F21K 9/60
Optical arrangements integrated in the light source
Official title: Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
F21K9/60 (Optical arrangements integrated in the light source) appears on 4,814 US grants and 5,876 published applications in this corpus.
Search patents in F21K- Granted patents
- 4,814
- Published applications
- 5,876
- Assignees
- 1,341
- Inventors
- 6,896
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 9 | 0 |
| 2002 | 5 | 12 |
| 2003 | 13 | 19 |
| 2004 | 16 | 21 |
| 2005 | 16 | 43 |
| 2006 | 26 | 59 |
| 2007 | 34 | 78 |
| 2008 | 26 | 99 |
| 2009 | 61 | 132 |
| 2010 | 82 | 221 |
| 2011 | 113 | 284 |
| 2012 | 165 | 320 |
| 2013 | 229 | 422 |
| 2014 | 322 | 644 |
| 2015 | 357 | 600 |
| 2016 | 437 | 426 |
| 2017 | 447 | 417 |
| 2018 | 435 | 416 |
| 2019 | 476 | 394 |
| 2020 | 394 | 345 |
| 2021 | 341 | 252 |
| 2022 | 221 | 198 |
| 2023 | 184 | 160 |
| 2024 | 179 | 135 |
| 2025 | 146 | 111 |
| 2026 | 62 | 68 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F21K 9/64Using wavelength conversion means distinct or spaced from the light-generating element1,883
- F21K 9/68Details of reflectors forming part of the light source769
- F21K 9/61Using light guides741
- F21K 9/69Details of refractors forming part of the light source507
- F21K 9/66Details of globes or covers forming part of the light source487
- F21K 9/62Using mixing chambers443
- F21K 9/65Specially adapted for changing the characteristics or the distribution of the light437
Recent patents
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- LED lamp29 Sep 2026US 12,747,856 B2Jiaxing Super Lighting Electric Appliance Co., Ltd
- Lightbars with emission collecting optical modules8 Oct 2026US 2026/0309310 A1Whelen Engineering Company, Inc.
- Solid State Lamp Using Light Emitting Strips1 Oct 2026US 2026/0298419 A1Quarkstar LLC
- Light emitting device10 Sep 2026US 2026/0266433 A1Signify Holding B. V.
- Light emitting device10 Sep 2026US 2026/0266434 A1Signify Holding B. V.
- Led filament arrangement comprising light converting material10 Sep 2026US 2026/0271442 A1Signify Holding B. V.
Most cited
By later US patents
- Lighting device and lighting method856US 7,213,940 B1LED Lighting Fixtures, Inc. · 2007
- Precision illumination methods and systems780US 6,459,919 B1Color Kinetics Incorporated · 2002
- Lighting system590US 6,234,648 B1U. S. Philips Corporation · 2001
- High-density illumination system467US 6,871,982 B2Digital Optics International Corporation · 2005
- Light emitting diode lamp441US 5,575,459 AUniglo Canada Inc. · 1996