines with asymmetric monocyclic substituent, compositions and articles containing them |
Dec. 21, 1999 |
| 5861987 |
Stereoscopic-vision endoscope offering a large angle of introversion and a necessary and sufficient sense of three-dimensionality |
Jan. 19, 1999 |
| 5808063 |
Photochromic spiro(indoline) fluoranthenoxazine compounds |
Sep. 15, 1998 |
| 5781347 |
Optical device |
Jul. 14, 1998 |
| 5745298 |
Zoom lens system |
Apr. 28, 1998 |
| 5668666 |
Zoom lens with an anamorphic converter |
Sep. 16, 1997 |
| 5589976 |
Telescope with rear converter and rear conversion lens and telescope |
Dec. 31, 1996 |
| 5513042 |
Lens system with master lens system and conversion lens |
Apr. 30, 1996 |
| 5495367 |
Vari-focal viewfinder optical system |
Feb. 27, 1996 |
| 5481404 |
Zoom lens having super wide angle |
Jan. 2, 1996 |
| 5452133 |
Variator optical system |
Sep. 19, 1995 |
| 5408361 |
Focal length transitional method, auxiliary lens for transiting focal lengths, and lens system and finder having focal length transitional function |
Apr. 18, 1995 |
| 5329400 |
Focal length changeable lens |
Jul. 12, 1994 |
| 5229880 |
Three field of view refractive afocal telescope |
Jul. 20, 1993 |
| 5103342 |
Apochromatic lens system |
Apr. 7, 1992 |
| 5097360 |
Zoom lens capable of changing a range of variable focal length |
Mar. 17, 1992 |
| 5013142 |
Bifocal optical system |
May. 7, 1991 |
| 4988173 |
Modular afocal variator optical focusing system |
Jan. 29, 1991 |
| 4715692 |
Varifocal type finder |
Dec. 29, 1987 |
| 4708442 |
Varifocal lens system |
Nov. 24, 1987 |
| 4668054 |
Vari-focal photographic lens system of lens group exchange type |
May. 26, 1987 |
| 4596447 |
Conversion type varifocal lens system |
Jun. 24, 1986 |
| 4469396 |
Afocal dual magnification refractor telescopes |
Sep. 4, 1984 |
| 4466707 |
Variable magnification lens system |
Aug. 21, 1984 |
| 4427268 |
Variable magnification ratio lens |
Jan. 24, 1984 |
| 4330180 |
Zoom lens system having a plural number of relay lenses |
May. 18, 1982 |
| 4318592 |
Lens system with attachment lens removably attached |
Mar. 9, 1982 |
| 4240697 |
Lens system having selectively shiftable focal length |
Dec. 23, 1980 |
| 4157211 |
Zoom lens having an easily changeable range of variable focal distance |
Jun. 5, 1979 |
| 4146305 |
Variable lens which can have its focal distance range easily changed |
Mar. 27, 1979 |
| RE29856 |
Projection lens for mask pattern printing |
Dec. 5, 1978 |
|
|
|
