Current-mode AC-coupled optical driver device
US-12555979-B1 · Feb 17, 2026 · US
Coherence lowering or collapse, e.g. multimode emission by additional input or modulation
Coherence lowering or collapse, e.g. multimode emission by additional input or modulation · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01S5/0652 |
| Official title | {Coherence lowering or collapse, e.g. multimode emission by additional input or modulation} |
| Display label | Coherence lowering or collapse, e.g. multimode emission by additional input or modulation |
| Total patents | 46 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 4 |
| 2017 | 5 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 7 |
| 2021 | 9 |
| 2022 | 2 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Light emitting device, projector, and display
US-12349514-B2 · Jul 1, 2025 · US
Laser having reduced coherence via a phaser shifter
US-12132296-B2 · Oct 29, 2024 · US
Method and system for providing directional light sources with broad spectrum
US-11791606-B1 · Oct 17, 2023 · US
Integrated reduced-coherence-length laser
US-2023327403-A1 · Oct 12, 2023 · US
Broadened spectrum laser diode for display device
US-2023283047-A1 · Sep 7, 2023 · US
Broadened spectrum laser diode for display device
US-11682881-B2 · Jun 20, 2023 · US
Light source device and holographic observation apparatus
US-11640137-B2 · May 2, 2023 · US
Systems and methods for chip-scale lasers with low spatial coherence and directional emission
US-11616341-B2 · Mar 28, 2023 · US
Laser having reduced coherence via phaser shifter
US-2022368105-A1 · Nov 17, 2022 · US
Light Emitting Device, Projector, And Display
US-2022310880-A1 · Sep 29, 2022 · US
INP-based monolithic integrated chaotic semiconductor laser chip capable of feeding back randomly diffused light
US-11152763-B2 · Oct 19, 2021 · US
Fringe mitigation using short pulsed laser diodes
US-11119320-B2 · Sep 14, 2021 · US
Broadened spectrum laser diode for display device
US-2021281043-A1 · Sep 9, 2021 · US
Broadened spectrum laser diode for display device
US-2021281047-A1 · Sep 9, 2021 · US
Semiconductor laser source
US-11038319-B2 · Jun 15, 2021 · US
Edge-emitting laser with high-frequency modulated reflector section
US-10958038-B2 · Mar 23, 2021 · US
Method and system for providing directional light sources with broad spectrum
US-10923878-B1 · Feb 16, 2021 · US
Two-section edge-emitting laser
US-10923884-B2 · Feb 16, 2021 · US
Systems and Methods for Chip-Scale Lasers with Low Spatial Coherence and Directional Emission
US-2021028602-A1 · Jan 28, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01S5/0652?
- CPC H01S5/0652 is the Cooperative Patent Classification code for “Coherence lowering or collapse, e.g. multimode emission by additional input or modulation.”
- How many patents are filed under CPC H01S5/0652 (Coherence lowering or collapse, e.g. multimode emission by additional input or modulation)?
- Our database includes 46 publications tagged with this CPC code.
- Is patent activity under CPC H01S5/0652 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).