G02B 27/4288
Having uniform diffraction efficiency over a large spectral bandwidth
Official title: {having uniform diffraction efficiency over a large spectral bandwidth}
G02B27/4288 (Having uniform diffraction efficiency over a large spectral bandwidth) appears on 51 US grants and 47 published applications in this corpus.
Search patents in G02B- Granted patents
- 51
- Published applications
- 47
- Assignees
- 39
- Inventors
- 94
- Latest grant
- 13 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 8 |
| 2003 | 5 | 4 |
| 2004 | 3 | 2 |
| 2005 | 3 | 2 |
| 2006 | 4 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 4 |
| 2010 | 2 | 4 |
| 2011 | 2 | 2 |
| 2012 | 4 | 2 |
| 2013 | 4 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 3 |
| 2016 | 1 | 1 |
| 2017 | 1 | 4 |
| 2018 | 3 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 2 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Optical material and optical element, diffraction optical element, and stacked type diffraction optical element molded thereof53US 8,120,851 B2Canon Kabushiki Kaisha · 2012
- Broad-spectrum achromatic phase shifters, phase modulators, frequency shifters, and frequency modulators33US 4,786,124 AUniversity of Rochester · 1988
- Achromatic optical system including diffractive optical element29US 5,606,434 AUniversity of North Carolina · 1997
- Diffractive color filter26US 4,255,019 ARCA Corporation · 1981
- Achromatic optical system including diffractive optical element, and method of forming same20US 5,774,239 AUniversity of North Carolina · 1998