| |
 |
|
Class Information
Number: 359/568
Name: Optical: systems and elements > Diffraction > From grating > For diffractive subtractive filtering
Description: Subject matter wherein diffraction gratings are used to diffractively remove unwanted spectral wavelengths from polychromatic incident light.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7576926 |
Spill light removing device |
Aug. 18, 2009 |
| 7573640 |
Multi-plane optical apparatus |
Aug. 11, 2009 |
| 7545577 |
Zoom lens and image pickup apparatus including the same |
Jun. 9, 2009 |
| 7443586 |
Display device using single-panel diffractive light modulator |
Oct. 28, 2008 |
| 7428100 |
Wide-angle beam steering system |
Sep. 23, 2008 |
| 7286285 |
Surgical microscope having an object field illumination system |
Oct. 23, 2007 |
| 7265904 |
Optical security element |
Sep. 4, 2007 |
| 7215472 |
Wide-angle beam steering system |
May. 8, 2007 |
| 7206107 |
Method and system for beam expansion in a display device |
Apr. 17, 2007 |
| 7181106 |
Optical fiber capped at end with diffractive film, and manufacturing method therefor |
Feb. 20, 2007 |
| 7133205 |
Atmospheric stabilizer filter and method |
Nov. 7, 2006 |
| 6815065 |
All-dielectric optical diffractive pigments |
Nov. 9, 2004 |
| 6809864 |
Multi-layer structure with variable bandpass for monochromatization and spectroscopy |
Oct. 26, 2004 |
| 6788713 |
Reduction of pulsations in DFB lasers |
Sep. 7, 2004 |
| 6768588 |
Apparatus and methods for generating multiple exit-pupil images in an expanded exit pupil |
Jul. 27, 2004 |
| 6690500 |
Aberration correction apparatus and method |
Feb. 10, 2004 |
| 6568841 |
Illumination unit for a device having a multi-color reflective liquid crystal display |
May. 27, 2003 |
| 6507419 |
Illumination system using optical feedback |
Jan. 14, 2003 |
| 6469827 |
Diffraction spectral filter for use in extreme-UV lithography condenser |
Oct. 22, 2002 |
| 6359681 |
Combined laser/FLIR optics system |
Mar. 19, 2002 |
| 6156412 |
Diffractive fabric |
Dec. 5, 2000 |
| 6151564 |
Coded object system and code recognition methods |
Nov. 21, 2000 |
| 6094306 |
Energy efficient window |
Jul. 25, 2000 |
| 5828491 |
Phase plate technology for laser marking of magnetic discs |
Oct. 27, 1998 |
| 5726805 |
Optical filter including a sub-wavelength periodic structure and method of making |
Mar. 10, 1998 |
| 5712622 |
Intrusion detector |
Jan. 27, 1998 |
| 5699186 |
Multi-fold optical magnifier for use in image manifestation apparatus |
Dec. 16, 1997 |
| 5608572 |
Optical apparatus and a method using the apparatus, which utilizes the occurrence of a change in a both-end voltage of an amplifying region |
Mar. 4, 1997 |
| 5600486 |
Color separation microlens |
Feb. 4, 1997 |
| 5583689 |
Filter with preselected attenuation/wavelength characteristic |
Dec. 10, 1996 |
| 5539544 |
Holographic filter for protection from radiation, notably laser radiation |
Jul. 23, 1996 |
| 5471344 |
Photographing apparatus having optical low-pass filter |
Nov. 28, 1995 |
| 5469520 |
Compression-tuned fiber grating |
Nov. 21, 1995 |
| 5396368 |
Flexible rejection filter (U) |
Mar. 7, 1995 |
| 5337180 |
Optical signal dependent noise reduction by variable spatial thresholding of the fourier transform |
Aug. 9, 1994 |
| 5264957 |
Electrically controlled multiple dispersion (zoom) device |
Nov. 23, 1993 |
| 5262893 |
Method and apparatus for creating multiple phase level optical elements |
Nov. 16, 1993 |
| 5202794 |
Attenuator for a laser beam |
Apr. 13, 1993 |
| 5103324 |
Method for fabricating holographic filters |
Apr. 7, 1992 |
| 4998800 |
Optical low pass filter |
Mar. 12, 1991 |
| 4971409 |
Real-time optical image subtraction |
Nov. 20, 1990 |
| 4915463 |
Multilayer diffraction grating |
Apr. 10, 1990 |
| 4832445 |
Security diffraction devices difficult to exactly duplicate |
May. 23, 1989 |
| 4823357 |
Diffraction limited dichroic combiner diode laser |
Apr. 18, 1989 |
| 4776669 |
Optical path sensor including a filter |
Oct. 11, 1988 |
| 4661983 |
Secure document identification technique |
Apr. 28, 1987 |
| 4506949 |
Diffractive color separation filter |
Mar. 26, 1985 |
| 4484797 |
Diffractive subtractive color filter responsive to angle of incidence of polychromatic illuminating light |
Nov. 27, 1984 |
| 4417784 |
Multiple image encoding using surface relief structures as authenticating device for sheet-material authenticated item |
Nov. 29, 1983 |
| 4353622 |
Recording blank and method for fabricating therefrom diffractive subtractive filter metal embossing master |
Oct. 12, 1982 |
|
|
|
